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fix(core): fix sha256 calculation with hash processor

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This commit is contained in:
tychovrahe 2024-04-16 14:26:15 +02:00 committed by matejcik
parent e9f6eb0b2b
commit 457e5956c8
1 changed files with 6 additions and 11 deletions
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17
core/embed/trezorhal/stm32u5/hash_processor.c
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@ -117,16 +117,11 @@ void hash_processor_sha256_update(hash_sha265_context_t *ctx,
void hash_processor_sha256_final(hash_sha265_context_t *ctx, uint8_t *output) {
uint32_t tmp_out[SHA256_DIGEST_LENGTH / sizeof(uint32_t)] = {0};
if (ctx->length > 0) {
memzero(ctx->buffer + ctx->length, HASH_SHA256_BUFFER_SIZE - ctx->length);
HAL_HASHEx_SHA256_Accmlt_End(&hhash, (uint8_t *)ctx->buffer, ctx->length,
(uint8_t *)tmp_out, 1000);
ctx->length = 0;
memzero(ctx->buffer, HASH_SHA256_BUFFER_SIZE);
} else {
HASH->STR |= HASH_STR_DCAL;
HAL_HASHEx_SHA256_Finish(&hhash, (uint8_t *)tmp_out, 1000);
}
memzero(ctx->buffer + ctx->length, HASH_SHA256_BUFFER_SIZE - ctx->length);
HAL_HASHEx_SHA256_Accmlt_End(&hhash, (uint8_t *)ctx->buffer, ctx->length,
(uint8_t *)tmp_out, 1000);
ctx->length = 0;
memzero(ctx->buffer, HASH_SHA256_BUFFER_SIZE);
memcpy(output, tmp_out, SHA256_DIGEST_LENGTH);
memzero(tmp_out, sizeof(tmp_out));
}