From 74b2559b043f37204697063bbe66daa4c503d41d Mon Sep 17 00:00:00 2001 From: Anthony Alba Date: Fri, 24 Mar 2017 17:58:47 +0800 Subject: [PATCH] AES CM static test vectors --- tests/Makefile.aes | 38 ++++++ tests/t_crypt.c | 288 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 326 insertions(+) create mode 100644 tests/Makefile.aes create mode 100644 tests/t_crypt.c diff --git a/tests/Makefile.aes b/tests/Makefile.aes new file mode 100644 index 000000000..46714a431 --- /dev/null +++ b/tests/Makefile.aes @@ -0,0 +1,38 @@ + +## +## Build daemon/ +## cd tests/ +## make -f Makefile.aes, output is binary t_crypt +## run: ./t_crypt + +CC = gcc + +CPPFLAGS = -I../daemon -I../lib +OBJS_DIR = ../daemon/ + +OBJS = crypto.o log.o loglib.o + +LDFLAGS = $(shell pkg-config --libs glib-2.0) +LDFLAGS += $(shell pkg-config --libs openssl) + +CFLAGS = -g $(shell pkg-config --cflags glib-2.0) -D_GNU_SOURCE + +%.d: %.c + @set -e; rm -f $@; \ + $(CC) -M $(CPPFLAGS) $(shell pkg-config --cflags glib-2.0) -D_GNU_SOURCE $< > $@.$$$$; \ + sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ + rm -f $@.$$$$ + +all: t_crypt + +sources = t_crypt.c + +include $(sources:.c=.d) + +t_crypt: t_crypt.o + gcc -o $@ $< $(addprefix $(OBJS_DIR), $(OBJS)) $(LDFLAGS) + +.PHONY: clean + +clean: + -rm -f t_crypt t_crypt.o diff --git a/tests/t_crypt.c b/tests/t_crypt.c new file mode 100644 index 000000000..2ec710d79 --- /dev/null +++ b/tests/t_crypt.c @@ -0,0 +1,288 @@ +#include +#include + +#include "crypto.h" +#include "rtplib.h" + +uint8_t test_key[46] = { + 0xe1, 0xf9, 0x7a, 0x0d, 0x3e, 0x01, 0x8b, 0xe0, + 0xd6, 0x4f, 0xa3, 0x2c, 0x06, 0xde, 0x41, 0x39, + 0x0e, 0xc6, 0x75, 0xad, 0x49, 0x8a, 0xfe, 0xeb, + 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6, 0xc1, 0x73, + 0xc3, 0x17, 0xf2, 0xda, 0xbe, 0x35, 0x77, 0x93, + 0xb6, 0x96, 0x0b, 0x3a, 0xab, 0xe6 +}; + + + +uint8_t rtp_plaintext_ref[28] = { + 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, + 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab +}; + + +uint8_t rtcp_plaintext_ref[24] = { + 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, +}; + +// SRTP Test Vectors +// ROC = 0, SSRC = 0xcafebabe, SEQ_NUM = 0x1234 +uint8_t srtp_ciphertext_128[38] = { + 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, + 0xca, 0xfe, 0xba, 0xbe, 0x4e, 0x55, 0xdc, 0x4c, + 0xe7, 0x99, 0x78, 0xd8, 0x8c, 0xa4, 0xd2, 0x15, + 0x94, 0x9d, 0x24, 0x02, 0xb7, 0x8d, 0x6a, 0xcc, + 0x99, 0xea, 0x17, 0x9b, 0x8d, 0xbb +}; + +uint8_t srtp_ciphertext_192[38] = { + 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, + 0xca, 0xfe, 0xba, 0xbe, 0x01, 0x57, 0x81, 0x89, + 0x44, 0x62, 0x52, 0x9d, 0x91, 0xcf, 0x36, 0x59, + 0xd2, 0x46, 0x2d, 0xb3, 0x08, 0xd9, 0xa0, 0x44, + 0xc5, 0xd7, 0xd6, 0x8b, 0x26, 0xba +}; + +uint8_t srtp_ciphertext_256[38] = { + 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, + 0xca, 0xfe, 0xba, 0xbe, 0x00, 0x98, 0x21, 0x9f, + 0x7e, 0xbd, 0xba, 0x1c, 0x3d, 0x22, 0xf4, 0x93, + 0x6f, 0x1e, 0xac, 0x99, 0x06, 0xf6, 0xb2, 0x27, + 0xc8, 0x49, 0x61, 0xa7, 0xb4, 0x28 +}; + + +// SRTCP Test Vectors +// SSRC = 0xcafebabe +uint8_t srtcp_ciphertext_128[38] = { + 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, + 0x71, 0x28, 0x03, 0x5b, 0xe4, 0x87, 0xb9, 0xbd, + 0xbe, 0xf8, 0x90, 0x41, 0xf9, 0x77, 0xa5, 0xa8, + 0x80, 0x00, 0x00, 0x01, 0x99, 0x3e, 0x08, 0xcd, + 0x54, 0xd6, 0xc1, 0x23, 0x07, 0x98 +}; + +uint8_t srtcp_ciphertext_192[38] = { + 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, + 0x96, 0x6d, 0x60, 0x3e, 0x71, 0xf9, 0xaf, 0x33, + 0x5c, 0xf9, 0x09, 0x1a, 0x50, 0xca, 0x4d, 0x3a, + 0x80, 0x00, 0x00, 0x01, 0xd4, 0x2b, 0x40, 0x21, + 0x8d, 0xde, 0x49, 0x90, 0xbd, 0xef +}; + +uint8_t srtcp_ciphertext_256[38] = { + 0x81, 0xc8, 0x00, 0x0b, 0xca, 0xfe, 0xba, 0xbe, + 0x0a, 0x86, 0x5d, 0x33, 0x9e, 0x31, 0x26, 0x93, + 0x59, 0x23, 0x87, 0xd4, 0x5b, 0x99, 0xa5, 0x57, + 0x80, 0x00, 0x00, 0x01, 0x84, 0xf3, 0xb4, 0xf2, + 0xb5, 0x95, 0x61, 0x5a, 0xf9, 0xb5 +}; + +// Another set of AES-256 test vectors from libsrtp +uint8_t aes_256_test_key[46] = { + 0xf0, 0xf0, 0x49, 0x14, 0xb5, 0x13, 0xf2, 0x76, + 0x3a, 0x1b, 0x1f, 0xa1, 0x30, 0xf1, 0x0e, 0x29, + 0x98, 0xf6, 0xf6, 0xe4, 0x3e, 0x43, 0x09, 0xd1, + 0xe6, 0x22, 0xa0, 0xe3, 0x32, 0xb9, 0xf1, 0xb6, + + 0x3b, 0x04, 0x80, 0x3d, 0xe5, 0x1e, 0xe7, 0xc9, + 0x64, 0x23, 0xab, 0x5b, 0x78, 0xd2 +}; +uint8_t aes_256_rtp_plaintext_ref[28] = { + 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, + 0xca, 0xfe, 0xba, 0xbe, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab +}; + +uint8_t aes_256_srtp_ciphertext[38] = { + 0x80, 0x0f, 0x12, 0x34, 0xde, 0xca, 0xfb, 0xad, + 0xca, 0xfe, 0xba, 0xbe, 0xf1, 0xd9, 0xde, 0x17, + 0xff, 0x25, 0x1f, 0xf1, 0xaa, 0x00, 0x77, 0x74, + 0xb0, 0xb4, 0xb4, 0x0d, 0xa0, 0x8d, 0x9d, 0x9a, + 0x5b, 0x3a, 0x55, 0xd8, 0x87, 0x3b +}; + + +#define RTP_HEADER_LEN 12 +#define RTCP_HEADER_LEN 8 +// Test: AES-128 CM +void srtp_validate (struct crypto_context *c, struct crypto_context *c2, char* message, uint8_t *plaintext, uint8_t *ciphertext, + uint8_t *rtcp_plaintext, uint8_t *rtcp_ciphertext) +{ + str payload, hash; + uint8_t o_hash[10]; + + uint8_t srtp_plaintext[38]; + uint8_t srtp_ciphertext[38]; + + uint8_t srtcp_plaintext[38]; + uint8_t srtcp_ciphertext[38]; + + memcpy(srtp_plaintext, plaintext, 28); + memcpy(srtp_ciphertext, ciphertext, 38); + // in-place crypto so we must encrypt first + payload.len = 16; + payload.s = srtp_plaintext+RTP_HEADER_LEN; + crypto_encrypt_rtp(c, (struct rtp_header *)srtp_plaintext, &payload, ntohs(((struct rtp_header *)srtp_plaintext)->seq_num)); + + hash.len = 28; + hash.s = srtp_plaintext; + c->params.crypto_suite->hash_rtp(c, srtp_plaintext+28, &hash, ntohs(((struct rtp_header *)srtp_plaintext)->seq_num)); + assert( memcmp(payload.s, srtp_ciphertext+RTP_HEADER_LEN, 26) == 0 ); + + printf("%s RTP encrypt: PASS\n", message); + + hash.s = srtp_ciphertext; + c->params.crypto_suite->hash_rtp(c, o_hash, &hash, ntohs(((struct rtp_header *)srtp_plaintext)->seq_num)); + payload.len = 16; + payload.s = srtp_ciphertext+RTP_HEADER_LEN; + crypto_decrypt_rtp(c, (struct rtp_header *)srtp_ciphertext, &payload, ntohs(((struct rtp_header *)srtp_ciphertext)->seq_num)); + assert( memcmp(payload.s, rtp_plaintext_ref+RTP_HEADER_LEN, 16) == 0 ); + assert( memcmp(o_hash, srtp_ciphertext+RTP_HEADER_LEN+16, 10) == 0 ); + + printf("%s RTP decrypt: PASS\n", message); + + // in-place crypto so we must encrypt first + if (!c2) return; + memcpy(srtcp_plaintext, rtcp_plaintext, 24); + memcpy(srtcp_ciphertext, rtcp_ciphertext, 38); + memcpy(srtcp_plaintext+24, srtcp_ciphertext+24, 4); + payload.len = 16; + payload.s = srtcp_plaintext+RTCP_HEADER_LEN; + crypto_encrypt_rtcp(c2, (struct rtcp_packet *)srtcp_plaintext, &payload, 1); + + hash.len = 28; + hash.s = srtcp_plaintext; + c->params.crypto_suite->hash_rtcp(c2, srtcp_plaintext+28, &hash); + assert( memcmp(payload.s, srtcp_ciphertext+RTCP_HEADER_LEN, 30) == 0 ); + + printf("%s RTCP encrypt: PASS\n", message); + + hash.s = srtcp_ciphertext; + c->params.crypto_suite->hash_rtcp(c2, o_hash, &hash); + payload.len = 16; + payload.s = srtcp_ciphertext+RTCP_HEADER_LEN; + crypto_decrypt_rtcp(c2, (struct rtcp_packet *)srtcp_ciphertext, &payload, 1); + assert( memcmp(payload.s, rtcp_plaintext_ref+RTCP_HEADER_LEN, 16) == 0 ); + assert( memcmp(o_hash, srtcp_ciphertext+RTCP_HEADER_LEN+16+4, 10) == 0 ); + + printf("%s RTCP decrypt: PASS\n", message); +} + +extern void crypto_init_main(); + +void check_session_keys(struct crypto_context *c, int i) { + str s; + str_init_len_assert(&s, c->session_key, c->params.crypto_suite->session_key_len); + if (crypto_gen_session_key(c, &s, i++, 6)) + goto error; + str_init_len_assert(&s, c->session_auth_key, c->params.crypto_suite->srtp_auth_key_len); + if (crypto_gen_session_key(c, &s, i++, 6)) + goto error; + str_init_len_assert(&s, c->session_salt, c->params.crypto_suite->session_salt_len); + if (crypto_gen_session_key(c, &s, i, 6)) + goto error; + + c->have_session_key = 1; + crypto_init_session_key(c); + +error: + return; +} + +int main(int argc, char** argv) { + + str suite; + str s; + const struct crypto_suite *c; + struct crypto_context ctx, ctx2; + + crypto_init_main(); + + str_init(&suite, "AES_CM_128_HMAC_SHA1_80"); + c = crypto_find_suite(&suite); + assert(c); + + memset(&ctx, 0, sizeof(ctx)); + ctx.params.crypto_suite = c; + memcpy(ctx.params.master_key, test_key, 16); + memcpy(ctx.params.master_salt, (uint8_t*)test_key+16, 14); + ctx.params.mki_len = 0; + + check_session_keys(&ctx, 0); + + memset(&ctx2, 0, sizeof(ctx2)); + ctx2.params.crypto_suite = c; + memcpy(ctx2.params.master_key, test_key, 16); + memcpy(ctx2.params.master_salt, (uint8_t*)test_key+16, 14); + ctx2.params.mki_len = 0; + + check_session_keys(&ctx2, 3); + + srtp_validate(&ctx, &ctx2, "SRTP AES-CM-128", rtp_plaintext_ref, srtp_ciphertext_128, + rtcp_plaintext_ref, srtcp_ciphertext_128); + + str_init(&suite, "AES_CM_192_HMAC_SHA1_80"); + c = crypto_find_suite(&suite); + assert(c); + + memset(&ctx, 0, sizeof(ctx)); + ctx.params.crypto_suite = c; + memcpy(ctx.params.master_key, test_key, 24); + memcpy(ctx.params.master_salt, (uint8_t*)test_key+24, 14); + ctx.params.mki_len = 0; + + check_session_keys(&ctx, 0); + + memset(&ctx2, 0, sizeof(ctx2)); + ctx2.params.crypto_suite = c; + memcpy(ctx2.params.master_key, test_key, 24); + memcpy(ctx2.params.master_salt, (uint8_t*)test_key+24, 14); + ctx2.params.mki_len = 0; + + check_session_keys(&ctx2, 3); + + srtp_validate(&ctx, &ctx2, "SRTP AES-CM-192", rtp_plaintext_ref, srtp_ciphertext_192, + rtcp_plaintext_ref, srtcp_ciphertext_192); + + str_init(&suite, "AES_CM_256_HMAC_SHA1_80"); + c = crypto_find_suite(&suite); + assert(c); + + memset(&ctx, 0, sizeof(ctx)); + ctx.params.crypto_suite = c; + memcpy(ctx.params.master_key, test_key, 32); + memcpy(ctx.params.master_salt, (uint8_t*)test_key+32, 14); + ctx.params.mki_len = 0; + + check_session_keys(&ctx, 0); + + memset(&ctx2, 0, sizeof(ctx2)); + ctx2.params.crypto_suite = c; + memcpy(ctx2.params.master_key, test_key, 32); + memcpy(ctx2.params.master_salt, (uint8_t*)test_key+32, 14); + ctx2.params.mki_len = 0; + + check_session_keys(&ctx2, 3); + + srtp_validate(&ctx, &ctx2, "SRTP AES-CM-256", rtp_plaintext_ref, srtp_ciphertext_256, + rtcp_plaintext_ref, srtcp_ciphertext_256); + + + memset(&ctx, 0, sizeof(ctx)); + ctx.params.crypto_suite = c; + memcpy(ctx.params.master_key, aes_256_test_key, 32); + memcpy(ctx.params.master_salt, (uint8_t*)aes_256_test_key+32, 14); + ctx.params.mki_len = 0; + + check_session_keys(&ctx, 0); + + srtp_validate(&ctx, NULL, "extra AES-CM-256", aes_256_rtp_plaintext_ref, aes_256_srtp_ciphertext, + NULL, NULL); + +}