use crate::hashes::Hash;
use crate::hash_types::Sighash;
use crate::blockdata::script::Script;
use crate::blockdata::witness::Witness;
use crate::blockdata::transaction::{Transaction, TxIn, EcdsaSighashType};
use crate::blockdata::locktime::LockTime;
use crate::consensus::{encode, Encodable};
use crate::io;
use core::ops::{Deref, DerefMut};
use crate::util::sighash;
#[derive(Clone, PartialEq, Eq, Debug)]
#[deprecated(since = "0.24.0", note = "please use [sighash::SighashCache] instead")]
pub struct SighashComponents {
tx_version: i32,
tx_locktime: LockTime,
pub hash_prevouts: Sighash,
pub hash_sequence: Sighash,
pub hash_outputs: Sighash,
}
#[allow(deprecated)]
impl SighashComponents {
pub fn new(tx: &Transaction) -> SighashComponents {
let hash_prevouts = {
let mut enc = Sighash::engine();
for txin in &tx.input {
txin.previous_output.consensus_encode(&mut enc).expect("engines don't error");
}
Sighash::from_engine(enc)
};
let hash_sequence = {
let mut enc = Sighash::engine();
for txin in &tx.input {
txin.sequence.consensus_encode(&mut enc).expect("engines don't error");
}
Sighash::from_engine(enc)
};
let hash_outputs = {
let mut enc = Sighash::engine();
for txout in &tx.output {
txout.consensus_encode(&mut enc).expect("engines don't error");
}
Sighash::from_engine(enc)
};
SighashComponents {
tx_version: tx.version,
tx_locktime: tx.lock_time.into(),
hash_prevouts,
hash_sequence,
hash_outputs,
}
}
pub fn sighash_all(&self, txin: &TxIn, script_code: &Script, value: u64) -> Sighash {
let mut enc = Sighash::engine();
self.tx_version.consensus_encode(&mut enc).expect("engines don't error");
self.hash_prevouts.consensus_encode(&mut enc).expect("engines don't error");
self.hash_sequence.consensus_encode(&mut enc).expect("engines don't error");
txin
.previous_output
.consensus_encode(&mut enc)
.expect("engines don't error");
script_code.consensus_encode(&mut enc).expect("engines don't error");
value.consensus_encode(&mut enc).expect("engines don't error");
txin.sequence.consensus_encode(&mut enc).expect("engines don't error");
self.hash_outputs.consensus_encode(&mut enc).expect("engines don't error");
self.tx_locktime.consensus_encode(&mut enc).expect("engines don't error");
1u32.consensus_encode(&mut enc).expect("engines don't error"); Sighash::from_engine(enc)
}
}
#[deprecated(since = "0.28.0", note = "please use [sighash::SighashCache] instead")]
pub struct SigHashCache<R: Deref<Target = Transaction>> {
cache: sighash::SighashCache<R>,
}
#[allow(deprecated)]
impl<R: Deref<Target = Transaction>> SigHashCache<R> {
pub fn new(tx: R) -> Self {
Self { cache: sighash::SighashCache::new(tx) }
}
pub fn encode_signing_data_to<Write: io::Write>(
&mut self,
writer: Write,
input_index: usize,
script_code: &Script,
value: u64,
sighash_type: EcdsaSighashType,
) -> Result<(), encode::Error> {
self.cache
.segwit_encode_signing_data_to(writer, input_index, script_code, value, sighash_type)
.expect("input_index greater than tx input len");
Ok(())
}
pub fn signature_hash(
&mut self,
input_index: usize,
script_code: &Script,
value: u64,
sighash_type: EcdsaSighashType
) -> Sighash {
let mut enc = Sighash::engine();
self.encode_signing_data_to(&mut enc, input_index, script_code, value, sighash_type)
.expect("engines don't error");
Sighash::from_engine(enc)
}
}
#[allow(deprecated)]
impl<R: DerefMut<Target = Transaction>> SigHashCache<R> {
pub fn access_witness(&mut self, input_index: usize) -> &mut Witness {
self.cache.witness_mut(input_index).unwrap()
}
}
#[cfg(test)]
#[allow(deprecated)]
mod tests {
use std::str::FromStr;
use crate::hash_types::Sighash;
use crate::blockdata::script::Script;
use crate::blockdata::transaction::Transaction;
use crate::blockdata::locktime::LockTime;
use crate::consensus::encode::deserialize;
use crate::network::constants::Network;
use crate::util::address::Address;
use crate::util::key::PublicKey;
use crate::hashes::hex::FromHex;
use crate::internal_macros::{hex_hash, hex_script};
use super::*;
fn p2pkh_hex(pk: &str) -> Script {
let pk: PublicKey = PublicKey::from_str(pk).unwrap();
Address::p2pkh(&pk, Network::Groestlcoin).script_pubkey()
}
fn run_test_sighash_bip143(tx: &str, script: &str, input_index: usize, value: u64, hash_type: u32, expected_result: &str) {
let tx: Transaction = deserialize(&Vec::<u8>::from_hex(tx).unwrap()[..]).unwrap();
let script = Script::from(Vec::<u8>::from_hex(script).unwrap());
let raw_expected = Sighash::from_hex(expected_result).unwrap();
let expected_result = Sighash::from_slice(&raw_expected[..]).unwrap();
let mut cache = SigHashCache::new(&tx);
let sighash_type = EcdsaSighashType::from_u32_consensus(hash_type);
let actual_result = cache.signature_hash(input_index, &script, value, sighash_type);
assert_eq!(actual_result, expected_result);
}
#[test]
fn bip143_p2wpkh() {
let tx = deserialize::<Transaction>(
&Vec::from_hex(
"0100000002fff7f7881a8099afa6940d42d1e7f6362bec38171ea3edf433541db4e4ad969f000000\
0000eeffffffef51e1b804cc89d182d279655c3aa89e815b1b309fe287d9b2b55d57b90ec68a01000000\
00ffffffff02202cb206000000001976a9148280b37df378db99f66f85c95a783a76ac7a6d5988ac9093\
510d000000001976a9143bde42dbee7e4dbe6a21b2d50ce2f0167faa815988ac11000000",
).unwrap()[..],
).unwrap();
let witness_script = p2pkh_hex("025476c2e83188368da1ff3e292e7acafcdb3566bb0ad253f62fc70f07aeee6357");
let value = 600_000_000;
let comp = SighashComponents::new(&tx);
assert_eq!(
comp,
SighashComponents {
tx_version: 1,
tx_locktime: LockTime::from_consensus(17),
hash_prevouts: hex_hash!(
Sighash, "c771f7ed8ee6224d08700833d1c6d31e7a1f6b7a3840c4e186c22136e8c9a6ed"
),
hash_sequence: hex_hash!(
Sighash, "b258c7ef98e1770484c86e4023c5b7361eb8e02e56b6fb7233af17ebe9eb017e"
),
hash_outputs: hex_hash!(
Sighash, "48f88af72cd8cc9af8cbeb53b6c60b20b4a074dcd5be578cbc279311c7d72ea9"
),
}
);
assert_eq!(
comp.sighash_all(&tx.input[1], &witness_script, value),
hex_hash!(Sighash, "78d30165e9873c05d3e3eea458d41559dbb42ad5bb79db4e5be4827a05ed62b4")
);
}
#[test]
fn bip143_p2wpkh_nested_in_p2sh() {
let tx = deserialize::<Transaction>(
&Vec::from_hex(
"0100000001db6b1b20aa0fd7b23880be2ecbd4a98130974cf4748fb66092ac4d3ceb1a5477010000\
0000feffffff02b8b4eb0b000000001976a914a457b684d7f0d539a46a45bbc043f35b59d0d96388ac00\
08af2f000000001976a914fd270b1ee6abcaea97fea7ad0402e8bd8ad6d77c88ac92040000",
).unwrap()[..],
).unwrap();
let witness_script = p2pkh_hex("03ad1d8e89212f0b92c74d23bb710c00662ad1470198ac48c43f7d6f93a2a26873");
let value = 1_000_000_000;
let comp = SighashComponents::new(&tx);
assert_eq!(
comp,
SighashComponents {
tx_version: 1,
tx_locktime: LockTime::from_consensus(1170),
hash_prevouts: hex_hash!(
Sighash, "cddf06e3e7cc7c2b515aa8960e7ee526ffe975f30a421ca092075ade5cf47533"
),
hash_sequence: hex_hash!(
Sighash, "b4248c210a2905b94345e1a8414d0e12efcfb2f4f0f2397159a71283397a0ccd"
),
hash_outputs: hex_hash!(
Sighash, "324d2443ed14b2ca1e7af61aba2d7fa517c5b8feb6433106b67a653a98b5c1a1"
),
}
);
assert_eq!(
comp.sighash_all(&tx.input[0], &witness_script, value),
hex_hash!(Sighash, "12885c3df56d146075151c6dbf2afe9506333d4f3e6cea38f58ca8520805a30f")
);
}
#[test]
fn bip143_p2wsh_nested_in_p2sh() {
let tx = deserialize::<Transaction>(
&Vec::from_hex(
"010000000136641869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e0100000000\
ffffffff0200e9a435000000001976a914389ffce9cd9ae88dcc0631e88a821ffdbe9bfe2688acc0832f\
05000000001976a9147480a33f950689af511e6e84c138dbbd3c3ee41588ac00000000").unwrap()[..],
).unwrap();
let witness_script = hex_script!(
"56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba32103b28f0c28\
bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21034b8113d703413d57761b8b\
9781957b8c0ac1dfe69f492580ca4195f50376ba4a21033400f6afecb833092a9a21cfdf1ed1376e58\
c5d1f47de74683123987e967a8f42103a6d48b1131e94ba04d9737d61acdaa1322008af9602b3b1486\
2c07a1789aac162102d8b661b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b\
56ae"
);
let value = 987654321;
let comp = SighashComponents::new(&tx);
assert_eq!(
comp,
SighashComponents {
tx_version: 1,
tx_locktime: LockTime::ZERO,
hash_prevouts: hex_hash!(
Sighash, "1f1f6dc580200b32c0579c35acc3f5e54045e46fe1b6e6d3dbe75e3ad9e5125d"
),
hash_sequence: hex_hash!(
Sighash, "ad95131bc0b799c0b1af477fb14fcf26a6a9f76079e48bf090acb7e8367bfd0e"
),
hash_outputs: hex_hash!(
Sighash, "691738022230671f6f97f0f6343ac62568f82a3e02bfb20dba155d509480c523"
),
}
);
assert_eq!(
comp.sighash_all(&tx.input[0], &witness_script, value),
hex_hash!(Sighash, "f49b945ea2188fbb44771c80c51e3b5185e90748b4600dd45c3e6268f634fa8a")
);
}
#[test]
fn bip143_sighash_flags() {
run_test_sighash_bip143("0200000001cf309ee0839b8aaa3fbc84f8bd32e9c6357e99b49bf6a3af90308c68e762f1d70100000000feffffff0288528c61000000001600146e8d9e07c543a309dcdeba8b50a14a991a658c5be0aebb0000000000160014698d8419804a5d5994704d47947889ff7620c004db000000", "76a91462744660c6b5133ddeaacbc57d2dc2d7b14d0b0688ac", 0, 1648888940, 0x01, "d056435d9246c2b45512c14ee13452f92be9e4ebe0ec2fba5eb73c8e5bc996d3");
run_test_sighash_bip143("0200000001cf309ee0839b8aaa3fbc84f8bd32e9c6357e99b49bf6a3af90308c68e762f1d70100000000feffffff0288528c61000000001600146e8d9e07c543a309dcdeba8b50a14a991a658c5be0aebb0000000000160014698d8419804a5d5994704d47947889ff7620c004db000000", "76a91462744660c6b5133ddeaacbc57d2dc2d7b14d0b0688ac", 0, 1648888940, 0x02, "0aa07aaf9f5259a7e42be6447c15b075e50d8a3b69d9710f0a527c11fdef8d7e");
run_test_sighash_bip143("0200000001cf309ee0839b8aaa3fbc84f8bd32e9c6357e99b49bf6a3af90308c68e762f1d70100000000feffffff0288528c61000000001600146e8d9e07c543a309dcdeba8b50a14a991a658c5be0aebb0000000000160014698d8419804a5d5994704d47947889ff7620c004db000000", "76a91462744660c6b5133ddeaacbc57d2dc2d7b14d0b0688ac", 0, 1648888940, 0x03, "3a817c8845041998a9216046253f3de03da34ee86d587e26371269fcd95589a4");
run_test_sighash_bip143("0200000001cf309ee0839b8aaa3fbc84f8bd32e9c6357e99b49bf6a3af90308c68e762f1d70100000000feffffff0288528c61000000001600146e8d9e07c543a309dcdeba8b50a14a991a658c5be0aebb0000000000160014698d8419804a5d5994704d47947889ff7620c004db000000", "76a91462744660c6b5133ddeaacbc57d2dc2d7b14d0b0688ac", 0, 1648888940, 0x81, "b54f97f21a3dbb1c385dcfd2f031d2e92b11dc6af8c540cdc7b94084061ddb50");
run_test_sighash_bip143("0200000001cf309ee0839b8aaa3fbc84f8bd32e9c6357e99b49bf6a3af90308c68e762f1d70100000000feffffff0288528c61000000001600146e8d9e07c543a309dcdeba8b50a14a991a658c5be0aebb0000000000160014698d8419804a5d5994704d47947889ff7620c004db000000", "76a91462744660c6b5133ddeaacbc57d2dc2d7b14d0b0688ac", 0, 1648888940, 0x82, "73ac3205753518d3212d6ee84bcb6cda6817321a7bab8f5d54093a6af2a00590");
run_test_sighash_bip143("0200000001cf309ee0839b8aaa3fbc84f8bd32e9c6357e99b49bf6a3af90308c68e762f1d70100000000feffffff0288528c61000000001600146e8d9e07c543a309dcdeba8b50a14a991a658c5be0aebb0000000000160014698d8419804a5d5994704d47947889ff7620c004db000000", "76a91462744660c6b5133ddeaacbc57d2dc2d7b14d0b0688ac", 0, 1648888940, 0x83, "7d61149f5b04ce63835f6e14bd54e4e09ac24ac9a6bddfc532ef24e4af90cfa4");
}
}