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https://github.com/vanhoefm/fragattacks.git
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129b9b991a
This same design is used in both the server and the client roles in the internal TLS implementation. Instead of duplicated implementation, use a helper function. Signed-off-by: Jouni Malinen <j@w1.fi>
273 lines
9.4 KiB
C
273 lines
9.4 KiB
C
/*
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* TLSv1 common definitions
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* Copyright (c) 2006-2014, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef TLSV1_COMMON_H
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#define TLSV1_COMMON_H
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#include "crypto/crypto.h"
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#define TLS_VERSION_1 0x0301 /* TLSv1 */
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#define TLS_VERSION_1_1 0x0302 /* TLSv1.1 */
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#define TLS_VERSION_1_2 0x0303 /* TLSv1.2 */
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#ifdef CONFIG_TLSV12
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#define TLS_VERSION TLS_VERSION_1_2
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#else /* CONFIG_TLSV12 */
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#ifdef CONFIG_TLSV11
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#define TLS_VERSION TLS_VERSION_1_1
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#else /* CONFIG_TLSV11 */
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#define TLS_VERSION TLS_VERSION_1
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#endif /* CONFIG_TLSV11 */
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#endif /* CONFIG_TLSV12 */
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#define TLS_RANDOM_LEN 32
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#define TLS_PRE_MASTER_SECRET_LEN 48
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#define TLS_MASTER_SECRET_LEN 48
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#define TLS_SESSION_ID_MAX_LEN 32
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#define TLS_VERIFY_DATA_LEN 12
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/* HandshakeType */
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enum {
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TLS_HANDSHAKE_TYPE_HELLO_REQUEST = 0,
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TLS_HANDSHAKE_TYPE_CLIENT_HELLO = 1,
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TLS_HANDSHAKE_TYPE_SERVER_HELLO = 2,
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TLS_HANDSHAKE_TYPE_NEW_SESSION_TICKET = 4 /* RFC 4507 */,
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TLS_HANDSHAKE_TYPE_CERTIFICATE = 11,
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TLS_HANDSHAKE_TYPE_SERVER_KEY_EXCHANGE = 12,
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TLS_HANDSHAKE_TYPE_CERTIFICATE_REQUEST = 13,
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TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE = 14,
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TLS_HANDSHAKE_TYPE_CERTIFICATE_VERIFY = 15,
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TLS_HANDSHAKE_TYPE_CLIENT_KEY_EXCHANGE = 16,
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TLS_HANDSHAKE_TYPE_FINISHED = 20,
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TLS_HANDSHAKE_TYPE_CERTIFICATE_URL = 21 /* RFC 4366 */,
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TLS_HANDSHAKE_TYPE_CERTIFICATE_STATUS = 22 /* RFC 4366 */
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};
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/* CipherSuite */
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#define TLS_NULL_WITH_NULL_NULL 0x0000 /* RFC 2246 */
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#define TLS_RSA_WITH_NULL_MD5 0x0001 /* RFC 2246 */
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#define TLS_RSA_WITH_NULL_SHA 0x0002 /* RFC 2246 */
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#define TLS_RSA_EXPORT_WITH_RC4_40_MD5 0x0003 /* RFC 2246 */
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#define TLS_RSA_WITH_RC4_128_MD5 0x0004 /* RFC 2246 */
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#define TLS_RSA_WITH_RC4_128_SHA 0x0005 /* RFC 2246 */
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#define TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 0x0006 /* RFC 2246 */
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#define TLS_RSA_WITH_IDEA_CBC_SHA 0x0007 /* RFC 2246 */
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#define TLS_RSA_EXPORT_WITH_DES40_CBC_SHA 0x0008 /* RFC 2246 */
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#define TLS_RSA_WITH_DES_CBC_SHA 0x0009 /* RFC 2246 */
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#define TLS_RSA_WITH_3DES_EDE_CBC_SHA 0x000A /* RFC 2246 */
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#define TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA 0x000B /* RFC 2246 */
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#define TLS_DH_DSS_WITH_DES_CBC_SHA 0x000C /* RFC 2246 */
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#define TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA 0x000D /* RFC 2246 */
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#define TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA 0x000E /* RFC 2246 */
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#define TLS_DH_RSA_WITH_DES_CBC_SHA 0x000F /* RFC 2246 */
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#define TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA 0x0010 /* RFC 2246 */
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#define TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA 0x0011 /* RFC 2246 */
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#define TLS_DHE_DSS_WITH_DES_CBC_SHA 0x0012 /* RFC 2246 */
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#define TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA 0x0013 /* RFC 2246 */
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#define TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA 0x0014 /* RFC 2246 */
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#define TLS_DHE_RSA_WITH_DES_CBC_SHA 0x0015 /* RFC 2246 */
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#define TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA 0x0016 /* RFC 2246 */
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#define TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 0x0017 /* RFC 2246 */
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#define TLS_DH_anon_WITH_RC4_128_MD5 0x0018 /* RFC 2246 */
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#define TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA 0x0019 /* RFC 2246 */
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#define TLS_DH_anon_WITH_DES_CBC_SHA 0x001A /* RFC 2246 */
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#define TLS_DH_anon_WITH_3DES_EDE_CBC_SHA 0x001B /* RFC 2246 */
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#define TLS_RSA_WITH_AES_128_CBC_SHA 0x002F /* RFC 3268 */
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#define TLS_DH_DSS_WITH_AES_128_CBC_SHA 0x0030 /* RFC 3268 */
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#define TLS_DH_RSA_WITH_AES_128_CBC_SHA 0x0031 /* RFC 3268 */
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#define TLS_DHE_DSS_WITH_AES_128_CBC_SHA 0x0032 /* RFC 3268 */
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#define TLS_DHE_RSA_WITH_AES_128_CBC_SHA 0x0033 /* RFC 3268 */
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#define TLS_DH_anon_WITH_AES_128_CBC_SHA 0x0034 /* RFC 3268 */
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#define TLS_RSA_WITH_AES_256_CBC_SHA 0x0035 /* RFC 3268 */
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#define TLS_DH_DSS_WITH_AES_256_CBC_SHA 0x0036 /* RFC 3268 */
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#define TLS_DH_RSA_WITH_AES_256_CBC_SHA 0x0037 /* RFC 3268 */
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#define TLS_DHE_DSS_WITH_AES_256_CBC_SHA 0x0038 /* RFC 3268 */
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#define TLS_DHE_RSA_WITH_AES_256_CBC_SHA 0x0039 /* RFC 3268 */
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#define TLS_DH_anon_WITH_AES_256_CBC_SHA 0x003A /* RFC 3268 */
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#define TLS_RSA_WITH_NULL_SHA256 0x003B /* RFC 5246 */
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#define TLS_RSA_WITH_AES_128_CBC_SHA256 0x003C /* RFC 5246 */
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#define TLS_RSA_WITH_AES_256_CBC_SHA256 0x003D /* RFC 5246 */
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#define TLS_DH_DSS_WITH_AES_128_CBC_SHA256 0x003E /* RFC 5246 */
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#define TLS_DH_RSA_WITH_AES_128_CBC_SHA256 0x003F /* RFC 5246 */
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#define TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 0x0040 /* RFC 5246 */
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#define TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 0x0067 /* RFC 5246 */
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#define TLS_DH_DSS_WITH_AES_256_CBC_SHA256 0x0068 /* RFC 5246 */
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#define TLS_DH_RSA_WITH_AES_256_CBC_SHA256 0x0069 /* RFC 5246 */
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#define TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 0x006A /* RFC 5246 */
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#define TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 0x006B /* RFC 5246 */
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#define TLS_DH_anon_WITH_AES_128_CBC_SHA256 0x006C /* RFC 5246 */
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#define TLS_DH_anon_WITH_AES_256_CBC_SHA256 0x006D /* RFC 5246 */
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/* CompressionMethod */
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#define TLS_COMPRESSION_NULL 0
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/* HashAlgorithm */
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enum {
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TLS_HASH_ALG_NONE = 0,
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TLS_HASH_ALG_MD5 = 1,
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TLS_HASH_ALG_SHA1 = 2,
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TLS_HASH_ALG_SHA224 = 3,
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TLS_HASH_ALG_SHA256 = 4,
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TLS_HASH_ALG_SHA384 = 5,
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TLS_HASH_ALG_SHA512 = 6
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};
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/* SignatureAlgorithm */
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enum {
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TLS_SIGN_ALG_ANONYMOUS = 0,
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TLS_SIGN_ALG_RSA = 1,
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TLS_SIGN_ALG_DSA = 2,
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TLS_SIGN_ALG_ECDSA = 3,
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};
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/* AlertLevel */
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#define TLS_ALERT_LEVEL_WARNING 1
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#define TLS_ALERT_LEVEL_FATAL 2
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/* AlertDescription */
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#define TLS_ALERT_CLOSE_NOTIFY 0
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#define TLS_ALERT_UNEXPECTED_MESSAGE 10
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#define TLS_ALERT_BAD_RECORD_MAC 20
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#define TLS_ALERT_DECRYPTION_FAILED 21
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#define TLS_ALERT_RECORD_OVERFLOW 22
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#define TLS_ALERT_DECOMPRESSION_FAILURE 30
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#define TLS_ALERT_HANDSHAKE_FAILURE 40
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#define TLS_ALERT_BAD_CERTIFICATE 42
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#define TLS_ALERT_UNSUPPORTED_CERTIFICATE 43
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#define TLS_ALERT_CERTIFICATE_REVOKED 44
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#define TLS_ALERT_CERTIFICATE_EXPIRED 45
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#define TLS_ALERT_CERTIFICATE_UNKNOWN 46
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#define TLS_ALERT_ILLEGAL_PARAMETER 47
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#define TLS_ALERT_UNKNOWN_CA 48
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#define TLS_ALERT_ACCESS_DENIED 49
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#define TLS_ALERT_DECODE_ERROR 50
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#define TLS_ALERT_DECRYPT_ERROR 51
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#define TLS_ALERT_EXPORT_RESTRICTION 60
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#define TLS_ALERT_PROTOCOL_VERSION 70
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#define TLS_ALERT_INSUFFICIENT_SECURITY 71
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#define TLS_ALERT_INTERNAL_ERROR 80
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#define TLS_ALERT_USER_CANCELED 90
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#define TLS_ALERT_NO_RENEGOTIATION 100
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#define TLS_ALERT_UNSUPPORTED_EXTENSION 110 /* RFC 4366 */
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#define TLS_ALERT_CERTIFICATE_UNOBTAINABLE 111 /* RFC 4366 */
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#define TLS_ALERT_UNRECOGNIZED_NAME 112 /* RFC 4366 */
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#define TLS_ALERT_BAD_CERTIFICATE_STATUS_RESPONSE 113 /* RFC 4366 */
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#define TLS_ALERT_BAD_CERTIFICATE_HASH_VALUE 114 /* RFC 4366 */
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/* ChangeCipherSpec */
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enum {
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TLS_CHANGE_CIPHER_SPEC = 1
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};
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/* TLS Extensions */
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#define TLS_EXT_SERVER_NAME 0 /* RFC 4366 */
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#define TLS_EXT_MAX_FRAGMENT_LENGTH 1 /* RFC 4366 */
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#define TLS_EXT_CLIENT_CERTIFICATE_URL 2 /* RFC 4366 */
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#define TLS_EXT_TRUSTED_CA_KEYS 3 /* RFC 4366 */
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#define TLS_EXT_TRUNCATED_HMAC 4 /* RFC 4366 */
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#define TLS_EXT_STATUS_REQUEST 5 /* RFC 4366 */
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#define TLS_EXT_SESSION_TICKET 35 /* RFC 4507 */
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#define TLS_EXT_PAC_OPAQUE TLS_EXT_SESSION_TICKET /* EAP-FAST terminology */
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typedef enum {
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TLS_KEY_X_NULL,
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TLS_KEY_X_RSA,
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TLS_KEY_X_RSA_EXPORT,
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TLS_KEY_X_DH_DSS_EXPORT,
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TLS_KEY_X_DH_DSS,
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TLS_KEY_X_DH_RSA_EXPORT,
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TLS_KEY_X_DH_RSA,
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TLS_KEY_X_DHE_DSS_EXPORT,
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TLS_KEY_X_DHE_DSS,
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TLS_KEY_X_DHE_RSA_EXPORT,
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TLS_KEY_X_DHE_RSA,
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TLS_KEY_X_DH_anon_EXPORT,
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TLS_KEY_X_DH_anon
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} tls_key_exchange;
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typedef enum {
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TLS_CIPHER_NULL,
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TLS_CIPHER_RC4_40,
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TLS_CIPHER_RC4_128,
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TLS_CIPHER_RC2_CBC_40,
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TLS_CIPHER_IDEA_CBC,
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TLS_CIPHER_DES40_CBC,
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TLS_CIPHER_DES_CBC,
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TLS_CIPHER_3DES_EDE_CBC,
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TLS_CIPHER_AES_128_CBC,
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TLS_CIPHER_AES_256_CBC
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} tls_cipher;
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typedef enum {
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TLS_HASH_NULL,
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TLS_HASH_MD5,
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TLS_HASH_SHA,
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TLS_HASH_SHA256
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} tls_hash;
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struct tls_cipher_suite {
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u16 suite;
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tls_key_exchange key_exchange;
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tls_cipher cipher;
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tls_hash hash;
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};
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typedef enum {
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TLS_CIPHER_STREAM,
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TLS_CIPHER_BLOCK
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} tls_cipher_type;
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struct tls_cipher_data {
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tls_cipher cipher;
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tls_cipher_type type;
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size_t key_material;
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size_t expanded_key_material;
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size_t block_size; /* also iv_size */
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enum crypto_cipher_alg alg;
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};
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struct tls_verify_hash {
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struct crypto_hash *md5_client;
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struct crypto_hash *sha1_client;
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struct crypto_hash *sha256_client;
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struct crypto_hash *md5_server;
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struct crypto_hash *sha1_server;
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struct crypto_hash *sha256_server;
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struct crypto_hash *md5_cert;
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struct crypto_hash *sha1_cert;
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struct crypto_hash *sha256_cert;
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};
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const struct tls_cipher_suite * tls_get_cipher_suite(u16 suite);
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const struct tls_cipher_data * tls_get_cipher_data(tls_cipher cipher);
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int tls_server_key_exchange_allowed(tls_cipher cipher);
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int tls_parse_cert(const u8 *buf, size_t len, struct crypto_public_key **pk);
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int tls_verify_hash_init(struct tls_verify_hash *verify);
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void tls_verify_hash_add(struct tls_verify_hash *verify, const u8 *buf,
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size_t len);
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void tls_verify_hash_free(struct tls_verify_hash *verify);
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int tls_version_ok(u16 ver);
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const char * tls_version_str(u16 ver);
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int tls_prf(u16 ver, const u8 *secret, size_t secret_len, const char *label,
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const u8 *seed, size_t seed_len, u8 *out, size_t outlen);
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int tlsv12_key_x_server_params_hash(u16 tls_version, const u8 *client_random,
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const u8 *server_random,
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const u8 *server_params,
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size_t server_params_len, u8 *hash);
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int tls_key_x_server_params_hash(u16 tls_version, const u8 *client_random,
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const u8 *server_random,
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const u8 *server_params,
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size_t server_params_len, u8 *hash);
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int tls_verify_signature(u16 tls_version, struct crypto_public_key *pk,
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const u8 *data, size_t data_len,
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const u8 *pos, size_t len, u8 *alert);
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#endif /* TLSV1_COMMON_H */
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