chromium/third_party/libsrtp/crypto/kernel/crypto_kernel.c

/*
 * crypto_kernel.c
 *
 * header for the cryptographic kernel
 *
 * David A. McGrew
 * Cisco Systems, Inc.
 */
/*
 *
 * Copyright(c) 2001-2017 Cisco Systems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 *   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.
 *
 *   Neither the name of the Cisco Systems, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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
 * COPYRIGHT HOLDERS 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.
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "alloc.h"

#include "crypto_kernel.h"
#include "cipher_types.h"

/* the debug module for the crypto_kernel */

srtp_debug_module_t srtp_mod_crypto_kernel = …;

/* crypto_kernel is a global variable, the only one of its datatype */

srtp_crypto_kernel_t crypto_kernel = …;

#define MAX_RNG_TRIALS …

srtp_err_status_t srtp_crypto_kernel_init()
{ … }

srtp_err_status_t srtp_crypto_kernel_status()
{ … }

srtp_err_status_t srtp_crypto_kernel_list_debug_modules()
{ … }

srtp_err_status_t srtp_crypto_kernel_shutdown()
{ … }

static inline srtp_err_status_t srtp_crypto_kernel_do_load_cipher_type(
    const srtp_cipher_type_t *new_ct,
    srtp_cipher_type_id_t id,
    int replace)
{ … }

srtp_err_status_t srtp_crypto_kernel_load_cipher_type(
    const srtp_cipher_type_t *new_ct,
    srtp_cipher_type_id_t id)
{ … }

srtp_err_status_t srtp_replace_cipher_type(const srtp_cipher_type_t *new_ct,
                                           srtp_cipher_type_id_t id)
{ … }

srtp_err_status_t srtp_crypto_kernel_do_load_auth_type(
    const srtp_auth_type_t *new_at,
    srtp_auth_type_id_t id,
    int replace)
{ … }

srtp_err_status_t srtp_crypto_kernel_load_auth_type(
    const srtp_auth_type_t *new_at,
    srtp_auth_type_id_t id)
{ … }

srtp_err_status_t srtp_replace_auth_type(const srtp_auth_type_t *new_at,
                                         srtp_auth_type_id_t id)
{ … }

const srtp_cipher_type_t *srtp_crypto_kernel_get_cipher_type(
    srtp_cipher_type_id_t id)
{ … }

srtp_err_status_t srtp_crypto_kernel_alloc_cipher(srtp_cipher_type_id_t id,
                                                  srtp_cipher_pointer_t *cp,
                                                  int key_len,
                                                  int tag_len)
{ … }

const srtp_auth_type_t *srtp_crypto_kernel_get_auth_type(srtp_auth_type_id_t id)
{ … }

srtp_err_status_t srtp_crypto_kernel_alloc_auth(srtp_auth_type_id_t id,
                                                srtp_auth_pointer_t *ap,
                                                int key_len,
                                                int tag_len)
{ … }

srtp_err_status_t srtp_crypto_kernel_load_debug_module(
    srtp_debug_module_t *new_dm)
{ … }

srtp_err_status_t srtp_crypto_kernel_set_debug_module(const char *name, int on)
{ … }