From 14e76b9958b6cb93944a991ffaa5125f601f3d20 Mon Sep 17 00:00:00 2001 From: Philipp Maier Date: Tue, 28 Mar 2017 18:36:52 +0200 Subject: gsm0808: Add utils for Encryption Information The planned support for true A over IP requires the encoding of the an Encryption Information element (see also BSS_MAP_MSG_CIPHER_MODE_CMD). This commt adds encoding/decoding functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: I8262050a9d9fd3f17462cfbb046c6e034dccc6fb --- tests/gsm0808/gsm0808_test.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'tests') diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c index 0dd9e846..5fe9c876 100644 --- a/tests/gsm0808/gsm0808_test.c +++ b/tests/gsm0808/gsm0808_test.c @@ -571,6 +571,45 @@ static void test_gsm0808_enc_dec_channel_type() msgb_free(msg); } +static void test_gsm0808_enc_dec_encrypt_info() +{ + struct gsm0808_encrypt_info enc_ei; + struct gsm0808_encrypt_info dec_ei; + struct msgb *msg; + uint8_t ei_enc_expected[] = + { GSM0808_IE_ENCRYPTION_INFORMATION, 0x09, 0x03, 0xaa, 0xbb, + 0xcc, 0xdd, 0xee, 0xff, 0x23, 0x42 + }; + uint8_t rc_enc; + int rc_dec; + + memset(&enc_ei, 0, sizeof(enc_ei)); + enc_ei.perm_algo[0] = GSM0808_ALG_ID_A5_0; + enc_ei.perm_algo[1] = GSM0808_ALG_ID_A5_1; + enc_ei.perm_algo_len = 2; + enc_ei.key[0] = 0xaa; + enc_ei.key[1] = 0xbb; + enc_ei.key[2] = 0xcc; + enc_ei.key[3] = 0xdd; + enc_ei.key[4] = 0xee; + enc_ei.key[5] = 0xff; + enc_ei.key[6] = 0x23; + enc_ei.key[7] = 0x42; + enc_ei.key_len = 8; + + msg = msgb_alloc(1024, "output buffer"); + rc_enc = gsm0808_enc_encrypt_info(msg, &enc_ei); + OSMO_ASSERT(rc_enc == 11); + OSMO_ASSERT(memcmp(ei_enc_expected, msg->data, msg->len) == 0); + + rc_dec = gsm0808_dec_encrypt_info(&dec_ei, msg->data + 2, msg->len - 2); + OSMO_ASSERT(rc_dec == 9); + + OSMO_ASSERT(memcmp(&enc_ei, &dec_ei, sizeof(enc_ei)) == 0); + + msgb_free(msg); +} + int main(int argc, char **argv) { printf("Testing generation of GSM0808 messages\n"); @@ -597,6 +636,7 @@ int main(int argc, char **argv) test_gsm0808_enc_dec_speech_codec_ext_with_cfg(); test_gsm0808_enc_dec_speech_codec_list(); test_gsm0808_enc_dec_channel_type(); + test_gsm0808_enc_dec_encrypt_info(); printf("Done\n"); return EXIT_SUCCESS; -- cgit v1.2.3