130 lines
5.8 KiB
C
130 lines
5.8 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* 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 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 acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS 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 AUTHOR OR 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.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.] */
|
|
|
|
#ifndef OPENSSL_HEADER_CIPHER_INTERNAL_H
|
|
#define OPENSSL_HEADER_CIPHER_INTERNAL_H
|
|
|
|
#include <openssl/base.h>
|
|
|
|
#include <openssl/aead.h>
|
|
#include <openssl/aes.h>
|
|
|
|
#include "../../internal.h"
|
|
#include "../modes/internal.h"
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
// EVP_CIPH_MODE_MASK contains the bits of |flags| that represent the mode.
|
|
#define EVP_CIPH_MODE_MASK 0x3f
|
|
|
|
// EVP_AEAD represents a specific AEAD algorithm.
|
|
struct evp_aead_st {
|
|
uint8_t key_len;
|
|
uint8_t nonce_len;
|
|
uint8_t overhead;
|
|
uint8_t max_tag_len;
|
|
int seal_scatter_supports_extra_in;
|
|
|
|
// init initialises an |EVP_AEAD_CTX|. If this call returns zero then
|
|
// |cleanup| will not be called for that context.
|
|
int (*init)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
|
|
size_t tag_len);
|
|
int (*init_with_direction)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
|
|
size_t tag_len, enum evp_aead_direction_t dir);
|
|
void (*cleanup)(EVP_AEAD_CTX *);
|
|
|
|
int (*open)(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
|
|
size_t max_out_len, const uint8_t *nonce, size_t nonce_len,
|
|
const uint8_t *in, size_t in_len, const uint8_t *ad,
|
|
size_t ad_len);
|
|
|
|
int (*seal_scatter)(const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
|
|
size_t *out_tag_len, size_t max_out_tag_len,
|
|
const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
|
|
size_t in_len, const uint8_t *extra_in,
|
|
size_t extra_in_len, const uint8_t *ad, size_t ad_len);
|
|
|
|
int (*open_gather)(const EVP_AEAD_CTX *ctx, uint8_t *out,
|
|
const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
|
|
size_t in_len, const uint8_t *in_tag, size_t in_tag_len,
|
|
const uint8_t *ad, size_t ad_len);
|
|
|
|
int (*get_iv)(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
|
|
size_t *out_len);
|
|
|
|
size_t (*tag_len)(const EVP_AEAD_CTX *ctx, size_t in_Len,
|
|
size_t extra_in_len);
|
|
};
|
|
|
|
// aes_ctr_set_key initialises |*aes_key| using |key_bytes| bytes from |key|,
|
|
// where |key_bytes| must either be 16, 24 or 32. If not NULL, |*out_block| is
|
|
// set to a function that encrypts single blocks. If not NULL, |*gcm_ctx| is
|
|
// initialised to do GHASH with the given key. It returns a function for
|
|
// optimised CTR-mode, or NULL if CTR-mode should be built using
|
|
// |*out_block|.
|
|
ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_CONTEXT *gcm_ctx,
|
|
block128_f *out_block, const uint8_t *key,
|
|
size_t key_bytes);
|
|
|
|
#if defined(__cplusplus)
|
|
} // extern C
|
|
#endif
|
|
|
|
#endif // OPENSSL_HEADER_CIPHER_INTERNAL_H
|