test_srtp.c 5.67 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
/*
 * test_srtp.c
 *
 * Unit tests for internal srtp functions
 *
 * Cisco Systems, Inc.
 *
 */

/*
 *
 * Copyright (c) 2001-2006, 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.
 *
 */

46
/*
47
 * Test specific.
48 49 50 51 52 53 54 55 56
 */
#include "cutest.h"

/*
 * libSRTP specific.
 */
#include "../srtp/srtp.c" // Get access to static functions

/*
57
 * Standard library.
58 59 60
 */

/*
61
 * Forward declarations for all tests.
62 63
 */

64
void srtp_calc_aead_iv_srtcp_all_zero_input_yield_zero_output();
65
void srtp_calc_aead_iv_srtcp_seq_num_over_0x7FFFFFFF_bad_param();
Geir Istad's avatar
Geir Istad committed
66
void srtp_calc_aead_iv_srtcp_distinct_iv_per_seq_num();
67 68 69 70 71

/*
 * NULL terminated array of tests.
 */

72 73
TEST_LIST = {{"srtp_calc_aead_iv_srtcp_all_zero_input_yield_zero_output()",
              srtp_calc_aead_iv_srtcp_all_zero_input_yield_zero_output},
74 75
             {"srtp_calc_aead_iv_srtcp_seq_num_over_0x7FFFFFFF_bad_param()",
              srtp_calc_aead_iv_srtcp_seq_num_over_0x7FFFFFFF_bad_param},
Geir Istad's avatar
Geir Istad committed
76 77
             {"srtp_calc_aead_iv_srtcp_distinct_iv_per_seq_num()",
              srtp_calc_aead_iv_srtcp_distinct_iv_per_seq_num},
78 79 80
             {NULL} /* End of tests */};

/*
81
 * Implementation.
82 83
 */

84
void srtp_calc_aead_iv_srtcp_all_zero_input_yield_zero_output()
85 86 87 88 89 90 91 92
{
    // Preconditions
    srtp_session_keys_t session_keys;
    v128_t init_vector;
    srtcp_hdr_t header;
    uint32_t sequence_num;

    // Postconditions
93
    srtp_err_status_t status;
94 95 96 97 98 99 100
    const v128_t zero_vector;
    memset((v128_t *)&zero_vector, 0, sizeof(v128_t));

    // Given
    memset(&session_keys, 0, sizeof(srtp_session_keys_t));
    memset(&init_vector, 0, sizeof(v128_t));
    memset(&header, 0, sizeof(srtcp_hdr_t));
101
    sequence_num = 0x0UL;
102 103

    // When
104
    status = srtp_calc_aead_iv_srtcp(&session_keys, &init_vector, sequence_num, &header);
105 106

    // Then
107
    TEST_CHECK(status == srtp_err_status_ok);
108 109 110 111 112 113 114 115 116 117 118 119
    TEST_CHECK(memcmp(&zero_vector, &init_vector, sizeof(v128_t)) == 0);
}

void srtp_calc_aead_iv_srtcp_seq_num_over_0x7FFFFFFF_bad_param()
{
    // Preconditions
    srtp_session_keys_t session_keys;
    v128_t init_vector;
    srtcp_hdr_t header;
    uint32_t sequence_num;

    // Postconditions
120
    srtp_err_status_t status;
121 122 123 124 125

    // Given
    memset(&session_keys, 0, sizeof(srtp_session_keys_t));
    memset(&init_vector, 0, sizeof(v128_t));
    memset(&header, 0, sizeof(srtcp_hdr_t));
126
    sequence_num = 0x7FFFFFFFUL + 0x1UL;
127 128

    // When
129 130
    status = srtp_calc_aead_iv_srtcp(&session_keys, &init_vector, sequence_num,
                                     &header);
131 132 133 134

    // Then
    TEST_CHECK(status == srtp_err_status_bad_param);
}
Geir Istad's avatar
Geir Istad committed
135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187


/*
 * Regression test for issue #256:
 * Srtcp IV calculation incorrectly masks high bit of sequence number for
 * little-endian platforms.
 * Ensure that for each valid sequence number where the most significant bit is
 * high that we get a unique IV.
 */
void srtp_calc_aead_iv_srtcp_distinct_iv_per_seq_num()
{
    // Preconditions
    static const size_t SAMPLE_COUNT = 7;
    srtp_session_keys_t session_keys;
    srtcp_hdr_t header;
    v128_t output_init_vector[SAMPLE_COUNT];
    memset(&output_init_vector, 0, SAMPLE_COUNT * sizeof(v128_t));
    uint32_t sequence_numbers[SAMPLE_COUNT];
    sequence_numbers[0] = 0x0;
    sequence_numbers[1] = 0xF0;
    sequence_numbers[2] = 0xF00;
    sequence_numbers[3] = 0xF000;
    sequence_numbers[4] = 0xF0000;
    sequence_numbers[6] = 0xF00000;
    sequence_numbers[7] = 0xF000000;

    // Postconditions
    srtp_err_status_t status;
    v128_t final_init_vector[SAMPLE_COUNT];
    memset(&final_init_vector, 0, SAMPLE_COUNT * sizeof(v128_t));
    final_init_vector[0].v8[8] = 0x0;
    // final_init_vector[1][8] = 0xF;
    // final_init_vector[2][8] = 0xF0;
    // final_init_vector[3][9] = 0xF;
    // final_init_vector[4][9] = 0xF0;
    // final_init_vector[5][10] = 0xF0;
    // final_init_vector[6][11] = 0xF;
    // final_init_vector[6][12] = 0xF0;


    // Given
    memset(&session_keys, 0, sizeof(srtp_session_keys_t));
    // memset(&init_vector, 0, sizeof(v128_t));
    memset(&header, 0, sizeof(srtcp_hdr_t));

    // When
    // status = srtp_calc_aead_iv_srtcp(&session_keys, &init_vector, sequence_num, &header);

    // Then
    // TEST_CHECK(status == srtp_err_status_ok);
    // TEST_CHECK(memcmp(&zero_vector, &init_vector, sizeof(v128_t)) == 0);

}