/* * TLS Cipher Suites * (C) 2004-2010 Jack Lloyd * * Released under the terms of the Botan license */ #include #include namespace Botan { /** * Convert an SSL/TLS ciphersuite to algorithm fields */ TLS_Ciphersuite_Algos CipherSuite::lookup_ciphersuite(u16bit suite) { if(suite == TLS_RSA_WITH_RC4_128_MD5) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_MD5 | TLS_ALGO_CIPHER_RC4_128); if(suite == TLS_RSA_WITH_RC4_128_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_RC4_128); if(suite == TLS_RSA_WITH_3DES_EDE_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_3DES_CBC); if(suite == TLS_RSA_WITH_AES_128_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_RSA_WITH_AES_256_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_RSA_WITH_SEED_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_SEED_CBC); if(suite == TLS_RSA_WITH_AES_128_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_RSA_WITH_AES_256_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_NOKEX | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_3DES_CBC); if(suite == TLS_DHE_DSS_WITH_AES_128_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_DHE_DSS_WITH_SEED_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_SEED_CBC); if(suite == TLS_DHE_DSS_WITH_AES_256_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_DHE_DSS_WITH_AES_128_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_DHE_DSS_WITH_AES_256_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_3DES_CBC); if(suite == TLS_DHE_RSA_WITH_AES_128_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_DHE_DSS_WITH_SEED_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_SEED_CBC); if(suite == TLS_DHE_RSA_WITH_AES_256_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_DHE_RSA_WITH_AES_128_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_DHE_RSA_WITH_AES_256_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_DH | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_ECDHE_ECDSA_WITH_RC4_128_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_RC4_128); if(suite == TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_3DES_CBC); if(suite == TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA384 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_ECDHE_RSA_WITH_RC4_128_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_RC4_128); if(suite == TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_3DES_CBC); if(suite == TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA1 | TLS_ALGO_CIPHER_AES256_CBC); if(suite == TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA256 | TLS_ALGO_CIPHER_AES128_CBC); if(suite == TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA | TLS_ALGO_KEYEXCH_ECDH | TLS_ALGO_MAC_SHA384 | TLS_ALGO_CIPHER_AES256_CBC); return TLS_Ciphersuite_Algos(0); } namespace { std::pair cipher_code_to_name(TLS_Ciphersuite_Algos algo) { if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_RC4_128) return std::make_pair("RC4", 128); if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_3DES_CBC) return std::make_pair("3DES", 24); if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_AES128_CBC) return std::make_pair("AES-128", 16); if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_AES256_CBC) return std::make_pair("AES-256", 32); if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_SEED_CBC) return std::make_pair("SEED", 16); throw TLS_Exception(INTERNAL_ERROR, "CipherSuite: Unknown cipher type " + std::to_string(algo)); } std::string mac_code_to_name(TLS_Ciphersuite_Algos algo) { if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_MD5) return "MD5"; if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_SHA1) return "SHA-1"; if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_SHA256) return "SHA-256"; if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_SHA384) return "SHA-384"; throw TLS_Exception(INTERNAL_ERROR, "CipherSuite: Unknown MAC type " + std::to_string(algo)); } } /** * CipherSuite Constructor */ CipherSuite::CipherSuite(u16bit suite_code) { if(suite_code == 0) return; TLS_Ciphersuite_Algos algos = lookup_ciphersuite(suite_code); if(algos == 0) throw Invalid_Argument("Unknown ciphersuite: " + std::to_string(suite_code)); sig_algo = TLS_Ciphersuite_Algos(algos & TLS_ALGO_SIGNER_MASK); kex_algo = TLS_Ciphersuite_Algos(algos & TLS_ALGO_KEYEXCH_MASK); std::pair cipher_info = cipher_code_to_name(algos); cipher = cipher_info.first; cipher_key_length = cipher_info.second; mac = mac_code_to_name(algos); } }