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feat: add more shifting capabilities for gfmul

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0xalivecow 2024-10-29 14:50:55 +01:00
parent f4c49a9137
commit ccf0b03ec0
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2 changed files with 57 additions and 17 deletions
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10
src/utils/poly.rs
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@ -19,21 +19,21 @@ pub fn gfmul(poly_a: Vec<u8>, poly_b: Vec<u8>, semantic: &str) -> Result<Vec<u8>
if poly2.LSB_is_one() {
result.xor_byte_arrays(&poly1);
poly2.right_shift(semantic);
poly2.right_shift(semantic)?;
} else {
poly2.right_shift(semantic);
poly2.right_shift(semantic)?;
}
while !poly2.is_empty() {
if poly2.LSB_is_one() {
poly1.left_shift();
poly1.left_shift(semantic)?;
poly1.xor_byte_arrays(&red_poly_bytes);
result.xor_byte_arrays(&poly1);
} else {
poly1.left_shift();
poly1.left_shift(semantic)?;
poly1.xor_byte_arrays(&red_poly_bytes);
}
poly2.right_shift(semantic);
poly2.right_shift(semantic)?;
}
result.0.remove(16);