ishan/sha256
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fixed some bugs

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This commit is contained in:
Ishan Jain 2022-04-03 09:25:33 +05:30
parent c36e7d669f
commit 554e87bea0
1 changed files with 12 additions and 6 deletions
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18
src/main.rs
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@ -60,10 +60,13 @@ impl Sha256 {
fn update<R: Read>(&mut self, r: &mut R) -> Result<usize, std::io::Error> {
let read = r.read(&mut self.buffer[..64])?;
self.block_read = read;
self.message_length += read;
if read < 64 {
return Ok(read);
}
self.compress();
Ok(read)
@ -73,9 +76,13 @@ impl Sha256 {
if self.block_read != 64 {
self.pad();
}
self.compress();
if self.block_read % 64 >= 56 {
self.buffer.rotate_left(64);
self.compress();
}
self.state
}
@ -93,8 +100,7 @@ impl Sha256 {
let message_length = (8 * self.message_length).to_be_bytes();
self.buffer[self.block_read + zero_bytes + 1..self.block_read + zero_bytes + 1 + 8]
.copy_from_slice(&message_length);
self.buffer[self.block_read + zero_bytes + 1..][..8].copy_from_slice(&message_length);
}
fn compress(&mut self) {
@ -118,7 +124,7 @@ impl Sha256 {
fn message_schedule(&mut self) -> [u32; 64] {
let mut block = [0u32; 64];
for (i, buf) in self.buffer.chunks(4).enumerate() {
for (i, buf) in self.buffer.chunks(4).enumerate().take(16) {
block[i] = u32::from_be_bytes([buf[0], buf[1], buf[2], buf[3]])
}
@ -248,7 +254,7 @@ fn sha256_test() {
assert_eq!(expected_message, s256.message_schedule());
let expected_compression = [
let expected_compression: [u32; 8] = [
3820012610, 2566659092, 2600203464, 2574235940, 665731556, 1687917388, 2761267483,
2018687061,
];