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librustzcash
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Inline write_le

This commit is contained in:
Jack Grigg 2019-11-04 23:48:49 +00:00
parent 0028048800
commit 7722b1a50b
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GPG Key ID: 9E8255172BBF9898
1 changed files with 6 additions and 12 deletions
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18
librustzcash/src/rustzcash.rs
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@ -72,13 +72,6 @@ static mut SAPLING_SPEND_PARAMS: Option<Parameters<Bls12>> = None;
static mut SAPLING_OUTPUT_PARAMS: Option<Parameters<Bls12>> = None;
static mut SPROUT_GROTH16_PARAMS_PATH: Option<PathBuf> = None;
/// Writes an FrRepr to [u8] of length 32
fn write_le(f: FrRepr, to: &mut [u8]) {
assert_eq!(to.len(), 32);
f.write_le(to).expect("length is 32 bytes");
}
/// Reads an FrRepr from a [u8] of length 32.
/// This will panic (abort) if length provided is
/// not correct.
@ -244,8 +237,7 @@ pub extern "C" fn librustzcash_tree_uncommitted(result: *mut [c_uchar; 32]) {
// Should be okay, caller is responsible for ensuring the pointer
// is a valid pointer to 32 bytes that can be mutated.
let result = unsafe { &mut *result };
write_le(tmp, &mut result[..]);
tmp.write_le(&mut result[..]).expect("length is 32 bytes");
}
#[no_mangle]
@ -270,8 +262,7 @@ pub extern "C" fn librustzcash_merkle_hash(
// Should be okay, caller is responsible for ensuring the pointer
// is a valid pointer to 32 bytes that can be mutated.
let result = unsafe { &mut *result };
write_le(tmp, &mut result[..]);
tmp.write_le(&mut result[..]).expect("length is 32 bytes");
}
#[no_mangle] // ToScalar
@ -494,7 +485,10 @@ pub extern "C" fn librustzcash_sapling_compute_cm(
};
let result = unsafe { &mut *result };
write_le(note.cm(&JUBJUB).into_repr(), &mut result[..]);
note.cm(&JUBJUB)
.into_repr()
.write_le(&mut result[..])
.expect("length is 32 bytes");
true
}