/* ==================================================================== * 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 #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); /* Android compatibility section. * * These functions are declared, temporarily, for Android because * wpa_supplicant will take a little time to sync with upstream. Outside of * Android they'll have no definition. */ OPENSSL_EXPORT int AES_wrap_key(AES_KEY *key, const uint8_t *iv, uint8_t *out, const uint8_t *in, size_t in_len); OPENSSL_EXPORT int AES_unwrap_key(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 */