_ Git - dnssec-prover/blob - src/validation.rs

   1 //! Utilities to deserialize and validate RFC 9102 proofs
   2
   3 use alloc::borrow::ToOwned;
   4 use alloc::vec::Vec;
   5 use alloc::vec;
   6 use core::cmp::{self, Ordering};
   7
   8 use crate::base32;
   9 use crate::crypto;
  10 use crate::rr::*;
  11 use crate::ser::write_name;
  12
  13 /// Gets the trusted root anchors
  14 ///
  15 /// These are available at <https://data.iana.org/root-anchors/root-anchors.xml>
  16 pub fn root_hints() -> Vec<DS> {
  17         #[allow(unused_mut)]
  18         let mut res = vec![DS {
  19                 name: ".".try_into().unwrap(), key_tag: 19036, alg: 8, digest_type: 2,
  20                 digest: hex_lit::hex!("49AAC11D7B6F6446702E54A1607371607A1A41855200FD2CE1CDDE32F24E8FB5").to_vec(),
  21         }, DS {
  22                 name: ".".try_into().unwrap(), key_tag: 20326, alg: 8, digest_type: 2,
  23                 digest: hex_lit::hex!("E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC683457104237C7F8EC8D").to_vec(),
  24         }];
  25         // In tests, add the trust anchor from RFC 9102
  26         #[cfg(test)]
  27         res.push(DS {
  28                 name: ".".try_into().unwrap(), key_tag: 47005, alg: 13, digest_type: 2,
  29                 digest: hex_lit::hex!("2eb6e9f2480126691594d649a5a613de3052e37861634641bb568746f2ffc4d4").to_vec(),
  30         });
  31         res
  32 }
  33
  34 #[derive(Debug, PartialEq)]
  35 /// An error when validating DNSSEC signatures or other data
  36 pub enum ValidationError {
  37         /// An algorithm used in signing was not supported.
  38         ///
  39         /// In general DNS usage the resulting data should be used anyway, as we were able to verify
  40         /// that a zone wished to use the unsupported algorithm.
  41         ///
  42         /// However, in cases where signing is mandatory, this can be treated as an error.
  43         UnsupportedAlgorithm,
  44         /// The provided data was invalid or signatures did not validate.
  45         Invalid,
  46 }
  47
  48 fn verify_rrsig<'a, RR: Record, Keys>(sig: &RRSig, dnskeys: Keys, mut records: Vec<&RR>)
  49 -> Result<(), ValidationError>
  50 where Keys: IntoIterator<Item = &'a DnsKey> {
  51         for record in records.iter() {
  52                 if sig.ty != record.ty() { return Err(ValidationError::Invalid); }
  53         }
  54         for dnskey in dnskeys.into_iter() {
  55                 if dnskey.key_tag() == sig.key_tag {
  56                         // Protocol must be 3, otherwise its not DNSSEC
  57                         if dnskey.protocol != 3 { continue; }
  58                         // The ZONE flag must be set if we're going to validate RRs with this key.
  59                         if dnskey.flags & 0b1_0000_0000 == 0 { continue; }
  60                         if dnskey.alg != sig.alg { continue; }
  61
  62                         let mut hash_ctx = match sig.alg {
  63                                 8 => crypto::hash::Hasher::sha256(),
  64                                 10 => crypto::hash::Hasher::sha512(),
  65                                 13 => crypto::hash::Hasher::sha256(),
  66                                 14 => crypto::hash::Hasher::sha384(),
  67                                 15 => crypto::hash::Hasher::sha512(),
  68                                 _ => return Err(ValidationError::UnsupportedAlgorithm),
  69                         };
  70
  71                         let mut signed_data = Vec::with_capacity(2048);
  72                         signed_data.extend_from_slice(&sig.ty.to_be_bytes());
  73                         signed_data.extend_from_slice(&sig.alg.to_be_bytes());
  74                         signed_data.extend_from_slice(&sig.labels.to_be_bytes());
  75                         signed_data.extend_from_slice(&sig.orig_ttl.to_be_bytes());
  76                         signed_data.extend_from_slice(&sig.expiration.to_be_bytes());
  77                         signed_data.extend_from_slice(&sig.inception.to_be_bytes());
  78                         signed_data.extend_from_slice(&sig.key_tag.to_be_bytes());
  79                         write_name(&mut signed_data, &sig.key_name);
  80
  81                         records.sort_unstable();
  82
  83                         for record in records.iter() {
  84                                 let record_labels = record.name().labels() as usize;
  85                                 let labels = sig.labels.into();
  86                                 // For NSec types, the name should already match the wildcard, so we don't do any
  87                                 // filtering here. This is relied upon in `verify_rr_stream` to check whether an
  88                                 // NSec record is matching via wildcard (as otherwise we'd allow a resolver to
  89                                 // change the name out from under us and change the wildcard to something else).
  90                                 if record.ty() != NSec::TYPE && record_labels != labels {
  91                                         if record_labels < labels { return Err(ValidationError::Invalid); }
  92                                         let signed_name = record.name().trailing_n_labels(sig.labels);
  93                                         debug_assert!(signed_name.is_some());
  94                                         if let Some(name) = signed_name {
  95                                                 signed_data.extend_from_slice(b"\x01*");
  96                                                 write_name(&mut signed_data, name);
  97                                         } else { return Err(ValidationError::Invalid); }
  98                                 } else {
  99                                         write_name(&mut signed_data, record.name());
 100                                 }
 101                                 signed_data.extend_from_slice(&record.ty().to_be_bytes());
 102                                 signed_data.extend_from_slice(&1u16.to_be_bytes()); // The INternet class
 103                                 signed_data.extend_from_slice(&sig.orig_ttl.to_be_bytes());
 104                                 record.write_u16_len_prefixed_data(&mut signed_data);
 105                         }
 106
 107                         hash_ctx.update(&signed_data);
 108                         let hash = hash_ctx.finish();
 109                         let sig_validation = match sig.alg {
 110                                 8|10 => crypto::rsa::validate_rsa(&dnskey.pubkey, &sig.signature, hash.as_ref())
 111                                         .map_err(|_| ValidationError::Invalid),
 112                                 13 => crypto::secp256r1::validate_ecdsa(&dnskey.pubkey, &sig.signature, hash.as_ref())
 113                                         .map_err(|_| ValidationError::Invalid),
 114                                 14 => crypto::secp384r1::validate_ecdsa(&dnskey.pubkey, &sig.signature, hash.as_ref())
 115                                         .map_err(|_| ValidationError::Invalid),
 116                                 // TODO: 15 => ED25519
 117                                 _ => return Err(ValidationError::UnsupportedAlgorithm),
 118                         };
 119                         #[cfg(fuzzing)] {
 120                                 // When fuzzing, treat any signature starting with a 1 as valid, but only after
 121                                 // parsing and checking signatures to give that code a chance to panic.
 122                                 if sig.signature.get(0) == Some(&1) {
 123                                         return Ok(());
 124                                 }
 125                         }
 126
 127                         // Note that technically there could be a key tag collision here, causing spurious
 128                         // verification failure. In most zones, there's only 2-4 DNSKEY entries, meaning a
 129                         // spurious collision shouldn't be much more often than one every billion zones. Much
 130                         // more likely in such a case, someone is just trying to do a KeyTrap attack, so we
 131                         // simply hard-fail and return an error immediately.
 132                         sig_validation?;
 133
 134                         return Ok(());
 135                 }
 136         }
 137         Err(ValidationError::Invalid)
 138 }
 139
 140 /// Verify [`RRSig`]s over [`DnsKey`], returning a reference to the [`RRSig`] that matched, if any.
 141 fn verify_dnskeys<'r, 'd, RI, R, DI, D>(sigs: RI, dses: DI, records: Vec<&DnsKey>)
 142 -> Result<&'r RRSig, ValidationError>
 143 where RI: IntoIterator<IntoIter = R>, R: Iterator<Item = &'r RRSig>,
 144       DI: IntoIterator<IntoIter = D>, D: Iterator<Item = &'d DS> + Clone {
 145         let mut validated_dnskeys = Vec::with_capacity(records.len());
 146         let dses = dses.into_iter();
 147
 148         let mut had_known_digest_type = false;
 149         let mut had_ds = false;
 150         for ds in dses.clone() {
 151                 had_ds = true;
 152                 if ds.digest_type == 1 || ds.digest_type == 2 || ds.digest_type == 4 {
 153                         had_known_digest_type = true;
 154                         break;
 155                 }
 156         }
 157         if !had_ds { return Err(ValidationError::Invalid); }
 158         if !had_known_digest_type { return Err(ValidationError::UnsupportedAlgorithm); }
 159
 160         for dnskey in records.iter() {
 161                 // Only use SHA1 DS records if we don't have any SHA256/SHA384 DS RRs.
 162                 let trust_sha1 = dses.clone().all(|ds| ds.digest_type != 2 && ds.digest_type != 4);
 163                 for ds in dses.clone() {
 164                         if ds.alg != dnskey.alg { continue; }
 165                         if dnskey.key_tag() == ds.key_tag {
 166                                 let mut ctx = match ds.digest_type {
 167                                         1 if trust_sha1 => crypto::hash::Hasher::sha1(),
 168                                         2 => crypto::hash::Hasher::sha256(),
 169                                         4 => crypto::hash::Hasher::sha384(),
 170                                         _ => continue,
 171                                 };
 172                                 write_name(&mut ctx, &dnskey.name);
 173                                 ctx.update(&dnskey.flags.to_be_bytes());
 174                                 ctx.update(&dnskey.protocol.to_be_bytes());
 175                                 ctx.update(&dnskey.alg.to_be_bytes());
 176                                 ctx.update(&dnskey.pubkey);
 177                                 let hash = ctx.finish();
 178                                 if hash.as_ref() == &ds.digest {
 179                                         validated_dnskeys.push(*dnskey);
 180                                         break;
 181                                 }
 182                         }
 183                 }
 184         }
 185
 186         let mut found_unsupported_alg = false;
 187         for sig in sigs {
 188                 match verify_rrsig(sig, validated_dnskeys.iter().map(|k| *k), records.clone()) {
 189                         Ok(()) => return Ok(sig),
 190                         Err(ValidationError::UnsupportedAlgorithm) => {
 191                                 // There may be redundant signatures by different keys, where one we don't
 192                                 // supprt and another we do. Ignore ones we don't support, but if there are
 193                                 // no more, return UnsupportedAlgorithm
 194                                 found_unsupported_alg = true;
 195                         },
 196                         Err(ValidationError::Invalid) => {
 197                                 // If a signature is invalid, just immediately fail, avoiding KeyTrap issues.
 198                                 return Err(ValidationError::Invalid);
 199                         },
 200                 }
 201         }
 202
 203         if found_unsupported_alg {
 204                 Err(ValidationError::UnsupportedAlgorithm)
 205         } else {
 206                 Err(ValidationError::Invalid)
 207         }
 208 }
 209
 210 /// Given a set of [`RR`]s, [`verify_rr_stream`] checks what it can and returns the set of
 211 /// non-[`RRSig`]/[`DnsKey`]/[`DS`] records which it was able to verify using this struct.
 212 ///
 213 /// It also contains signing and expiry times, which must be validated before considering the
 214 /// contained records verified.
 215 #[derive(Debug, Clone)]
 216 pub struct VerifiedRRStream<'a> {
 217         /// The set of verified [`RR`]s, not including [`DnsKey`], [`RRSig`], [`NSec`], and [`NSec3`]
 218         /// records.
 219         ///
 220         /// These are not valid unless the current UNIX time is between [`Self::valid_from`] and
 221         /// [`Self::expires`].
 222         pub verified_rrs: Vec<&'a RR>,
 223         /// The latest [`RRSig::inception`] of all the [`RRSig`]s validated to verify
 224         /// [`Self::verified_rrs`].
 225         ///
 226         /// Any records in [`Self::verified_rrs`] should not be considered valid unless this is before
 227         /// the current UNIX time.
 228         ///
 229         /// While the field here is a u64, the algorithm used to identify rollovers will fail in 2133.
 230         pub valid_from: u64,
 231         /// The earliest [`RRSig::expiration`] of all the [`RRSig`]s validated to verify
 232         /// [`Self::verified_rrs`].
 233         ///
 234         /// Any records in [`Self::verified_rrs`] should not be considered valid unless this is after
 235         /// the current UNIX time.
 236         ///
 237         /// While the field here is a u64, the algorithm used to identify rollovers will fail in 2133.
 238         pub expires: u64,
 239         /// The minimum [`RRSig::orig_ttl`] of all the [`RRSig`]s validated to verify
 240         /// [`Self::verified_rrs`].
 241         ///
 242         /// Any caching of [`Self::verified_rrs`] must not last longer than this value, in seconds.
 243         pub max_cache_ttl: u32,
 244 }
 245
 246 fn resolve_time(time: u32) -> u64 {
 247         // RFC 2065 was published in January 1997, so we arbitrarily use that as a cutoff and assume
 248         // any timestamps before then are actually past 2106 instead.
 249         // We ignore leap years for simplicity.
 250         if time < 60*60*24*365*27 {
 251                 (time as u64) + (u32::MAX as u64)
 252         } else {
 253                 time.into()
 254         }
 255 }
 256
 257 fn nsec_ord(a: &str, b: &str) -> Ordering {
 258         let mut a_label_iter = a.rsplit(".");
 259         let mut b_label_iter = b.rsplit(".");
 260         loop {
 261                 match (a_label_iter.next(), b_label_iter.next()) {
 262                         (Some(_), None) => return Ordering::Greater,
 263                         (None, Some(_)) => return Ordering::Less,
 264                         (Some(a_label), Some(b_label)) => {
 265                                 let mut a_bytes = a_label.bytes();
 266                                 let mut b_bytes = b_label.bytes();
 267                                 loop {
 268                                         match (a_bytes.next(), b_bytes.next()) {
 269                                                 (Some(_), None) => return Ordering::Greater,
 270                                                 (None, Some(_)) => return Ordering::Less,
 271                                                 (Some(mut a), Some(mut b)) => {
 272                                                         if a >= 'A' as u8 && a <= 'Z' as u8 {
 273                                                                 a += 'a' as u8 - 'A' as u8;
 274                                                         }
 275                                                         if b >= 'A' as u8 && b <= 'Z' as u8 {
 276                                                                 b += 'a' as u8 - 'A' as u8;
 277                                                         }
 278                                                         if a != b { return a.cmp(&b); }
 279                                                 },
 280                                                 (None, None) => break,
 281                                         }
 282                                 }
 283                         },
 284                         (None, None) => return Ordering::Equal,
 285                 }
 286         }
 287 }
 288 fn nsec_ord_extra<T, U>(a: &(&str, T, U), b: &(&str, T, U)) -> Ordering {
 289         nsec_ord(a.0, b.0)
 290 }
 291
 292 #[cfg(test)]
 293 #[test]
 294 fn rfc4034_sort_test() {
 295         // Test nsec_ord based on RFC 4034 section 6.1's example
 296         // Note that we replace the \200 example  with \7f as I have no idea what \200 is
 297         let v = vec!["example.", "a.example.", "yljkjljk.a.example.", "Z.a.example.",
 298                 "zABC.a.EXAMPLE.", "z.example.", "\001.z.example.", "*.z.example.", "\x7f.z.example."];
 299         let mut sorted = v.clone();
 300         sorted.sort_unstable_by(|a, b| nsec_ord(*a, *b));
 301         assert_eq!(sorted, v);
 302 }
 303
 304 /// Verifies the given set of resource records.
 305 ///
 306 /// Given a set of arbitrary records, this attempts to validate DNSSEC data from the [`root_hints`]
 307 /// through to any supported non-DNSSEC record types.
 308 ///
 309 /// All records which could be validated are returned, though if an error is found validating any
 310 /// contained record, only `Err` will be returned.
 311 ///
 312 /// You MUST check that the current UNIX time is between [`VerifiedRRStream::valid_from`] and
 313 /// [`VerifiedRRStream::expires`].
 314 pub fn verify_rr_stream<'a>(inp: &'a [RR]) -> Result<VerifiedRRStream<'a>, ValidationError> {
 315         let mut zone = ".";
 316         let mut res = Vec::new();
 317         let mut rrs_needing_non_existence_proofs = Vec::new();
 318         let mut pending_ds_sets = Vec::with_capacity(1);
 319         let mut latest_inception = 0;
 320         let mut earliest_expiry = u64::MAX;
 321         let mut min_ttl = u32::MAX;
 322         'next_zone: while zone == "." || !pending_ds_sets.is_empty() {
 323                 let next_ds_set;
 324                 if let Some((next_zone, ds_set)) = pending_ds_sets.pop() {
 325                         next_ds_set = Some(ds_set);
 326                         zone = next_zone;
 327                 } else {
 328                         debug_assert_eq!(zone, ".");
 329                         next_ds_set = None;
 330                 }
 331
 332                 let dnskey_rrsigs = inp.iter()
 333                         .filter_map(|rr| if let RR::RRSig(sig) = rr { Some(sig) } else { None })
 334                         .filter(|rrsig| rrsig.name.as_str() == zone && rrsig.ty == DnsKey::TYPE);
 335                 let dnskeys = inp.iter()
 336                         .filter_map(|rr| if let RR::DnsKey(dnskey) = rr { Some(dnskey) } else { None })
 337                         .filter(move |dnskey| dnskey.name.as_str() == zone);
 338                 let root_hints = root_hints();
 339                 let verified_dnskey_rrsig = if zone == "." {
 340                         verify_dnskeys(dnskey_rrsigs, &root_hints, dnskeys.clone().collect())?
 341                 } else {
 342                         debug_assert!(next_ds_set.is_some());
 343                         if next_ds_set.is_none() { break 'next_zone; }
 344                         verify_dnskeys(dnskey_rrsigs, next_ds_set.clone().unwrap(), dnskeys.clone().collect())?
 345                 };
 346                 latest_inception = cmp::max(latest_inception, resolve_time(verified_dnskey_rrsig.inception));
 347                 earliest_expiry = cmp::min(earliest_expiry, resolve_time(verified_dnskey_rrsig.expiration));
 348                 min_ttl = cmp::min(min_ttl, verified_dnskey_rrsig.orig_ttl);
 349                 for rrsig in inp.iter()
 350                         .filter_map(|rr| if let RR::RRSig(sig) = rr { Some(sig) } else { None })
 351                         .filter(move |rrsig| rrsig.key_name.as_str() == zone && rrsig.ty != DnsKey::TYPE)
 352                 {
 353                         if !rrsig.name.ends_with(zone) { return Err(ValidationError::Invalid); }
 354                         let signed_records = inp.iter()
 355                                 .filter(|rr| rr.name() == &rrsig.name && rr.ty() == rrsig.ty);
 356                         match verify_rrsig(rrsig, dnskeys.clone(), signed_records.clone().collect()) {
 357                                 Ok(()) => {},
 358                                 Err(ValidationError::UnsupportedAlgorithm) => continue,
 359                                 Err(ValidationError::Invalid) => {
 360                                         // If a signature is invalid, just immediately fail, avoiding KeyTrap issues.
 361                                         return Err(ValidationError::Invalid);
 362                                 }
 363                         }
 364                         latest_inception = cmp::max(latest_inception, resolve_time(rrsig.inception));
 365                         earliest_expiry = cmp::min(earliest_expiry, resolve_time(rrsig.expiration));
 366                         min_ttl = cmp::min(min_ttl, rrsig.orig_ttl);
 367                         match rrsig.ty {
 368                                 // RRSigs shouldn't cover child `DnsKey`s or other `RRSig`s
 369                                 RRSig::TYPE|DnsKey::TYPE => return Err(ValidationError::Invalid),
 370                                 DS::TYPE => {
 371                                         if !pending_ds_sets.iter().any(|(pending_zone, _)| pending_zone == &rrsig.name.as_str()) {
 372                                                 pending_ds_sets.push((
 373                                                         &rrsig.name,
 374                                                         signed_records.filter_map(|rr|
 375                                                                 if let RR::DS(ds) = rr { Some(ds) }
 376                                                                 else { debug_assert!(false, "We already filtered by type"); None })
 377                                                 ));
 378                                         }
 379                                 },
 380                                 _ => {
 381                                         if rrsig.labels != rrsig.name.labels() && rrsig.ty != NSec::TYPE {
 382                                                 if rrsig.ty == NSec3::TYPE {
 383                                                         // NSEC3 records should never appear on wildcards, so treat the
 384                                                         // whole proof as invalid
 385                                                         return Err(ValidationError::Invalid);
 386                                                 }
 387                                                 // If the RR used a wildcard, we need an NSEC/NSEC3 proof, which we
 388                                                 // check for at the end. Note that the proof should be for the
 389                                                 // "next closest" name, i.e. if the name here is a.b.c and it was
 390                                                 // signed as *.c, we want a proof for nothing being in b.c.
 391                                                 // Alternatively, if it was signed as *.b.c, we'd want a proof for
 392                                                 // a.b.c.
 393                                                 let proof_name = rrsig.name.trailing_n_labels(rrsig.labels + 1)
 394                                                         .ok_or(ValidationError::Invalid)?;
 395                                                 rrs_needing_non_existence_proofs.push((proof_name, &rrsig.key_name, rrsig.ty));
 396                                         }
 397                                         for record in signed_records {
 398                                                 if !res.contains(&record) { res.push(record); }
 399                                         }
 400                                 },
 401                         }
 402                 }
 403                 continue 'next_zone;
 404         }
 405         if res.is_empty() { return Err(ValidationError::Invalid) }
 406         if latest_inception >= earliest_expiry { return Err(ValidationError::Invalid) }
 407
 408         // First sort the proofs we're looking for so that the retains below avoid shifting.
 409         rrs_needing_non_existence_proofs.sort_unstable_by(nsec_ord_extra);
 410         'proof_search_loop: while let Some((name, zone, ty)) = rrs_needing_non_existence_proofs.pop() {
 411                 let nsec_search = res.iter()
 412                         .filter_map(|rr| if let RR::NSec(nsec) = rr { Some(nsec) } else { None })
 413                         .filter(|nsec| nsec.name.ends_with(zone.as_str()));
 414                 for nsec in nsec_search {
 415                         let name_matches = nsec.name.as_str() == name;
 416                         let name_contained = nsec_ord(&nsec.name,  &name) != Ordering::Greater &&
 417                                 nsec_ord(&nsec.next_name, name) == Ordering::Greater;
 418                         if (name_matches && !nsec.types.contains_type(ty)) || name_contained {
 419                                 rrs_needing_non_existence_proofs
 420                                         .retain(|(n, _, t)| *n != name || (name_matches && nsec.types.contains_type(*t)));
 421                                 continue 'proof_search_loop;
 422                         }
 423                 }
 424                 let nsec3_search = res.iter()
 425                         .filter_map(|rr| if let RR::NSec3(nsec3) = rr { Some(nsec3) } else { None })
 426                         .filter(|nsec3| nsec3.name.ends_with(zone.as_str()));
 427
 428                 // Because we will only ever have two entries, a Vec is simpler than a map here.
 429                 let mut nsec3params_to_name_hash = Vec::new();
 430                 for nsec3 in nsec3_search.clone() {
 431                         if nsec3.hash_iterations > 2500 {
 432                                 // RFC 5115 places different limits on the iterations based on the signature key
 433                                 // length, but we just use 2500 for all key types
 434                                 continue;
 435                         }
 436                         if nsec3.hash_algo != 1 { continue; }
 437                         if nsec3params_to_name_hash.iter()
 438                                 .any(|(iterations, salt, _)| *iterations == nsec3.hash_iterations && *salt == &nsec3.salt)
 439                         { continue; }
 440
 441                         let mut hasher = crypto::hash::Hasher::sha1();
 442                         write_name(&mut hasher, &name);
 443                         hasher.update(&nsec3.salt);
 444                         for _ in 0..nsec3.hash_iterations {
 445                                 let res = hasher.finish();
 446                                 hasher = crypto::hash::Hasher::sha1();
 447                                 hasher.update(res.as_ref());
 448                                 hasher.update(&nsec3.salt);
 449                         }
 450                         nsec3params_to_name_hash.push((nsec3.hash_iterations, &nsec3.salt, hasher.finish()));
 451
 452                         if nsec3params_to_name_hash.len() >= 2 {
 453                                 // We only allow for up to two sets of hash_iterations/salt per zone. Beyond that
 454                                 // we assume this is a malicious DoSing proof and give up.
 455                                 break;
 456                         }
 457                 }
 458                 for nsec3 in nsec3_search {
 459                         if nsec3.flags != 0 {
 460                                 // This is an opt-out NSEC3 (or has unknown flags set). Thus, we shouldn't rely on
 461                                 // it as proof that some record doesn't exist.
 462                                 continue;
 463                         }
 464                         if nsec3.hash_algo != 1 { continue; }
 465                         let name_hash = if let Some((_, _, hash)) =
 466                                 nsec3params_to_name_hash.iter()
 467                                 .find(|(iterations, salt, _)| *iterations == nsec3.hash_iterations && *salt == &nsec3.salt)
 468                         {
 469                                 hash
 470                         } else { continue };
 471
 472                         let (start_hash_base32, _) = nsec3.name.split_once(".")
 473                                 .unwrap_or_else(|| { debug_assert!(false); ("", "")});
 474                         let start_hash = if let Ok(start_hash) = base32::decode(start_hash_base32) {
 475                                 start_hash
 476                         } else { continue };
 477                         if start_hash.len() != 20 || nsec3.next_name_hash.len() != 20 { continue; }
 478
 479                         let hash_matches = &start_hash[..] == name_hash.as_ref();
 480                         let hash_contained =
 481                                 &start_hash[..] <= name_hash.as_ref() && &nsec3.next_name_hash[..] > name_hash.as_ref();
 482                         if (hash_matches && !nsec3.types.contains_type(ty)) || hash_contained {
 483                                 rrs_needing_non_existence_proofs
 484                                         .retain(|(n, _, t)| *n != name || (hash_matches && nsec3.types.contains_type(*t)));
 485                                 continue 'proof_search_loop;
 486                         }
 487                 }
 488                 return Err(ValidationError::Invalid);
 489         }
 490
 491         res.retain(|rr| rr.ty() != NSec::TYPE && rr.ty() != NSec3::TYPE);
 492
 493         Ok(VerifiedRRStream {
 494                 verified_rrs: res, valid_from: latest_inception, expires: earliest_expiry,
 495                 max_cache_ttl: min_ttl,
 496         })
 497 }
 498
 499 impl<'a> VerifiedRRStream<'a> {
 500         /// Given a name, resolve any [`CName`] records and return any verified records which were
 501         /// pointed to by the original name.
 502         ///
 503         /// Note that because of [`CName`]s, the [`RR::name`] in the returned records may or may not be
 504         /// equal to `name`.
 505         ///
 506         /// You MUST still check that the current UNIX time is between
 507         /// [`VerifiedRRStream::valid_from`] and [`VerifiedRRStream::expires`] before
 508         /// using any records returned here.
 509         pub fn resolve_name<'b>(&self, name_param: &'b Name) -> Vec<&'a RR> where 'a: 'b {
 510                 let mut dname_name;
 511                 let mut name = name_param;
 512                 loop {
 513                         let mut cname_search = self.verified_rrs.iter()
 514                                 .filter(|rr| rr.name() == name)
 515                                 .filter_map(|rr| if let RR::CName(cn) = rr { Some(cn) } else { None });
 516                         if let Some(cname) = cname_search.next() {
 517                                 name = &cname.canonical_name;
 518                                 continue;
 519                         }
 520
 521                         let mut dname_search = self.verified_rrs.iter()
 522                                 .filter(|rr| name.ends_with(&**rr.name()))
 523                                 .filter_map(|rr| if let RR::DName(dn) = rr { Some(dn) } else { None });
 524                         if let Some(dname) = dname_search.next() {
 525                                 let prefix = name.strip_suffix(&*dname.name).expect("We just filtered for this");
 526                                 let resolved_name = prefix.to_owned() + &dname.delegation_name;
 527                                 dname_name = if let Ok(name) = resolved_name.try_into() {
 528                                         name
 529                                 } else {
 530                                         // This should only happen if the combined name ended up being too long
 531                                         return Vec::new();
 532                                 };
 533                                 name = &dname_name;
 534                                 continue;
 535                         }
 536
 537                         return self.verified_rrs.iter().filter(|rr| rr.name() == name).map(|rr| *rr).collect();
 538                 }
 539         }
 540 }
 541
 542 #[cfg(test)]
 543 mod tests {
 544         #![allow(deprecated)]
 545
 546         use super::*;
 547
 548         use alloc::borrow::ToOwned;
 549
 550         use crate::ser::{parse_rr_stream, write_rr};
 551
 552         use hex_conservative::FromHex;
 553         use rand::seq::SliceRandom;
 554
 555         fn root_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 556                 let dnskeys = vec![DnsKey {
 557                         name: ".".try_into().unwrap(), flags: 256, protocol: 3, alg: 8,
 558                         pubkey: base64::decode("AwEAAentCcIEndLh2QSK+pHFq/PkKCwioxt75d7qNOUuTPMo0Fcte/NbwDPbocvbZ/eNb5RV/xQdapaJASQ/oDLsqzD0H1+JkHNuuKc2JLtpMxg4glSE4CnRXT2CnFTW5IwOREL+zeqZHy68OXy5ngW5KALbevRYRg/q2qFezRtCSQ0knmyPwgFsghVYLKwi116oxwEU5yZ6W7npWMxt5Z+Qs8diPNWrS5aXLgJtrWUGIIuFfuZwXYziGRP/z3o1EfMo9zZU19KLopkoLXX7Ls/diCXdSEdJXTtFA8w0/OKQviuJebfKscoElCTswukVZ1VX5gbaFEo2xWhHJ9Uo63wYaTk=").unwrap(),
 559                 }, DnsKey {
 560                         name: ".".try_into().unwrap(), flags: 257, protocol: 3, alg: 8,
 561                         pubkey: base64::decode("AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlExOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgCmr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnXGXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU=").unwrap(),
 562                 }];
 563                 let dnskey_rrsig = RRSig {
 564                         name: ".".try_into().unwrap(), ty: DnsKey::TYPE, alg: 8, labels: 0, orig_ttl: 172800,
 565                         expiration: 1710201600, inception: 1708387200, key_tag: 20326, key_name: ".".try_into().unwrap(),
 566                         signature: base64::decode("GIgwndRLXgt7GX/JNEqSvpYw5ij6EgeQivdC/hmNNuOd2MCQRSxZx2DdLZUoK0tmn2XmOd0vYP06DgkIMUpIXcBstw/Um55WQhvBkBTPIhuB3UvKYJstmq+8hFHWVJwKHTg9xu38JA43VgCV2AbzurbzNOLSgq+rDPelRXzpLr5aYE3y+EuvL+I5gusm4MMajnp5S+ioWOL+yWOnQE6XKoDmlrfcTrYfRSxRtJewPmGeCbNdwEUBOoLUVdkCjQG4uFykcKL40cY8EOhVmM3kXAyuPuNe2Xz1QrIcVad/U4FDns+hd8+W+sWnr8QAtIUFT5pBjXooGS02m6eMdSeU6g==").unwrap(),
 567                 };
 568                 let root_hints = root_hints();
 569                 verify_dnskeys([&dnskey_rrsig], &root_hints, dnskeys.iter().collect()).unwrap();
 570                 let rrs = vec![dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 571                 (dnskeys, rrs)
 572         }
 573
 574         fn com_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 575                 let root_dnskeys = root_dnskey().0;
 576                 let mut com_ds = vec![DS {
 577                         name: "com.".try_into().unwrap(), key_tag: 19718, alg: 13, digest_type: 2,
 578                         digest: Vec::from_hex("8ACBB0CD28F41250A80A491389424D341522D946B0DA0C0291F2D3D771D7805A").unwrap(),
 579                 }];
 580                 let ds_rrsig = RRSig {
 581                         name: "com.".try_into().unwrap(), ty: DS::TYPE, alg: 8, labels: 1, orig_ttl: 86400,
 582                         expiration: 1710133200, inception: 1709006400, key_tag: 30903, key_name: ".".try_into().unwrap(),
 583                         signature: base64::decode("WEf7UPqoulxab83nVy/518TpZcC3og0paZ7Lag5iOqGdmGvZnB0yQ42s25iqB/mL6ZU+sSUwYoclcW36Tv/yHgS813T2wOgQ4Jh01aCsjkjvpgpbtnDTxg8bL30LV1obhQhOBFu5SqD4FOMeaV9Fqcff7Z72vC1UdVy0us2Kbhti3uQYrKQlGYcDMlgQAyOE0WEaLT74YfKFTpZvIK0UfUfdUAAiM0Z6PUi7BoyToIN+eKKPvny/+4BP9iVvAOmPMgr+kq/qIWOdsvUaq/S+k7VEPTJEi+i2gODgbMC+3EZZpZie9kv1EEAwGwBtGjE7bLlA1QUbuVeTgczIzrYriQ==").unwrap(),
 584                 };
 585                 verify_rrsig(&ds_rrsig, &root_dnskeys, com_ds.iter().collect()).unwrap();
 586                 let dnskeys = vec![DnsKey {
 587                         name: "com.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 588                         pubkey: base64::decode("5i9qjJgyH+9MBz7VO269/srLQB/xRRllyUoVq8oLBZshPe4CGzDSFGnXAM3L/QPzB9ULpJuuy7jcxmBZ5Ebo7A==").unwrap(),
 589                 }, DnsKey {
 590                         name: "com.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 591                         pubkey: base64::decode("tx8EZRAd2+K/DJRV0S+hbBzaRPS/G6JVNBitHzqpsGlz8huE61Ms9ANe6NSDLKJtiTBqfTJWDAywEp1FCsEINQ==").unwrap(),
 592                 }];
 593                 let dnskey_rrsig = RRSig {
 594                         name: "com.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 13, labels: 1, orig_ttl: 86400,
 595                         expiration: 1710342155, inception: 1709045855, key_tag: 19718, key_name: "com.".try_into().unwrap(),
 596                         signature: base64::decode("lF2B9nXZn0CgytrHH6xB0NTva4G/aWvg/ypnSxJ8+ZXlvR0C4974yB+nd2ZWzWMICs/oPYMKoQHqxVjnGyu8nA==").unwrap(),
 597                 };
 598                 verify_dnskeys([&dnskey_rrsig], &com_ds, dnskeys.iter().collect()).unwrap();
 599                 let rrs = vec![com_ds.pop().unwrap().into(), ds_rrsig.into(),
 600                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 601                 (dnskeys, rrs)
 602         }
 603
 604         fn ninja_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 605                 let root_dnskeys = root_dnskey().0;
 606                 let mut ninja_ds = vec![DS {
 607                         name: "ninja.".try_into().unwrap(), key_tag: 46082, alg: 8, digest_type: 2,
 608                         digest: Vec::from_hex("C8F816A7A575BDB2F997F682AAB2653BA2CB5EDDB69B036A30742A33BEFAF141").unwrap(),
 609                 }];
 610                 let ds_rrsig = RRSig {
 611                         name: "ninja.".try_into().unwrap(), ty: DS::TYPE, alg: 8, labels: 1, orig_ttl: 86400,
 612                         expiration: 1710133200, inception: 1709006400, key_tag: 30903, key_name: ".".try_into().unwrap(),
 613                         signature: base64::decode("4fLiekxJy1tHW3sMzmPA/i4Mn6TYoCHDKbcvk3t3N6IXMkACSgU+6P5NxSMxo5Xa7YL5UuE1ICDKxel5o5WzyvjaRQA//hZomjwnCzqyG2XoS6Va8cULSOA5jOU153NSCvos39iHeJnuPINzbMAfsKcg6Ib/IDmNnpouQF53hQzVy+5MGLlGPUZjSO6b4GIslyKpLG0tBLKXM5rZXREPJClEY+LWKOtAS1iARqdsWmSnKxZCpgnEjmkqJBtjCus+s6AtMteBHIFyebwA7oUDNtJ3Im1dO5b6sUoGP8gUgnqdFELSLEeEhKYKpO+jSruI8g/gjNIb5C9vDwAtcSoAew==").unwrap(),
 614                 };
 615                 verify_rrsig(&ds_rrsig, &root_dnskeys, ninja_ds.iter().collect()).unwrap();
 616                 let dnskeys = vec![DnsKey {
 617                         name: "ninja.".try_into().unwrap(), flags: 256, protocol: 3, alg: 8,
 618                         pubkey: base64::decode("AwEAAb6FWe0O0qxUkA+LghF71OPWt0WNqBaCi34HCV6Agjz70RN/j7yGi3xCExM8MkzyrbXd5yYFP4X7TCGEzI5ofLNq7GVIj9laZO0WYS8DNdCMN7qkVVaYeR2UeeGsdvIJqRWzlynABAKnCzX+y5np77FBsle4cAIGxJE/0F5kn61F").unwrap(),
 619                 }, DnsKey {
 620                         name: "ninja.".try_into().unwrap(), flags: 256, protocol: 3, alg: 8,
 621                         pubkey: base64::decode("AwEAAZlkeshgX2Q9i/X4zZMc2ciKO2a3+mOiOCuYHYbwt/43XXdcHdjtOUrWFFJkGBBWsHQZ/Bg0CeUGqvUGywd3ndY5IAX+e7PnuIUlhKDcNmntcQbxhrH+cpmOoB3Xo/96JoVjurPxTuJE23I1oA+0aESc581f4pKEbTp4WI7m5xNn").unwrap(),
 622                 }, DnsKey {
 623                         name: "ninja.".try_into().unwrap(), flags: 257, protocol: 3, alg: 8,
 624                         pubkey: base64::decode("AwEAAcceTJ3Ekkmiez70L8uNVrTDrHZxXHrQHEHQ1DJZDRXDxizuSy0prDXy1yybMqcKAkPL0IruvJ9vHg5j2eHN/hM8RVqCQ1wHgLdQASyUL37VtmLuyNmuiFpYmT+njXVh/tzRHZ4cFxrLAtACWDe6YaPApnVkJ0FEcMnKCQaymBaLX02WQOYuG3XdBr5mQQTtMs/kR/oh83QBcSxyCg3KS7G8IPP6MQPK0za94gsW9zlI5rgN2gpSjbU2qViGjDhw7N3PsC37PLTSLirUmkufeMkP9sfhDjAbP7Nv6FmpTDAIRmBmV0HBT/YNBTUBP89DmEDsrYL8knjkrOaLqV5wgkk=").unwrap(),
 625                 }];
 626                 let dnskey_rrsig = RRSig {
 627                         name: "ninja.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 8, labels: 1, orig_ttl: 3600,
 628                         expiration: 1710689605, inception: 1708871605, key_tag: 46082, key_name: "ninja.".try_into().unwrap(),
 629                         signature: base64::decode("kYxV1z+9Ikxqbr13N+8HFWWnAUcvHkr/dmkdf21mliUhH4cxeYCXC6a95X+YzjYQEQi3fU+S346QBDJkbFYCca5q/TzUdE7ej1B/0uTzhgNrQznm0O6sg6DI3HuqDfZp2oaBQm2C/H4vjkcUW9zxgKP8ON0KKLrZUuYelGazeGSOscjDDlmuNMD7tHhFrmK9BiiX+8sp8Cl+IE5ArP+CPXsII+P+R2QTmTqw5ovJch2FLRMRqCliEzTR/IswBI3FfegZR8h9xJ0gfyD2rDqf6lwJhD1K0aS5wxia+bgzpRIKwiGfP87GDYzkygHr83QbmZS2YG1nxlnQ2rgkqTGgXA==").unwrap(),
 630                 };
 631                 verify_dnskeys([&dnskey_rrsig], &ninja_ds, dnskeys.iter().collect()).unwrap();
 632                 let rrs = vec![ninja_ds.pop().unwrap().into(), ds_rrsig.into(),
 633                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskeys[2].clone().into(),
 634                         dnskey_rrsig.into()];
 635                 (dnskeys, rrs)
 636         }
 637
 638         fn mattcorallo_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 639                 let com_dnskeys = com_dnskey().0;
 640                 let mut mattcorallo_ds = vec![DS {
 641                         name: "mattcorallo.com.".try_into().unwrap(), key_tag: 25630, alg: 13, digest_type: 2,
 642                         digest: Vec::from_hex("DC608CA62BE89B3B9DB1593F9A59930D24FBA79D486E19C88A7792711EC00735").unwrap(),
 643                 }];
 644                 let ds_rrsig = RRSig {
 645                         name: "mattcorallo.com.".try_into().unwrap(), ty: DS::TYPE, alg: 13, labels: 2, orig_ttl: 86400,
 646                         expiration: 1709359258, inception: 1708750258, key_tag: 4534, key_name: "com.".try_into().unwrap(),
 647                         signature: base64::decode("VqYztN78+g170QPeFOqWFkU1ZrKIsndUYj3Y+8x1ZR1v/YGJXLQe5qkcLWjrl/vMyCgknC3Q/dhcS2ag0a7W1w==").unwrap(),
 648                 };
 649                 verify_rrsig(&ds_rrsig, &com_dnskeys, mattcorallo_ds.iter().collect()).unwrap();
 650                 let dnskeys = vec![DnsKey {
 651                         name: "mattcorallo.com.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 652                         pubkey: base64::decode("8BP51Etiu4V6cHvGCYqwNqCip4pvHChjEgkgG4zpdDvO9YRcTGuV/p71hAUut2/qEdxqXfUOT/082BJ/Z089DA==").unwrap(),
 653                 }, DnsKey {
 654                         name: "mattcorallo.com.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 655                         pubkey: base64::decode("AhUlQ8qk7413R0m4zKfTDHb/FQRlKag+ncGXxNxT+qTzSZTb9E5IGjo9VCEp6+IMqqpkd4GrXpN9AzDvlcU9Ig==").unwrap(),
 656                 }, DnsKey {
 657                         name: "mattcorallo.com.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 658                         pubkey: base64::decode("s165ZpubX31FC2CVeIVVvnPpTnJUoOM8CGt3wk4AtxPftYadgI8uFM43F4QaD67v8B8Vshl63frxN50dc44VHQ==").unwrap(),
 659                 }];
 660                 let dnskey_rrsig = RRSig {
 661                         name: "mattcorallo.com.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 13, labels: 2, orig_ttl: 604800,
 662                         expiration:1710262250, inception: 1709047250, key_tag: 25630, key_name: "mattcorallo.com.".try_into().unwrap(),
 663                         signature: base64::decode("dMLDvNU96m+tfgpDIQPxMBJy7T0xyZDj3Wws4b4E6+g3nt5iULdWJ8Eqrj+86KLerOVt7KH4h/YcHP18hHdMGA==").unwrap(),
 664                 };
 665                 verify_dnskeys([&dnskey_rrsig], &mattcorallo_ds, dnskeys.iter().collect()).unwrap();
 666                 let rrs = vec![mattcorallo_ds.pop().unwrap().into(), ds_rrsig.into(),
 667                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskeys[2].clone().into(),
 668                         dnskey_rrsig.into()];
 669                 (dnskeys, rrs)
 670         }
 671
 672         fn mattcorallo_txt_record() -> (Txt, RRSig) {
 673                 let txt_resp = Txt {
 674                         name: "matt.user._bitcoin-payment.mattcorallo.com.".try_into().unwrap(),
 675                         data: "bitcoin:?b12=lno1qsgqmqvgm96frzdg8m0gc6nzeqffvzsqzrxqy32afmr3jn9ggkwg3egfwch2hy0l6jut6vfd8vpsc3h89l6u3dm4q2d6nuamav3w27xvdmv3lpgklhg7l5teypqz9l53hj7zvuaenh34xqsz2sa967yzqkylfu9xtcd5ymcmfp32h083e805y7jfd236w9afhavqqvl8uyma7x77yun4ehe9pnhu2gekjguexmxpqjcr2j822xr7q34p078gzslf9wpwz5y57alxu99s0z2ql0kfqvwhzycqq45ehh58xnfpuek80hw6spvwrvttjrrq9pphh0dpydh06qqspp5uq4gpyt6n9mwexde44qv7lstzzq60nr40ff38u27un6y53aypmx0p4qruk2tf9mjwqlhxak4znvna5y".to_owned().into_bytes(),
 676                 };
 677                 let txt_rrsig = RRSig {
 678                         name: "matt.user._bitcoin-payment.mattcorallo.com.".try_into().unwrap(),
 679                         ty: Txt::TYPE, alg: 13, labels: 5, orig_ttl: 3600, expiration: 1710182540,
 680                         inception: 1708967540, key_tag: 47959, key_name: "mattcorallo.com.".try_into().unwrap(),
 681                         signature: base64::decode("vwI89CkCzWI2Iwgl3UeiSo4GKSaKCh7/E/7nE8Hbb1WQvdpwdKSB6jE4nwM1BN4wdPhi7kxd7hyS/uGiKZjxsg==").unwrap(),
 682                 };
 683                 (txt_resp, txt_rrsig)
 684         }
 685
 686         fn bitcoin_ninja_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 687                 let ninja_dnskeys = ninja_dnskey().0;
 688                 let mut bitcoin_ninja_ds = vec![DS {
 689                         name: "bitcoin.ninja.".try_into().unwrap(), key_tag: 63175, alg: 13, digest_type: 2,
 690                         digest: Vec::from_hex("D554267D7F730B9602BF4436F46BB967EFE3C4202CA7F082F2D5DD24DF4EBDED").unwrap(),
 691                 }];
 692                 let ds_rrsig = RRSig {
 693                         name: "bitcoin.ninja.".try_into().unwrap(), ty: DS::TYPE, alg: 8, labels: 2, orig_ttl: 3600,
 694                         expiration: 1710689605, inception: 1708871605, key_tag: 34164, key_name: "ninja.".try_into().unwrap(),
 695                         signature: base64::decode("g/Xyv6cwrGlpEyhXDV1vdKpoy9ZH7HF6MK/41q0GyCrd9wL8BrzKQgwvLqOBhvfUWACJd66CJpEMZnSwH8ZDEcWYYsd8nY2giGX7In/zGz+PA35HlFqy2BgvQcWCaN5Ht/+BUTgZXHbJBEko1iWLZ1yhciD/wA+XTqS7ScQUu88=").unwrap(),
 696                 };
 697                 verify_rrsig(&ds_rrsig, &ninja_dnskeys, bitcoin_ninja_ds.iter().collect()).unwrap();
 698                 let dnskeys = vec![DnsKey {
 699                         name: "bitcoin.ninja.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 700                         pubkey: base64::decode("0lIZI5BH7kk75R/+1RMReQE0J2iQw0lY2aQ6eCM7F1E9ZMNcIGC1cDl5+FcAU1mP8F3Ws2FjgvCC0S2q8OBF2Q==").unwrap(),
 701                 }, DnsKey {
 702                         name: "bitcoin.ninja.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 703                         pubkey: base64::decode("zbm2rKgzXDtRFV0wFmnlUMdOXWcNKEjGIHsZ7bAnTzbh7TJEzPctSttCaTvdaORxLL4AiOk+VG2iXnL2UuC/xQ==").unwrap(),
 704                 }];
 705                 let dnskey_rrsig = RRSig {
 706                         name: "bitcoin.ninja.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 13, labels: 2, orig_ttl: 604800,
 707                         expiration: 1709947337, inception: 1708732337, key_tag: 63175, key_name: "bitcoin.ninja.".try_into().unwrap(),
 708                         signature: base64::decode("Y3To5FZoZuBDUMtIBZXqzRtufyRqOlDqbHVcoZQitXxerCgNQ1CsVdmoFVMmZqRV5n4itINX2x+9G/31j410og==").unwrap(),
 709                 };
 710                 verify_dnskeys([&dnskey_rrsig], &bitcoin_ninja_ds, dnskeys.iter().collect()).unwrap();
 711                 let rrs = vec![bitcoin_ninja_ds.pop().unwrap().into(), ds_rrsig.into(),
 712                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 713                 (dnskeys, rrs)
 714         }
 715
 716         fn bitcoin_ninja_txt_record() -> (Txt, RRSig) {
 717                 let txt_resp = Txt {
 718                         name: "txt_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 719                         data: "dnssec_prover_test".to_owned().into_bytes(),
 720                 };
 721                 let txt_rrsig = RRSig {
 722                         name: "txt_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 723                         ty: Txt::TYPE, alg: 13, labels: 4, orig_ttl: 30, expiration: 1709950937,
 724                         inception: 1708735937, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 725                         signature: base64::decode("S5swe6BMTqwLBU6FH2D50j5A9i5hzli79Vlf5xB515s6YhmcqodbPZnFlN49RdBE43PKi9MJcXpHTiBxvTYBeQ==").unwrap(),
 726                 };
 727                 (txt_resp, txt_rrsig)
 728         }
 729
 730         fn bitcoin_ninja_cname_record() -> (CName, RRSig) {
 731                 let cname_resp = CName {
 732                         name: "cname_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 733                         canonical_name: "txt_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 734                 };
 735                 let cname_rrsig = RRSig {
 736                         name: "cname_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 737                         ty: CName::TYPE, alg: 13, labels: 4, orig_ttl: 30, expiration: 1709950937,
 738                         inception: 1708735937, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 739                         signature: base64::decode("S8AYftjBADKutt4XKVzqfY7EpvbanpwOGhMDk0lEDFpvNRjl0fZ1k/FEW6AXSUyX2wOaX8hvwXUuZjpr5INuMw==").unwrap(),
 740                 };
 741                 (cname_resp, cname_rrsig)
 742         }
 743
 744         fn bitcoin_ninja_txt_sort_edge_cases_records() -> (Vec<Txt>, RRSig) {
 745                 let txts = vec![Txt {
 746                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 747                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab".to_owned().into_bytes(),
 748                 }, Txt {
 749                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 750                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa".to_owned().into_bytes(),
 751                 }, Txt {
 752                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 753                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabaa".to_owned().into_bytes(),
 754                 }, Txt {
 755                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 756                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaba".to_owned().into_bytes(),
 757                 }, Txt {
 758                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 759                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa".to_owned().into_bytes(),
 760                 }, Txt {
 761                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 762                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab".to_owned().into_bytes(),
 763                 }, Txt {
 764                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 765                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa".to_owned().into_bytes(),
 766                 }, Txt {
 767                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 768                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaba".to_owned().into_bytes(),
 769                 }];
 770                 let rrsig = RRSig {
 771                         name: "txt_sort_order.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 772                         ty: Txt::TYPE, alg: 13, labels: 4, orig_ttl: 30, expiration: 1709950937,
 773                         inception: 1708735937, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 774                         signature: base64::decode("kUKbtoNYM6qnu95QJoyUwtzZoMTcRVfNfIIqSwROLdMYqqq70REjCu99ecjOW/Zm2XRsJ9KgGBB/SuiBdunLew==").unwrap(),
 775                 };
 776                 (txts, rrsig)
 777         }
 778
 779         /// Note that the NSEC3 proofs here are for asdf., any other prefix may fail NSEC checks.
 780         fn bitcoin_ninja_wildcard_record(pfx: &str) -> (Txt, RRSig, NSec3, RRSig) {
 781                 let name: Name = (pfx.to_owned() + ".wildcard_test.dnssec_proof_tests.bitcoin.ninja.").try_into().unwrap();
 782                 let txt_resp = Txt {
 783                         name: name.clone(),
 784                         data: "wildcard_test".to_owned().into_bytes(),
 785                 };
 786                 let txt_rrsig = RRSig {
 787                         name: name.clone(),
 788                         ty: Txt::TYPE, alg: 13, labels: 4, orig_ttl: 30, expiration: 1709950937,
 789                         inception: 1708735937, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 790                         signature: base64::decode("Y+grWXzbZfrcoHRZC9kfRzWp002jZzBDmpSQx6qbUgN0x3aH9kZIOVy0CtQH2vwmLUxoJ+RlezgunNI6LciBzQ==").unwrap(),
 791                 };
 792                 let nsec3 = NSec3 {
 793                         name: "s5sn15c8lcpo7v7f1p0ms6vlbdejt0kd.bitcoin.ninja.".try_into().unwrap(),
 794                         hash_algo: 1, flags: 0, hash_iterations: 0, salt: Vec::from_hex("059855BD1077A2EB").unwrap(),
 795                         next_name_hash: crate::base32::decode("T8QO5GO6M76HBR5Q6T3G6BDR79KBMDSA").unwrap(),
 796                         types: NSecTypeMask::from_types(&[AAAA::TYPE, RRSig::TYPE]),
 797                 };
 798                 let nsec3_rrsig = RRSig {
 799                         name: "s5sn15c8lcpo7v7f1p0ms6vlbdejt0kd.bitcoin.ninja.".try_into().unwrap(),
 800                         ty: NSec3::TYPE, alg: 13, labels: 3, orig_ttl: 60, expiration: 1710267741,
 801                         inception: 1709052741, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 802                         signature: base64::decode("Aiz6My3goWQuIIw/XNUo+kICsp9e4C5XUUs/0Ap+WIEFJsaN/MPGegiR/c5GUGdtHt1GdeP9CU3H1OGkN9MpWQ==").unwrap(),
 803                 };
 804                 (txt_resp, txt_rrsig, nsec3, nsec3_rrsig)
 805         }
 806
 807         fn bitcoin_ninja_cname_wildcard_record() -> (CName, RRSig, Txt, RRSig, [(NSec3, RRSig); 3]) {
 808                 let cname_resp = CName {
 809                         name: "asdf.cname_wildcard_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 810                         canonical_name: "cname.wildcard_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 811                 };
 812                 let cname_rrsig = RRSig {
 813                         name: "asdf.cname_wildcard_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 814                         ty: CName::TYPE, alg: 13, labels: 4, orig_ttl: 30, expiration: 1709950937,
 815                         inception: 1708735937, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 816                         signature: base64::decode("qR/zy8JyihI4qCAMwn7jGU6FARW/Hl8/u+cajef9raKs5aOxnZpCrp19Tot9qPG6px9PzqaghAIP1EmxfgxtRQ==").unwrap(),
 817                 };
 818                 let nsec3_a = NSec3 {
 819                         name: "2tn37cu4ulmlqqke9a3dc9g8bt8b4f6s.bitcoin.ninja.".try_into().unwrap(),
 820                         hash_algo: 1, flags: 0, hash_iterations: 0,
 821                         salt: Vec::from_hex("059855BD1077A2EB").unwrap(),
 822                         next_name_hash: crate::base32::decode("4OKFHSHS41D00EDL0HNPMT7R6IKMJ48H").unwrap(),
 823                         types: NSecTypeMask::from_types(&[DName::TYPE, RRSig::TYPE]),
 824                 };
 825                 let nsec3_a_rrsig = RRSig {
 826                         name: "2tn37cu4ulmlqqke9a3dc9g8bt8b4f6s.bitcoin.ninja.".try_into().unwrap(),
 827                         ty: NSec3::TYPE, alg: 13, labels: 3, orig_ttl: 60, expiration: 1710266541,
 828                         inception: 1709051541, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 829                         signature: base64::decode("tSsPsYIf1o5+piUZX9YwcWKSZgVQOB37TRdb+VL0PmcPaLpzFGJCwU0snn8tMN/BuILG+KZY+UPmAEZZFz4Fvg==").unwrap(),
 830                 };
 831                 let nsec3_b = NSec3 {
 832                         name: "cjqf7lfu6ev77k9m2o6iih56kbfnshin.bitcoin.ninja.".try_into().unwrap(),
 833                         hash_algo: 1, flags: 0, hash_iterations: 0,
 834                         salt: Vec::from_hex("059855BD1077A2EB").unwrap(),
 835                         next_name_hash: crate::base32::decode("DD3MT23L63OIHQPIMA5O2NULSVIGIJ3N").unwrap(),
 836                         types: NSecTypeMask::from_types(&[A::TYPE, AAAA::TYPE, RRSig::TYPE]),
 837                 };
 838                 let nsec3_b_rrsig = RRSig {
 839                         name: "cjqf7lfu6ev77k9m2o6iih56kbfnshin.bitcoin.ninja.".try_into().unwrap(),
 840                         ty: NSec3::TYPE, alg: 13, labels: 3, orig_ttl: 60, expiration: 1710238940,
 841                         inception: 1709023940, key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 842                         signature: base64::decode("CtYriOUI6RzoIG3SigHbBYiTkrEvmSEvP+aOLo1wylqkbBT2iG7pK8VNucKETqMZCROLnmRBw8DHK/8rosKYsA==").unwrap(),
 843                 };
 844                 let (txt_resp, txt_rrsig, nsec3_c, nsec3_c_rrsig) = bitcoin_ninja_wildcard_record("asdf");
 845                 (cname_resp, cname_rrsig, txt_resp, txt_rrsig,
 846                         [(nsec3_a, nsec3_a_rrsig), (nsec3_b, nsec3_b_rrsig), (nsec3_c, nsec3_c_rrsig)])
 847         }
 848
 849         fn bitcoin_ninja_nsec_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 850                 let bitcoin_ninja_dnskeys = bitcoin_ninja_dnskey().0;
 851                 let mut bitcoin_ninja_ds = vec![DS {
 852                         name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 853                         key_tag: 8036, alg: 13, digest_type: 2,
 854                         digest: Vec::from_hex("8EC0DAE4501233979196EBED206212BCCC49E40E086EC2E56558EC1F6FB62715").unwrap(),
 855                 }];
 856                 let ds_rrsig = RRSig {
 857                         name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 858                         ty: DS::TYPE, alg: 13, labels: 4, orig_ttl: 30, expiration: 1710190967, inception: 1708975967,
 859                         key_tag: 37639, key_name: "bitcoin.ninja.".try_into().unwrap(),
 860                         signature: base64::decode("qUexI1yufru0lzkND4uY1r8bsXrXnMVNjPxTLbLauRo/+YW041w9wFu4sl2/cqq3psWvGcBVTltwIdjDJQUcZQ==").unwrap(),
 861                 };
 862                 verify_rrsig(&ds_rrsig, &bitcoin_ninja_dnskeys, bitcoin_ninja_ds.iter().collect()).unwrap();
 863                 let dnskeys = vec![DnsKey {
 864                         name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 865                         pubkey: base64::decode("MUnIhm31ySIr9WXIBVQc38wlSHHvYaKIOFR8WYl4O9MJBlywWeUdx16oGinCe2FjjMkUkKn9kV5zzWhGmrdIbQ==").unwrap(),
 866                 }, DnsKey {
 867                         name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 868                         pubkey: base64::decode("GGZP8k44sro2iTzWKFoHOnbvrAhNiQv+Ng2hr0WNyb24aA5rLYLFac3N7B82xRU2odd60utYJkmU0yA//zyOzw==").unwrap(),
 869                 }];
 870                 let dnskey_rrsig = RRSig {
 871                         name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 872                         ty: DnsKey::TYPE, alg: 13, labels: 4, orig_ttl: 604800, expiration: 1710190613, inception: 1708975613,
 873                         key_tag: 8036, key_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 874                         signature: base64::decode("nX+hkH14Kvjp26Z8x/pjYh5CQW3p9lZQQ+FVJcKHyfjAilEubpw6ihlPpb3Ddh9BbyxhCEFhXDMG2g4od9Y2ow==").unwrap(),
 875                 };
 876                 verify_dnskeys([&dnskey_rrsig], &bitcoin_ninja_ds, dnskeys.iter().collect()).unwrap();
 877                 let rrs = vec![bitcoin_ninja_ds.pop().unwrap().into(), ds_rrsig.into(),
 878                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 879                 (dnskeys, rrs)
 880         }
 881
 882         fn bitcoin_ninja_nsec_record() -> (Txt, RRSig) {
 883                 let txt_resp = Txt {
 884                         name: "a.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 885                         data: "txt_a".to_owned().into_bytes(),
 886                 };
 887                 let txt_rrsig = RRSig {
 888                         name: "a.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 889                         ty: Txt::TYPE, alg: 13, labels: 5, orig_ttl: 30, expiration: 1710201091, inception: 1708986091,
 890                         key_tag: 42215, key_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 891                         signature: base64::decode("rhDcZvSk4ngyDmMif3oBmoDMO1YoimRrvOp/ErlSaujN+OCMKocgWkssedQCx7hyLxwsFLvaaiNXCr/7ZaSe4Q==").unwrap(),
 892                 };
 893                 (txt_resp, txt_rrsig)
 894         }
 895
 896         fn bitcoin_ninja_nsec_wildcard_record(pfx: &str) -> (Txt, RRSig, NSec, RRSig) {
 897                 let name: Name = (pfx.to_owned() + ".wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.").try_into().unwrap();
 898                 let txt_resp = Txt {
 899                         name: name.clone(),
 900                         data: "wildcard_test".to_owned().into_bytes(),
 901                 };
 902                 let txt_rrsig = RRSig {
 903                         name: name.clone(),
 904                         ty: Txt::TYPE, alg: 13, labels: 5, orig_ttl: 30, expiration: 1710190613, inception: 1708975613,
 905                         key_tag: 42215, key_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 906                         signature: base64::decode("E3+tEe5TxI8OSNP+LVHsOagjQ/9heD6a4ICYBgS8mkfRuqgFeXhz22n4f2LzssdXe1xzwayt7nROdHdqdfHDYg==").unwrap(),
 907                 };
 908                 let nsec = NSec {
 909                         name: "*.wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 910                         next_name: "override.wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 911                         types: NSecTypeMask::from_types(&[Txt::TYPE, RRSig::TYPE, NSec::TYPE]),
 912                 };
 913                 let nsec_rrsig = RRSig {
 914                         name: "*.wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 915                         ty: NSec::TYPE, alg: 13, labels: 5, orig_ttl: 60, expiration: 1710191561, inception: 1708976561,
 916                         key_tag: 42215, key_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 917                         signature: base64::decode("ZjQMw1dt1a61d4ls3pMkCnBiWRaMyAwn6UapRaYNtdA8cTbbqbhzJZCvc6ZBhZ90CzxCYR0h/eavowlF1j53Gg==").unwrap(),
 918                 };
 919                 (txt_resp, txt_rrsig, nsec, nsec_rrsig)
 920         }
 921
 922         fn bitcoin_ninja_nsec_post_override_wildcard_record(pfx: &str) -> (Txt, RRSig, NSec, RRSig) {
 923                 let name: Name = (pfx.to_owned() + ".wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.").try_into().unwrap();
 924                 let txt_resp = Txt {
 925                         name: name.clone(),
 926                         data: "wildcard_test".to_owned().into_bytes(),
 927                 };
 928                 let txt_rrsig = RRSig {
 929                         name: name.clone(),
 930                         ty: Txt::TYPE, alg: 13, labels: 5, orig_ttl: 30, expiration: 1710190613, inception: 1708975613,
 931                         key_tag: 42215, key_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 932                         signature: base64::decode("E3+tEe5TxI8OSNP+LVHsOagjQ/9heD6a4ICYBgS8mkfRuqgFeXhz22n4f2LzssdXe1xzwayt7nROdHdqdfHDYg==").unwrap(),
 933                 };
 934                 let nsec = NSec {
 935                         name: "override.wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 936                         next_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 937                         types: NSecTypeMask::from_types(&[Txt::TYPE, RRSig::TYPE, NSec::TYPE]),
 938                 };
 939                 let nsec_rrsig = RRSig {
 940                         name: "override.wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 941                         ty: NSec::TYPE, alg: 13, labels: 6, orig_ttl: 60, expiration: 1710201063, inception: 1708986063,
 942                         key_tag: 42215, key_name: "nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap(),
 943                         signature: base64::decode("pBNXnNPR0fiGEtkm/0PlnDW830JWv8KgnyhnOit6wLHtiWoLhMiS48utji3FbTfelCnePjbLh/t7SF941O2QTA==").unwrap(),
 944                 };
 945                 (txt_resp, txt_rrsig, nsec, nsec_rrsig)
 946         }
 947
 948         #[test]
 949         fn check_txt_record_a() {
 950                 let dnskeys = mattcorallo_dnskey().0;
 951                 let (txt, txt_rrsig) = mattcorallo_txt_record();
 952                 let txt_resp = [txt];
 953                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
 954         }
 955
 956         #[test]
 957         fn check_single_txt_proof() {
 958                 let mut rr_stream = Vec::new();
 959                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 960                 for rr in com_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 961                 for rr in mattcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 962                 let (txt, txt_rrsig) = mattcorallo_txt_record();
 963                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 964
 965                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
 966                 rrs.shuffle(&mut rand::rngs::OsRng);
 967                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
 968                 assert_eq!(verified_rrs.verified_rrs.len(), 1);
 969                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[0] {
 970                         assert_eq!(txt.name.as_str(), "matt.user._bitcoin-payment.mattcorallo.com.");
 971                         assert_eq!(txt.data, b"bitcoin:?b12=lno1qsgqmqvgm96frzdg8m0gc6nzeqffvzsqzrxqy32afmr3jn9ggkwg3egfwch2hy0l6jut6vfd8vpsc3h89l6u3dm4q2d6nuamav3w27xvdmv3lpgklhg7l5teypqz9l53hj7zvuaenh34xqsz2sa967yzqkylfu9xtcd5ymcmfp32h083e805y7jfd236w9afhavqqvl8uyma7x77yun4ehe9pnhu2gekjguexmxpqjcr2j822xr7q34p078gzslf9wpwz5y57alxu99s0z2ql0kfqvwhzycqq45ehh58xnfpuek80hw6spvwrvttjrrq9pphh0dpydh06qqspp5uq4gpyt6n9mwexde44qv7lstzzq60nr40ff38u27un6y53aypmx0p4qruk2tf9mjwqlhxak4znvna5y");
 972                 } else { panic!(); }
 973                 assert_eq!(verified_rrs.valid_from, 1709047250); // The mattcorallo.com. DNSKEY RRSig was created last
 974                 assert_eq!(verified_rrs.expires, 1709359258); // The mattcorallo.com. DS RRSig expires first
 975                 assert_eq!(verified_rrs.max_cache_ttl, 3600); // The TXT record had the shortest TTL
 976         }
 977
 978         #[test]
 979         fn check_txt_record_b() {
 980                 let dnskeys = bitcoin_ninja_dnskey().0;
 981                 let (txt, txt_rrsig) = bitcoin_ninja_txt_record();
 982                 let txt_resp = [txt];
 983                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
 984         }
 985
 986         #[test]
 987         fn check_cname_record() {
 988                 let dnskeys = bitcoin_ninja_dnskey().0;
 989                 let (cname, cname_rrsig) = bitcoin_ninja_cname_record();
 990                 let cname_resp = [cname];
 991                 verify_rrsig(&cname_rrsig, &dnskeys, cname_resp.iter().collect()).unwrap();
 992         }
 993
 994         #[test]
 995         fn check_multi_zone_proof() {
 996                 let mut rr_stream = Vec::new();
 997                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 998                 for rr in com_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 999                 for rr in ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1000                 for rr in mattcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1001                 let (txt, txt_rrsig) = mattcorallo_txt_record();
1002                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1003                 for rr in bitcoin_ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1004                 let (txt, txt_rrsig) = bitcoin_ninja_txt_record();
1005                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1006                 let (cname, cname_rrsig) = bitcoin_ninja_cname_record();
1007                 for rr in [RR::CName(cname), RR::RRSig(cname_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1008
1009                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
1010                 rrs.shuffle(&mut rand::rngs::OsRng);
1011                 let mut verified_rrs = verify_rr_stream(&rrs).unwrap();
1012                 verified_rrs.verified_rrs.sort();
1013                 assert_eq!(verified_rrs.verified_rrs.len(), 3);
1014                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[0] {
1015                         assert_eq!(txt.name.as_str(), "matt.user._bitcoin-payment.mattcorallo.com.");
1016                         assert_eq!(txt.data, b"bitcoin:?b12=lno1qsgqmqvgm96frzdg8m0gc6nzeqffvzsqzrxqy32afmr3jn9ggkwg3egfwch2hy0l6jut6vfd8vpsc3h89l6u3dm4q2d6nuamav3w27xvdmv3lpgklhg7l5teypqz9l53hj7zvuaenh34xqsz2sa967yzqkylfu9xtcd5ymcmfp32h083e805y7jfd236w9afhavqqvl8uyma7x77yun4ehe9pnhu2gekjguexmxpqjcr2j822xr7q34p078gzslf9wpwz5y57alxu99s0z2ql0kfqvwhzycqq45ehh58xnfpuek80hw6spvwrvttjrrq9pphh0dpydh06qqspp5uq4gpyt6n9mwexde44qv7lstzzq60nr40ff38u27un6y53aypmx0p4qruk2tf9mjwqlhxak4znvna5y");
1017                 } else { panic!(); }
1018                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[1] {
1019                         assert_eq!(txt.name.as_str(), "txt_test.dnssec_proof_tests.bitcoin.ninja.");
1020                         assert_eq!(txt.data, b"dnssec_prover_test");
1021                 } else { panic!(); }
1022                 if let RR::CName(cname) = &verified_rrs.verified_rrs[2] {
1023                         assert_eq!(cname.name.as_str(), "cname_test.dnssec_proof_tests.bitcoin.ninja.");
1024                         assert_eq!(cname.canonical_name.as_str(), "txt_test.dnssec_proof_tests.bitcoin.ninja.");
1025                 } else { panic!(); }
1026
1027                 let filtered_rrs =
1028                         verified_rrs.resolve_name(&"cname_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap());
1029                 assert_eq!(filtered_rrs.len(), 1);
1030                 if let RR::Txt(txt) = &filtered_rrs[0] {
1031                         assert_eq!(txt.name.as_str(), "txt_test.dnssec_proof_tests.bitcoin.ninja.");
1032                         assert_eq!(txt.data, b"dnssec_prover_test");
1033                 } else { panic!(); }
1034         }
1035
1036         #[test]
1037         fn check_wildcard_record() {
1038                 // Wildcard proof works for any name, even multiple names
1039                 let dnskeys = bitcoin_ninja_dnskey().0;
1040                 let (txt, txt_rrsig, _, _) = bitcoin_ninja_wildcard_record("name");
1041                 let txt_resp = [txt];
1042                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
1043
1044                 let (txt, txt_rrsig, _, _) = bitcoin_ninja_wildcard_record("anoter_name");
1045                 let txt_resp = [txt];
1046                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
1047
1048                 let (txt, txt_rrsig, _, _) = bitcoin_ninja_wildcard_record("multiple.names");
1049                 let txt_resp = [txt];
1050                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
1051         }
1052
1053         #[test]
1054         fn check_wildcard_proof() {
1055                 let mut rr_stream = Vec::new();
1056                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1057                 for rr in ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1058                 for rr in bitcoin_ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1059                 let (cname, cname_rrsig, txt, txt_rrsig, nsec3s) = bitcoin_ninja_cname_wildcard_record();
1060                 for rr in [RR::CName(cname), RR::RRSig(cname_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1061                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1062                 for (rra, rrb) in nsec3s { write_rr(&rra, 1, &mut rr_stream); write_rr(&rrb, 1, &mut rr_stream); }
1063
1064                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
1065                 rrs.shuffle(&mut rand::rngs::OsRng);
1066                 let mut verified_rrs = verify_rr_stream(&rrs).unwrap();
1067                 verified_rrs.verified_rrs.sort();
1068                 assert_eq!(verified_rrs.verified_rrs.len(), 2);
1069                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[0] {
1070                         assert_eq!(txt.name.as_str(), "asdf.wildcard_test.dnssec_proof_tests.bitcoin.ninja.");
1071                         assert_eq!(txt.data, b"wildcard_test");
1072                 } else { panic!(); }
1073                 if let RR::CName(cname) = &verified_rrs.verified_rrs[1] {
1074                         assert_eq!(cname.name.as_str(), "asdf.cname_wildcard_test.dnssec_proof_tests.bitcoin.ninja.");
1075                         assert_eq!(cname.canonical_name.as_str(), "cname.wildcard_test.dnssec_proof_tests.bitcoin.ninja.");
1076                 } else { panic!(); }
1077
1078                 let filtered_rrs =
1079                         verified_rrs.resolve_name(&"asdf.wildcard_test.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap());
1080                 assert_eq!(filtered_rrs.len(), 1);
1081                 if let RR::Txt(txt) = &filtered_rrs[0] {
1082                         assert_eq!(txt.name.as_str(), "asdf.wildcard_test.dnssec_proof_tests.bitcoin.ninja.");
1083                         assert_eq!(txt.data, b"wildcard_test");
1084                 } else { panic!(); }
1085         }
1086
1087         #[test]
1088         fn check_simple_nsec_zone_proof() {
1089                 let mut rr_stream = Vec::new();
1090                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1091                 for rr in ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1092                 for rr in bitcoin_ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1093                 for rr in bitcoin_ninja_nsec_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1094                 let (txt, txt_rrsig) = bitcoin_ninja_nsec_record();
1095                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1096
1097                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
1098                 rrs.shuffle(&mut rand::rngs::OsRng);
1099                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
1100                 let filtered_rrs =
1101                         verified_rrs.resolve_name(&"a.nsec_tests.dnssec_proof_tests.bitcoin.ninja.".try_into().unwrap());
1102                 assert_eq!(filtered_rrs.len(), 1);
1103                 if let RR::Txt(txt) = &filtered_rrs[0] {
1104                         assert_eq!(txt.name.as_str(), "a.nsec_tests.dnssec_proof_tests.bitcoin.ninja.");
1105                         assert_eq!(txt.data, b"txt_a");
1106                 } else { panic!(); }
1107         }
1108
1109         #[test]
1110         fn check_nsec_wildcard_proof() {
1111                 let check_proof = |pfx: &str, post_override: bool| -> Result<(), ()> {
1112                         let mut rr_stream = Vec::new();
1113                         for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1114                         for rr in ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1115                         for rr in bitcoin_ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1116                         for rr in bitcoin_ninja_nsec_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1117                         let (txt, txt_rrsig, nsec, nsec_rrsig) = if post_override {
1118                                 bitcoin_ninja_nsec_post_override_wildcard_record(pfx)
1119                         } else {
1120                                 bitcoin_ninja_nsec_wildcard_record(pfx)
1121                         };
1122                         for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1123                         for rr in [RR::NSec(nsec), RR::RRSig(nsec_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
1124
1125                         let mut rrs = parse_rr_stream(&rr_stream).unwrap();
1126                         rrs.shuffle(&mut rand::rngs::OsRng);
1127                         // If the post_override flag is wrong (or the pfx is override), this will fail. No
1128                         // other calls in this lambda should fail.
1129                         let verified_rrs = verify_rr_stream(&rrs).map_err(|_| ())?;
1130                         let name: Name =
1131                                 (pfx.to_owned() + ".wildcard_test.nsec_tests.dnssec_proof_tests.bitcoin.ninja.").try_into().unwrap();
1132                         let filtered_rrs = verified_rrs.resolve_name(&name);
1133                         assert_eq!(filtered_rrs.len(), 1);
1134                         if let RR::Txt(txt) = &filtered_rrs[0] {
1135                                 assert_eq!(txt.name, name);
1136                                 assert_eq!(txt.data, b"wildcard_test");
1137                         } else { panic!(); }
1138                         Ok(())
1139                 };
1140                 // Records up to override will only work with the pre-override NSEC, and afterwards with
1141                 // the post-override NSEC. The literal override will always fail.
1142                 check_proof("a", false).unwrap();
1143                 check_proof("a", true).unwrap_err();
1144                 check_proof("a.b", false).unwrap();
1145                 check_proof("a.b", true).unwrap_err();
1146                 check_proof("o", false).unwrap();
1147                 check_proof("o", true).unwrap_err();
1148                 check_proof("a.o", false).unwrap();
1149                 check_proof("a.o", true).unwrap_err();
1150                 check_proof("override", false).unwrap_err();
1151                 check_proof("override", true).unwrap_err();
1152                 // Subdomains of override are also overridden by the override TXT entry and cannot use the
1153                 // wildcard record.
1154                 check_proof("b.override", false).unwrap_err();
1155                 check_proof("b.override", true).unwrap_err();
1156                 check_proof("z", false).unwrap_err();
1157                 check_proof("z", true).unwrap_err();
1158                 check_proof("a.z", false).unwrap_err();
1159                 check_proof("a.z", true).unwrap_err();
1160         }
1161
1162         #[test]
1163         fn check_txt_sort_order() {
1164                 let mut rr_stream = Vec::new();
1165                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1166                 for rr in ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1167                 for rr in bitcoin_ninja_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
1168                 let (mut txts, rrsig) = bitcoin_ninja_txt_sort_edge_cases_records();
1169                 write_rr(&rrsig, 1, &mut rr_stream);
1170                 for txt in txts.iter() { write_rr(txt, 1, &mut rr_stream); }
1171
1172                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
1173                 rrs.shuffle(&mut rand::rngs::OsRng);
1174                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
1175                 let mut verified_txts = verified_rrs.verified_rrs
1176                         .iter().map(|rr| if let RR::Txt(txt) = rr { txt.clone() } else { panic!(); })
1177                         .collect::<Vec<_>>();
1178                 verified_txts.sort();
1179                 txts.sort();
1180                 assert_eq!(verified_txts, txts);
1181         }
1182
1183         #[test]
1184         fn rfc9102_parse_test() {
1185                 // Note that this is the `AuthenticationChain` field only, and ignores the
1186                 // `ExtSupportLifetime` field (stripping the top two 0 bytes from the front).
1187 let rfc9102_test_vector = Vec::from_hex("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").unwrap();
1188
1189                 let mut rrs = parse_rr_stream(&rfc9102_test_vector).unwrap();
1190                 rrs.shuffle(&mut rand::rngs::OsRng);
1191                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
1192                 assert_eq!(verified_rrs.verified_rrs.len(), 1);
1193                 if let RR::TLSA(tlsa) = &verified_rrs.verified_rrs[0] {
1194                         assert_eq!(tlsa.cert_usage, 3);
1195                         assert_eq!(tlsa.selector, 1);
1196                         assert_eq!(tlsa.data_ty, 1);
1197                         assert_eq!(tlsa.data, Vec::from_hex("8bd1da95272f7fa4ffb24137fc0ed03aae67e5c4d8b3c50734e1050a7920b922").unwrap());
1198                 } else { panic!(); }
1199         }
1200 }