// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "net/ssl/ssl_cipher_suite_names.h" #include #include "base/logging.h" #include "base/strings/string_number_conversions.h" #include "base/strings/string_util.h" #include "net/ssl/ssl_connection_status_flags.h" #include "third_party/boringssl/src/include/openssl/ssl.h" // Rather than storing the names of all the ciphersuites we eliminate the // redundancy and break each cipher suite into a key exchange method, cipher // and mac. For all the ciphersuites in the IANA registry, we extract each of // those components from the name, number them and pack the result into a // 16-bit number thus: // (MSB to LSB) // <3 bits> unused // <5 bits> key exchange // <5 bits> cipher // <3 bits> mac // The following tables were generated by ssl_cipher_suite_names_generate.go, // found in the same directory as this file. namespace { struct CipherSuite { uint16_t cipher_suite, encoded; }; const struct CipherSuite kCipherSuites[] = { {0x0, 0x0}, // TLS_NULL_WITH_NULL_NULL {0x1, 0x101}, // TLS_RSA_WITH_NULL_MD5 {0x2, 0x102}, // TLS_RSA_WITH_NULL_SHA {0x3, 0x209}, // TLS_RSA_EXPORT_WITH_RC4_40_MD5 {0x4, 0x111}, // TLS_RSA_WITH_RC4_128_MD5 {0x5, 0x112}, // TLS_RSA_WITH_RC4_128_SHA {0x6, 0x219}, // TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 {0x7, 0x122}, // TLS_RSA_WITH_IDEA_CBC_SHA {0x8, 0x22a}, // TLS_RSA_EXPORT_WITH_DES40_CBC_SHA {0x9, 0x132}, // TLS_RSA_WITH_DES_CBC_SHA {0xa, 0x13a}, // TLS_RSA_WITH_3DES_EDE_CBC_SHA {0xb, 0x32a}, // TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA {0xc, 0x432}, // TLS_DH_DSS_WITH_DES_CBC_SHA {0xd, 0x43a}, // TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA {0xe, 0x52a}, // TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA {0xf, 0x632}, // TLS_DH_RSA_WITH_DES_CBC_SHA {0x10, 0x63a}, // TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA {0x11, 0x72a}, // TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA {0x12, 0x832}, // TLS_DHE_DSS_WITH_DES_CBC_SHA {0x13, 0x83a}, // TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA {0x14, 0x92a}, // TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA {0x15, 0xa32}, // TLS_DHE_RSA_WITH_DES_CBC_SHA {0x16, 0xa3a}, // TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA {0x17, 0xb09}, // TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 {0x18, 0xc11}, // TLS_DH_anon_WITH_RC4_128_MD5 {0x19, 0xb2a}, // TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA {0x1a, 0xc32}, // TLS_DH_anon_WITH_DES_CBC_SHA {0x1b, 0xc3a}, // TLS_DH_anon_WITH_3DES_EDE_CBC_SHA {0x2f, 0x142}, // TLS_RSA_WITH_AES_128_CBC_SHA {0x30, 0x442}, // TLS_DH_DSS_WITH_AES_128_CBC_SHA {0x31, 0x642}, // TLS_DH_RSA_WITH_AES_128_CBC_SHA {0x32, 0x842}, // TLS_DHE_DSS_WITH_AES_128_CBC_SHA {0x33, 0xa42}, // TLS_DHE_RSA_WITH_AES_128_CBC_SHA {0x34, 0xc42}, // TLS_DH_anon_WITH_AES_128_CBC_SHA {0x35, 0x14a}, // TLS_RSA_WITH_AES_256_CBC_SHA {0x36, 0x44a}, // TLS_DH_DSS_WITH_AES_256_CBC_SHA {0x37, 0x64a}, // TLS_DH_RSA_WITH_AES_256_CBC_SHA {0x38, 0x84a}, // TLS_DHE_DSS_WITH_AES_256_CBC_SHA {0x39, 0xa4a}, // TLS_DHE_RSA_WITH_AES_256_CBC_SHA {0x3a, 0xc4a}, // TLS_DH_anon_WITH_AES_256_CBC_SHA {0x3b, 0x103}, // TLS_RSA_WITH_NULL_SHA256 {0x3c, 0x143}, // TLS_RSA_WITH_AES_128_CBC_SHA256 {0x3d, 0x14b}, // TLS_RSA_WITH_AES_256_CBC_SHA256 {0x3e, 0x443}, // TLS_DH_DSS_WITH_AES_128_CBC_SHA256 {0x3f, 0x643}, // TLS_DH_RSA_WITH_AES_128_CBC_SHA256 {0x40, 0x843}, // TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 {0x41, 0x152}, // TLS_RSA_WITH_CAMELLIA_128_CBC_SHA {0x42, 0x452}, // TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA {0x43, 0x652}, // TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA {0x44, 0x852}, // TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA {0x45, 0xa52}, // TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA {0x46, 0xc52}, // TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA {0x67, 0xa43}, // TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 {0x68, 0x44b}, // TLS_DH_DSS_WITH_AES_256_CBC_SHA256 {0x69, 0x64b}, // TLS_DH_RSA_WITH_AES_256_CBC_SHA256 {0x6a, 0x84b}, // TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 {0x6b, 0xa4b}, // TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 {0x6c, 0xc43}, // TLS_DH_anon_WITH_AES_128_CBC_SHA256 {0x6d, 0xc4b}, // TLS_DH_anon_WITH_AES_256_CBC_SHA256 {0x84, 0x15a}, // TLS_RSA_WITH_CAMELLIA_256_CBC_SHA {0x85, 0x45a}, // TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA {0x86, 0x65a}, // TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA {0x87, 0x85a}, // TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA {0x88, 0xa5a}, // TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA {0x89, 0xc5a}, // TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA {0x96, 0x162}, // TLS_RSA_WITH_SEED_CBC_SHA {0x97, 0x462}, // TLS_DH_DSS_WITH_SEED_CBC_SHA {0x98, 0x662}, // TLS_DH_RSA_WITH_SEED_CBC_SHA {0x99, 0x862}, // TLS_DHE_DSS_WITH_SEED_CBC_SHA {0x9a, 0xa62}, // TLS_DHE_RSA_WITH_SEED_CBC_SHA {0x9b, 0xc62}, // TLS_DH_anon_WITH_SEED_CBC_SHA {0x9c, 0x16f}, // TLS_RSA_WITH_AES_128_GCM_SHA256 {0x9d, 0x177}, // TLS_RSA_WITH_AES_256_GCM_SHA384 {0x9e, 0xa6f}, // TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 {0x9f, 0xa77}, // TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 {0xa0, 0x66f}, // TLS_DH_RSA_WITH_AES_128_GCM_SHA256 {0xa1, 0x677}, // TLS_DH_RSA_WITH_AES_256_GCM_SHA384 {0xa2, 0x86f}, // TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 {0xa3, 0x877}, // TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 {0xa4, 0x46f}, // TLS_DH_DSS_WITH_AES_128_GCM_SHA256 {0xa5, 0x477}, // TLS_DH_DSS_WITH_AES_256_GCM_SHA384 {0xa6, 0xc6f}, // TLS_DH_anon_WITH_AES_128_GCM_SHA256 {0xa7, 0xc77}, // TLS_DH_anon_WITH_AES_256_GCM_SHA384 {0xba, 0x153}, // TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256 {0xbb, 0x453}, // TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA256 {0xbc, 0x653}, // TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA256 {0xbd, 0x853}, // TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256 {0xbe, 0xa53}, // TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 {0xbf, 0xc53}, // TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA256 {0xc0, 0x15b}, // TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256 {0xc1, 0x45b}, // TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA256 {0xc2, 0x65b}, // TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA256 {0xc3, 0x85b}, // TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256 {0xc4, 0xa5b}, // TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256 {0xc5, 0xc5b}, // TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256 {0x1301, 0x1f6f}, // TLS_AES_128_GCM_SHA256 {0x1302, 0x1f77}, // TLS_AES_256_GCM_SHA384 {0x1303, 0x1f8f}, // TLS_CHACHA20_POLY1305_SHA256 {0x16b7, 0x128f}, // TLS_CECPQ1_RSA_WITH_CHACHA20_POLY1305_SHA256 (exper) {0x16b8, 0x138f}, // TLS_CECPQ1_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (exper) {0x16b9, 0x1277}, // TLS_CECPQ1_RSA_WITH_AES_256_GCM_SHA384 (exper) {0x16ba, 0x1377}, // TLS_CECPQ1_ECDSA_WITH_AES_256_GCM_SHA384 (exper) {0xc001, 0xd02}, // TLS_ECDH_ECDSA_WITH_NULL_SHA {0xc002, 0xd12}, // TLS_ECDH_ECDSA_WITH_RC4_128_SHA {0xc003, 0xd3a}, // TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA {0xc004, 0xd42}, // TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA {0xc005, 0xd4a}, // TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA {0xc006, 0xe02}, // TLS_ECDHE_ECDSA_WITH_NULL_SHA {0xc007, 0xe12}, // TLS_ECDHE_ECDSA_WITH_RC4_128_SHA {0xc008, 0xe3a}, // TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA {0xc009, 0xe42}, // TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA {0xc00a, 0xe4a}, // TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA {0xc00b, 0xf02}, // TLS_ECDH_RSA_WITH_NULL_SHA {0xc00c, 0xf12}, // TLS_ECDH_RSA_WITH_RC4_128_SHA {0xc00d, 0xf3a}, // TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA {0xc00e, 0xf42}, // TLS_ECDH_RSA_WITH_AES_128_CBC_SHA {0xc00f, 0xf4a}, // TLS_ECDH_RSA_WITH_AES_256_CBC_SHA {0xc010, 0x1002}, // TLS_ECDHE_RSA_WITH_NULL_SHA {0xc011, 0x1012}, // TLS_ECDHE_RSA_WITH_RC4_128_SHA {0xc012, 0x103a}, // TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA {0xc013, 0x1042}, // TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA {0xc014, 0x104a}, // TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA {0xc015, 0x1102}, // TLS_ECDH_anon_WITH_NULL_SHA {0xc016, 0x1112}, // TLS_ECDH_anon_WITH_RC4_128_SHA {0xc017, 0x113a}, // TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA {0xc018, 0x1142}, // TLS_ECDH_anon_WITH_AES_128_CBC_SHA {0xc019, 0x114a}, // TLS_ECDH_anon_WITH_AES_256_CBC_SHA {0xc023, 0xe43}, // TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 {0xc024, 0xe4c}, // TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 {0xc025, 0xd43}, // TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 {0xc026, 0xd4c}, // TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384 {0xc027, 0x1043}, // TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 {0xc028, 0x104c}, // TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 {0xc029, 0xf43}, // TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 {0xc02a, 0xf4c}, // TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384 {0xc02b, 0xe6f}, // TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 {0xc02c, 0xe77}, // TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 {0xc02d, 0xd6f}, // TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 {0xc02e, 0xd77}, // TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 {0xc02f, 0x106f}, // TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 {0xc030, 0x1077}, // TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 {0xc031, 0xf6f}, // TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256 {0xc032, 0xf77}, // TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384 {0xc072, 0xe53}, // TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 {0xc073, 0xe5c}, // TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 {0xc074, 0xd53}, // TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 {0xc075, 0xd5c}, // TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 {0xc076, 0x1053}, // TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 {0xc077, 0x105c}, // TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384 {0xc078, 0xf53}, // TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256 {0xc079, 0xf5c}, // TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384 {0xc07a, 0x17f}, // TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc07b, 0x187}, // TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384 {0xc07c, 0xa7f}, // TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc07d, 0xa87}, // TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 {0xc07e, 0x67f}, // TLS_DH_RSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc07f, 0x687}, // TLS_DH_RSA_WITH_CAMELLIA_256_GCM_SHA384 {0xc080, 0x87f}, // TLS_DHE_DSS_WITH_CAMELLIA_128_GCM_SHA256 {0xc081, 0x887}, // TLS_DHE_DSS_WITH_CAMELLIA_256_GCM_SHA384 {0xc082, 0x47f}, // TLS_DH_DSS_WITH_CAMELLIA_128_GCM_SHA256 {0xc083, 0x487}, // TLS_DH_DSS_WITH_CAMELLIA_256_GCM_SHA384 {0xc084, 0xc7f}, // TLS_DH_anon_WITH_CAMELLIA_128_GCM_SHA256 {0xc085, 0xc87}, // TLS_DH_anon_WITH_CAMELLIA_256_GCM_SHA384 {0xc086, 0xe7f}, // TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc087, 0xe87}, // TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 {0xc088, 0xd7f}, // TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc089, 0xd87}, // TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 {0xc08a, 0x107f}, // TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc08b, 0x1087}, // TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 {0xc08c, 0xf7f}, // TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256 {0xc08d, 0xf87}, // TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384 {0xcc13, 0x108f}, // TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305 (non-standard) {0xcc14, 0x0e8f}, // TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 (non-standard) {0xcca8, 0x108f}, // TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 {0xcca9, 0x0e8f}, // TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 }; const struct { char name[15]; } kKeyExchangeNames[20] = { {"NULL"}, // 0 {"RSA"}, // 1 {"RSA_EXPORT"}, // 2 {"DH_DSS_EXPORT"}, // 3 {"DH_DSS"}, // 4 {"DH_RSA_EXPORT"}, // 5 {"DH_RSA"}, // 6 {"DHE_DSS_EXPORT"}, // 7 {"DHE_DSS"}, // 8 {"DHE_RSA_EXPORT"}, // 9 {"DHE_RSA"}, // 10 {"DH_anon_EXPORT"}, // 11 {"DH_anon"}, // 12 {"ECDH_ECDSA"}, // 13 {"ECDHE_ECDSA"}, // 14 {"ECDH_RSA"}, // 15 {"ECDHE_RSA"}, // 16 {"ECDH_anon"}, // 17 {"CECPQ1_RSA"}, // 18 {"CECPQ1_ECDSA"}, // 19 // 31 is reserved to indicate a TLS 1.3 AEAD-only suite. }; constexpr int kTLS13KeyExchangeValue = 31; const struct { char name[18]; } kCipherNames[18] = { {"NULL"}, // 0 {"RC4_40"}, // 1 {"RC4_128"}, // 2 {"RC2_CBC_40"}, // 3 {"IDEA_CBC"}, // 4 {"DES40_CBC"}, // 5 {"DES_CBC"}, // 6 {"3DES_EDE_CBC"}, // 7 {"AES_128_CBC"}, // 8 {"AES_256_CBC"}, // 9 {"CAMELLIA_128_CBC"}, // 10 {"CAMELLIA_256_CBC"}, // 11 {"SEED_CBC"}, // 12 {"AES_128_GCM"}, // 13 {"AES_256_GCM"}, // 14 {"CAMELLIA_128_GCM"}, // 15 {"CAMELLIA_256_GCM"}, // 16 {"CHACHA20_POLY1305"}, // 17 }; const struct { char name[12]; } kMacNames[5] = { {"NULL"}, // 0 {"HMAC-MD5"}, // 1 {"HMAC-SHA1"}, // 2 {"HMAC-SHA256"}, // 3 {"HMAC-SHA384"}, // 4 // 7 is reserved to indicate an AEAD cipher suite. }; const int kAEADMACValue = 7; int CipherSuiteCmp(const void* ia, const void* ib) { const CipherSuite* a = static_cast(ia); const CipherSuite* b = static_cast(ib); if (a->cipher_suite < b->cipher_suite) { return -1; } else if (a->cipher_suite == b->cipher_suite) { return 0; } else { return 1; } } bool GetCipherProperties(uint16_t cipher_suite, int* out_key_exchange, int* out_cipher, int* out_mac) { CipherSuite desired = {0}; desired.cipher_suite = cipher_suite; void* r = bsearch(&desired, kCipherSuites, arraysize(kCipherSuites), sizeof(kCipherSuites[0]), CipherSuiteCmp); if (!r) return false; const CipherSuite* cs = static_cast(r); *out_key_exchange = cs->encoded >> 8; *out_cipher = (cs->encoded >> 3) & 0x1f; *out_mac = cs->encoded & 0x7; return true; } int ObsoleteSSLStatusForProtocol(int ssl_version) { int obsolete_ssl = net::OBSOLETE_SSL_NONE; if (ssl_version < net::SSL_CONNECTION_VERSION_TLS1_2) obsolete_ssl |= net::OBSOLETE_SSL_MASK_PROTOCOL; return obsolete_ssl; } int ObsoleteSSLStatusForCipherSuite(uint16_t cipher_suite) { int obsolete_ssl = net::OBSOLETE_SSL_NONE; int key_exchange, cipher, mac; if (!GetCipherProperties(cipher_suite, &key_exchange, &cipher, &mac)) { // Cannot determine/unknown cipher suite. Err on the side of caution. obsolete_ssl |= net::OBSOLETE_SSL_MASK_KEY_EXCHANGE; obsolete_ssl |= net::OBSOLETE_SSL_MASK_CIPHER; return obsolete_ssl; } switch (key_exchange) { case 14: // ECDHE_ECDSA case 16: // ECDHE_RSA case 18: // CECPQ1_RSA case 19: // CECPQ1_ECDSA case kTLS13KeyExchangeValue: // TLS 1.3 break; default: obsolete_ssl |= net::OBSOLETE_SSL_MASK_KEY_EXCHANGE; } switch (cipher) { case 13: // AES_128_GCM case 14: // AES_256_GCM case 17: // CHACHA20_POLY1305 break; default: obsolete_ssl |= net::OBSOLETE_SSL_MASK_CIPHER; } // Only AEADs allowed. if (mac != kAEADMACValue) obsolete_ssl |= net::OBSOLETE_SSL_MASK_CIPHER; return obsolete_ssl; } } // namespace namespace net { void SSLCipherSuiteToStrings(const char** key_exchange_str, const char** cipher_str, const char** mac_str, bool* is_aead, bool* is_tls13, uint16_t cipher_suite) { *key_exchange_str = *cipher_str = *mac_str = "???"; *is_aead = false; *is_tls13 = false; int key_exchange, cipher, mac; if (!GetCipherProperties(cipher_suite, &key_exchange, &cipher, &mac)) return; if (key_exchange == kTLS13KeyExchangeValue) { *key_exchange_str = nullptr; *is_tls13 = true; } else { *key_exchange_str = kKeyExchangeNames[key_exchange].name; } *cipher_str = kCipherNames[cipher].name; if (mac == kAEADMACValue) { *is_aead = true; *mac_str = nullptr; } else { *mac_str = kMacNames[mac].name; } } void SSLVersionToString(const char** name, int ssl_version) { switch (ssl_version) { case SSL_CONNECTION_VERSION_SSL2: *name = "SSL 2.0"; break; case SSL_CONNECTION_VERSION_SSL3: *name = "SSL 3.0"; break; case SSL_CONNECTION_VERSION_TLS1: *name = "TLS 1.0"; break; case SSL_CONNECTION_VERSION_TLS1_1: *name = "TLS 1.1"; break; case SSL_CONNECTION_VERSION_TLS1_2: *name = "TLS 1.2"; break; case SSL_CONNECTION_VERSION_TLS1_3: *name = "TLS 1.3"; break; case SSL_CONNECTION_VERSION_QUIC: *name = "QUIC"; break; default: NOTREACHED() << ssl_version; *name = "???"; break; } } bool ParseSSLCipherString(const std::string& cipher_string, uint16_t* cipher_suite) { int value = 0; if (cipher_string.size() == 6 && base::StartsWith(cipher_string, "0x", base::CompareCase::INSENSITIVE_ASCII) && base::HexStringToInt(cipher_string, &value)) { *cipher_suite = static_cast(value); return true; } return false; } int ObsoleteSSLStatus(int connection_status) { int obsolete_ssl = OBSOLETE_SSL_NONE; int ssl_version = SSLConnectionStatusToVersion(connection_status); obsolete_ssl |= ObsoleteSSLStatusForProtocol(ssl_version); uint16_t cipher_suite = SSLConnectionStatusToCipherSuite(connection_status); obsolete_ssl |= ObsoleteSSLStatusForCipherSuite(cipher_suite); return obsolete_ssl; } bool IsTLSCipherSuiteAllowedByHTTP2(uint16_t cipher_suite) { int key_exchange, cipher, mac; if (!GetCipherProperties(cipher_suite, &key_exchange, &cipher, &mac)) return false; // Only allow forward secure key exchanges. switch (key_exchange) { case 10: // DHE_RSA case 14: // ECDHE_ECDSA case 16: // ECDHE_RSA case 18: // CECPQ1_RSA case 19: // CECPQ1_ECDSA case kTLS13KeyExchangeValue: // TLS 1.3 break; default: return false; } switch (cipher) { case 13: // AES_128_GCM case 14: // AES_256_GCM case 17: // CHACHA20_POLY1305 break; default: return false; } // Only AEADs allowed. if (mac != kAEADMACValue) return false; return true; } } // namespace net