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Add Borromean range proof verifying functionality

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This commit is contained in:
Boog900
2023-06-23 12:23:33 +01:00
parent 71ffcc8ef7
commit ac30e3afaa
4 changed files with 90 additions and 18 deletions
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19
coins/monero/src/transaction.rs
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@@ -201,6 +201,10 @@ impl TransactionPrefix {
prefix.extra = read_vec(read_byte, r)?;
Ok(prefix)
}
pub fn hash(&self) -> [u8; 32] {
hash(&self.serialize())
}
}
/// Monero transaction. For version 1, rct_signatures still contains an accurate fee value.
@@ -254,18 +258,17 @@ impl Transaction {
};
if prefix.version == 1 {
let read_sig =
|r: &mut R| -> io::Result<(Scalar, Scalar)> { Ok((read_scalar(r)?, read_scalar(r)?)) };
signatures = prefix
.inputs
.iter()
.filter_map(|input| match input {
Input::ToKey { key_offsets, .. } => {
Some(key_offsets.iter().map(|_| (read_sig(r))).collect::<Result<Vec<(_, _)>, _>>())
Some(key_offsets.iter().map(|_| Ok((read_scalar(r)?, read_scalar(r)?))).collect::<Result<_, io::Error>>())
}
_ => None,
})
.collect::<Result<Vec<Vec<(Scalar, Scalar)>>, _>>()?;
.collect::<Result<_, _>>()?;
rct_signatures.base.fee = prefix
.inputs
@@ -304,9 +307,7 @@ impl Transaction {
} else {
let mut hashes = Vec::with_capacity(96);
self.prefix.write(&mut buf).unwrap();
hashes.extend(hash(&buf));
buf.clear();
hashes.extend(self.prefix.hash());
self.rct_signatures.base.write(&mut buf, self.rct_signatures.prunable.rct_type()).unwrap();
hashes.extend(hash(&buf));
@@ -330,9 +331,7 @@ impl Transaction {
let mut buf = Vec::with_capacity(2048);
let mut sig_hash = Vec::with_capacity(96);
self.prefix.write(&mut buf).unwrap();
sig_hash.extend(hash(&buf));
buf.clear();
sig_hash.extend(self.prefix.hash());
self.rct_signatures.base.write(&mut buf, self.rct_signatures.prunable.rct_type()).unwrap();
sig_hash.extend(hash(&buf));