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

   1 //! Utilities to deserialize and validate RFC 9102 proofs
   2
   3 use alloc::vec::Vec;
   4 use alloc::vec;
   5 use core::cmp;
   6
   7 use ring::signature;
   8
   9 use crate::rr::*;
  10 use crate::ser::write_name;
  11
  12 /// Gets the trusted root anchors
  13 ///
  14 /// These are available at <https://data.iana.org/root-anchors/root-anchors.xml>
  15 pub fn root_hints() -> Vec<DS> {
  16         #[allow(unused_mut)]
  17         let mut res = vec![DS {
  18                 name: ".".try_into().unwrap(), key_tag: 19036, alg: 8, digest_type: 2,
  19                 digest: hex_lit::hex!("49AAC11D7B6F6446702E54A1607371607A1A41855200FD2CE1CDDE32F24E8FB5").to_vec(),
  20         }, DS {
  21                 name: ".".try_into().unwrap(), key_tag: 20326, alg: 8, digest_type: 2,
  22                 digest: hex_lit::hex!("E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC683457104237C7F8EC8D").to_vec(),
  23         }];
  24         // In tests, add the trust anchor from RFC 9102
  25         #[cfg(test)]
  26         res.push(DS {
  27                 name: ".".try_into().unwrap(), key_tag: 47005, alg: 13, digest_type: 2,
  28                 digest: hex_lit::hex!("2eb6e9f2480126691594d649a5a613de3052e37861634641bb568746f2ffc4d4").to_vec(),
  29         });
  30         res
  31 }
  32
  33 #[derive(Debug, PartialEq)]
  34 /// An error when validating DNSSEC signatures or other data
  35 pub enum ValidationError {
  36         /// An algorithm used in signing was not supported.
  37         ///
  38         /// In general DNS usage the resulting data should be used anyway, as we were able to verify
  39         /// that a zone wished to use the unsupported algorithm.
  40         ///
  41         /// However, in cases where signing is mandatory, this can be treated as an error.
  42         UnsupportedAlgorithm,
  43         /// The provided data was invalid or signatures did not validate.
  44         Invalid,
  45 }
  46
  47 pub(crate) fn bytes_to_rsa_pk<'a>(pubkey: &'a [u8])
  48 -> Result<signature::RsaPublicKeyComponents<&'a [u8]>, ()> {
  49         if pubkey.len() <= 3 { return Err(()); }
  50
  51         let mut pos = 0;
  52         let exponent_length;
  53         if pubkey[0] == 0 {
  54                 exponent_length = ((pubkey[1] as usize) << 8) | (pubkey[2] as usize);
  55                 pos += 3;
  56         } else {
  57                 exponent_length = pubkey[0] as usize;
  58                 pos += 1;
  59         }
  60
  61         if pubkey.len() <= pos + exponent_length { return Err(()); }
  62         Ok(signature::RsaPublicKeyComponents {
  63                 n: &pubkey[pos + exponent_length..],
  64                 e: &pubkey[pos..pos + exponent_length]
  65         })
  66 }
  67
  68 fn verify_rrsig<'a, RR: Record, Keys>(sig: &RRSig, dnskeys: Keys, mut records: Vec<&RR>)
  69 -> Result<(), ValidationError>
  70 where Keys: IntoIterator<Item = &'a DnsKey> {
  71         for record in records.iter() {
  72                 if sig.ty != record.ty() { return Err(ValidationError::Invalid); }
  73         }
  74         for dnskey in dnskeys.into_iter() {
  75                 if dnskey.key_tag() == sig.key_tag {
  76                         // Protocol must be 3, otherwise its not DNSSEC
  77                         if dnskey.protocol != 3 { continue; }
  78                         // The ZONE flag must be set if we're going to validate RRs with this key.
  79                         if dnskey.flags & 0b1_0000_0000 == 0 { continue; }
  80                         if dnskey.alg != sig.alg { continue; }
  81
  82                         let mut signed_data = Vec::with_capacity(2048);
  83                         signed_data.extend_from_slice(&sig.ty.to_be_bytes());
  84                         signed_data.extend_from_slice(&sig.alg.to_be_bytes());
  85                         signed_data.extend_from_slice(&sig.labels.to_be_bytes());
  86                         signed_data.extend_from_slice(&sig.orig_ttl.to_be_bytes());
  87                         signed_data.extend_from_slice(&sig.expiration.to_be_bytes());
  88                         signed_data.extend_from_slice(&sig.inception.to_be_bytes());
  89                         signed_data.extend_from_slice(&sig.key_tag.to_be_bytes());
  90                         write_name(&mut signed_data, &sig.key_name);
  91
  92                         records.sort_unstable();
  93
  94                         for record in records.iter() {
  95                                 let periods = record.name().as_str().chars().filter(|c| *c == '.').count();
  96                                 let labels = sig.labels.into();
  97                                 if periods != 1 && periods != labels {
  98                                         if periods < labels { return Err(ValidationError::Invalid); }
  99                                         let signed_name = record.name().as_str().splitn(periods - labels + 1, ".").last();
 100                                         debug_assert!(signed_name.is_some());
 101                                         if let Some(name) = signed_name {
 102                                                 signed_data.extend_from_slice(b"\x01*");
 103                                                 write_name(&mut signed_data, name);
 104                                         } else { return Err(ValidationError::Invalid); }
 105                                 } else {
 106                                         write_name(&mut signed_data, record.name());
 107                                 }
 108                                 signed_data.extend_from_slice(&record.ty().to_be_bytes());
 109                                 signed_data.extend_from_slice(&1u16.to_be_bytes()); // The INternet class
 110                                 signed_data.extend_from_slice(&sig.orig_ttl.to_be_bytes());
 111                                 record.write_u16_len_prefixed_data(&mut signed_data);
 112                         }
 113
 114                         let sig_validation = match sig.alg {
 115                                 8|10 => {
 116                                         let alg = if sig.alg == 8 {
 117                                                 &signature::RSA_PKCS1_1024_8192_SHA256_FOR_LEGACY_USE_ONLY
 118                                         } else {
 119                                                 &signature::RSA_PKCS1_1024_8192_SHA512_FOR_LEGACY_USE_ONLY
 120                                         };
 121                                         bytes_to_rsa_pk(&dnskey.pubkey).map_err(|_| ValidationError::Invalid)?
 122                                                 .verify(alg, &signed_data, &sig.signature)
 123                                                 .map_err(|_| ValidationError::Invalid)
 124                                 },
 125                                 13|14 => {
 126                                         let alg = if sig.alg == 13 {
 127                                                 &signature::ECDSA_P256_SHA256_FIXED
 128                                         } else {
 129                                                 &signature::ECDSA_P384_SHA384_FIXED
 130                                         };
 131
 132                                         // Add 0x4 identifier to the ECDSA pubkey as expected by ring.
 133                                         let mut key = Vec::with_capacity(dnskey.pubkey.len() + 1);
 134                                         key.push(0x4);
 135                                         key.extend_from_slice(&dnskey.pubkey);
 136
 137                                         signature::UnparsedPublicKey::new(alg, &key)
 138                                                 .verify(&signed_data, &sig.signature)
 139                                                 .map_err(|_| ValidationError::Invalid)
 140                                 },
 141                                 15 => {
 142                                         signature::UnparsedPublicKey::new(&signature::ED25519, &dnskey.pubkey)
 143                                                 .verify(&signed_data, &sig.signature)
 144                                                 .map_err(|_| ValidationError::Invalid)
 145                                 },
 146                                 _ => return Err(ValidationError::UnsupportedAlgorithm),
 147                         };
 148                         #[cfg(fuzzing)] {
 149                                 // When fuzzing, treat any signature starting with a 1 as valid, but only after
 150                                 // parsing and checking signatures to give that code a chance to panic.
 151                                 if sig.signature.get(0) == Some(&1) {
 152                                         return Ok(());
 153                                 }
 154                         }
 155                         sig_validation?;
 156
 157                         return Ok(());
 158                 }
 159         }
 160         Err(ValidationError::Invalid)
 161 }
 162
 163 fn verify_dnskey_rrsig<'a, T, I>(sig: &RRSig, dses: T, records: Vec<&DnsKey>)
 164 -> Result<(), ValidationError>
 165 where T: IntoIterator<IntoIter = I>, I: Iterator<Item = &'a DS> + Clone {
 166         let mut validated_dnskeys = Vec::with_capacity(records.len());
 167         let dses = dses.into_iter();
 168
 169         let mut had_known_digest_type = false;
 170         let mut had_ds = false;
 171         for ds in dses.clone() {
 172                 had_ds = true;
 173                 if ds.digest_type == 1 || ds.digest_type == 2 || ds.digest_type == 4 {
 174                         had_known_digest_type = true;
 175                         break;
 176                 }
 177         }
 178         if !had_ds { return Err(ValidationError::Invalid); }
 179         if !had_known_digest_type { return Err(ValidationError::UnsupportedAlgorithm); }
 180
 181         for dnskey in records.iter() {
 182                 // Only use SHA1 DS records if we don't have any SHA256/SHA384 DS RRs.
 183                 let trust_sha1 = dses.clone().all(|ds| ds.digest_type != 2 && ds.digest_type != 4);
 184                 for ds in dses.clone() {
 185                         if ds.alg != dnskey.alg { continue; }
 186                         if dnskey.key_tag() == ds.key_tag {
 187                                 let alg = match ds.digest_type {
 188                                         1 if trust_sha1 => &ring::digest::SHA1_FOR_LEGACY_USE_ONLY,
 189                                         2 => &ring::digest::SHA256,
 190                                         4 => &ring::digest::SHA384,
 191                                         _ => continue,
 192                                 };
 193                                 let mut ctx = ring::digest::Context::new(alg);
 194                                 write_name(&mut ctx, &dnskey.name);
 195                                 ctx.update(&dnskey.flags.to_be_bytes());
 196                                 ctx.update(&dnskey.protocol.to_be_bytes());
 197                                 ctx.update(&dnskey.alg.to_be_bytes());
 198                                 ctx.update(&dnskey.pubkey);
 199                                 let hash = ctx.finish();
 200                                 if hash.as_ref() == &ds.digest {
 201                                         validated_dnskeys.push(*dnskey);
 202                                         break;
 203                                 }
 204                         }
 205                 }
 206         }
 207         verify_rrsig(sig, validated_dnskeys.iter().map(|k| *k), records)
 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.
 218         ///
 219         /// These are not valid unless the current UNIX time is between [`Self::valid_from`] and
 220         /// [`Self::expires`].
 221         pub verified_rrs: Vec<&'a RR>,
 222         /// The latest [`RRSig::inception`] of all the [`RRSig`]s validated to verify
 223         /// [`Self::verified_rrs`].
 224         ///
 225         /// Any records in [`Self::verified_rrs`] should not be considered valid unless this is before
 226         /// the current UNIX time.
 227         ///
 228         /// While the field here is a u64, the algorithm used to identify rollovers will fail in 2133.
 229         pub valid_from: u64,
 230         /// The earliest [`RRSig::expiration`] of all the [`RRSig`]s validated to verify
 231         /// [`Self::verified_rrs`].
 232         ///
 233         /// Any records in [`Self::verified_rrs`] should not be considered valid unless this is after
 234         /// the current UNIX time.
 235         ///
 236         /// While the field here is a u64, the algorithm used to identify rollovers will fail in 2133.
 237         pub expires: u64,
 238         /// The minimum [`RRSig::orig_ttl`] of all the [`RRSig`]s validated to verify
 239         /// [`Self::verified_rrs`].
 240         ///
 241         /// Any caching of [`Self::verified_rrs`] must not last longer than this value, in seconds.
 242         pub max_cache_ttl: u32,
 243 }
 244
 245 fn resolve_time(time: u32) -> u64 {
 246         // RFC 2065 was published in January 1997, so we arbitrarily use that as a cutoff and assume
 247         // any timestamps before then are actually past 2106 instead.
 248         // We ignore leap years for simplicity.
 249         if time < 60*60*24*365*27 {
 250                 (time as u64) + (u32::MAX as u64)
 251         } else {
 252                 time.into()
 253         }
 254 }
 255
 256 /// Verifies the given set of resource records.
 257 ///
 258 /// Given a set of arbitrary records, this attempts to validate DNSSEC data from the [`root_hints`]
 259 /// through to any supported non-DNSSEC record types.
 260 ///
 261 /// All records which could be validated are returned, though if an error is found validating any
 262 /// contained record, only `Err` will be returned.
 263 ///
 264 /// You MUST check that the current UNIX time is between [`VerifiedRRStream::valid_from`] and
 265 /// [`VerifiedRRStream::expires`].
 266 pub fn verify_rr_stream<'a>(inp: &'a [RR]) -> Result<VerifiedRRStream<'a>, ValidationError> {
 267         let mut zone = ".";
 268         let mut res = Vec::new();
 269         let mut pending_ds_sets = Vec::with_capacity(1);
 270         let mut latest_inception = 0;
 271         let mut earliest_expiry = u64::MAX;
 272         let mut min_ttl = u32::MAX;
 273         'next_zone: while zone == "." || !pending_ds_sets.is_empty() {
 274                 let mut found_unsupported_alg = false;
 275                 let next_ds_set;
 276                 if let Some((next_zone, ds_set)) = pending_ds_sets.pop() {
 277                         next_ds_set = Some(ds_set);
 278                         zone = next_zone;
 279                 } else {
 280                         debug_assert_eq!(zone, ".");
 281                         next_ds_set = None;
 282                 }
 283
 284                 for rrsig in inp.iter()
 285                         .filter_map(|rr| if let RR::RRSig(sig) = rr { Some(sig) } else { None })
 286                         .filter(|rrsig| rrsig.name.as_str() == zone && rrsig.ty == DnsKey::TYPE)
 287                 {
 288                         let dnskeys = inp.iter()
 289                                 .filter_map(|rr| if let RR::DnsKey(dnskey) = rr { Some(dnskey) } else { None })
 290                                 .filter(move |dnskey| dnskey.name.as_str() == zone);
 291                         let dnskeys_verified = if zone == "." {
 292                                 verify_dnskey_rrsig(rrsig, &root_hints(), dnskeys.clone().collect())
 293                         } else {
 294                                 debug_assert!(next_ds_set.is_some());
 295                                 if next_ds_set.is_none() { break 'next_zone; }
 296                                 verify_dnskey_rrsig(rrsig, next_ds_set.clone().unwrap(), dnskeys.clone().collect())
 297                         };
 298                         if dnskeys_verified.is_ok() {
 299                                 latest_inception = cmp::max(latest_inception, resolve_time(rrsig.inception));
 300                                 earliest_expiry = cmp::min(earliest_expiry, resolve_time(rrsig.expiration));
 301                                 min_ttl = cmp::min(min_ttl, rrsig.orig_ttl);
 302                                 for rrsig in inp.iter()
 303                                         .filter_map(|rr| if let RR::RRSig(sig) = rr { Some(sig) } else { None })
 304                                         .filter(move |rrsig| rrsig.key_name.as_str() == zone && rrsig.ty != DnsKey::TYPE)
 305                                 {
 306                                         if !rrsig.name.ends_with(zone) { return Err(ValidationError::Invalid); }
 307                                         let signed_records = inp.iter()
 308                                                 .filter(|rr| rr.name() == &rrsig.name && rr.ty() == rrsig.ty);
 309                                         verify_rrsig(rrsig, dnskeys.clone(), signed_records.clone().collect())?;
 310                                         latest_inception = cmp::max(latest_inception, resolve_time(rrsig.inception));
 311                                         earliest_expiry = cmp::min(earliest_expiry, resolve_time(rrsig.expiration));
 312                                         min_ttl = cmp::min(min_ttl, rrsig.orig_ttl);
 313                                         match rrsig.ty {
 314                                                 // RRSigs shouldn't cover child `DnsKey`s or other `RRSig`s
 315                                                 RRSig::TYPE|DnsKey::TYPE => return Err(ValidationError::Invalid),
 316                                                 DS::TYPE => {
 317                                                         if !pending_ds_sets.iter().any(|(pending_zone, _)| pending_zone == &rrsig.name.as_str()) {
 318                                                                 pending_ds_sets.push((
 319                                                                         &rrsig.name,
 320                                                                         signed_records.filter_map(|rr|
 321                                                                                 if let RR::DS(ds) = rr { Some(ds) }
 322                                                                                 else { debug_assert!(false, "We already filtered by type"); None })
 323                                                                 ));
 324                                                         }
 325                                                 },
 326                                                 _ => {
 327                                                         for record in signed_records {
 328                                                                 if !res.contains(&record) { res.push(record); }
 329                                                         }
 330                                                 },
 331                                         }
 332                                 }
 333                                 continue 'next_zone;
 334                         } else if dnskeys_verified == Err(ValidationError::UnsupportedAlgorithm) {
 335                                 // There may be redundant signatures by different keys, where one we don't supprt
 336                                 // and another we do. Ignore ones we don't support, but if there are no more,
 337                                 // return UnsupportedAlgorithm
 338                                 found_unsupported_alg = true;
 339                         } else {
 340                                 // We don't explicitly handle invalid signatures here, instead we move on to the
 341                                 // next RRSig (if there is one) and return `Invalid` if no `RRSig`s match.
 342                         }
 343                 }
 344                 // No RRSigs were able to verify our DnsKey set
 345                 if found_unsupported_alg {
 346                         return Err(ValidationError::UnsupportedAlgorithm);
 347                 } else {
 348                         return Err(ValidationError::Invalid);
 349                 }
 350         }
 351         if res.is_empty() { Err(ValidationError::Invalid) }
 352         else if latest_inception >= earliest_expiry { Err(ValidationError::Invalid) }
 353         else {
 354                 Ok(VerifiedRRStream {
 355                         verified_rrs: res, valid_from: latest_inception, expires: earliest_expiry,
 356                         max_cache_ttl: min_ttl,
 357                 })
 358         }
 359 }
 360
 361 impl<'a> VerifiedRRStream<'a> {
 362         /// Given a name, resolve any [`CName`] records and return any verified records which were
 363         /// pointed to by the original name.
 364         ///
 365         /// Note that because of [`CName`]s, the [`RR::name`] in the returned records may or may not be
 366         /// equal to `name`.
 367         ///
 368         /// You MUST still check that the current UNIX time is between
 369         /// [`VerifiedRRStream::valid_from`] and [`VerifiedRRStream::expires`] before
 370         /// using any records returned here.
 371         pub fn resolve_name<'b>(&self, mut name: &'b Name) -> Vec<&'a RR> where 'a: 'b {
 372                 loop {
 373                         let mut cname_search = self.verified_rrs.iter()
 374                                 .filter(|rr| rr.name() == name)
 375                                 .filter_map(|rr| if let RR::CName(cn) = rr { Some(cn) } else { None });
 376                         if let Some(cname) = cname_search.next() {
 377                                 name = &cname.canonical_name;
 378                         }
 379                         return self.verified_rrs.iter().filter(|rr| rr.name() == name).map(|rr| *rr).collect();
 380                 }
 381         }
 382 }
 383
 384 #[cfg(test)]
 385 mod tests {
 386         #![allow(deprecated)]
 387
 388         use super::*;
 389
 390         use alloc::borrow::ToOwned;
 391
 392         use crate::ser::{parse_rr_stream, write_rr};
 393
 394         use hex_conservative::FromHex;
 395         use rand::seq::SliceRandom;
 396
 397         fn root_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 398                 let dnskeys = vec![DnsKey {
 399                         name: ".".try_into().unwrap(), flags: 256, protocol: 3, alg: 8,
 400                         pubkey: base64::decode("AwEAAentCcIEndLh2QSK+pHFq/PkKCwioxt75d7qNOUuTPMo0Fcte/NbwDPbocvbZ/eNb5RV/xQdapaJASQ/oDLsqzD0H1+JkHNuuKc2JLtpMxg4glSE4CnRXT2CnFTW5IwOREL+zeqZHy68OXy5ngW5KALbevRYRg/q2qFezRtCSQ0knmyPwgFsghVYLKwi116oxwEU5yZ6W7npWMxt5Z+Qs8diPNWrS5aXLgJtrWUGIIuFfuZwXYziGRP/z3o1EfMo9zZU19KLopkoLXX7Ls/diCXdSEdJXTtFA8w0/OKQviuJebfKscoElCTswukVZ1VX5gbaFEo2xWhHJ9Uo63wYaTk=").unwrap(),
 401                 }, DnsKey {
 402                         name: ".".try_into().unwrap(), flags: 257, protocol: 3, alg: 8,
 403                         pubkey: base64::decode("AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlExOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgCmr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnXGXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU=").unwrap(),
 404                 }];
 405                 let dnskey_rrsig = RRSig {
 406                         name: ".".try_into().unwrap(), ty: DnsKey::TYPE, alg: 8, labels: 0, orig_ttl: 172800,
 407                         expiration: 1708473600, inception: 1706659200, key_tag: 20326, key_name: ".".try_into().unwrap(),
 408                         signature: base64::decode("ZO8LbjtwAiVkkBzOnGbiI/3ilGUPmmJpagsLSBVbIZRG6o/8a+hUZpIPTvk5ERZ1rAW4x0YxKAU8qtaHQpKIp3qYA6u97DYytVD7RdtXKHmGYAvR6QbD5eVTkCw1Sz705rJxbwt6+YM5OBweSUAy5Glo6JSQPDQwRDwj/bV2fLRhJbvfsBgxqaXJA0SaE/ceyvK8gB2NIaguTJNrztr2TENrHxi86OKOuHYDHthOW0TFoPfr19qj/P2eEC6dYniTVovUwHT7e+Hqrb05dJF4mI4ZjaIb5mFf8i5RehT1aRlnb3CLiwJ01bEjrRBo3xUn5I3PkCnglHhx3EvkO73OzA==").unwrap(),
 409                 };
 410                 let root_hints = root_hints();
 411                 verify_dnskey_rrsig(&dnskey_rrsig, &root_hints, dnskeys.iter().collect()).unwrap();
 412                 let rrs = vec![dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 413                 (dnskeys, rrs)
 414         }
 415
 416         fn com_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 417                 let root_dnskeys = root_dnskey().0;
 418                 let mut com_ds = vec![DS {
 419                         name: "com.".try_into().unwrap(), key_tag: 19718, alg: 13, digest_type: 2,
 420                         digest: Vec::from_hex("8ACBB0CD28F41250A80A491389424D341522D946B0DA0C0291F2D3D771D7805A").unwrap(),
 421                 }];
 422                 let ds_rrsig = RRSig {
 423                         name: "com.".try_into().unwrap(), ty: DS::TYPE, alg: 8, labels: 1, orig_ttl: 86400,
 424                         expiration: 1708189200, inception: 1707062400, key_tag: 30903, key_name: ".".try_into().unwrap(),
 425                         signature: base64::decode("vwMOBBwqRBdlmGZB+0FKfyMSignEtpYW9sD4TzPW2E+wdbF7O7epR5cmKmvcv0RUJdM0dGC/QmhCfgf/yqw1Xp7TpmPaYzaruW70hjGXZJO2nY3G6stUVe4S7lM2CzHL7nbbpaB5B+iSu6Ua9dZ+nyKrxfB7855HBLCLrHrkMGxWQiEPTallXXS8tEM1Y2XrsuzAQu2vZ2D2ClhFspFbPwwOdw+G6+NsZ8PnIfTkCj6DuKcgbdxjmGaYmw/6hVt9OU3kGCOBaJaEy4LrD8Kwzfu4S7axMwTKP4y4c5Y/E4k/mVAW0cuUtv549HaDfD2V0CvW1bDl6PqRkOiVsqM/lA==").unwrap(),
 426                 };
 427                 verify_rrsig(&ds_rrsig, &root_dnskeys, com_ds.iter().collect()).unwrap();
 428                 let dnskeys = vec![DnsKey {
 429                         name: "com.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 430                         pubkey: base64::decode("5i9qjJgyH+9MBz7VO269/srLQB/xRRllyUoVq8oLBZshPe4CGzDSFGnXAM3L/QPzB9ULpJuuy7jcxmBZ5Ebo7A==").unwrap(),
 431                 }, DnsKey {
 432                         name: "com.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 433                         pubkey: base64::decode("tx8EZRAd2+K/DJRV0S+hbBzaRPS/G6JVNBitHzqpsGlz8huE61Ms9ANe6NSDLKJtiTBqfTJWDAywEp1FCsEINQ==").unwrap(),
 434                 }];
 435                 let dnskey_rrsig = RRSig {
 436                         name: "com.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 13, labels: 1, orig_ttl: 86400,
 437                         expiration: 1707750155, inception: 1706453855, key_tag: 19718, key_name: "com.".try_into().unwrap(),
 438                         signature: base64::decode("ZFGChM7QfJt0QSqVWerWnG5pMjpL1pXyJAmuHe8dHI/olmaNCxm+mqNHv9i3AploFY6JoNtiHmeBiC6zuFj/ZQ==").unwrap(),
 439                 };
 440                 verify_dnskey_rrsig(&dnskey_rrsig, &com_ds, dnskeys.iter().collect()).unwrap();
 441                 let rrs = vec![com_ds.pop().unwrap().into(), ds_rrsig.into(),
 442                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 443                 (dnskeys, rrs)
 444         }
 445
 446         fn mattcorallo_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 447                 let com_dnskeys = com_dnskey().0;
 448                 let mut mattcorallo_ds = vec![DS {
 449                         name: "mattcorallo.com.".try_into().unwrap(), key_tag: 25630, alg: 13, digest_type: 2,
 450                         digest: Vec::from_hex("DC608CA62BE89B3B9DB1593F9A59930D24FBA79D486E19C88A7792711EC00735").unwrap(),
 451                 }];
 452                 let ds_rrsig = RRSig {
 453                         name: "mattcorallo.com.".try_into().unwrap(), ty: DS::TYPE, alg: 13, labels: 2, orig_ttl: 86400,
 454                         expiration: 1707631252, inception: 1707022252, key_tag: 4534, key_name: "com.".try_into().unwrap(),
 455                         signature: base64::decode("M7Fk+CjfLz6hRsY5iSuw5bwc2OqlS3XtKH8FDs7lcbhEiR63n+DzOF0I8L+3k06SXFnE89uuofQECzWmAyef6Q==").unwrap(),
 456                 };
 457                 verify_rrsig(&ds_rrsig, &com_dnskeys, mattcorallo_ds.iter().collect()).unwrap();
 458                 let dnskeys = vec![DnsKey {
 459                         name: "mattcorallo.com.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 460                         pubkey: base64::decode("8BP51Etiu4V6cHvGCYqwNqCip4pvHChjEgkgG4zpdDvO9YRcTGuV/p71hAUut2/qEdxqXfUOT/082BJ/Z089DA==").unwrap(),
 461                 }, DnsKey {
 462                         name: "mattcorallo.com.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 463                         pubkey: base64::decode("AhUlQ8qk7413R0m4zKfTDHb/FQRlKag+ncGXxNxT+qTzSZTb9E5IGjo9VCEp6+IMqqpkd4GrXpN9AzDvlcU9Ig==").unwrap(),
 464                 }];
 465                 let dnskey_rrsig = RRSig {
 466                         name: "mattcorallo.com.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 13, labels: 2, orig_ttl: 604800,
 467                         expiration: 1708278650, inception: 1707063650, key_tag: 25630, key_name: "mattcorallo.com.".try_into().unwrap(),
 468                         signature: base64::decode("nyVDwG+la8d5dyWgB7m+H3BQwCvTWLQ/kAqNruMzdLmn9B3VC9u/rvM/ortEu0WPbA1FZWJbRKpF1Ohkj3ltNw==").unwrap(),
 469                 };
 470                 verify_dnskey_rrsig(&dnskey_rrsig, &mattcorallo_ds, dnskeys.iter().collect()).unwrap();
 471                 let rrs = vec![mattcorallo_ds.pop().unwrap().into(), ds_rrsig.into(),
 472                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 473                 (dnskeys, rrs)
 474         }
 475
 476         fn mattcorallo_txt_record() -> (Txt, RRSig) {
 477                 let txt_resp = Txt {
 478                         name: "matt.user._bitcoin-payment.mattcorallo.com.".try_into().unwrap(),
 479                         data: "bitcoin:?b12=lno1qsgqmqvgm96frzdg8m0gc6nzeqffvzsqzrxqy32afmr3jn9ggkwg3egfwch2hy0l6jut6vfd8vpsc3h89l6u3dm4q2d6nuamav3w27xvdmv3lpgklhg7l5teypqz9l53hj7zvuaenh34xqsz2sa967yzqkylfu9xtcd5ymcmfp32h083e805y7jfd236w9afhavqqvl8uyma7x77yun4ehe9pnhu2gekjguexmxpqjcr2j822xr7q34p078gzslf9wpwz5y57alxu99s0z2ql0kfqvwhzycqq45ehh58xnfpuek80hw6spvwrvttjrrq9pphh0dpydh06qqspp5uq4gpyt6n9mwexde44qv7lstzzq60nr40ff38u27un6y53aypmx0p4qruk2tf9mjwqlhxak4znvna5y".to_owned().into_bytes(),
 480                 };
 481                 let txt_rrsig = RRSig {
 482                         name: "matt.user._bitcoin-payment.mattcorallo.com.".try_into().unwrap(),
 483                         ty: Txt::TYPE, alg: 13, labels: 5, orig_ttl: 3600, expiration: 1708123318,
 484                         inception: 1706908318, key_tag: 47959, key_name: "mattcorallo.com.".try_into().unwrap(),
 485                         signature: base64::decode("mgU6iwyMWO0w9nj2Gmt1+RmaIJIU3KO7DWVZiCD1bmU9e9zNefXCtnWOC2HtwjUsn/QYkWluvuSfYpBrt1IjpQ==").unwrap(),
 486                 };
 487                 (txt_resp, txt_rrsig)
 488         }
 489
 490         fn matcorallo_dnskey() -> (Vec<DnsKey>, Vec<RR>) {
 491                 let com_dnskeys = com_dnskey().0;
 492                 let mut matcorallo_ds = vec![DS {
 493                         name: "matcorallo.com.".try_into().unwrap(), key_tag: 24930, alg: 13, digest_type: 2,
 494                         digest: Vec::from_hex("693E990CBB1CE1095E387092D3C04BCE907C008891F32A88D41D3ECB129E5E23").unwrap(),
 495                 }];
 496                 let ds_rrsig = RRSig {
 497                         name: "matcorallo.com.".try_into().unwrap(), ty: DS::TYPE, alg: 13, labels: 2, orig_ttl: 86400,
 498                         expiration: 1707628636, inception: 1707019636, key_tag: 4534, key_name: "com.".try_into().unwrap(),
 499                         signature: base64::decode("l9b+DhtnJSIzR6y4Bwx+0L9kep77UNCBoTg74RTSL6oMrQd8w4OobHxzwDyXqnLfyxVP18V+AnQp4DdJ2nUW1g==").unwrap(),
 500                 };
 501                 verify_rrsig(&ds_rrsig, &com_dnskeys, matcorallo_ds.iter().collect()).unwrap();
 502                 let dnskeys = vec![DnsKey {
 503                         name: "matcorallo.com.".try_into().unwrap(), flags: 257, protocol: 3, alg: 13,
 504                         pubkey: base64::decode("pfO3ow3SrKhLS7AMEi3b5W9P28nCOB9vryxfSXhqMcXFP1x9V4xAt0/JLr0zNodsqRD/8d9Yhu4Wf3hnSlaavw==").unwrap(),
 505                 }, DnsKey {
 506                         name: "matcorallo.com.".try_into().unwrap(), flags: 256, protocol: 3, alg: 13,
 507                         pubkey: base64::decode("OO6LQTV1mnRsFgn6YQoyeo/SDqS3eajfVv8WGQVnuSYO/bTS9St1tJiox2fgU6wRWDU3chhjz1Pj0unKUAQKig==").unwrap(),
 508                 }];
 509                 let dnskey_rrsig = RRSig {
 510                         name: "matcorallo.com.".try_into().unwrap(), ty: DnsKey::TYPE, alg: 13, labels: 2, orig_ttl: 604800,
 511                         expiration: 1708309135, inception: 1707094135, key_tag: 24930, key_name: "matcorallo.com.".try_into().unwrap(),
 512                         signature: base64::decode("2MKg3bTn9zf4ThwCoKRFadqD6l1D6SuLksRieKxFC0QQnzUOCRgZSK2/IlT0DMEoM0+mGrJZo7UG79UILMGUyg==").unwrap(),
 513                 };
 514                 verify_dnskey_rrsig(&dnskey_rrsig, &matcorallo_ds, dnskeys.iter().collect()).unwrap();
 515                 let rrs = vec![matcorallo_ds.pop().unwrap().into(), ds_rrsig.into(),
 516                         dnskeys[0].clone().into(), dnskeys[1].clone().into(), dnskey_rrsig.into()];
 517                 (dnskeys, rrs)
 518         }
 519
 520         fn matcorallo_txt_record() -> (Txt, RRSig) {
 521                 let txt_resp = Txt {
 522                         name: "txt_test.matcorallo.com.".try_into().unwrap(),
 523                         data: "dnssec_prover_test".to_owned().into_bytes(),
 524                 };
 525                 let txt_rrsig = RRSig {
 526                         name: "txt_test.matcorallo.com.".try_into().unwrap(),
 527                         ty: Txt::TYPE, alg: 13, labels: 3, orig_ttl: 30, expiration: 1708319203,
 528                         inception: 1707104203, key_tag: 34530, key_name: "matcorallo.com.".try_into().unwrap(),
 529                         signature: base64::decode("4vaE5Jex2VvIT39JpuMNT7Ds7O0OfzTik5f8WcRRxO0IJnGAO16syAsNUkNkNqsMYknnjHDF0lI4agszgzdpsw==").unwrap(),
 530                 };
 531                 (txt_resp, txt_rrsig)
 532         }
 533
 534         fn matcorallo_cname_record() -> (CName, RRSig) {
 535                 let cname_resp = CName {
 536                         name: "cname_test.matcorallo.com.".try_into().unwrap(),
 537                         canonical_name: "txt_test.matcorallo.com.".try_into().unwrap(),
 538                 };
 539                 let cname_rrsig = RRSig {
 540                         name: "cname_test.matcorallo.com.".try_into().unwrap(),
 541                         ty: CName::TYPE, alg: 13, labels: 3, orig_ttl: 30, expiration: 1708319203,
 542                         inception: 1707104203, key_tag: 34530, key_name: "matcorallo.com.".try_into().unwrap(),
 543                         signature: base64::decode("5HIrmEotbVb95umE6SX3NrPboKsthdcY8b7DdaYQZzm0Nj5m2VgcfOmEPJYS8o1xE4GvGGF4sdfSy3Uw7TibBg==").unwrap(),
 544                 };
 545                 (cname_resp, cname_rrsig)
 546         }
 547
 548         fn matcorallo_wildcard_record() -> (Txt, RRSig) {
 549                 let txt_resp = Txt {
 550                         name: "test.wildcard_test.matcorallo.com.".try_into().unwrap(),
 551                         data: "wildcard_test".to_owned().into_bytes(),
 552                 };
 553                 let txt_rrsig = RRSig {
 554                         name: "test.wildcard_test.matcorallo.com.".try_into().unwrap(),
 555                         ty: Txt::TYPE, alg: 13, labels: 3, orig_ttl: 30, expiration: 1708321778,
 556                         inception: 1707106778, key_tag: 34530, key_name: "matcorallo.com.".try_into().unwrap(),
 557                         signature: base64::decode("vdnXunPY4CnbW/BL8VOOR9o33+dqyKA/4h+u5VM7NjB30Shp8L8gL5UwE0k7TKRNgHC8j3TqEPEmNMIHz87Z4Q==").unwrap(),
 558                 };
 559                 (txt_resp, txt_rrsig)
 560         }
 561
 562         fn matcorallo_cname_wildcard_record() -> (CName, RRSig, Txt, RRSig) {
 563                 let cname_resp = CName {
 564                         name: "test.cname_wildcard_test.matcorallo.com.".try_into().unwrap(),
 565                         canonical_name: "cname.wildcard_test.matcorallo.com.".try_into().unwrap(),
 566                 };
 567                 let txt_resp = Txt {
 568                         name: "cname.wildcard_test.matcorallo.com.".try_into().unwrap(),
 569                         data: "wildcard_test".to_owned().into_bytes(),
 570                 };
 571                 let cname_rrsig = RRSig {
 572                         name: "test.cname_wildcard_test.matcorallo.com.".try_into().unwrap(),
 573                         ty: CName::TYPE, alg: 13, labels: 3, orig_ttl: 30, expiration: 1708322050,
 574                         inception: 1707107050, key_tag: 34530, key_name: "matcorallo.com.".try_into().unwrap(),
 575                         signature: base64::decode("JfJuSemF5dtQYxEw6eKL4IRP8BaDt6FtbtdpZ6HjODTDflhKQRhBEbwT7kwceKPAq18q5sWHFV1bMTqE/F3WLw==").unwrap(),
 576                 };
 577                 let txt_rrsig = RRSig {
 578                         name: "cname.wildcard_test.matcorallo.com.".try_into().unwrap(),
 579                         ty: Txt::TYPE, alg: 13, labels: 3, orig_ttl: 30, expiration: 1708321778,
 580                         inception: 1707106778, key_tag: 34530, key_name: "matcorallo.com.".try_into().unwrap(),
 581                         signature: base64::decode("vdnXunPY4CnbW/BL8VOOR9o33+dqyKA/4h+u5VM7NjB30Shp8L8gL5UwE0k7TKRNgHC8j3TqEPEmNMIHz87Z4Q==").unwrap(),
 582                 };
 583                 (cname_resp, cname_rrsig, txt_resp, txt_rrsig)
 584         }
 585
 586         fn matcorallo_txt_sort_edge_cases_records() -> (Vec<Txt>, RRSig) {
 587                 let txts = vec![Txt {
 588                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 589                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab".to_owned().into_bytes(),
 590                 }, Txt {
 591                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 592                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa".to_owned().into_bytes(),
 593                 }, Txt {
 594                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 595                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabaa".to_owned().into_bytes(),
 596                 }, Txt {
 597                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 598                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaba".to_owned().into_bytes(),
 599                 }, Txt {
 600                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 601                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa".to_owned().into_bytes(),
 602                 }, Txt {
 603                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 604                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab".to_owned().into_bytes(),
 605                 }, Txt {
 606                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 607                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa".to_owned().into_bytes(),
 608                 }, Txt {
 609                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 610                         data: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaba".to_owned().into_bytes(),
 611                 }];
 612                 let rrsig = RRSig {
 613                         name: "txt_sort_order.matcorallo.com.".try_into().unwrap(),
 614                         ty: Txt::TYPE, alg: 13, labels: 3, orig_ttl: 30, expiration: 1708449632,
 615                         inception: 1707234632, key_tag: 34530, key_name: "matcorallo.com.".try_into().unwrap(),
 616                         signature: base64::decode("elAhELwzkGpUMvzeiYZpg1+yRFPjmOeEd1ir1vYx2Dku9kzsXmAlejOYDPWdaJ6ekvHdMejCN/MtyI+iFAYqsw==").unwrap(),
 617                 };
 618                 (txts, rrsig)
 619         }
 620
 621         #[test]
 622         fn check_txt_record_a() {
 623                 let dnskeys = mattcorallo_dnskey().0;
 624                 let (txt, txt_rrsig) = mattcorallo_txt_record();
 625                 let txt_resp = [txt];
 626                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
 627         }
 628
 629         #[test]
 630         fn check_single_txt_proof() {
 631                 let mut rr_stream = Vec::new();
 632                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 633                 for rr in com_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 634                 for rr in mattcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 635                 let (txt, txt_rrsig) = mattcorallo_txt_record();
 636                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 637
 638                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
 639                 rrs.shuffle(&mut rand::rngs::OsRng);
 640                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
 641                 assert_eq!(verified_rrs.verified_rrs.len(), 1);
 642                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[0] {
 643                         assert_eq!(txt.name.as_str(), "matt.user._bitcoin-payment.mattcorallo.com.");
 644                         assert_eq!(txt.data, b"bitcoin:?b12=lno1qsgqmqvgm96frzdg8m0gc6nzeqffvzsqzrxqy32afmr3jn9ggkwg3egfwch2hy0l6jut6vfd8vpsc3h89l6u3dm4q2d6nuamav3w27xvdmv3lpgklhg7l5teypqz9l53hj7zvuaenh34xqsz2sa967yzqkylfu9xtcd5ymcmfp32h083e805y7jfd236w9afhavqqvl8uyma7x77yun4ehe9pnhu2gekjguexmxpqjcr2j822xr7q34p078gzslf9wpwz5y57alxu99s0z2ql0kfqvwhzycqq45ehh58xnfpuek80hw6spvwrvttjrrq9pphh0dpydh06qqspp5uq4gpyt6n9mwexde44qv7lstzzq60nr40ff38u27un6y53aypmx0p4qruk2tf9mjwqlhxak4znvna5y");
 645                 } else { panic!(); }
 646                 assert_eq!(verified_rrs.valid_from, 1707063650); // The TXT record RRSig was created last
 647                 assert_eq!(verified_rrs.expires, 1707631252); // The mattcorallo.com DS RRSig expires first
 648                 assert_eq!(verified_rrs.max_cache_ttl, 3600); // The TXT record had the shortest TTL
 649         }
 650
 651         #[test]
 652         fn check_txt_record_b() {
 653                 let dnskeys = matcorallo_dnskey().0;
 654                 let (txt, txt_rrsig) = matcorallo_txt_record();
 655                 let txt_resp = [txt];
 656                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
 657         }
 658
 659         #[test]
 660         fn check_cname_record() {
 661                 let dnskeys = matcorallo_dnskey().0;
 662                 let (cname, cname_rrsig) = matcorallo_cname_record();
 663                 let cname_resp = [cname];
 664                 verify_rrsig(&cname_rrsig, &dnskeys, cname_resp.iter().collect()).unwrap();
 665         }
 666
 667         #[test]
 668         fn check_multi_zone_proof() {
 669                 let mut rr_stream = Vec::new();
 670                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 671                 for rr in com_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 672                 for rr in mattcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 673                 let (txt, txt_rrsig) = mattcorallo_txt_record();
 674                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 675                 for rr in matcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 676                 let (txt, txt_rrsig) = matcorallo_txt_record();
 677                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 678                 let (cname, cname_rrsig) = matcorallo_cname_record();
 679                 for rr in [RR::CName(cname), RR::RRSig(cname_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 680
 681                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
 682                 rrs.shuffle(&mut rand::rngs::OsRng);
 683                 let mut verified_rrs = verify_rr_stream(&rrs).unwrap();
 684                 verified_rrs.verified_rrs.sort();
 685                 assert_eq!(verified_rrs.verified_rrs.len(), 3);
 686                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[0] {
 687                         assert_eq!(txt.name.as_str(), "matt.user._bitcoin-payment.mattcorallo.com.");
 688                         assert_eq!(txt.data, b"bitcoin:?b12=lno1qsgqmqvgm96frzdg8m0gc6nzeqffvzsqzrxqy32afmr3jn9ggkwg3egfwch2hy0l6jut6vfd8vpsc3h89l6u3dm4q2d6nuamav3w27xvdmv3lpgklhg7l5teypqz9l53hj7zvuaenh34xqsz2sa967yzqkylfu9xtcd5ymcmfp32h083e805y7jfd236w9afhavqqvl8uyma7x77yun4ehe9pnhu2gekjguexmxpqjcr2j822xr7q34p078gzslf9wpwz5y57alxu99s0z2ql0kfqvwhzycqq45ehh58xnfpuek80hw6spvwrvttjrrq9pphh0dpydh06qqspp5uq4gpyt6n9mwexde44qv7lstzzq60nr40ff38u27un6y53aypmx0p4qruk2tf9mjwqlhxak4znvna5y");
 689                 } else { panic!(); }
 690                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[1] {
 691                         assert_eq!(txt.name.as_str(), "txt_test.matcorallo.com.");
 692                         assert_eq!(txt.data, b"dnssec_prover_test");
 693                 } else { panic!(); }
 694                 if let RR::CName(cname) = &verified_rrs.verified_rrs[2] {
 695                         assert_eq!(cname.name.as_str(), "cname_test.matcorallo.com.");
 696                         assert_eq!(cname.canonical_name.as_str(), "txt_test.matcorallo.com.");
 697                 } else { panic!(); }
 698
 699                 let filtered_rrs =
 700                         verified_rrs.resolve_name(&"cname_test.matcorallo.com.".try_into().unwrap());
 701                 assert_eq!(filtered_rrs.len(), 1);
 702                 if let RR::Txt(txt) = &filtered_rrs[0] {
 703                         assert_eq!(txt.name.as_str(), "txt_test.matcorallo.com.");
 704                         assert_eq!(txt.data, b"dnssec_prover_test");
 705                 } else { panic!(); }
 706         }
 707
 708         #[test]
 709         fn check_wildcard_record() {
 710                 let dnskeys = matcorallo_dnskey().0;
 711                 let (txt, txt_rrsig) = matcorallo_wildcard_record();
 712                 let txt_resp = [txt];
 713                 verify_rrsig(&txt_rrsig, &dnskeys, txt_resp.iter().collect()).unwrap();
 714         }
 715
 716         #[test]
 717         fn check_wildcard_proof() {
 718                 let mut rr_stream = Vec::new();
 719                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 720                 for rr in com_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 721                 for rr in matcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 722                 let (cname, cname_rrsig, txt, txt_rrsig) = matcorallo_cname_wildcard_record();
 723                 for rr in [RR::CName(cname), RR::RRSig(cname_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 724                 for rr in [RR::Txt(txt), RR::RRSig(txt_rrsig)] { write_rr(&rr, 1, &mut rr_stream); }
 725
 726                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
 727                 rrs.shuffle(&mut rand::rngs::OsRng);
 728                 let mut verified_rrs = verify_rr_stream(&rrs).unwrap();
 729                 verified_rrs.verified_rrs.sort();
 730                 assert_eq!(verified_rrs.verified_rrs.len(), 2);
 731                 if let RR::Txt(txt) = &verified_rrs.verified_rrs[0] {
 732                         assert_eq!(txt.name.as_str(), "cname.wildcard_test.matcorallo.com.");
 733                         assert_eq!(txt.data, b"wildcard_test");
 734                 } else { panic!(); }
 735                 if let RR::CName(cname) = &verified_rrs.verified_rrs[1] {
 736                         assert_eq!(cname.name.as_str(), "test.cname_wildcard_test.matcorallo.com.");
 737                         assert_eq!(cname.canonical_name.as_str(), "cname.wildcard_test.matcorallo.com.");
 738                 } else { panic!(); }
 739
 740                 let filtered_rrs =
 741                         verified_rrs.resolve_name(&"test.cname_wildcard_test.matcorallo.com.".try_into().unwrap());
 742                 assert_eq!(filtered_rrs.len(), 1);
 743                 if let RR::Txt(txt) = &filtered_rrs[0] {
 744                         assert_eq!(txt.name.as_str(), "cname.wildcard_test.matcorallo.com.");
 745                         assert_eq!(txt.data, b"wildcard_test");
 746                 } else { panic!(); }
 747         }
 748
 749         #[test]
 750         fn check_txt_sort_order() {
 751                 let mut rr_stream = Vec::new();
 752                 for rr in root_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 753                 for rr in com_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 754                 for rr in matcorallo_dnskey().1 { write_rr(&rr, 1, &mut rr_stream); }
 755                 let (mut txts, rrsig) = matcorallo_txt_sort_edge_cases_records();
 756                 write_rr(&rrsig, 1, &mut rr_stream);
 757                 for txt in txts.iter() { write_rr(txt, 1, &mut rr_stream); }
 758
 759                 let mut rrs = parse_rr_stream(&rr_stream).unwrap();
 760                 rrs.shuffle(&mut rand::rngs::OsRng);
 761                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
 762                 let mut verified_txts = verified_rrs.verified_rrs
 763                         .iter().map(|rr| if let RR::Txt(txt) = rr { txt.clone() } else { panic!(); })
 764                         .collect::<Vec<_>>();
 765                 verified_txts.sort();
 766                 txts.sort();
 767                 assert_eq!(verified_txts, txts);
 768         }
 769
 770         #[test]
 771         fn rfc9102_parse_test() {
 772                 // Note that this is the `AuthenticationChain` field only, and ignores the
 773                 // `ExtSupportLifetime` field (stripping the top two 0 bytes from the front).
 774 let rfc9102_test_vector = Vec::from_hex("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").unwrap();
 775
 776                 let mut rrs = parse_rr_stream(&rfc9102_test_vector).unwrap();
 777                 rrs.shuffle(&mut rand::rngs::OsRng);
 778                 let verified_rrs = verify_rr_stream(&rrs).unwrap();
 779                 assert_eq!(verified_rrs.verified_rrs.len(), 1);
 780                 if let RR::TLSA(tlsa) = &verified_rrs.verified_rrs[0] {
 781                         assert_eq!(tlsa.cert_usage, 3);
 782                         assert_eq!(tlsa.selector, 1);
 783                         assert_eq!(tlsa.data_ty, 1);
 784                         assert_eq!(tlsa.data, Vec::from_hex("8bd1da95272f7fa4ffb24137fc0ed03aae67e5c4d8b3c50734e1050a7920b922").unwrap());
 785                 } else { panic!(); }
 786         }
 787 }