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Using multi-pop in sha256 impl. #5590

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May 22, 2024
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Using multi-pop in sha256 impl. #5590

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9 changes: 3 additions & 6 deletions corelib/src/sha256.cairo
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Original file line number Diff line number Diff line change
Expand Up @@ -28,14 +28,11 @@ pub fn compute_sha256_u32_array(
; 8] {
add_sha256_padding(ref input, last_input_word, last_input_num_bytes);

let arr = input.span();
let mut input = input.span();
let mut state = sha256_state_handle_init(BoxTrait::new(SHA256_INITIAL_STATE));
let mut ind = 0;

while ind != arr.len() {
let input: Box<[u32; 16]> = *arr.slice(ind, 16).try_into().unwrap();
state = starknet::syscalls::sha256_process_block_syscall(state, input).unwrap_syscall();
ind = ind + 16;
while let Option::Some(chunk) = input.multi_pop_front() {
state = starknet::syscalls::sha256_process_block_syscall(state, *chunk).unwrap_syscall();
};

sha256_state_handle_digest(state).unbox()
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