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https://github.com/cryb-to/cryb-to.git
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c2f4fa524f
We now have separate encryption and decryption methods, and can process an arbitrary amount of plaintext or ciphertext per call, rounded down to the block size (if applicable). For stream ciphers, we also have a keystream method which fills the provided buffer with an arbitrary amount of keystream (once again, rounded down if applicable).
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/*-
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* Copyright (c) 2015-2016 Dag-Erling Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef CRYB_AES_H_INCLUDED
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#define CRYB_AES_H_INCLUDED
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#ifndef CRYB_TO
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#include <cryb/to.h>
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#endif
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#include <cryb/cipher.h>
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CRYB_BEGIN
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#define AES_BLOCK_LEN 16
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#define aes_cipher cryb_aes_cipher
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#define aes_ctx cryb_aes_ctx
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#define aes_init cryb_aes_init
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#define aes_keystream cryb_aes_keystream
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#define aes_encrypt cryb_aes_encrypt
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#define aes_decrypt cryb_aes_decrypt
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#define aes_finish cryb_aes_finish
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extern cipher_algorithm aes128_cipher;
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extern cipher_algorithm aes192_cipher;
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extern cipher_algorithm aes256_cipher;
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typedef struct {
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int mode;
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int nr;
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uint32_t rk[68];
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} aes_ctx;
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void aes_init(aes_ctx *, cipher_mode mode, const uint8_t *, size_t);
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size_t aes_keystream(aes_ctx *, uint8_t *, size_t);
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size_t aes_encrypt(aes_ctx *, const void *, uint8_t *, size_t);
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size_t aes_decrypt(aes_ctx *, const uint8_t *, void *, size_t);
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void aes_finish(aes_ctx *);
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CRYB_END
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#endif
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