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Upgrade libsrtp from 2.0.0 to 2.3.0, with source code. 4.0.79
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111 changed files with 45307 additions and 5 deletions
187
trunk/3rdparty/libsrtp-2-fit/crypto/hash/auth.c
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187
trunk/3rdparty/libsrtp-2-fit/crypto/hash/auth.c
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/*
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* auth.c
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*
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* some bookkeeping functions for authentication functions
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*
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* David A. McGrew
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* Cisco Systems, Inc.
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*/
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/*
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*
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* Copyright (c) 2001-2017, Cisco Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* Neither the name of the Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "auth.h"
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#include "err.h" /* for srtp_debug */
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#include "datatypes.h" /* for octet_string */
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/* the debug module for authentiation */
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srtp_debug_module_t srtp_mod_auth = {
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0, /* debugging is off by default */
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"auth func" /* printable name for module */
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};
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int srtp_auth_get_key_length(const srtp_auth_t *a)
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{
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return a->key_len;
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}
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int srtp_auth_get_tag_length(const srtp_auth_t *a)
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{
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return a->out_len;
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}
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int srtp_auth_get_prefix_length(const srtp_auth_t *a)
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{
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return a->prefix_len;
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}
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/*
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* srtp_auth_type_test() tests an auth function of type ct against
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* test cases provided in a list test_data of values of key, data, and tag
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* that is known to be good
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*/
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/* should be big enough for most occasions */
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#define SELF_TEST_TAG_BUF_OCTETS 32
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srtp_err_status_t srtp_auth_type_test(const srtp_auth_type_t *at,
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const srtp_auth_test_case_t *test_data)
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{
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const srtp_auth_test_case_t *test_case = test_data;
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srtp_auth_t *a;
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srtp_err_status_t status;
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uint8_t tag[SELF_TEST_TAG_BUF_OCTETS];
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int i, case_num = 0;
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debug_print(srtp_mod_auth, "running self-test for auth function %s",
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at->description);
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/*
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* check to make sure that we have at least one test case, and
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* return an error if we don't - we need to be paranoid here
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*/
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if (test_case == NULL) {
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return srtp_err_status_cant_check;
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}
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/* loop over all test cases */
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while (test_case != NULL) {
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/* check test case parameters */
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if (test_case->tag_length_octets > SELF_TEST_TAG_BUF_OCTETS) {
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return srtp_err_status_bad_param;
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}
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/* allocate auth */
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status = srtp_auth_type_alloc(at, &a, test_case->key_length_octets,
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test_case->tag_length_octets);
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if (status) {
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return status;
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}
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/* initialize auth */
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status = srtp_auth_init(a, test_case->key);
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if (status) {
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srtp_auth_dealloc(a);
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return status;
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}
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/* zeroize tag then compute */
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octet_string_set_to_zero(tag, test_case->tag_length_octets);
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status = srtp_auth_compute(a, test_case->data,
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test_case->data_length_octets, tag);
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if (status) {
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srtp_auth_dealloc(a);
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return status;
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}
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debug_print(srtp_mod_auth, "key: %s",
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srtp_octet_string_hex_string(test_case->key,
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test_case->key_length_octets));
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debug_print(srtp_mod_auth, "data: %s",
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srtp_octet_string_hex_string(
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test_case->data, test_case->data_length_octets));
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debug_print(
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srtp_mod_auth, "tag computed: %s",
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srtp_octet_string_hex_string(tag, test_case->tag_length_octets));
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debug_print(srtp_mod_auth, "tag expected: %s",
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srtp_octet_string_hex_string(test_case->tag,
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test_case->tag_length_octets));
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/* check the result */
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status = srtp_err_status_ok;
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for (i = 0; i < test_case->tag_length_octets; i++) {
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if (tag[i] != test_case->tag[i]) {
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status = srtp_err_status_algo_fail;
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debug_print(srtp_mod_auth, "test case %d failed", case_num);
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debug_print(srtp_mod_auth, " (mismatch at octet %d)", i);
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}
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}
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if (status) {
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srtp_auth_dealloc(a);
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return srtp_err_status_algo_fail;
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}
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/* deallocate the auth function */
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status = srtp_auth_dealloc(a);
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if (status) {
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return status;
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}
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/*
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* the auth function passed the test case, so move on to the next test
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* case in the list; if NULL, we'll quit and return an OK
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*/
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test_case = test_case->next_test_case;
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++case_num;
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}
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return srtp_err_status_ok;
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}
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/*
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* srtp_auth_type_self_test(at) performs srtp_auth_type_test on at's internal
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* list of test data.
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*/
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srtp_err_status_t srtp_auth_type_self_test(const srtp_auth_type_t *at)
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{
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return srtp_auth_type_test(at, at->test_data);
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}
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