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53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
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* Copyright 2014-2024 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_GCM_H
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#define GMSSL_GCM_H
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <gmssl/ghash.h>
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#include <gmssl/block_cipher.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define GCM_IV_MIN_SIZE 1
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#define GCM_IV_MAX_SIZE ((uint64_t)(1 << (64-3)))
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#define GCM_IV_DEFAULT_BITS 96
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#define GCM_IV_DEFAULT_SIZE 12
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#define GCM_MIN_AAD_SIZE 0
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#define GCM_MAX_AAD_SIZE ((uint64_t)(1 << (64-3)))
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#define GCM_MIN_PLAINTEXT_SIZE 0
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#define GCM_MAX_PLAINTEXT_SIZE ((((uint64_t)1 << 39) - 256) >> 3)
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#define GCM_IS_LITTLE_ENDIAN 1
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int gcm_encrypt(const BLOCK_CIPHER_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 gcm_decrypt(const BLOCK_CIPHER_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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