/* $OpenBSD: key_schedule.c,v 1.10 2022/11/26 16:08:56 tb Exp $ */ /* * Copyright (c) 2018-2019 Bob Beck * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include "ssl_local.h" #include "bytestring.h" #include "ssl_tlsext.h" #include "tls13_internal.h" static int failures = 0; static void hexdump(const unsigned char *buf, size_t len) { size_t i; for (i = 1; i <= len; i++) fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n"); fprintf(stderr, "\n"); } static void compare_data(const uint8_t *recv, size_t recv_len, const uint8_t *expect, size_t expect_len) { fprintf(stderr, "received:\n"); hexdump(recv, recv_len); fprintf(stderr, "test data:\n"); hexdump(expect, expect_len); } #define FAIL(msg, ...) \ do { \ fprintf(stderr, "[%s:%d] FAIL: ", __FILE__, __LINE__); \ fprintf(stderr, msg, ##__VA_ARGS__); \ failures++; \ } while(0) /* Hashes and secrets from test vector */ uint8_t chello[] = { 0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55 }; const struct tls13_secret chello_hash = { .data = chello, .len = 32, }; uint8_t cshello [] = { 0x86, 0x0c, 0x06, 0xed, 0xc0, 0x78, 0x58, 0xee, 0x8e, 0x78, 0xf0, 0xe7, 0x42, 0x8c, 0x58, 0xed, 0xd6, 0xb4, 0x3f, 0x2c, 0xa3, 0xe6, 0xe9, 0x5f, 0x02, 0xed, 0x06, 0x3c, 0xf0, 0xe1, 0xca, 0xd8 }; const struct tls13_secret cshello_hash = { .data = cshello, .len = 32, }; const uint8_t ecdhe [] = { 0x8b, 0xd4, 0x05, 0x4f, 0xb5, 0x5b, 0x9d, 0x63, 0xfd, 0xfb, 0xac, 0xf9, 0xf0, 0x4b, 0x9f, 0x0d, 0x35, 0xe6, 0xd6, 0x3f, 0x53, 0x75, 0x63, 0xef, 0xd4, 0x62, 0x72, 0x90, 0x0f, 0x89, 0x49, 0x2d }; uint8_t csfhello [] = { 0x96, 0x08, 0x10, 0x2a, 0x0f, 0x1c, 0xcc, 0x6d, 0xb6, 0x25, 0x0b, 0x7b, 0x7e, 0x41, 0x7b, 0x1a, 0x00, 0x0e, 0xaa, 0xda, 0x3d, 0xaa, 0xe4, 0x77, 0x7a, 0x76, 0x86, 0xc9, 0xff, 0x83, 0xdf, 0x13 }; const struct tls13_secret csfhello_hash = { .data = csfhello, .len = 32, }; /* Expected Values */ uint8_t expected_extracted_early[] = { 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 }; uint8_t expected_derived_early[] = { 0x6f, 0x26, 0x15, 0xa1, 0x08, 0xc7, 0x02, 0xc5, 0x67, 0x8f, 0x54, 0xfc, 0x9d, 0xba, 0xb6, 0x97, 0x16, 0xc0, 0x76, 0x18, 0x9c, 0x48, 0x25, 0x0c, 0xeb, 0xea, 0xc3, 0x57, 0x6c, 0x36, 0x11, 0xba }; uint8_t expected_extracted_handshake[] = { 0x1d, 0xc8, 0x26, 0xe9, 0x36, 0x06, 0xaa, 0x6f, 0xdc, 0x0a, 0xad, 0xc1, 0x2f, 0x74, 0x1b, 0x01, 0x04, 0x6a, 0xa6, 0xb9, 0x9f, 0x69, 0x1e, 0xd2, 0x21, 0xa9, 0xf0, 0xca, 0x04, 0x3f, 0xbe, 0xac }; uint8_t expected_client_handshake_traffic[] = { 0xb3, 0xed, 0xdb, 0x12, 0x6e, 0x06, 0x7f, 0x35, 0xa7, 0x80, 0xb3, 0xab, 0xf4, 0x5e, 0x2d, 0x8f, 0x3b, 0x1a, 0x95, 0x07, 0x38, 0xf5, 0x2e, 0x96, 0x00, 0x74, 0x6a, 0x0e, 0x27, 0xa5, 0x5a, 0x21 }; uint8_t expected_server_handshake_traffic[] = { 0xb6, 0x7b, 0x7d, 0x69, 0x0c, 0xc1, 0x6c, 0x4e, 0x75, 0xe5, 0x42, 0x13, 0xcb, 0x2d, 0x37, 0xb4, 0xe9, 0xc9, 0x12, 0xbc, 0xde, 0xd9, 0x10, 0x5d, 0x42, 0xbe, 0xfd, 0x59, 0xd3, 0x91, 0xad, 0x38 }; uint8_t expected_derived_handshake[] = { 0x43, 0xde, 0x77, 0xe0, 0xc7, 0x77, 0x13, 0x85, 0x9a, 0x94, 0x4d, 0xb9, 0xdb, 0x25, 0x90, 0xb5, 0x31, 0x90, 0xa6, 0x5b, 0x3e, 0xe2, 0xe4, 0xf1, 0x2d, 0xd7, 0xa0, 0xbb, 0x7c, 0xe2, 0x54, 0xb4 }; uint8_t expected_extracted_master[] = { 0x18, 0xdf, 0x06, 0x84, 0x3d, 0x13, 0xa0, 0x8b, 0xf2, 0xa4, 0x49, 0x84, 0x4c, 0x5f, 0x8a, 0x47, 0x80, 0x01, 0xbc, 0x4d, 0x4c, 0x62, 0x79, 0x84, 0xd5, 0xa4, 0x1d, 0xa8, 0xd0, 0x40, 0x29, 0x19 }; uint8_t expected_server_application_traffic[] = { 0xa1, 0x1a, 0xf9, 0xf0, 0x55, 0x31, 0xf8, 0x56, 0xad, 0x47, 0x11, 0x6b, 0x45, 0xa9, 0x50, 0x32, 0x82, 0x04, 0xb4, 0xf4, 0x4b, 0xfb, 0x6b, 0x3a, 0x4b, 0x4f, 0x1f, 0x3f, 0xcb, 0x63, 0x16, 0x43 }; uint8_t expected_server_application_traffic_updated[] = { 0x51, 0x92, 0x1b, 0x8a, 0xa3, 0x00, 0x19, 0x76, 0xeb, 0x40, 0x1d, 0x0a, 0x43, 0x19, 0xa8, 0x51, 0x64, 0x16, 0xa6, 0xc5, 0x60, 0x01, 0xa3, 0x57, 0xe5, 0xd1, 0x62, 0x03, 0x1e, 0x84, 0xf9, 0x16, }; uint8_t expected_client_application_traffic[] = { 0x9e, 0x40, 0x64, 0x6c, 0xe7, 0x9a, 0x7f, 0x9d, 0xc0, 0x5a, 0xf8, 0x88, 0x9b, 0xce, 0x65, 0x52, 0x87, 0x5a, 0xfa, 0x0b, 0x06, 0xdf, 0x00, 0x87, 0xf7, 0x92, 0xeb, 0xb7, 0xc1, 0x75, 0x04, 0xa5, }; uint8_t expected_client_application_traffic_updated[] = { 0xfc, 0xdf, 0xcc, 0x72, 0x72, 0x5a, 0xae, 0xe4, 0x8b, 0xf6, 0x4e, 0x4f, 0xd8, 0xb7, 0x49, 0xcd, 0xbd, 0xba, 0xb3, 0x9d, 0x90, 0xda, 0x0b, 0x26, 0xe2, 0x24, 0x5c, 0xa6, 0xea, 0x16, 0x72, 0x07, }; uint8_t expected_exporter_master[] = { 0xfe, 0x22, 0xf8, 0x81, 0x17, 0x6e, 0xda, 0x18, 0xeb, 0x8f, 0x44, 0x52, 0x9e, 0x67, 0x92, 0xc5, 0x0c, 0x9a, 0x3f, 0x89, 0x45, 0x2f, 0x68, 0xd8, 0xae, 0x31, 0x1b, 0x43, 0x09, 0xd3, 0xcf, 0x50 }; int main (int argc, char **argv) { struct tls13_secrets *secrets; if ((secrets = tls13_secrets_create(EVP_sha256(), 0)) == NULL) errx(1,"failed to create secrets\n"); secrets->insecure = 1; /* don't explicit_bzero when done */ if (tls13_derive_handshake_secrets(secrets, ecdhe, 32, &cshello_hash)) FAIL("derive_handshake_secrets worked when it shouldn't\n"); if (tls13_derive_application_secrets(secrets, &chello_hash)) FAIL("derive_application_secrets worked when it shouldn't\n"); if (!tls13_derive_early_secrets(secrets, secrets->zeros.data, secrets->zeros.len, &chello_hash)) FAIL("derive_early_secrets failed\n"); if (tls13_derive_early_secrets(secrets, secrets->zeros.data, secrets->zeros.len, &chello_hash)) FAIL("derive_early_secrets worked when it shouldn't(2)\n"); if (!tls13_derive_handshake_secrets(secrets, ecdhe, 32, &cshello_hash)) FAIL("derive_handshake_secrets failed\n"); if (tls13_derive_handshake_secrets(secrets, ecdhe, 32, &cshello_hash)) FAIL("derive_handshake_secrets worked when it shouldn't(2)\n"); /* XXX fix hash here once test vector sorted */ if (!tls13_derive_application_secrets(secrets, &csfhello_hash)) FAIL("derive_application_secrets failed\n"); if (tls13_derive_application_secrets(secrets, &csfhello_hash)) FAIL("derive_application_secrets worked when it " "shouldn't(2)\n"); fprintf(stderr, "extracted_early:\n"); compare_data(secrets->extracted_early.data, 32, expected_extracted_early, 32); if (memcmp(secrets->extracted_early.data, expected_extracted_early, 32) != 0) FAIL("extracted_early does not match\n"); fprintf(stderr, "derived_early:\n"); compare_data(secrets->derived_early.data, 32, expected_derived_early, 32); if (memcmp(secrets->derived_early.data, expected_derived_early, 32) != 0) FAIL("derived_early does not match\n"); fprintf(stderr, "extracted_handshake:\n"); compare_data(secrets->extracted_handshake.data, 32, expected_extracted_handshake, 32); if (memcmp(secrets->extracted_handshake.data, expected_extracted_handshake, 32) != 0) FAIL("extracted_handshake does not match\n"); fprintf(stderr, "client_handshake_traffic:\n"); compare_data(secrets->client_handshake_traffic.data, 32, expected_client_handshake_traffic, 32); if (memcmp(secrets->client_handshake_traffic.data, expected_client_handshake_traffic, 32) != 0) FAIL("client_handshake_traffic does not match\n"); fprintf(stderr, "server_handshake_traffic:\n"); compare_data(secrets->server_handshake_traffic.data, 32, expected_server_handshake_traffic, 32); if (memcmp(secrets->server_handshake_traffic.data, expected_server_handshake_traffic, 32) != 0) FAIL("server_handshake_traffic does not match\n"); fprintf(stderr, "derived_early:\n"); compare_data(secrets->derived_early.data, 32, expected_derived_early, 32); if (memcmp(secrets->derived_early.data, expected_derived_early, 32) != 0) FAIL("derived_early does not match\n"); fprintf(stderr, "derived_handshake:\n"); compare_data(secrets->derived_handshake.data, 32, expected_derived_handshake, 32); if (memcmp(secrets->derived_handshake.data, expected_derived_handshake, 32) != 0) FAIL("derived_handshake does not match\n"); fprintf(stderr, "extracted_master:\n"); compare_data(secrets->extracted_master.data, 32, expected_extracted_master, 32); if (memcmp(secrets->extracted_master.data, expected_extracted_master, 32) != 0) FAIL("extracted_master does not match\n"); fprintf(stderr, "server_application_traffic:\n"); compare_data(secrets->server_application_traffic.data, 32, expected_server_application_traffic, 32); if (memcmp(secrets->server_application_traffic.data, expected_server_application_traffic, 32) != 0) FAIL("server_application_traffic does not match\n"); fprintf(stderr, "client_application_traffic:\n"); compare_data(secrets->client_application_traffic.data, 32, expected_client_application_traffic, 32); if (memcmp(secrets->client_application_traffic.data, expected_client_application_traffic, 32) != 0) FAIL("server_application_traffic does not match\n"); fprintf(stderr, "exporter_master:\n"); compare_data(secrets->exporter_master.data, 32, expected_exporter_master, 32); if (memcmp(secrets->exporter_master.data, expected_exporter_master, 32) != 0) FAIL("exporter_master does not match\n"); tls13_update_server_traffic_secret(secrets); fprintf(stderr, "server_application_traffic after update:\n"); compare_data(secrets->server_application_traffic.data, 32, expected_server_application_traffic_updated, 32); if (memcmp(secrets->server_application_traffic.data, expected_server_application_traffic_updated, 32) != 0) FAIL("server_application_traffic does not match after update\n"); tls13_update_client_traffic_secret(secrets); fprintf(stderr, "client_application_traffic after update:\n"); compare_data(secrets->client_application_traffic.data, 32, expected_client_application_traffic_updated, 32); if (memcmp(secrets->client_application_traffic.data, expected_client_application_traffic_updated, 32) != 0) FAIL("client_application_traffic does not match after update\n"); tls13_secrets_destroy(secrets); return failures; }