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Make Amount opaque, and use it more

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This helps to ensure type-safety of values that are required to satisfy
zatoshi range bounds.
This commit is contained in:
Jack Grigg
2019-07-25 22:37:16 +01:00
parent ab60b8804a
commit 59ed258c7f
12 changed files with 203 additions and 89 deletions
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11
zcash_primitives/src/transaction/sighash.rs
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@@ -30,13 +30,6 @@ macro_rules! update_u32 {
};
}
macro_rules! update_i64 {
($h:expr, $value:expr, $tmp:expr) => {
(&mut $tmp[..8]).write_i64::<LittleEndian>($value).unwrap();
$h.update(&$tmp[..8]);
};
}
macro_rules! update_hash {
($h:expr, $cond:expr, $value:expr) => {
if $cond {
@@ -214,7 +207,7 @@ pub fn signature_hash_data(
update_u32!(h, tx.lock_time, tmp);
update_u32!(h, tx.expiry_height, tmp);
if sigversion == SigHashVersion::Sapling {
update_i64!(h, tx.value_balance.0, tmp);
h.update(&tx.value_balance.to_i64_le_bytes());
}
update_u32!(h, hash_type, tmp);
@@ -222,7 +215,7 @@ pub fn signature_hash_data(
let mut data = vec![];
tx.vin[n].prevout.write(&mut data).unwrap();
script_code.write(&mut data).unwrap();
(&mut data).write_i64::<LittleEndian>(amount.0).unwrap();
data.extend_from_slice(&amount.to_i64_le_bytes());
(&mut data)
.write_u32::<LittleEndian>(tx.vin[n].sequence)
.unwrap();