blob: e2f5e88e5efd66cbfafc9f9df8b79d4415426540 [file] [log] [blame]
// 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 <stdlib.h>
#include <openssl/ssl.h>
#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"
// 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
{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
{0xccab, 0x148f}, // TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256
{0xd001, 0x146f}, // TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256
{0xd002, 0x1477}, // TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384
};
const struct {
char name[15];
} kKeyExchangeNames[21] = {
{"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
{"ECDHE_PSK"}, // 20
};
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<const CipherSuite*>(ia);
const CipherSuite* b = static_cast<const CipherSuite*>(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<const CipherSuite*>(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;
}
// Only allow ECDHE key exchanges.
switch (key_exchange) {
case 14: // ECDHE_ECDSA
case 16: // ECDHE_RSA
case 18: // CECPQ1_RSA
case 19: // CECPQ1_ECDSA
case 20: // ECDHE_PSK
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,
uint16_t cipher_suite) {
*key_exchange_str = *cipher_str = *mac_str = "???";
*is_aead = false;
int key_exchange, cipher, mac;
if (!GetCipherProperties(cipher_suite, &key_exchange, &cipher, &mac))
return;
*key_exchange_str = kKeyExchangeNames[key_exchange].name;
*cipher_str = kCipherNames[cipher].name;
if (mac == kAEADMACValue) {
*is_aead = true;
*mac_str = NULL;
} 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<uint16_t>(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 20: // ECDHE_PSK
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;
}
const char* ECCurveName(uint16_t cipher_suite, int key_exchange_info) {
int key_exchange, cipher, mac;
if (!GetCipherProperties(cipher_suite, &key_exchange, &cipher, &mac))
return nullptr;
switch (key_exchange) {
case 14: // ECDHE_ECDSA
case 16: // ECDHE_RSA
case 20: // ECDHE_PSK
break;
default:
return nullptr;
}
return SSL_get_curve_name(key_exchange_info);
}
} // namespace net