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