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Refactor from_okm_fuzz test to use chunks_exact_mut() instead of repetitive byte ranges #1628

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Refactor from_okm_fuzz test to use chunks_exact_mut() instead of repetitive byte ranges #1628

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1282acc
Update hash2curve.rs
zeevick10 Jan 22, 2026
011a59d
Update hash2curve.rs
zeevick10 Jan 22, 2026
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22 changes: 9 additions & 13 deletions p521/src/arithmetic/hash2curve.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -364,19 +364,15 @@ mod tests {
b12 in num::u16::ANY,
)| {
let mut data = Array::default();
data[..8].copy_from_slice(&b0.to_be_bytes());
data[8..16].copy_from_slice(&b1.to_be_bytes());
data[16..24].copy_from_slice(&b2.to_be_bytes());
data[24..32].copy_from_slice(&b3.to_be_bytes());
data[32..40].copy_from_slice(&b4.to_be_bytes());
data[40..48].copy_from_slice(&b5.to_be_bytes());
data[48..56].copy_from_slice(&b6.to_be_bytes());
data[56..64].copy_from_slice(&b7.to_be_bytes());
data[64..72].copy_from_slice(&b8.to_be_bytes());
data[72..80].copy_from_slice(&b9.to_be_bytes());
data[80..88].copy_from_slice(&b10.to_be_bytes());
data[88..96].copy_from_slice(&b11.to_be_bytes());
data[96..].copy_from_slice(&b12.to_be_bytes());

let blocks = [b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11];
let mut chunks = data.chunks_exact_mut(8);
for (chunk, block) in chunks.by_ref().zip(blocks.iter()) {
chunk.copy_from_slice(&block.to_be_bytes());
}
chunks
.into_remainder()
.copy_from_slice(&b12.to_be_bytes());

let from_okm = Scalar::reduce(&data);
let simple_from_okm = simple_from_okm(data);
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