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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef NET_QUIC_CRYPTO_CRYPTO_HANDSHAKE_H_ | |
6 #define NET_QUIC_CRYPTO_CRYPTO_HANDSHAKE_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <memory> | |
11 #include <string> | |
12 #include <vector> | |
13 | |
14 #include "base/macros.h" | |
15 #include "net/base/net_export.h" | |
16 #include "net/quic/quic_protocol.h" | |
17 | |
18 namespace net { | |
19 | |
20 class CommonCertSets; | |
21 class KeyExchange; | |
22 class QuicDecrypter; | |
23 class QuicEncrypter; | |
24 | |
25 // HandshakeFailureReason enum values are uploaded to UMA, they cannot be | |
26 // changed. | |
27 enum HandshakeFailureReason { | |
28 HANDSHAKE_OK = 0, | |
29 | |
30 // Failure reasons for an invalid client nonce in CHLO. | |
31 // | |
32 // The default error value for nonce verification failures from strike | |
33 // register (covers old strike registers and unknown failures). | |
34 CLIENT_NONCE_UNKNOWN_FAILURE = 1, | |
35 // Client nonce had incorrect length. | |
36 CLIENT_NONCE_INVALID_FAILURE = 2, | |
37 // Client nonce is not unique. | |
38 CLIENT_NONCE_NOT_UNIQUE_FAILURE = 3, | |
39 // Client orbit is invalid or incorrect. | |
40 CLIENT_NONCE_INVALID_ORBIT_FAILURE = 4, | |
41 // Client nonce's timestamp is not in the strike register's valid time range. | |
42 CLIENT_NONCE_INVALID_TIME_FAILURE = 5, | |
43 // Strike register's RPC call timed out, client nonce couldn't be verified. | |
44 CLIENT_NONCE_STRIKE_REGISTER_TIMEOUT = 6, | |
45 // Strike register is down, client nonce couldn't be verified. | |
46 CLIENT_NONCE_STRIKE_REGISTER_FAILURE = 7, | |
47 | |
48 // Failure reasons for an invalid server nonce in CHLO. | |
49 // | |
50 // Unbox of server nonce failed. | |
51 SERVER_NONCE_DECRYPTION_FAILURE = 8, | |
52 // Decrypted server nonce had incorrect length. | |
53 SERVER_NONCE_INVALID_FAILURE = 9, | |
54 // Server nonce is not unique. | |
55 SERVER_NONCE_NOT_UNIQUE_FAILURE = 10, | |
56 // Server nonce's timestamp is not in the strike register's valid time range. | |
57 SERVER_NONCE_INVALID_TIME_FAILURE = 11, | |
58 // The server requires handshake confirmation. | |
59 SERVER_NONCE_REQUIRED_FAILURE = 20, | |
60 | |
61 // Failure reasons for an invalid server config in CHLO. | |
62 // | |
63 // Missing Server config id (kSCID) tag. | |
64 SERVER_CONFIG_INCHOATE_HELLO_FAILURE = 12, | |
65 // Couldn't find the Server config id (kSCID). | |
66 SERVER_CONFIG_UNKNOWN_CONFIG_FAILURE = 13, | |
67 | |
68 // Failure reasons for an invalid source-address token. | |
69 // | |
70 // Missing Source-address token (kSourceAddressTokenTag) tag. | |
71 SOURCE_ADDRESS_TOKEN_INVALID_FAILURE = 14, | |
72 // Unbox of Source-address token failed. | |
73 SOURCE_ADDRESS_TOKEN_DECRYPTION_FAILURE = 15, | |
74 // Couldn't parse the unbox'ed Source-address token. | |
75 SOURCE_ADDRESS_TOKEN_PARSE_FAILURE = 16, | |
76 // Source-address token is for a different IP address. | |
77 SOURCE_ADDRESS_TOKEN_DIFFERENT_IP_ADDRESS_FAILURE = 17, | |
78 // The source-address token has a timestamp in the future. | |
79 SOURCE_ADDRESS_TOKEN_CLOCK_SKEW_FAILURE = 18, | |
80 // The source-address token has expired. | |
81 SOURCE_ADDRESS_TOKEN_EXPIRED_FAILURE = 19, | |
82 | |
83 // The expected leaf certificate hash could not be validated. | |
84 INVALID_EXPECTED_LEAF_CERTIFICATE = 21, | |
85 | |
86 MAX_FAILURE_REASON = 22, | |
87 }; | |
88 | |
89 // These errors will be packed into an uint32_t and we don't want to set the | |
90 // most significant bit, which may be misinterpreted as the sign bit. | |
91 static_assert(MAX_FAILURE_REASON <= 32, "failure reason out of sync"); | |
92 | |
93 // A CrypterPair contains the encrypter and decrypter for an encryption level. | |
94 struct NET_EXPORT_PRIVATE CrypterPair { | |
95 CrypterPair(); | |
96 ~CrypterPair(); | |
97 std::unique_ptr<QuicEncrypter> encrypter; | |
98 std::unique_ptr<QuicDecrypter> decrypter; | |
99 }; | |
100 | |
101 // Parameters negotiated by the crypto handshake. | |
102 struct NET_EXPORT_PRIVATE QuicCryptoNegotiatedParameters { | |
103 // Initializes the members to 0 or empty values. | |
104 QuicCryptoNegotiatedParameters(); | |
105 ~QuicCryptoNegotiatedParameters(); | |
106 | |
107 QuicTag key_exchange; | |
108 QuicTag aead; | |
109 std::string initial_premaster_secret; | |
110 std::string forward_secure_premaster_secret; | |
111 // initial_subkey_secret is used as the PRK input to the HKDF used when | |
112 // performing key extraction that needs to happen before forward-secure keys | |
113 // are available. | |
114 std::string initial_subkey_secret; | |
115 // subkey_secret is used as the PRK input to the HKDF used for key extraction. | |
116 std::string subkey_secret; | |
117 CrypterPair initial_crypters; | |
118 CrypterPair forward_secure_crypters; | |
119 // Normalized SNI: converted to lower case and trailing '.' removed. | |
120 std::string sni; | |
121 std::string client_nonce; | |
122 std::string server_nonce; | |
123 // hkdf_input_suffix contains the HKDF input following the label: the | |
124 // ConnectionId, client hello and server config. This is only populated in the | |
125 // client because only the client needs to derive the forward secure keys at a | |
126 // later time from the initial keys. | |
127 std::string hkdf_input_suffix; | |
128 // cached_certs contains the cached certificates that a client used when | |
129 // sending a client hello. | |
130 std::vector<std::string> cached_certs; | |
131 // client_key_exchange is used by clients to store the ephemeral KeyExchange | |
132 // for the connection. | |
133 std::unique_ptr<KeyExchange> client_key_exchange; | |
134 // channel_id is set by servers to a ChannelID key when the client correctly | |
135 // proves possession of the corresponding private key. It consists of 32 | |
136 // bytes of x coordinate, followed by 32 bytes of y coordinate. Both values | |
137 // are big-endian and the pair is a P-256 public key. | |
138 std::string channel_id; | |
139 QuicTag token_binding_key_param; | |
140 | |
141 // Used when generating proof signature when sending server config updates. | |
142 bool x509_ecdsa_supported; | |
143 bool x509_supported; | |
144 | |
145 // Used to generate cert chain when sending server config updates. | |
146 std::string client_common_set_hashes; | |
147 std::string client_cached_cert_hashes; | |
148 | |
149 // Default to false; set to true if the client indicates that it supports sct | |
150 // by sending CSCT tag with an empty value in client hello. | |
151 bool sct_supported_by_client; | |
152 }; | |
153 | |
154 // QuicCryptoConfig contains common configuration between clients and servers. | |
155 class NET_EXPORT_PRIVATE QuicCryptoConfig { | |
156 public: | |
157 // kInitialLabel is a constant that is used when deriving the initial | |
158 // (non-forward secure) keys for the connection in order to tie the resulting | |
159 // key to this protocol. | |
160 static const char kInitialLabel[]; | |
161 | |
162 // kCETVLabel is a constant that is used when deriving the keys for the | |
163 // encrypted tag/value block in the client hello. | |
164 static const char kCETVLabel[]; | |
165 | |
166 // kForwardSecureLabel is a constant that is used when deriving the forward | |
167 // secure keys for the connection in order to tie the resulting key to this | |
168 // protocol. | |
169 static const char kForwardSecureLabel[]; | |
170 | |
171 QuicCryptoConfig(); | |
172 ~QuicCryptoConfig(); | |
173 | |
174 // Key exchange methods. The following two members' values correspond by | |
175 // index. | |
176 QuicTagVector kexs; | |
177 // Authenticated encryption with associated data (AEAD) algorithms. | |
178 QuicTagVector aead; | |
179 | |
180 // Supported Token Binding key parameters that can be negotiated in the client | |
181 // hello. | |
182 QuicTagVector tb_key_params; | |
183 | |
184 const CommonCertSets* common_cert_sets; | |
185 | |
186 private: | |
187 DISALLOW_COPY_AND_ASSIGN(QuicCryptoConfig); | |
188 }; | |
189 | |
190 } // namespace net | |
191 | |
192 #endif // NET_QUIC_CRYPTO_CRYPTO_HANDSHAKE_H_ | |
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