use bitcoin::hashes::{Hash, HashEngine, sha256};
use bitcoin::secp256k1::{Message, PublicKey, Secp256k1, self};
use bitcoin::secp256k1::schnorr::Signature;
-use core::convert::AsRef;
use crate::io;
use crate::util::ser::{BigSize, Readable, Writeable, Writer};
+#[allow(unused_imports)]
use crate::prelude::*;
/// Valid type range for signature TLV records.
}
impl TaggedHash {
+ /// Creates a tagged hash with the given parameters.
+ ///
+ /// Panics if `bytes` is not a well-formed TLV stream containing at least one TLV record.
+ pub(super) fn from_valid_tlv_stream_bytes(tag: &'static str, bytes: &[u8]) -> Self {
+ let tlv_stream = TlvStream::new(bytes);
+ Self::from_tlv_stream(tag, tlv_stream)
+ }
+
/// Creates a tagged hash with the given parameters.
///
/// Panics if `tlv_stream` is not a well-formed TLV stream containing at least one TLV record.
- pub(super) fn new(tag: &'static str, tlv_stream: &[u8]) -> Self {
+ pub(super) fn from_tlv_stream<'a, I: core::iter::Iterator<Item = TlvRecord<'a>>>(
+ tag: &'static str, tlv_stream: I
+ ) -> Self {
let tag_hash = sha256::Hash::hash(tag.as_bytes());
let merkle_root = root_hash(tlv_stream);
- let digest = Message::from_slice(&tagged_hash(tag_hash, merkle_root)).unwrap();
+ let digest = Message::from_slice(tagged_hash(tag_hash, merkle_root).as_byte_array()).unwrap();
Self {
tag,
merkle_root,
pub fn merkle_root(&self) -> sha256::Hash {
self.merkle_root
}
+
+ pub(super) fn to_bytes(&self) -> [u8; 32] {
+ *self.digest.as_ref()
+ }
}
impl AsRef<TaggedHash> for TaggedHash {
/// Error when signing messages.
#[derive(Debug, PartialEq)]
-pub enum SignError<E> {
+pub enum SignError {
/// User-defined error when signing the message.
- Signing(E),
+ Signing,
/// Error when verifying the produced signature using the given pubkey.
Verification(secp256k1::Error),
}
+/// A function for signing a [`TaggedHash`].
+pub(super) trait SignFn<T: AsRef<TaggedHash>> {
+ /// Signs a [`TaggedHash`] computed over the merkle root of `message`'s TLV stream.
+ fn sign(&self, message: &T) -> Result<Signature, ()>;
+}
+
+impl<F> SignFn<TaggedHash> for F
+where
+ F: Fn(&TaggedHash) -> Result<Signature, ()>,
+{
+ fn sign(&self, message: &TaggedHash) -> Result<Signature, ()> {
+ self(message)
+ }
+}
+
/// Signs a [`TaggedHash`] computed over the merkle root of `message`'s TLV stream, checking if it
/// can be verified with the supplied `pubkey`.
///
///
/// [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
/// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
-pub(super) fn sign_message<F, E, T>(
- sign: F, message: &T, pubkey: PublicKey,
-) -> Result<Signature, SignError<E>>
+pub(super) fn sign_message<F, T>(
+ f: F, message: &T, pubkey: PublicKey,
+) -> Result<Signature, SignError>
where
- F: FnOnce(&T) -> Result<Signature, E>,
+ F: SignFn<T>,
T: AsRef<TaggedHash>,
{
- let signature = sign(message).map_err(|e| SignError::Signing(e))?;
+ let signature = f.sign(message).map_err(|()| SignError::Signing)?;
let digest = message.as_ref().as_digest();
let pubkey = pubkey.into();
/// Computes a merkle root hash for the given data, which must be a well-formed TLV stream
/// containing at least one TLV record.
-fn root_hash(data: &[u8]) -> sha256::Hash {
+fn root_hash<'a, I: core::iter::Iterator<Item = TlvRecord<'a>>>(tlv_stream: I) -> sha256::Hash {
+ let mut tlv_stream = tlv_stream.peekable();
let nonce_tag = tagged_hash_engine(sha256::Hash::from_engine({
- let first_tlv_record = TlvStream::new(&data[..]).next().unwrap();
+ let first_tlv_record = tlv_stream.peek().unwrap();
let mut engine = sha256::Hash::engine();
engine.input("LnNonce".as_bytes());
engine.input(first_tlv_record.record_bytes);
let branch_tag = tagged_hash_engine(sha256::Hash::hash("LnBranch".as_bytes()));
let mut leaves = Vec::new();
- let tlv_stream = TlvStream::new(&data[..]);
- for record in tlv_stream.skip_signatures() {
+ for record in TlvStream::skip_signatures(tlv_stream) {
leaves.push(tagged_hash_from_engine(leaf_tag.clone(), &record.record_bytes));
leaves.push(tagged_hash_from_engine(nonce_tag.clone(), &record.type_bytes));
}
.take_while(move |record| take_range.contains(&record.r#type))
}
- fn skip_signatures(self) -> core::iter::Filter<TlvStream<'a>, fn(&TlvRecord) -> bool> {
- self.filter(|record| !SIGNATURE_TYPES.contains(&record.r#type))
+ fn skip_signatures(
+ tlv_stream: impl core::iter::Iterator<Item = TlvRecord<'a>>
+ ) -> impl core::iter::Iterator<Item = TlvRecord<'a>> {
+ tlv_stream.filter(|record| !SIGNATURE_TYPES.contains(&record.r#type))
}
}
#[inline]
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
let tlv_stream = TlvStream::new(self.0);
- for record in tlv_stream.skip_signatures() {
+ for record in TlvStream::skip_signatures(tlv_stream) {
writer.write_all(record.record_bytes)?;
}
Ok(())
use super::{SIGNATURE_TYPES, TlvStream, WithoutSignatures};
use bitcoin::hashes::{Hash, sha256};
+ use bitcoin::hashes::hex::FromHex;
use bitcoin::secp256k1::{KeyPair, Message, Secp256k1, SecretKey};
use bitcoin::secp256k1::schnorr::Signature;
- use core::convert::Infallible;
use crate::offers::offer::{Amount, OfferBuilder};
- use crate::offers::invoice_request::InvoiceRequest;
+ use crate::offers::invoice_request::{InvoiceRequest, UnsignedInvoiceRequest};
use crate::offers::parse::Bech32Encode;
use crate::offers::test_utils::{payer_pubkey, recipient_pubkey};
use crate::util::ser::Writeable;
macro_rules! tlv2 { () => { "02080000010000020003" } }
macro_rules! tlv3 { () => { "03310266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c0351800000000000000010000000000000002" } }
assert_eq!(
- super::root_hash(&hex::decode(tlv1!()).unwrap()),
- sha256::Hash::from_slice(&hex::decode("b013756c8fee86503a0b4abdab4cddeb1af5d344ca6fc2fa8b6c08938caa6f93").unwrap()).unwrap(),
+ super::root_hash(TlvStream::new(&<Vec<u8>>::from_hex(tlv1!()).unwrap())),
+ sha256::Hash::from_slice(&<Vec<u8>>::from_hex("b013756c8fee86503a0b4abdab4cddeb1af5d344ca6fc2fa8b6c08938caa6f93").unwrap()).unwrap(),
);
assert_eq!(
- super::root_hash(&hex::decode(concat!(tlv1!(), tlv2!())).unwrap()),
- sha256::Hash::from_slice(&hex::decode("c3774abbf4815aa54ccaa026bff6581f01f3be5fe814c620a252534f434bc0d1").unwrap()).unwrap(),
+ super::root_hash(TlvStream::new(&<Vec<u8>>::from_hex(concat!(tlv1!(), tlv2!())).unwrap())),
+ sha256::Hash::from_slice(&<Vec<u8>>::from_hex("c3774abbf4815aa54ccaa026bff6581f01f3be5fe814c620a252534f434bc0d1").unwrap()).unwrap(),
);
assert_eq!(
- super::root_hash(&hex::decode(concat!(tlv1!(), tlv2!(), tlv3!())).unwrap()),
- sha256::Hash::from_slice(&hex::decode("ab2e79b1283b0b31e0b035258de23782df6b89a38cfa7237bde69aed1a658c5d").unwrap()).unwrap(),
+ super::root_hash(TlvStream::new(&<Vec<u8>>::from_hex(concat!(tlv1!(), tlv2!(), tlv3!())).unwrap())),
+ sha256::Hash::from_slice(&<Vec<u8>>::from_hex("ab2e79b1283b0b31e0b035258de23782df6b89a38cfa7237bde69aed1a658c5d").unwrap()).unwrap(),
);
}
fn calculates_merkle_root_hash_from_invoice_request() {
let secp_ctx = Secp256k1::new();
let recipient_pubkey = {
- let secret_key = SecretKey::from_slice(&hex::decode("4141414141414141414141414141414141414141414141414141414141414141").unwrap()).unwrap();
+ let secret_key = SecretKey::from_slice(&<Vec<u8>>::from_hex("4141414141414141414141414141414141414141414141414141414141414141").unwrap()).unwrap();
KeyPair::from_secret_key(&secp_ctx, &secret_key).public_key()
};
let payer_keys = {
- let secret_key = SecretKey::from_slice(&hex::decode("4242424242424242424242424242424242424242424242424242424242424242").unwrap()).unwrap();
+ let secret_key = SecretKey::from_slice(&<Vec<u8>>::from_hex("4242424242424242424242424242424242424242424242424242424242424242").unwrap()).unwrap();
KeyPair::from_secret_key(&secp_ctx, &secret_key)
};
.build_unchecked()
.request_invoice(vec![0; 8], payer_keys.public_key()).unwrap()
.build_unchecked()
- .sign::<_, Infallible>(
- |message| Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &payer_keys))
+ .sign(|message: &UnsignedInvoiceRequest|
+ Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &payer_keys))
)
.unwrap();
assert_eq!(
"lnr1qqyqqqqqqqqqqqqqqcp4256ypqqkgzshgysy6ct5dpjk6ct5d93kzmpq23ex2ct5d9ek293pqthvwfzadd7jejes8q9lhc4rvjxd022zv5l44g6qah82ru5rdpnpjkppqvjx204vgdzgsqpvcp4mldl3plscny0rt707gvpdh6ndydfacz43euzqhrurageg3n7kafgsek6gz3e9w52parv8gs2hlxzk95tzeswywffxlkeyhml0hh46kndmwf4m6xma3tkq2lu04qz3slje2rfthc89vss",
);
assert_eq!(
- super::root_hash(&invoice_request.bytes[..]),
- sha256::Hash::from_slice(&hex::decode("608407c18ad9a94d9ea2bcdbe170b6c20c462a7833a197621c916f78cf18e624").unwrap()).unwrap(),
+ super::root_hash(TlvStream::new(&invoice_request.bytes[..])),
+ sha256::Hash::from_slice(&<Vec<u8>>::from_hex("608407c18ad9a94d9ea2bcdbe170b6c20c462a7833a197621c916f78cf18e624").unwrap()).unwrap(),
);
assert_eq!(
invoice_request.signature(),
- Signature::from_slice(&hex::decode("b8f83ea3288cfd6ea510cdb481472575141e8d8744157f98562d162cc1c472526fdb24befefbdebab4dbb726bbd1b7d8aec057f8fa805187e5950d2bbe0e5642").unwrap()).unwrap(),
+ Signature::from_slice(&<Vec<u8>>::from_hex("b8f83ea3288cfd6ea510cdb481472575141e8d8744157f98562d162cc1c472526fdb24befefbdebab4dbb726bbd1b7d8aec057f8fa805187e5950d2bbe0e5642").unwrap()).unwrap(),
);
}
let tagged_hash = unsigned_invoice_request.as_ref();
let expected_digest = unsigned_invoice_request.as_ref().as_digest();
let tag = sha256::Hash::hash(tagged_hash.tag().as_bytes());
- let actual_digest = Message::from_slice(&super::tagged_hash(tag, tagged_hash.merkle_root()))
+ let actual_digest = Message::from_slice(super::tagged_hash(tag, tagged_hash.merkle_root()).as_byte_array())
.unwrap();
assert_eq!(*expected_digest, actual_digest);
}
.build_unchecked()
.request_invoice(vec![0; 8], payer_keys.public_key()).unwrap()
.build_unchecked()
- .sign::<_, Infallible>(
- |message| Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &payer_keys))
+ .sign(|message: &UnsignedInvoiceRequest|
+ Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &payer_keys))
)
.unwrap();
.build_unchecked()
.request_invoice(vec![0; 8], payer_keys.public_key()).unwrap()
.build_unchecked()
- .sign::<_, Infallible>(
- |message| Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &payer_keys))
+ .sign(|message: &UnsignedInvoiceRequest|
+ Ok(secp_ctx.sign_schnorr_no_aux_rand(message.as_ref().as_digest(), &payer_keys))
)
.unwrap();
projects / rust-lightning / blobdiff