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Diffstat (limited to 'third_party/boringssl/include/aes.h')
| -rw-r--r-- | third_party/boringssl/include/aes.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/third_party/boringssl/include/aes.h b/third_party/boringssl/include/aes.h new file mode 100644 index 0000000000..115658542f --- /dev/null +++ b/third_party/boringssl/include/aes.h @@ -0,0 +1,170 @@ +/* ==================================================================== + * 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 |