58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "shared-bindings/hashlib/Hash.h"
|
|
|
|
#include "mbedtls/ssl.h"
|
|
|
|
void common_hal_hashlib_hash_update(hashlib_hash_obj_t *self, const uint8_t *data, size_t datalen) {
|
|
if (self->hash_type == MBEDTLS_SSL_HASH_SHA1) {
|
|
mbedtls_sha1_update_ret(&self->sha1, data, datalen);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void common_hal_hashlib_hash_digest(hashlib_hash_obj_t *self, uint8_t *data, size_t datalen) {
|
|
if (datalen < common_hal_hashlib_hash_get_digest_size(self)) {
|
|
return;
|
|
}
|
|
if (self->hash_type == MBEDTLS_SSL_HASH_SHA1) {
|
|
// We copy the sha1 state so we can continue to update if needed or get
|
|
// the digest a second time.
|
|
mbedtls_sha1_context copy;
|
|
mbedtls_sha1_clone(©, &self->sha1);
|
|
mbedtls_sha1_finish_ret(&self->sha1, data);
|
|
mbedtls_sha1_clone(&self->sha1, ©);
|
|
}
|
|
}
|
|
|
|
size_t common_hal_hashlib_hash_get_digest_size(hashlib_hash_obj_t *self) {
|
|
if (self->hash_type == MBEDTLS_SSL_HASH_SHA1) {
|
|
return 20;
|
|
}
|
|
return 0;
|
|
}
|