1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#pragma once
#include "crypto/s2n_hash.h"
/* Codes from http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-5 */
#define TLS_NULL_WITH_NULL_NULL 0x00, 0x00
#define TLS_RSA_WITH_AES_256_CBC_SHA256 0x00, 0x3D
#define TLS_RSA_WITH_AES_256_CBC_SHA 0x00, 0x35
#define TLS_RSA_WITH_AES_128_CBC_SHA256 0x00, 0x3C
#define TLS_RSA_WITH_AES_128_CBC_SHA 0x00, 0x2F
#define TLS_RSA_WITH_3DES_EDE_CBC_SHA 0x00, 0x0A
#define TLS_RSA_WITH_RC4_128_MD5 0x00, 0x04
#define TLS_RSA_WITH_RC4_128_SHA 0x00, 0x05
#define TLS_DHE_RSA_WITH_AES_128_CBC_SHA 0x00, 0x33
#define TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 0x00, 0x67
#define TLS_DHE_RSA_WITH_AES_256_CBC_SHA 0x00, 0x39
#define TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 0x00, 0x6B
#define TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA 0x00, 0x16
#define TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA 0xC0, 0x09
#define TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 0xC0, 0x23
#define TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA 0xC0, 0x0A
#define TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 0xC0, 0x24
#define TLS_ECDHE_RSA_WITH_RC4_128_SHA 0xC0, 0x11
#define TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA 0xC0, 0x13
#define TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 0xC0, 0x27
#define TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 0xC0, 0x14
#define TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 0xC0, 0x28
#define TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA 0xC0, 0x12
#define TLS_RSA_WITH_AES_128_GCM_SHA256 0x00, 0x9C
#define TLS_RSA_WITH_AES_256_GCM_SHA384 0x00, 0x9D
#define TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 0x00, 0x9E
#define TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 0x00, 0x9F
#define TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 0xC0, 0x2B
#define TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 0xC0, 0x2C
#define TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 0xC0, 0x2F
#define TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 0xC0, 0x30
#define TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0xCC, 0xA8
#define TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 0xCC, 0xA9
#define TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0xCC, 0xAA
/* TLS 1.2 hybrid post-quantum definitions from https://tools.ietf.org/html/draft-campagna-tls-bike-sike-hybrid */
#define TLS_ECDHE_BIKE_RSA_WITH_AES_256_GCM_SHA384 0xFF, 0x04
#define TLS_ECDHE_SIKE_RSA_WITH_AES_256_GCM_SHA384 0xFF, 0x08
#define TLS_ECDHE_KYBER_RSA_WITH_AES_256_GCM_SHA384 0xFF, 0x0C
#define TLS_EXTENSION_PQ_KEM_PARAMETERS 0xFE01
#define TLS_PQ_KEM_EXTENSION_ID_BIKE1_L1_R1 1
#define TLS_PQ_KEM_EXTENSION_ID_BIKE1_L1_R2 13
#define TLS_PQ_KEM_EXTENSION_ID_SIKE_P503_R1 10
#define TLS_PQ_KEM_EXTENSION_ID_SIKE_P434_R2 19
#define TLS_PQ_KEM_EXTENSION_ID_KYBER_512_R2 23
#define TLS_PQ_KEM_EXTENSION_ID_KYBER_512_90S_R2 24
/* TLS 1.3 hybrid post-quantum definitions are from the proposed reserved range defined
* in https://tools.ietf.org/html/draft-stebila-tls-hybrid-design. Values for interoperability
* are defined in https://docs.google.com/spreadsheets/d/12YarzaNv3XQNLnvDsWLlRKwtZFhRrDdWf36YlzwrPeg/edit#gid=0. */
#define TLS_PQ_KEM_GROUP_ID_X25519_SIKE_P434_R2 0x2F27
#define TLS_PQ_KEM_GROUP_ID_SECP256R1_SIKE_P434_R2 0x2F1F
#define TLS_PQ_KEM_GROUP_ID_X25519_BIKE1_L1_R2 0x2F28
#define TLS_PQ_KEM_GROUP_ID_SECP256R1_BIKE1_L1_R2 0x2F23
#define TLS_PQ_KEM_GROUP_ID_X25519_KYBER_512_R2 0x2F26
#define TLS_PQ_KEM_GROUP_ID_SECP256R1_KYBER_512_R2 0x2F0F
/* From https://tools.ietf.org/html/rfc7507 */
#define TLS_FALLBACK_SCSV 0x56, 0x00
#define TLS_EMPTY_RENEGOTIATION_INFO_SCSV 0x00, 0xff
/* TLS 1.3 cipher suites from https://tools.ietf.org/html/rfc8446#appendix-B.4 */
#define TLS_AES_128_GCM_SHA256 0x13, 0x01
#define TLS_AES_256_GCM_SHA384 0x13, 0x02
#define TLS_CHACHA20_POLY1305_SHA256 0x13, 0x03
#define TLS_AES_128_CCM_SHA256 0x13, 0x04
#define TLS_AES_128_CCM_8_SHA256 0x13, 0x05
/* TLS extensions from https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml */
#define TLS_EXTENSION_SERVER_NAME 0
#define TLS_EXTENSION_MAX_FRAG_LEN 1
#define TLS_EXTENSION_STATUS_REQUEST 5
#define TLS_EXTENSION_SUPPORTED_GROUPS 10
#define TLS_EXTENSION_EC_POINT_FORMATS 11
#define TLS_EXTENSION_SIGNATURE_ALGORITHMS 13
#define TLS_EXTENSION_ALPN 16
#define TLS_EXTENSION_SCT_LIST 18
#define TLS_EXTENSION_SESSION_TICKET 35
#define TLS_EXTENSION_PRE_SHARED_KEY 41
#define TLS_EXTENSION_CERT_AUTHORITIES 47
#define TLS_EXTENSION_RENEGOTIATION_INFO 65281
/* TLS 1.3 extensions from https://tools.ietf.org/html/rfc8446#section-4.2 */
#define TLS_EXTENSION_SUPPORTED_VERSIONS 43
#define TLS_EXTENSION_COOKIE 44
#define TLS_EXTENSION_PSK_KEY_EXCHANGE_MODES 45
#define TLS_EXTENSION_KEY_SHARE 51
/* TLS 1.3 pre-shared key exchange modes from https://tools.ietf.org/html/rfc8446#section-4.2.9 */
#define TLS_PSK_KE_MODE 0
#define TLS_PSK_DHE_KE_MODE 1
/**
*= https://tools.ietf.org/id/draft-ietf-quic-tls-32.txt#8.2
*# enum {
*# quic_transport_parameters(0xffa5), (65535)
*# } ExtensionType;
*/
#define TLS_QUIC_TRANSPORT_PARAMETERS 0xffa5
/* TLS Signature Algorithms - RFC 5246 7.4.1.4.1 */
/* https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-16 */
#define TLS_SIGNATURE_ALGORITHM_ANONYMOUS 0
#define TLS_SIGNATURE_ALGORITHM_RSA 1
#define TLS_SIGNATURE_ALGORITHM_DSA 2
#define TLS_SIGNATURE_ALGORITHM_ECDSA 3
#define TLS_SIGNATURE_ALGORITHM_PRIVATE 224
#define TLS_SIGNATURE_ALGORITHM_COUNT 4
/* TLS Hash Algorithm - https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1 */
/* https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-18 */
#define TLS_HASH_ALGORITHM_ANONYMOUS 0
#define TLS_HASH_ALGORITHM_MD5 1
#define TLS_HASH_ALGORITHM_SHA1 2
#define TLS_HASH_ALGORITHM_SHA224 3
#define TLS_HASH_ALGORITHM_SHA256 4
#define TLS_HASH_ALGORITHM_SHA384 5
#define TLS_HASH_ALGORITHM_SHA512 6
#define TLS_HASH_ALGORITHM_COUNT 7
/* TLS SignatureScheme (Backwards compatible with SigHash and SigAlg values above) */
/* Defined here: https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-signaturescheme */
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA1 0x0201
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA224 0x0301
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA256 0x0401
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA384 0x0501
#define TLS_SIGNATURE_SCHEME_RSA_PKCS1_SHA512 0x0601
/* In TLS 1.0 and 1.1 the hard-coded default scheme was RSA_PKCS1_MD5_SHA1, but there's no IANA defined backwards
* compatible value for that Scheme for TLS 1.2 and 1.3. So we define an internal value in the private range that won't
* match anything in the valid range so that all TLS Versions can use the same SignatureScheme negotiation abstraction
* layer. This scheme isn't in any preference list, so it can't be negotiated even if a client sent it in its pref list. */
#define TLS_SIGNATURE_SCHEME_PRIVATE_INTERNAL_RSA_PKCS1_MD5_SHA1 0xFFFF
/* TLS 1.2 Backwards Compatible ECDSA Schemes */
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA1 0x0203
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA224 0x0303
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA256 0x0403
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA384 0x0503
#define TLS_SIGNATURE_SCHEME_ECDSA_SHA512 0x0603
/* TLS 1.3 ECDSA Signature Schemes */
#define TLS_SIGNATURE_SCHEME_ECDSA_SECP256R1_SHA256 0x0403
#define TLS_SIGNATURE_SCHEME_ECDSA_SECP384R1_SHA384 0x0503
#define TLS_SIGNATURE_SCHEME_ECDSA_SECP521R1_SHA512 0x0603
#define TLS_SIGNATURE_SCHEME_RSA_PSS_RSAE_SHA256 0x0804
#define TLS_SIGNATURE_SCHEME_RSA_PSS_RSAE_SHA384 0x0805
#define TLS_SIGNATURE_SCHEME_RSA_PSS_RSAE_SHA512 0x0806
#define TLS_SIGNATURE_SCHEME_ED25519 0x0807
#define TLS_SIGNATURE_SCHEME_ED448 0x0808
#define TLS_SIGNATURE_SCHEME_RSA_PSS_PSS_SHA256 0x0809
#define TLS_SIGNATURE_SCHEME_RSA_PSS_PSS_SHA384 0x080A
#define TLS_SIGNATURE_SCHEME_RSA_PSS_PSS_SHA512 0x080B
#define TLS_SIGNATURE_SCHEME_LEN 2
#define TLS_SIGNATURE_SCHEME_LIST_MAX_LEN 64
/* The TLS record types we support */
#define SSLv2_CLIENT_HELLO 1
#define TLS_CHANGE_CIPHER_SPEC 20
#define TLS_ALERT 21
#define TLS_HANDSHAKE 22
#define TLS_APPLICATION_DATA 23
/* Elliptic curve formats from http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-9
* Only uncompressed is supported.
*/
#define TLS_EC_FORMAT_UNCOMPRESSED 0
#define TLS_EC_FORMAT_ANSIX962_COMPRESSED_PRIME 1
#define TLS_EC_FORMAT_ANSIX962_COMPRESSED_CHAR2 2
/* Elliptic curves from https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-8 */
#define TLS_EC_CURVE_SECP_256_R1 23
#define TLS_EC_CURVE_SECP_384_R1 24
#define TLS_EC_CURVE_SECP_521_R1 25
#define TLS_EC_CURVE_ECDH_X25519 29
/* Ethernet maximum transmission unit (MTU)
* MTU is usually associated with the Ethernet protocol,
* where a 1500-byte packet is the largest allowed in it
*/
#define ETH_MTU 1500
#define IP_V4_HEADER_LENGTH 20
#define IP_V6_HEADER_LENGTH 40
#define TCP_HEADER_LENGTH 20
#define TCP_OPTIONS_LENGTH 40
/* The maximum size of a TLS record is 16389 bytes. This is; 1 byte for content
* type, 2 bytes for the protocol version, 2 bytes for the length field,
* and then up to 2^14 for the encrypted+compressed payload data.
*/
#define S2N_TLS_RECORD_HEADER_LENGTH 5
#define S2N_TLS_MAXIMUM_FRAGMENT_LENGTH 16384
/* Maximum TLS record length allows for 2048 octets of compression expansion and padding */
#define S2N_TLS_MAXIMUM_RECORD_LENGTH (S2N_TLS_MAXIMUM_FRAGMENT_LENGTH + S2N_TLS_RECORD_HEADER_LENGTH + 2048)
#define S2N_TLS_MAX_FRAG_LEN_EXT_NONE 0
/* TLS1.3 has a max fragment length of 2^14 + 1 byte for the content type */
#define S2N_TLS13_MAXIMUM_FRAGMENT_LENGTH 16385
/* Max encryption overhead is 255 for AEAD padding */
#define S2N_TLS13_MAXIMUM_RECORD_LENGTH (S2N_TLS13_MAXIMUM_FRAGMENT_LENGTH + S2N_TLS_RECORD_HEADER_LENGTH + 255)
/* The maximum size of an SSL2 message is 2^14 - 1, as neither of the first two
* bits in the length field are usable. Per;
* http://www-archive.mozilla.org/projects/security/pki/nss/ssl/draft02.html
* section 1.1
*/
#define S2N_SSL2_RECORD_HEADER_LENGTH 2
#define S2N_SSL2_MAXIMUM_MESSAGE_LENGTH 16383
#define S2N_SSL2_MAXIMUM_RECORD_LENGTH (S2N_SSL2_MAXIMUM_MESSAGE_LENGTH + S2N_SSL2_RECORD_HEADER_LENGTH)
/* s2n can use a "small" record length that is aligned to the dominant internet MTU;
* 1500 bytes, minus 20 bytes for an IP header, minus 20 bytes for a tcp
* header and 20 bytes for tcp/ip options (timestamp, sack etc) and a "large" record
* length that is designed to maximize throughput (fewer MACs per byte transferred
* and better efficiency of crypto engines).
*/
#define S2N_SMALL_RECORD_LENGTH (1500 - 20 - 20 - 20)
#define S2N_SMALL_FRAGMENT_LENGTH (S2N_SMALL_RECORD_LENGTH - S2N_TLS_RECORD_HEADER_LENGTH)
/* Testing in the wild has found 8k max record sizes give a good balance of low latency
* and throughput.
*/
#define S2N_DEFAULT_RECORD_LENGTH 8092
#define S2N_DEFAULT_FRAGMENT_LENGTH (S2N_DEFAULT_RECORD_LENGTH - S2N_TLS_RECORD_HEADER_LENGTH)
/* S2N_LARGE_RECORD_LENGTH is used for initializing output buffers, we use the largest
* possible value of all supported protocols to avoid branching at runtime
*/
#define S2N_LARGE_RECORD_LENGTH S2N_TLS_MAXIMUM_RECORD_LENGTH
#define S2N_LARGE_FRAGMENT_LENGTH S2N_TLS_MAXIMUM_FRAGMENT_LENGTH
#define S2N_TLS13_LARGE_FRAGMENT_LENGTH S2N_TLS13_MAXIMUM_FRAGMENT_LENGTH
/* Cap dynamic record resize threshold to 8M */
#define S2N_TLS_MAX_RESIZE_THRESHOLD (1024 * 1024 * 8)
/* Put a 64k cap on the size of any handshake message */
#define S2N_MAXIMUM_HANDSHAKE_MESSAGE_LENGTH (64 * 1024)
/* Maximum size for full encoded TLSInnerPlaintext (https://tools.ietf.org/html/rfc8446#section-5.4) */
#define S2N_MAXIMUM_INNER_PLAINTEXT_LENGTH ((1 << 14) + 1)
/* Alert messages are always 2 bytes long */
#define S2N_ALERT_LENGTH 2
/* Handshake messages have their own header too */
#define TLS_HANDSHAKE_HEADER_LENGTH 4
#define S2N_MAX_SERVER_NAME 255
|
