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https://github.com/guanzhi/GmSSL.git
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83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
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* Copyright 2014-2021 The GmSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef GMSSL_AES_H
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#define GMSSL_AES_H
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#include <stdint.h>
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#include <stdlib.h>
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#define AES128_KEY_BITS 128
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#define AES192_KEY_BITS 192
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#define AES256_KEY_BITS 256
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#define AES128_KEY_SIZE (AES128_KEY_BITS/8)
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#define AES192_KEY_SIZE (AES192_KEY_BITS/8)
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#define AES256_KEY_SIZE (AES256_KEY_BITS/8)
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#define AES_BLOCK_SIZE 16
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#define AES128_ROUNDS 10
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#define AES192_ROUNDS 12
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#define AES256_ROUNDS 14
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#define AES_MAX_ROUNDS AES256_ROUNDS
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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uint32_t rk[4 * (AES_MAX_ROUNDS + 1)];
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size_t rounds;
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} AES_KEY;
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int aes_set_encrypt_key(AES_KEY *aes_key, const uint8_t *key, size_t keylen);
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int aes_set_decrypt_key(AES_KEY *aes_key, const uint8_t *key, size_t keylen);
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void aes_encrypt(const AES_KEY *aes_key, const uint8_t in[AES_BLOCK_SIZE], uint8_t out[AES_BLOCK_SIZE]);
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void aes_decrypt(const AES_KEY *aes_key, const uint8_t in[AES_BLOCK_SIZE], uint8_t out[AES_BLOCK_SIZE]);
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void aes_cbc_encrypt(const AES_KEY *key, const uint8_t iv[16], const uint8_t *in, size_t nblocks, uint8_t *out);
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void aes_cbc_decrypt(const AES_KEY *key, const uint8_t iv[16], const uint8_t *in, size_t nblocks, uint8_t *out);
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int aes_cbc_padding_encrypt(const AES_KEY *key, const uint8_t iv[16],
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const uint8_t *in, size_t inlen,
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uint8_t *out, size_t *outlen);
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int aes_cbc_padding_decrypt(const AES_KEY *key, const uint8_t iv[16],
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const uint8_t *in, size_t inlen,
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uint8_t *out, size_t *outlen);
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void aes_ctr_encrypt(const AES_KEY *key, uint8_t ctr[16],
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const uint8_t *in, size_t inlen, uint8_t *out);
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int aes_gcm_encrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
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const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen,
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uint8_t *out, const size_t taglen, uint8_t *tag);
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int aes_gcm_decrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
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const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen,
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const uint8_t *tag, size_t taglen, uint8_t *out);
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#ifdef __cplusplus
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}
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#endif
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#endif
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