91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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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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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 *key, const uint8_t *raw_key, size_t raw_key_len);
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int aes_set_decrypt_key(AES_KEY *key, const uint8_t *raw_key, size_t raw_key_len);
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void aes_encrypt(const AES_KEY *key, const uint8_t in[AES_BLOCK_SIZE], uint8_t out[AES_BLOCK_SIZE]);
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void aes_decrypt(const AES_KEY *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[AES_BLOCK_SIZE],
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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[AES_BLOCK_SIZE],
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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[AES_BLOCK_SIZE],
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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[AES_BLOCK_SIZE],
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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[AES_BLOCK_SIZE],
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const uint8_t *in, size_t inlen, uint8_t *out);
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#define aes_ctr_decrypt(key,ctr,in,inlen,out) aes_ctr_encrypt(key,ctr,in,inlen,out)
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#define AES_GCM_IV_MIN_SIZE 1
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#define AES_GCM_IV_MAX_SIZE ((uint64_t)(1 << (64-3)))
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#define AES_GCM_IV_DEFAULT_BITS 96
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#define AES_GCM_IV_DEFAULT_SIZE 12
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#define AES_GCM_MIN_AAD_SIZE 0
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#define AES_GCM_MAX_AAD_SIZE ((uint64_t)(1 << (64-3)))
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#define AES_GCM_MIN_PLAINTEXT_SIZE 0
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#define AES_GCM_MAX_PLAINTEXT_SIZE ((((uint64_t)1 << 39) - 256) >> 3)
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#define AES_GCM_MAX_TAG_SIZE 16
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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, 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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