| /* ==================================================================== |
| * Copyright (c) 2002-2006 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * openssl-core@openssl.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== */ |
| |
| #ifndef OPENSSL_HEADER_AES_H |
| #define OPENSSL_HEADER_AES_H |
| |
| #include <openssl/base.h> |
| |
| #if defined(__cplusplus) |
| extern "C" { |
| #endif |
| |
| |
| /* Raw AES functions. */ |
| |
| |
| #define AES_ENCRYPT 1 |
| #define AES_DECRYPT 0 |
| |
| /* AES_MAXNR is the maximum number of AES rounds. */ |
| #define AES_MAXNR 14 |
| |
| #define AES_BLOCK_SIZE 16 |
| |
| /* aes_key_st should be an opaque type, but EVP requires that the size be |
| * known. */ |
| struct aes_key_st { |
| uint32_t rd_key[4 * (AES_MAXNR + 1)]; |
| unsigned rounds; |
| }; |
| typedef struct aes_key_st AES_KEY; |
| |
| /* AES_set_encrypt_key configures |aeskey| to encrypt with the |bits|-bit key, |
| * |key|. |
| * |
| * WARNING: unlike other OpenSSL functions, this returns zero on success and a |
| * negative number on error. */ |
| OPENSSL_EXPORT int AES_set_encrypt_key(const uint8_t *key, unsigned bits, |
| AES_KEY *aeskey); |
| |
| /* AES_set_decrypt_key configures |aeskey| to decrypt with the |bits|-bit key, |
| * |key|. |
| * |
| * WARNING: unlike other OpenSSL functions, this returns zero on success and a |
| * negative number on error. */ |
| OPENSSL_EXPORT int AES_set_decrypt_key(const uint8_t *key, unsigned bits, |
| AES_KEY *aeskey); |
| |
| /* AES_encrypt encrypts a single block from |in| to |out| with |key|. The |in| |
| * and |out| pointers may overlap. */ |
| OPENSSL_EXPORT void AES_encrypt(const uint8_t *in, uint8_t *out, |
| const AES_KEY *key); |
| |
| /* AES_decrypt decrypts a single block from |in| to |out| with |key|. The |in| |
| * and |out| pointers may overlap. */ |
| OPENSSL_EXPORT void AES_decrypt(const uint8_t *in, uint8_t *out, |
| const AES_KEY *key); |
| |
| |
| /* Block cipher modes. */ |
| |
| /* AES_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode) |len| |
| * bytes from |in| to |out|. The |num| parameter must be set to zero on the |
| * first call and |ivec| will be incremented. */ |
| OPENSSL_EXPORT void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out, |
| size_t len, const AES_KEY *key, |
| uint8_t ivec[AES_BLOCK_SIZE], |
| uint8_t ecount_buf[AES_BLOCK_SIZE], |
| unsigned int *num); |
| |
| /* AES_ecb_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) a single, |
| * 16 byte block from |in| to |out|. */ |
| OPENSSL_EXPORT void AES_ecb_encrypt(const uint8_t *in, uint8_t *out, |
| const AES_KEY *key, const int enc); |
| |
| /* AES_cbc_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len| |
| * bytes from |in| to |out|. The length must be a multiple of the block size. */ |
| OPENSSL_EXPORT void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len, |
| const AES_KEY *key, uint8_t *ivec, |
| const int enc); |
| |
| /* AES_ofb128_encrypt encrypts (or decrypts, it's the same in CTR mode) |len| |
| * bytes from |in| to |out|. The |num| parameter must be set to zero on the |
| * first call. */ |
| OPENSSL_EXPORT void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out, |
| size_t len, const AES_KEY *key, |
| uint8_t *ivec, int *num); |
| |
| /* AES_cfb128_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len| |
| * bytes from |in| to |out|. The |num| parameter must be set to zero on the |
| * first call. */ |
| OPENSSL_EXPORT void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out, |
| size_t len, const AES_KEY *key, |
| uint8_t *ivec, int *num, int enc); |
| |
| |
| #if defined(__cplusplus) |
| } /* extern C */ |
| #endif |
| |
| #endif /* OPENSSL_HEADER_AES_H */ |
