Momoko-Ayase/Senbei
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build: require Rust 1.98.1

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bfloat16
2026-09-07 21:43:15 +08:00
parent 6250ca4e98
commit 53ef36c837
9 changed files with 28 additions and 39 deletions
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senbei-crypto/src/android/protector.rs
+5 -11
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@@ -552,7 +552,7 @@ pub fn transform_segment(
let mut state = seed;
let mut left = 0xe34e_ac63_u32;
let mut right = 0x07b4_8238_u32;
for (index, chunk) in transformed.chunks_exact_mut(4).enumerate() {
for (index, chunk) in transformed.as_chunks_mut::<4>().0.iter_mut().enumerate() {
let index32 = u32::try_from(index)
.map_err(|_| Error::Invalid("segment word index exceeds u32".to_owned()))?;
left = state
@@ -564,10 +564,7 @@ pub fn transform_segment(
.wrapping_add(right.wrapping_sub(0x1605_a81c).wrapping_mul(right))
.wrapping_shl(index32 & 7);
state = left ^ right;
let bytes: [u8; 4] = chunk
.try_into()
.map_err(|_| Error::Invalid("invalid transformed word".to_owned()))?;
let mut value = u32::from_le_bytes(bytes);
let mut value = u32::from_le_bytes(*chunk);
value = value.wrapping_add(0xb43b_9baf_u32.wrapping_mul(index32 & 0x0d));
value ^= 0xaf57_f7fb_u32.wrapping_mul(index32 & 3);
value = value.wrapping_sub(state) ^ state;
@@ -577,13 +574,10 @@ pub fn transform_segment(
if decrypt_aes {
let cipher = Aes256::new_from_slice(aes_key)
.map_err(|_| Error::Invalid("invalid AES-256 key length".to_owned()))?;
let aligned_size = transformed.len() & !0x0f;
let mut previous = [0_u8; 16];
for chunk in transformed[..aligned_size].chunks_exact_mut(16) {
let mut ciphertext = [0_u8; 16];
ciphertext.copy_from_slice(chunk);
// chunk is exactly one block (chunks_exact_mut(16)).
cipher.decrypt_block(chunk.try_into().expect("chunk is one block"));
for chunk in transformed.as_chunks_mut::<16>().0 {
let ciphertext = *chunk;
cipher.decrypt_block((&mut *chunk).into());
for (byte, prior) in chunk.iter_mut().zip(previous) {
*byte ^= prior;
}