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8ca3597646
This indicates integer counter mode being used and helps disambiguate additional crypto suites in the future. Renamed CALLS_SRTP_SUITE_AES_128_SHA1_80 → CALLS_SRTP_SUITE_AES_128_ICM_SHA1_80 and CALLS_SRTP_SUITE_AES_128_SHA1_32 → CALLS_SRTP_SUITE_AES_128_ICM_SHA1_32
484 lines
19 KiB
C
484 lines
19 KiB
C
/*
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* Copyright (C) 2022 Purism SPC
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*
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* SPDX-License-Identifier: GPL-3.0+
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*
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* Author: Evangelos Ribeiro Tzaras <evangelos.tzaras@puri.sm>
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*/
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#include "calls-srtp-utils.h"
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#include <glib.h>
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static void
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assert_attr_eq (calls_srtp_crypto_attribute *a,
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calls_srtp_crypto_attribute *b)
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{
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g_assert_cmpint (a->tag, ==, b->tag);
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g_assert_cmpint (a->crypto_suite, ==, b->crypto_suite);
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g_assert_cmpuint (a->n_key_params, ==, b->n_key_params);
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for (guint i = 0; i < a->n_key_params; i++) {
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g_assert_cmpstr (a->key_params[i].b64_keysalt, ==,
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b->key_params[i].b64_keysalt);
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g_assert_cmpuint (a->key_params[i].mki, ==,
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b->key_params[i].mki);
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g_assert_cmpuint (a->key_params[i].mki_length, ==,
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b->key_params[i].mki_length);
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}
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g_assert_cmpint (a->unencrypted_srtp, ==, b->unencrypted_srtp);
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g_assert_cmpint (a->unauthenticated_srtp, ==, b->unauthenticated_srtp);
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g_assert_cmpint (a->unencrypted_srtcp, ==, b->unencrypted_srtcp);
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g_assert_cmpint (a->kdr, ==, b->kdr);
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g_assert_cmpint (a->fec_order, ==, b->fec_order);
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g_assert_cmpint (a->window_size_hint, ==, b->window_size_hint);
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}
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static void
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test_crypto_attribute_validity (void)
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{
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g_autoptr (calls_srtp_crypto_attribute) attr = NULL;
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char *attr_str;
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guchar *key_salt;
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char *tmp_str;
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/* single key parameter */
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attr = calls_srtp_crypto_attribute_new (1);
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attr->tag = 1;
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attr->crypto_suite = CALLS_SRTP_SUITE_UNKNOWN;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_32;
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key_salt = calls_srtp_generate_key_salt (30);
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attr->key_params[0].b64_keysalt = g_base64_encode (key_salt, 30);
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g_free (key_salt);
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attr_str = calls_srtp_print_sdp_crypto_attribute (attr, NULL);
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g_assert_true (attr_str);
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g_free (attr_str);
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/* tag out of bounds */
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attr->tag = 0;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->tag = 1000000000;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->tag = 1;
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/* lifetime out of bounds */
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attr->key_params[0].lifetime = 49;
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attr->key_params[0].lifetime_type = CALLS_SRTP_LIFETIME_AS_POWER_OF_TWO;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->key_params[0].lifetime = 1ULL << 48;
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attr->key_params[0].lifetime_type = CALLS_SRTP_LIFETIME_AS_DECIMAL_NUMBER;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->key_params[0].lifetime = 0;
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attr->key_params[0].lifetime_type = CALLS_SRTP_LIFETIME_UNSET;
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/* MKI without length */
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attr->key_params[0].mki = 1;
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attr->key_params[0].mki_length = 0;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->key_params[0].mki_length = 129;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->key_params[0].mki = 0;
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attr->key_params[0].mki_length = 4;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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/* missing key */
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attr->key_params[0].mki_length = 0;
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g_clear_pointer (&attr->key_params[0].b64_keysalt, g_free);
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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/* wrong key length */
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key_salt = calls_srtp_generate_key_salt (29);
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attr->key_params[0].b64_keysalt = g_base64_encode (key_salt, 29);
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g_free (key_salt);
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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calls_srtp_crypto_attribute_free (attr);
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/* multiple key parameters */
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attr = calls_srtp_crypto_attribute_new (4);
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attr->tag = 12;
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_80;
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calls_srtp_crypto_attribute_init_keys (attr);
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attr->key_params[0].lifetime = 31;
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attr->key_params[0].lifetime_type = CALLS_SRTP_LIFETIME_AS_POWER_OF_TWO;
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attr_str = calls_srtp_print_sdp_crypto_attribute (attr, NULL);
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g_assert_true (attr_str);
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g_free (attr_str);
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calls_srtp_crypto_attribute_free (attr);
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/* same key */
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attr = calls_srtp_crypto_attribute_new (2);
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attr->tag = 1;
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tmp_str = attr->key_params[1].b64_keysalt;
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attr->key_params[1].b64_keysalt = attr->key_params[0].b64_keysalt;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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attr->key_params[1].b64_keysalt = tmp_str;
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/* same MKI */
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attr->key_params[0].mki = 1;
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attr->key_params[1].mki = 1;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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/* different MKI lengths */
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attr->key_params[1].mki = 2;
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attr->key_params[0].mki_length = 1;
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attr->key_params[1].mki_length = 3;
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (attr, NULL));
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g_assert_null (calls_srtp_print_sdp_crypto_attribute (NULL, NULL));
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}
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static void
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test_parse (void)
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{
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g_autoptr (calls_srtp_crypto_attribute) attr_simple = NULL;
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g_autoptr (calls_srtp_crypto_attribute) attr_parsed_simple = NULL;
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g_autofree char *attr_simple_str = NULL;
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g_autofree char *attr_simple_str_expected = NULL;
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g_autoptr (calls_srtp_crypto_attribute) attr_multi = NULL;
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g_autoptr (calls_srtp_crypto_attribute) attr_parsed_multi = NULL;
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g_autofree char *attr_multi_str = NULL;
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g_autofree char *attr_multi_str_expected = NULL;
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g_autofree guchar *key_salt = NULL;
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/* single key */
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attr_simple = calls_srtp_crypto_attribute_new (1);
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key_salt = calls_srtp_generate_key_salt (30);
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attr_simple->tag = 1;
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attr_simple->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_32;
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attr_simple->key_params[0].b64_keysalt = g_base64_encode (key_salt, 30);
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attr_simple_str = calls_srtp_print_sdp_crypto_attribute (attr_simple, NULL);
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attr_simple_str_expected =
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g_strdup_printf ("a=crypto:%d AES_CM_128_HMAC_SHA1_32 inline:%s",
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attr_simple->tag,
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attr_simple->key_params[0].b64_keysalt);
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g_assert_cmpstr (attr_simple_str, ==, attr_simple_str_expected);
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attr_parsed_simple = calls_srtp_parse_sdp_crypto_attribute (attr_simple_str, NULL);
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assert_attr_eq (attr_simple, attr_parsed_simple);
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/* multiple keys */
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attr_multi = calls_srtp_crypto_attribute_new (2);
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attr_multi->tag = 42;
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attr_multi->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_80;
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calls_srtp_crypto_attribute_init_keys (attr_multi);
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attr_multi_str = calls_srtp_print_sdp_crypto_attribute (attr_multi, NULL);
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attr_multi_str_expected =
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g_strdup_printf ("a=crypto:%d AES_CM_128_HMAC_SHA1_80 "
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"inline:%s|%" G_GUINT64_FORMAT ":%u;"
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"inline:%s|%" G_GUINT64_FORMAT ":%u",
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attr_multi->tag,
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attr_multi->key_params[0].b64_keysalt,
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attr_multi->key_params[0].mki,
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attr_multi->key_params[0].mki_length,
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attr_multi->key_params[1].b64_keysalt,
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attr_multi->key_params[1].mki,
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attr_multi->key_params[1].mki_length);
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g_assert_cmpstr (attr_multi_str, ==, attr_multi_str_expected);
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attr_parsed_multi = calls_srtp_parse_sdp_crypto_attribute (attr_multi_str, NULL);
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assert_attr_eq (attr_multi, attr_parsed_multi);
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}
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static void
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test_srtp_params (void)
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{
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calls_srtp_crypto_attribute *attr = calls_srtp_crypto_attribute_new (1);
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const char *srtp_cipher;
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const char *srtp_auth;
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const char *srtcp_cipher;
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const char *srtcp_auth;
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GstSrtpCipherType srtp_cipher_enum;
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GstSrtpAuthType srtp_auth_enum;
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GstSrtpCipherType srtcp_cipher_enum;
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GstSrtpAuthType srtcp_auth_enum;
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_32;
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attr->unencrypted_srtp = FALSE;
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attr->unauthenticated_srtp = FALSE;
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attr->unencrypted_srtcp = FALSE;
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g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
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&srtp_cipher,
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&srtp_auth,
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&srtcp_cipher,
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&srtcp_auth));
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g_assert_cmpstr (srtp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtp_auth, ==, "hmac-sha1-32");
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g_assert_cmpstr (srtcp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtcp_auth, ==, "hmac-sha1-32");
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g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
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&srtp_cipher_enum,
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&srtp_auth_enum,
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&srtcp_cipher_enum,
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&srtcp_auth_enum));
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g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_32);
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g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_32);
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_32;
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attr->unencrypted_srtp = TRUE;
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attr->unauthenticated_srtp = FALSE;
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attr->unencrypted_srtcp = FALSE;
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g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
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&srtp_cipher,
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&srtp_auth,
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&srtcp_cipher,
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&srtcp_auth));
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g_assert_cmpstr (srtp_cipher, ==, "null");
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g_assert_cmpstr (srtp_auth, ==, "hmac-sha1-32");
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g_assert_cmpstr (srtcp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtcp_auth, ==, "hmac-sha1-32");
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g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
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&srtp_cipher_enum,
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&srtp_auth_enum,
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&srtcp_cipher_enum,
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&srtcp_auth_enum));
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g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_NULL);
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g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_32);
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g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_32);
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_32;
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attr->unencrypted_srtp = FALSE;
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attr->unauthenticated_srtp = TRUE;
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attr->unencrypted_srtcp = FALSE;
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g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
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&srtp_cipher,
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&srtp_auth,
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&srtcp_cipher,
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&srtcp_auth));
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g_assert_cmpstr (srtp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtp_auth, ==, "null");
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g_assert_cmpstr (srtcp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtcp_auth, ==, "hmac-sha1-32");
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g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
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&srtp_cipher_enum,
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&srtp_auth_enum,
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&srtcp_cipher_enum,
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&srtcp_auth_enum));
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g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_NULL);
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g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_32);
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_32;
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attr->unencrypted_srtp = FALSE;
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attr->unauthenticated_srtp = FALSE;
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attr->unencrypted_srtcp = TRUE;
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g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
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&srtp_cipher,
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&srtp_auth,
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&srtcp_cipher,
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&srtcp_auth));
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g_assert_cmpstr (srtp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtp_auth, ==, "hmac-sha1-32");
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g_assert_cmpstr (srtcp_cipher, ==, "null");
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g_assert_cmpstr (srtcp_auth, ==, "null");
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g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
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&srtp_cipher_enum,
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&srtp_auth_enum,
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&srtcp_cipher_enum,
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&srtcp_auth_enum));
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g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_32);
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g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_NULL);
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g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_NULL);
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_80;
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attr->unencrypted_srtp = FALSE;
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attr->unauthenticated_srtp = FALSE;
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attr->unencrypted_srtcp = FALSE;
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g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
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&srtp_cipher,
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&srtp_auth,
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&srtcp_cipher,
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&srtcp_auth));
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g_assert_cmpstr (srtp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtp_auth, ==, "hmac-sha1-80");
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g_assert_cmpstr (srtcp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtcp_auth, ==, "hmac-sha1-80");
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g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
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&srtp_cipher_enum,
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&srtp_auth_enum,
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&srtcp_cipher_enum,
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&srtcp_auth_enum));
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g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_80);
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g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_80);
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attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_80;
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attr->unencrypted_srtp = TRUE;
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attr->unauthenticated_srtp = FALSE;
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attr->unencrypted_srtcp = FALSE;
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g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
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&srtp_cipher,
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&srtp_auth,
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&srtcp_cipher,
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&srtcp_auth));
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g_assert_cmpstr (srtp_cipher, ==, "null");
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g_assert_cmpstr (srtp_auth, ==, "hmac-sha1-80");
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g_assert_cmpstr (srtcp_cipher, ==, "aes-128-icm");
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g_assert_cmpstr (srtcp_auth, ==, "hmac-sha1-80");
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g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
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&srtp_cipher_enum,
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&srtp_auth_enum,
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&srtcp_cipher_enum,
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&srtcp_auth_enum));
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g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_NULL);
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g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_80);
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g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
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g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_80);
|
|
|
|
|
|
attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_80;
|
|
attr->unencrypted_srtp = FALSE;
|
|
attr->unauthenticated_srtp = TRUE;
|
|
attr->unencrypted_srtcp = FALSE;
|
|
|
|
g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
|
|
&srtp_cipher,
|
|
&srtp_auth,
|
|
&srtcp_cipher,
|
|
&srtcp_auth));
|
|
g_assert_cmpstr (srtp_cipher, ==, "aes-128-icm");
|
|
g_assert_cmpstr (srtp_auth, ==, "null");
|
|
g_assert_cmpstr (srtcp_cipher, ==, "aes-128-icm");
|
|
g_assert_cmpstr (srtcp_auth, ==, "hmac-sha1-80");
|
|
|
|
g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
|
|
&srtp_cipher_enum,
|
|
&srtp_auth_enum,
|
|
&srtcp_cipher_enum,
|
|
&srtcp_auth_enum));
|
|
|
|
g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
|
|
g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_NULL);
|
|
g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
|
|
g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_80);
|
|
|
|
|
|
attr->crypto_suite = CALLS_SRTP_SUITE_AES_CM_128_SHA1_80;
|
|
attr->unencrypted_srtp = FALSE;
|
|
attr->unauthenticated_srtp = FALSE;
|
|
attr->unencrypted_srtcp = TRUE;
|
|
|
|
g_assert_true (calls_srtp_crypto_get_srtpdec_params (attr,
|
|
&srtp_cipher,
|
|
&srtp_auth,
|
|
&srtcp_cipher,
|
|
&srtcp_auth));
|
|
g_assert_cmpstr (srtp_cipher, ==, "aes-128-icm");
|
|
g_assert_cmpstr (srtp_auth, ==, "hmac-sha1-80");
|
|
g_assert_cmpstr (srtcp_cipher, ==, "null");
|
|
g_assert_cmpstr (srtcp_auth, ==, "null");
|
|
|
|
g_assert_true (calls_srtp_crypto_get_srtpenc_params (attr,
|
|
&srtp_cipher_enum,
|
|
&srtp_auth_enum,
|
|
&srtcp_cipher_enum,
|
|
&srtcp_auth_enum));
|
|
|
|
g_assert_cmpint (srtp_cipher_enum, ==, GST_SRTP_CIPHER_AES_128_ICM);
|
|
g_assert_cmpint (srtp_auth_enum, ==, GST_SRTP_AUTH_HMAC_SHA1_80);
|
|
g_assert_cmpint (srtcp_cipher_enum, ==, GST_SRTP_CIPHER_NULL);
|
|
g_assert_cmpint (srtcp_auth_enum, ==, GST_SRTP_AUTH_NULL);
|
|
|
|
|
|
attr->crypto_suite = CALLS_SRTP_SUITE_UNKNOWN;
|
|
|
|
g_assert_false (calls_srtp_crypto_get_srtpdec_params (attr,
|
|
&srtp_cipher,
|
|
&srtp_auth,
|
|
&srtcp_cipher,
|
|
&srtcp_auth));
|
|
|
|
g_assert_false (calls_srtp_crypto_get_srtpenc_params (attr,
|
|
&srtp_cipher_enum,
|
|
&srtp_auth_enum,
|
|
&srtcp_cipher_enum,
|
|
&srtcp_auth_enum));
|
|
calls_srtp_crypto_attribute_free (attr);
|
|
}
|
|
|
|
|
|
int
|
|
main (int argc,
|
|
char *argv[])
|
|
{
|
|
g_test_init (&argc, &argv, NULL);
|
|
|
|
g_test_add_func ("/Calls/SRTP-SDP/crypto_attribute_validity", test_crypto_attribute_validity);
|
|
g_test_add_func ("/Calls/SRTP-SDP/parse", test_parse);
|
|
g_test_add_func ("/Calls/SRTP/srtp_params", test_srtp_params);
|
|
|
|
return g_test_run ();
|
|
}
|