/* * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include #include #ifdef __VMS # pragma names save # pragma names as_is,shortened #endif #include "../ssl/ssl_locl.h" #ifdef __VMS # pragma names restore #endif #include "testutil.h" #define IVLEN 12 #define KEYLEN 16 /* The following are self-generated test vectors. This gives us very little * confidence that we've got the implementation right, but at least tells us * if we accidentally break something in the future. Until we can get some * other source of test vectors this is all we've got. * TODO(TLS1.3): As and when official vectors become available we should use * those, e.g. see * https://www.ietf.org/id/draft-thomson-tls-tls13-vectors-00.txt, however at * the time of writing these are not suitable because they are based on * draft -16, which works differently to the draft -20 vectors below. */ static unsigned char hs_start_hash[] = { 0xec, 0x14, 0x7a, 0x06, 0xde, 0xa3, 0xc8, 0x84, 0x6c, 0x02, 0xb2, 0x23, 0x8e, 0x41, 0xbd, 0xdc, 0x9d, 0x89, 0xf9, 0xae, 0xa1, 0x7b, 0x5e, 0xfd, 0x4d, 0x74, 0x82, 0xaf, 0x75, 0x88, 0x1c, 0x0a }; static unsigned char hs_full_hash[] = { 0x75, 0x1a, 0x3d, 0x4a, 0x14, 0xdf, 0xab, 0xeb, 0x68, 0xe9, 0x2c, 0xa5, 0x91, 0x8e, 0x24, 0x08, 0xb9, 0xbc, 0xb0, 0x74, 0x89, 0x82, 0xec, 0x9c, 0x32, 0x30, 0xac, 0x30, 0xbb, 0xeb, 0x23, 0xe2, }; static unsigned char early_secret[] = { 0x33, 0xad, 0x0a, 0x1c, 0x60, 0x7e, 0xc0, 0x3b, 0x09, 0xe6, 0xcd, 0x98, 0x93, 0x68, 0x0c, 0xe2, 0x10, 0xad, 0xf3, 0x00, 0xaa, 0x1f, 0x26, 0x60, 0xe1, 0xb2, 0x2e, 0x10, 0xf1, 0x70, 0xf9, 0x2a }; static unsigned char ecdhe_secret[] = { 0xe7, 0xb8, 0xfe, 0xf8, 0x90, 0x3b, 0x52, 0x0c, 0xb9, 0xa1, 0x89, 0x71, 0xb6, 0x9d, 0xd4, 0x5d, 0xca, 0x53, 0xce, 0x2f, 0x12, 0xbf, 0x3b, 0xef, 0x93, 0x15, 0xe3, 0x12, 0x71, 0xdf, 0x4b, 0x40 }; static unsigned char handshake_secret[] = { 0xf5, 0x51, 0xd0, 0xbd, 0x9e, 0x6a, 0xc0, 0x95, 0x5f, 0x8e, 0xae, 0xb6, 0x28, 0x2e, 0x8d, 0x9e, 0xf3, 0xd4, 0x08, 0x57, 0x81, 0xbc, 0x9d, 0x80, 0x91, 0x8a, 0x81, 0x33, 0x86, 0x58, 0x7f, 0x46 }; static const char *client_hts_label = "c hs traffic"; static unsigned char client_hts[] = { 0x61, 0x7b, 0x35, 0x07, 0x6b, 0x9d, 0x0e, 0x08, 0xcf, 0x73, 0x1d, 0x94, 0xa8, 0x66, 0x14, 0x78, 0x41, 0x09, 0xef, 0x25, 0x55, 0x51, 0x92, 0x1d, 0xd4, 0x6e, 0x04, 0x01, 0x35, 0xcf, 0x46, 0xab }; static unsigned char client_hts_key[] = { 0x62, 0xd0, 0xdd, 0x00, 0xf6, 0x96, 0x19, 0xd3, 0xb8, 0x19, 0x3a, 0xb4, 0xa0, 0x95, 0x85, 0xa7 }; static unsigned char client_hts_iv[] = { 0xff, 0xf7, 0x5d, 0xf5, 0xad, 0x35, 0xd5, 0xcb, 0x3c, 0x53, 0xf3, 0xa9 }; static const char *server_hts_label = "s hs traffic"; static unsigned char server_hts[] = { 0xfc, 0xf7, 0xdf, 0xe6, 0x4f, 0xa2, 0xc0, 0x4f, 0x62, 0x35, 0x38, 0x7f, 0x43, 0x4e, 0x01, 0x42, 0x23, 0x36, 0xd9, 0xc0, 0x39, 0xde, 0x68, 0x47, 0xa0, 0xb9, 0xdd, 0xcf, 0x29, 0xa8, 0x87, 0x59 }; static unsigned char server_hts_key[] = { 0x04, 0x67, 0xf3, 0x16, 0xa8, 0x05, 0xb8, 0xc4, 0x97, 0xee, 0x67, 0x04, 0x7b, 0xbc, 0xbc, 0x54 }; static unsigned char server_hts_iv[] = { 0xde, 0x83, 0xa7, 0x3e, 0x9d, 0x81, 0x4b, 0x04, 0xc4, 0x8b, 0x78, 0x09 }; static unsigned char master_secret[] = { 0x34, 0x83, 0x83, 0x84, 0x67, 0x12, 0xe7, 0xff, 0x24, 0xe8, 0x6e, 0x70, 0x56, 0x95, 0x16, 0x71, 0x43, 0x7f, 0x19, 0xd7, 0x85, 0x06, 0x9d, 0x75, 0x70, 0x49, 0x6e, 0x6c, 0xa4, 0x81, 0xf0, 0xb8 }; static const char *client_ats_label = "c ap traffic"; static unsigned char client_ats[] = { 0xc1, 0x4a, 0x6d, 0x79, 0x76, 0xd8, 0x10, 0x2b, 0x5a, 0x0c, 0x99, 0x51, 0x49, 0x3f, 0xee, 0x87, 0xdc, 0xaf, 0xf8, 0x2c, 0x24, 0xca, 0xb2, 0x14, 0xe8, 0xbe, 0x71, 0xa8, 0x20, 0x6d, 0xbd, 0xa5 }; static unsigned char client_ats_key[] = { 0xcc, 0x9f, 0x5f, 0x98, 0x0b, 0x5f, 0x10, 0x30, 0x6c, 0xba, 0xd7, 0xbe, 0x98, 0xd7, 0x57, 0x2e }; static unsigned char client_ats_iv[] = { 0xb8, 0x09, 0x29, 0xe8, 0xd0, 0x2c, 0x70, 0xf6, 0x11, 0x62, 0xed, 0x6b }; static const char *server_ats_label = "s ap traffic"; static unsigned char server_ats[] = { 0x2c, 0x90, 0x77, 0x38, 0xd3, 0xf8, 0x37, 0x02, 0xd1, 0xe4, 0x59, 0x8f, 0x48, 0x48, 0x53, 0x1d, 0x9f, 0x93, 0x65, 0x49, 0x1b, 0x9f, 0x7f, 0x52, 0xc8, 0x22, 0x29, 0x0d, 0x4c, 0x23, 0x21, 0x92 }; static unsigned char server_ats_key[] = { 0x0c, 0xb2, 0x95, 0x62, 0xd8, 0xd8, 0x8f, 0x48, 0xb0, 0x2c, 0xbf, 0xbe, 0xd7, 0xe6, 0x2b, 0xb3 }; static unsigned char server_ats_iv[] = { 0x0d, 0xb2, 0x8f, 0x98, 0x85, 0x86, 0xa1, 0xb7, 0xe4, 0xd5, 0xc6, 0x9c }; /* Mocked out implementations of various functions */ int ssl3_digest_cached_records(SSL *s, int keep) { return 1; } static int full_hash = 0; /* Give a hash of the currently set handshake */ int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, size_t *hashlen) { if (sizeof(hs_start_hash) > outlen || sizeof(hs_full_hash) != sizeof(hs_start_hash)) return 0; if (full_hash) { memcpy(out, hs_full_hash, sizeof(hs_full_hash)); *hashlen = sizeof(hs_full_hash); } else { memcpy(out, hs_start_hash, sizeof(hs_start_hash)); *hashlen = sizeof(hs_start_hash); } return 1; } const EVP_MD *ssl_handshake_md(SSL *s) { return EVP_sha256(); } void RECORD_LAYER_reset_read_sequence(RECORD_LAYER *rl) { } void RECORD_LAYER_reset_write_sequence(RECORD_LAYER *rl) { } int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, const EVP_MD **md, int *mac_pkey_type, size_t *mac_secret_size, SSL_COMP **comp, int use_etm) { return 0; } int tls1_alert_code(int code) { return code; } int ssl_log_secret(SSL *ssl, const char *label, const uint8_t *secret, size_t secret_len) { return 1; } const EVP_MD *ssl_md(int idx) { return EVP_sha256(); } /* End of mocked out code */ static int test_secret(SSL *s, unsigned char *prk, const unsigned char *label, size_t labellen, const unsigned char *ref_secret, const unsigned char *ref_key, const unsigned char *ref_iv) { size_t hashsize; unsigned char gensecret[EVP_MAX_MD_SIZE]; unsigned char hash[EVP_MAX_MD_SIZE]; unsigned char key[KEYLEN]; unsigned char iv[IVLEN]; const EVP_MD *md = ssl_handshake_md(s); if (!ssl_handshake_hash(s, hash, sizeof(hash), &hashsize)) { TEST_error("Failed to get hash"); return 0; } if (!tls13_hkdf_expand(s, md, prk, label, labellen, hash, hashsize, gensecret, hashsize)) { TEST_error("Secret generation failed"); return 0; } if (!TEST_mem_eq(gensecret, hashsize, ref_secret, hashsize)) return 0; if (!tls13_derive_key(s, md, gensecret, key, KEYLEN)) { TEST_error("Key generation failed"); return 0; } if (!TEST_mem_eq(key, KEYLEN, ref_key, KEYLEN)) return 0; if (!tls13_derive_iv(s, md, gensecret, iv, IVLEN)) { TEST_error("IV generation failed"); return 0; } if (!TEST_mem_eq(iv, IVLEN, ref_iv, IVLEN)) return 0; return 1; } static int test_handshake_secrets(void) { SSL_CTX *ctx = NULL; SSL *s = NULL; int ret = 0; size_t hashsize; unsigned char out_master_secret[EVP_MAX_MD_SIZE]; size_t master_secret_length; ctx = SSL_CTX_new(TLS_method()); if (!TEST_ptr(ctx)) goto err; s = SSL_new(ctx); if (!TEST_ptr(s )) goto err; s->session = SSL_SESSION_new(); if (!TEST_ptr(s->session)) goto err; if (!TEST_true(tls13_generate_secret(s, ssl_handshake_md(s), NULL, NULL, 0, (unsigned char *)&s->early_secret))) { TEST_info("Early secret generation failed"); goto err; } if (!TEST_mem_eq(s->early_secret, sizeof(early_secret), early_secret, sizeof(early_secret))) { TEST_info("Early secret does not match"); goto err; } if (!TEST_true(tls13_generate_handshake_secret(s, ecdhe_secret, sizeof(ecdhe_secret)))) { TEST_info("Handshake secret generation failed"); goto err; } if (!TEST_mem_eq(s->handshake_secret, sizeof(handshake_secret), handshake_secret, sizeof(handshake_secret))) goto err; hashsize = EVP_MD_size(ssl_handshake_md(s)); if (!TEST_size_t_eq(sizeof(client_hts), hashsize)) goto err; if (!TEST_size_t_eq(sizeof(client_hts_key), KEYLEN)) goto err; if (!TEST_size_t_eq(sizeof(client_hts_iv), IVLEN)) goto err; if (!TEST_true(test_secret(s, s->handshake_secret, (unsigned char *)client_hts_label, strlen(client_hts_label), client_hts, client_hts_key, client_hts_iv))) { TEST_info("Client handshake secret test failed"); goto err; } if (!TEST_size_t_eq(sizeof(server_hts), hashsize)) goto err; if (!TEST_size_t_eq(sizeof(server_hts_key), KEYLEN)) goto err; if (!TEST_size_t_eq(sizeof(server_hts_iv), IVLEN)) goto err; if (!TEST_true(test_secret(s, s->handshake_secret, (unsigned char *)server_hts_label, strlen(server_hts_label), server_hts, server_hts_key, server_hts_iv))) { TEST_info("Server handshake secret test failed"); goto err; } /* * Ensure the mocked out ssl_handshake_hash() returns the full handshake * hash. */ full_hash = 1; if (!TEST_true(tls13_generate_master_secret(s, out_master_secret, s->handshake_secret, hashsize, &master_secret_length))) { TEST_info("Master secret generation failed"); goto err; } if (!TEST_mem_eq(out_master_secret, master_secret_length, master_secret, sizeof(master_secret))) { TEST_info("Master secret does not match"); goto err; } if (!TEST_size_t_eq(sizeof(client_ats), hashsize)) goto err; if (!TEST_size_t_eq(sizeof(client_ats_key), KEYLEN)) goto err; if (!TEST_size_t_eq(sizeof(client_ats_iv), IVLEN)) goto err; if (!TEST_true(test_secret(s, out_master_secret, (unsigned char *)client_ats_label, strlen(client_ats_label), client_ats, client_ats_key, client_ats_iv))) { TEST_info("Client application data secret test failed"); goto err; } if (!TEST_size_t_eq(sizeof(server_ats), hashsize)) goto err; if (!TEST_size_t_eq(sizeof(server_ats_key), KEYLEN)) goto err; if (!TEST_size_t_eq(sizeof(server_ats_iv), IVLEN)) goto err; if (!TEST_true(test_secret(s, out_master_secret, (unsigned char *)server_ats_label, strlen(server_ats_label), server_ats, server_ats_key, server_ats_iv))) { TEST_info("Server application data secret test failed"); goto err; } ret = 1; err: SSL_free(s); SSL_CTX_free(ctx); return ret; } int setup_tests() { ADD_TEST(test_handshake_secrets); return 1; }