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- /* ====================================================================
- * 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 OFB 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);
-
-
- // AES key wrap.
- //
- // These functions implement AES Key Wrap mode, as defined in RFC 3394. They
- // should never be used except to interoperate with existing systems that use
- // this mode.
-
- // AES_wrap_key performs AES key wrap on |in| which must be a multiple of 8
- // bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
- // |key| must have been configured for encryption. On success, it writes
- // |in_len| + 8 bytes to |out| and returns |in_len| + 8. Otherwise, it returns
- // -1.
- OPENSSL_EXPORT int AES_wrap_key(const AES_KEY *key, const uint8_t *iv,
- uint8_t *out, const uint8_t *in, size_t in_len);
-
- // AES_unwrap_key performs AES key unwrap on |in| which must be a multiple of 8
- // bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
- // |key| must have been configured for decryption. On success, it writes
- // |in_len| - 8 bytes to |out| and returns |in_len| - 8. Otherwise, it returns
- // -1.
- OPENSSL_EXPORT int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv,
- uint8_t *out, const uint8_t *in,
- size_t in_len);
-
-
- #if defined(__cplusplus)
- } // extern C
- #endif
-
- #endif // OPENSSL_HEADER_AES_H
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