| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * openssl-core@openssl.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). |
| * |
| */ |
| /* ==================================================================== |
| * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. |
| * ECC cipher suite support in OpenSSL originally developed by |
| * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. |
| */ |
| /* ==================================================================== |
| * Copyright 2005 Nokia. All rights reserved. |
| * |
| * The portions of the attached software ("Contribution") is developed by |
| * Nokia Corporation and is licensed pursuant to the OpenSSL open source |
| * license. |
| * |
| * The Contribution, originally written by Mika Kousa and Pasi Eronen of |
| * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites |
| * support (see RFC 4279) to OpenSSL. |
| * |
| * No patent licenses or other rights except those expressly stated in |
| * the OpenSSL open source license shall be deemed granted or received |
| * expressly, by implication, estoppel, or otherwise. |
| * |
| * No assurances are provided by Nokia that the Contribution does not |
| * infringe the patent or other intellectual property rights of any third |
| * party or that the license provides you with all the necessary rights |
| * to make use of the Contribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN |
| * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA |
| * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY |
| * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR |
| * OTHERWISE. |
| */ |
| |
| #ifndef OPENSSL_HEADER_SSL_INTERNAL_H |
| #define OPENSSL_HEADER_SSL_INTERNAL_H |
| |
| #include <openssl/base.h> |
| |
| #include <openssl/aead.h> |
| #include <openssl/pqueue.h> |
| #include <openssl/ssl.h> |
| #include <openssl/stack.h> |
| |
| #if defined(OPENSSL_WINDOWS) |
| /* Windows defines struct timeval in winsock2.h. */ |
| #pragma warning(push, 3) |
| #include <winsock2.h> |
| #pragma warning(pop) |
| #else |
| #include <sys/types.h> |
| #endif |
| |
| |
| /* Cipher suites. */ |
| |
| /* Bits for |algorithm_mkey| (key exchange algorithm). */ |
| #define SSL_kRSA 0x00000001L |
| #define SSL_kDHE 0x00000002L |
| #define SSL_kECDHE 0x00000004L |
| /* SSL_kPSK is only set for plain PSK, not ECDHE_PSK. */ |
| #define SSL_kPSK 0x00000008L |
| |
| /* Bits for |algorithm_auth| (server authentication). */ |
| #define SSL_aRSA 0x00000001L |
| #define SSL_aECDSA 0x00000002L |
| /* SSL_aPSK is set for both PSK and ECDHE_PSK. */ |
| #define SSL_aPSK 0x00000004L |
| |
| /* Bits for |algorithm_enc| (symmetric encryption). */ |
| #define SSL_3DES 0x00000001L |
| #define SSL_RC4 0x00000002L |
| #define SSL_AES128 0x00000004L |
| #define SSL_AES256 0x00000008L |
| #define SSL_AES128GCM 0x00000010L |
| #define SSL_AES256GCM 0x00000020L |
| #define SSL_CHACHA20POLY1305 0x00000040L |
| |
| #define SSL_AES (SSL_AES128 | SSL_AES256 | SSL_AES128GCM | SSL_AES256GCM) |
| |
| /* Bits for |algorithm_mac| (symmetric authentication). */ |
| #define SSL_MD5 0x00000001L |
| #define SSL_SHA1 0x00000002L |
| #define SSL_SHA256 0x00000004L |
| #define SSL_SHA384 0x00000008L |
| /* SSL_AEAD is set for all AEADs. */ |
| #define SSL_AEAD 0x00000010L |
| |
| /* Bits for |algorithm_ssl| (protocol version). These denote the first protocol |
| * version which introduced the cipher. |
| * |
| * TODO(davidben): These are extremely confusing, both in code and in |
| * cipher rules. Try to remove them. */ |
| #define SSL_SSLV3 0x00000002L |
| #define SSL_TLSV1 SSL_SSLV3 |
| #define SSL_TLSV1_2 0x00000004L |
| |
| /* Bits for |algorithm2| (handshake digests and other extra flags). */ |
| |
| #define SSL_HANDSHAKE_MAC_MD5 0x10 |
| #define SSL_HANDSHAKE_MAC_SHA 0x20 |
| #define SSL_HANDSHAKE_MAC_SHA256 0x40 |
| #define SSL_HANDSHAKE_MAC_SHA384 0x80 |
| #define SSL_HANDSHAKE_MAC_DEFAULT \ |
| (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) |
| |
| /* SSL_MAX_DIGEST is the number of digest types which exist. When adding a new |
| * one, update the table in ssl_cipher.c. */ |
| #define SSL_MAX_DIGEST 4 |
| |
| /* SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD is a flag in |
| * SSL_CIPHER.algorithm2 which indicates that the variable part of the nonce is |
| * included as a prefix of the record. (AES-GCM, for example, does with with an |
| * 8-byte variable nonce.) */ |
| #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD (1<<22) |
| |
| /* Bits for |algo_strength|, cipher strength information. */ |
| #define SSL_MEDIUM 0x00000001L |
| #define SSL_HIGH 0x00000002L |
| #define SSL_FIPS 0x00000004L |
| |
| /* ssl_cipher_get_evp_aead sets |*out_aead| to point to the correct EVP_AEAD |
| * object for |cipher| protocol version |version|. It sets |*out_mac_secret_len| |
| * and |*out_fixed_iv_len| to the MAC key length and fixed IV length, |
| * respectively. The MAC key length is zero except for legacy block and stream |
| * ciphers. It returns 1 on success and 0 on error. */ |
| int ssl_cipher_get_evp_aead(const EVP_AEAD **out_aead, |
| size_t *out_mac_secret_len, |
| size_t *out_fixed_iv_len, |
| const SSL_CIPHER *cipher, uint16_t version); |
| |
| /* ssl_get_handshake_digest looks up the |i|th handshake digest type and sets |
| * |*out_mask| to the |SSL_HANDSHAKE_MAC_*| mask and |*out_md| to the |
| * |EVP_MD|. It returns one on successs and zero if |i| >= |SSL_MAX_DIGEST|. */ |
| int ssl_get_handshake_digest(uint32_t *out_mask, const EVP_MD **out_md, |
| size_t i); |
| |
| /* ssl_create_cipher_list evaluates |rule_str| according to the ciphers in |
| * |ssl_method|. It sets |*out_cipher_list| to a newly-allocated |
| * |ssl_cipher_preference_list_st| containing the result. |
| * |*out_cipher_list_by_id| is set to a list of selected ciphers sorted by |
| * id. It returns |(*out_cipher_list)->ciphers| on success and NULL on |
| * failure. */ |
| STACK_OF(SSL_CIPHER) * |
| ssl_create_cipher_list(const SSL_PROTOCOL_METHOD *ssl_method, |
| struct ssl_cipher_preference_list_st **out_cipher_list, |
| STACK_OF(SSL_CIPHER) **out_cipher_list_by_id, |
| const char *rule_str); |
| |
| /* ssl_cipher_get_value returns the cipher suite id of |cipher|. */ |
| uint16_t ssl_cipher_get_value(const SSL_CIPHER *cipher); |
| |
| /* ssl_cipher_get_key_type returns the |EVP_PKEY_*| value corresponding to the |
| * server key used in |cipher| or |EVP_PKEY_NONE| if there is none. */ |
| int ssl_cipher_get_key_type(const SSL_CIPHER *cipher); |
| |
| /* ssl_cipher_has_server_public_key returns 1 if |cipher| involves a server |
| * public key in the key exchange, sent in a server Certificate message. |
| * Otherwise it returns 0. */ |
| int ssl_cipher_has_server_public_key(const SSL_CIPHER *cipher); |
| |
| /* ssl_cipher_requires_server_key_exchange returns 1 if |cipher| requires a |
| * ServerKeyExchange message. Otherwise it returns 0. |
| * |
| * Unlike ssl_cipher_has_server_public_key, some ciphers take optional |
| * ServerKeyExchanges. PSK and RSA_PSK only use the ServerKeyExchange to |
| * communicate a psk_identity_hint, so it is optional. */ |
| int ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher); |
| |
| |
| /* Encryption layer. */ |
| |
| /* SSL_AEAD_CTX contains information about an AEAD that is being used to encrypt |
| * an SSL connection. */ |
| struct ssl_aead_ctx_st { |
| const SSL_CIPHER *cipher; |
| EVP_AEAD_CTX ctx; |
| /* fixed_nonce contains any bytes of the nonce that are fixed for all |
| * records. */ |
| uint8_t fixed_nonce[8]; |
| uint8_t fixed_nonce_len, variable_nonce_len; |
| /* variable_nonce_included_in_record is non-zero if the variable nonce |
| * for a record is included as a prefix before the ciphertext. */ |
| char variable_nonce_included_in_record; |
| /* random_variable_nonce is non-zero if the variable nonce is |
| * randomly generated, rather than derived from the sequence |
| * number. */ |
| char random_variable_nonce; |
| /* omit_length_in_ad is non-zero if the length should be omitted in the |
| * AEAD's ad parameter. */ |
| char omit_length_in_ad; |
| /* omit_version_in_ad is non-zero if the version should be omitted |
| * in the AEAD's ad parameter. */ |
| char omit_version_in_ad; |
| } /* SSL_AEAD_CTX */; |
| |
| /* SSL_AEAD_CTX_new creates a newly-allocated |SSL_AEAD_CTX| using the supplied |
| * key material. It returns NULL on error. Only one of |SSL_AEAD_CTX_open| or |
| * |SSL_AEAD_CTX_seal| may be used with the resulting object, depending on |
| * |direction|. |version| is the normalized protocol version, so DTLS 1.0 is |
| * represented as 0x0301, not 0xffef. */ |
| SSL_AEAD_CTX *SSL_AEAD_CTX_new(enum evp_aead_direction_t direction, |
| uint16_t version, const SSL_CIPHER *cipher, |
| const uint8_t *enc_key, size_t enc_key_len, |
| const uint8_t *mac_key, size_t mac_key_len, |
| const uint8_t *fixed_iv, size_t fixed_iv_len); |
| |
| /* SSL_AEAD_CTX_free frees |ctx|. */ |
| void SSL_AEAD_CTX_free(SSL_AEAD_CTX *ctx); |
| |
| /* SSL_AEAD_CTX_explicit_nonce_len returns the length of the explicit nonce for |
| * |ctx|, if any. |ctx| may be NULL to denote the null cipher. */ |
| size_t SSL_AEAD_CTX_explicit_nonce_len(SSL_AEAD_CTX *ctx); |
| |
| /* SSL_AEAD_CTX_max_overhead returns the maximum overhead of calling |
| * |SSL_AEAD_CTX_seal|. |ctx| may be NULL to denote the null cipher. */ |
| size_t SSL_AEAD_CTX_max_overhead(SSL_AEAD_CTX *ctx); |
| |
| /* SSL_AEAD_CTX_open authenticates and decrypts |in_len| bytes from |in| and |
| * writes the result to |out|. It returns one on success and zero on |
| * error. |ctx| may be NULL to denote the null cipher. |
| * |
| * If |in| and |out| alias then |out| must be <= |in| + |explicit_nonce_len|. */ |
| int SSL_AEAD_CTX_open(SSL_AEAD_CTX *ctx, uint8_t *out, size_t *out_len, |
| size_t max_out, uint8_t type, uint16_t wire_version, |
| const uint8_t seqnum[8], const uint8_t *in, |
| size_t in_len); |
| |
| /* SSL_AEAD_CTX_seal encrypts and authenticates |in_len| bytes from |in| and |
| * writes the result to |out|. It returns one on success and zero on |
| * error. |ctx| may be NULL to denote the null cipher. |
| * |
| * If |in| and |out| alias then |out| + |explicit_nonce_len| must be <= |in| */ |
| int SSL_AEAD_CTX_seal(SSL_AEAD_CTX *ctx, uint8_t *out, size_t *out_len, |
| size_t max_out, uint8_t type, uint16_t wire_version, |
| const uint8_t seqnum[8], const uint8_t *in, |
| size_t in_len); |
| |
| |
| /* Private key operations. */ |
| |
| /* ssl_private_key_* call the corresponding function on the |
| * |SSL_PRIVATE_KEY_METHOD| for |ssl|, if configured. Otherwise, they implement |
| * the operation with |EVP_PKEY|. */ |
| |
| int ssl_private_key_type(SSL *ssl); |
| |
| int ssl_private_key_supports_digest(SSL *ssl, const EVP_MD *md); |
| |
| size_t ssl_private_key_max_signature_len(SSL *ssl); |
| |
| enum ssl_private_key_result_t ssl_private_key_sign( |
| SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out, const EVP_MD *md, |
| const uint8_t *in, size_t in_len); |
| |
| enum ssl_private_key_result_t ssl_private_key_sign_complete( |
| SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out); |
| |
| |
| /* Underdocumented functions. |
| * |
| * Functions below here haven't been touched up and may be underdocumented. */ |
| |
| #define c2l(c, l) \ |
| (l = ((unsigned long)(*((c)++))), l |= (((unsigned long)(*((c)++))) << 8), \ |
| l |= (((unsigned long)(*((c)++))) << 16), \ |
| l |= (((unsigned long)(*((c)++))) << 24)) |
| |
| /* NOTE - c is not incremented as per c2l */ |
| #define c2ln(c, l1, l2, n) \ |
| { \ |
| c += n; \ |
| l1 = l2 = 0; \ |
| switch (n) { \ |
| case 8: \ |
| l2 = ((unsigned long)(*(--(c)))) << 24; \ |
| case 7: \ |
| l2 |= ((unsigned long)(*(--(c)))) << 16; \ |
| case 6: \ |
| l2 |= ((unsigned long)(*(--(c)))) << 8; \ |
| case 5: \ |
| l2 |= ((unsigned long)(*(--(c)))); \ |
| case 4: \ |
| l1 = ((unsigned long)(*(--(c)))) << 24; \ |
| case 3: \ |
| l1 |= ((unsigned long)(*(--(c)))) << 16; \ |
| case 2: \ |
| l1 |= ((unsigned long)(*(--(c)))) << 8; \ |
| case 1: \ |
| l1 |= ((unsigned long)(*(--(c)))); \ |
| } \ |
| } |
| |
| #define l2c(l, c) \ |
| (*((c)++) = (uint8_t)(((l)) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 8) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 16) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 24) & 0xff)) |
| |
| #define n2l(c, l) \ |
| (l = ((unsigned long)(*((c)++))) << 24, \ |
| l |= ((unsigned long)(*((c)++))) << 16, \ |
| l |= ((unsigned long)(*((c)++))) << 8, l |= ((unsigned long)(*((c)++)))) |
| |
| #define l2n(l, c) \ |
| (*((c)++) = (uint8_t)(((l) >> 24) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 16) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 8) & 0xff), \ |
| *((c)++) = (uint8_t)(((l)) & 0xff)) |
| |
| #define l2n8(l, c) \ |
| (*((c)++) = (uint8_t)(((l) >> 56) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 48) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 40) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 32) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 24) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 16) & 0xff), \ |
| *((c)++) = (uint8_t)(((l) >> 8) & 0xff), \ |
| *((c)++) = (uint8_t)(((l)) & 0xff)) |
| |
| /* NOTE - c is not incremented as per l2c */ |
| #define l2cn(l1, l2, c, n) \ |
| { \ |
| c += n; \ |
| switch (n) { \ |
| case 8: \ |
| *(--(c)) = (uint8_t)(((l2) >> 24) & 0xff); \ |
| case 7: \ |
| *(--(c)) = (uint8_t)(((l2) >> 16) & 0xff); \ |
| case 6: \ |
| *(--(c)) = (uint8_t)(((l2) >> 8) & 0xff); \ |
| case 5: \ |
| *(--(c)) = (uint8_t)(((l2)) & 0xff); \ |
| case 4: \ |
| *(--(c)) = (uint8_t)(((l1) >> 24) & 0xff); \ |
| case 3: \ |
| *(--(c)) = (uint8_t)(((l1) >> 16) & 0xff); \ |
| case 2: \ |
| *(--(c)) = (uint8_t)(((l1) >> 8) & 0xff); \ |
| case 1: \ |
| *(--(c)) = (uint8_t)(((l1)) & 0xff); \ |
| } \ |
| } |
| |
| #define n2s(c, s) \ |
| ((s = (((unsigned int)(c[0])) << 8) | (((unsigned int)(c[1])))), c += 2) |
| |
| #define s2n(s, c) \ |
| ((c[0] = (uint8_t)(((s) >> 8) & 0xff), \ |
| c[1] = (uint8_t)(((s)) & 0xff)), \ |
| c += 2) |
| |
| #define n2l3(c, l) \ |
| ((l = (((unsigned long)(c[0])) << 16) | (((unsigned long)(c[1])) << 8) | \ |
| (((unsigned long)(c[2])))), \ |
| c += 3) |
| |
| #define l2n3(l, c) \ |
| ((c[0] = (uint8_t)(((l) >> 16) & 0xff), \ |
| c[1] = (uint8_t)(((l) >> 8) & 0xff), \ |
| c[2] = (uint8_t)(((l)) & 0xff)), \ |
| c += 3) |
| |
| /* LOCAL STUFF */ |
| |
| #define TLSEXT_CHANNEL_ID_SIZE 128 |
| |
| /* Check if an SSL structure is using DTLS */ |
| #define SSL_IS_DTLS(s) (s->method->is_dtls) |
| /* See if we need explicit IV */ |
| #define SSL_USE_EXPLICIT_IV(s) \ |
| (s->enc_method->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) |
| /* See if we use signature algorithms extension and signature algorithm before |
| * signatures. */ |
| #define SSL_USE_SIGALGS(s) (s->enc_method->enc_flags & SSL_ENC_FLAG_SIGALGS) |
| /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may |
| * apply to others in future. */ |
| #define SSL_USE_TLS1_2_CIPHERS(s) \ |
| (s->enc_method->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) |
| /* Determine if a client can use TLS 1.2 ciphersuites: can't rely on method |
| * flags because it may not be set to correct version yet. */ |
| #define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \ |
| ((SSL_IS_DTLS(s) && s->client_version <= DTLS1_2_VERSION) || \ |
| (!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION)) |
| |
| /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | |
| * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) |
| * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) |
| * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN |
| * SSL_aRSA <- RSA_ENC | RSA_SIGN |
| * SSL_aDSS <- DSA_SIGN */ |
| |
| /* From RFC4492, used in encoding the curve type in ECParameters */ |
| #define EXPLICIT_PRIME_CURVE_TYPE 1 |
| #define EXPLICIT_CHAR2_CURVE_TYPE 2 |
| #define NAMED_CURVE_TYPE 3 |
| |
| enum ssl_hash_message_t { |
| ssl_dont_hash_message, |
| ssl_hash_message, |
| }; |
| |
| /* Structure containing decoded values of signature algorithms extension */ |
| typedef struct tls_sigalgs_st { |
| uint8_t rsign; |
| uint8_t rhash; |
| } TLS_SIGALGS; |
| |
| typedef struct cert_st { |
| X509 *x509; |
| EVP_PKEY *privatekey; |
| /* Chain for this certificate */ |
| STACK_OF(X509) *chain; |
| |
| /* key_method, if non-NULL, is a set of callbacks to call for private key |
| * operations. */ |
| const SSL_PRIVATE_KEY_METHOD *key_method; |
| |
| /* For clients the following masks are of *disabled* key and auth algorithms |
| * based on the current session. |
| * |
| * TODO(davidben): Remove these. They get checked twice: when sending the |
| * ClientHello and when processing the ServerHello. However, mask_ssl is a |
| * different value both times. mask_k and mask_a are not, but is a |
| * round-about way of checking the server's cipher was one of the advertised |
| * ones. (Currently it checks the masks and then the list of ciphers prior to |
| * applying the masks in ClientHello.) */ |
| uint32_t mask_k; |
| uint32_t mask_a; |
| uint32_t mask_ssl; |
| |
| DH *dh_tmp; |
| DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); |
| |
| /* ecdh_nid, if not |NID_undef|, is the NID of the curve to use for ephemeral |
| * ECDH keys. If unset, |ecdh_tmp_cb| is consulted. */ |
| int ecdh_nid; |
| /* ecdh_tmp_cb is a callback for selecting the curve to use for ephemeral ECDH |
| * keys. If NULL, a curve is selected automatically. See |
| * |SSL_CTX_set_tmp_ecdh_callback|. */ |
| EC_KEY *(*ecdh_tmp_cb)(SSL *ssl, int is_export, int keysize); |
| |
| /* Server-only: client_certificate_types is list of certificate types to |
| * include in the CertificateRequest message. |
| */ |
| uint8_t *client_certificate_types; |
| size_t num_client_certificate_types; |
| |
| /* signature algorithms peer reports: e.g. supported signature |
| * algorithms extension for server or as part of a certificate |
| * request for client. */ |
| uint8_t *peer_sigalgs; |
| /* Size of above array */ |
| size_t peer_sigalgslen; |
| /* suppported signature algorithms. |
| * When set on a client this is sent in the client hello as the |
| * supported signature algorithms extension. For servers |
| * it represents the signature algorithms we are willing to use. */ |
| uint8_t *conf_sigalgs; |
| /* Size of above array */ |
| size_t conf_sigalgslen; |
| /* Client authentication signature algorithms, if not set then |
| * uses conf_sigalgs. On servers these will be the signature |
| * algorithms sent to the client in a cerificate request for TLS 1.2. |
| * On a client this represents the signature algortithms we are |
| * willing to use for client authentication. */ |
| uint8_t *client_sigalgs; |
| /* Size of above array */ |
| size_t client_sigalgslen; |
| /* Signature algorithms shared by client and server: cached |
| * because these are used most often. */ |
| TLS_SIGALGS *shared_sigalgs; |
| size_t shared_sigalgslen; |
| |
| /* Certificate setup callback: if set is called whenever a |
| * certificate may be required (client or server). the callback |
| * can then examine any appropriate parameters and setup any |
| * certificates required. This allows advanced applications |
| * to select certificates on the fly: for example based on |
| * supported signature algorithms or curves. */ |
| int (*cert_cb)(SSL *ssl, void *arg); |
| void *cert_cb_arg; |
| |
| /* Optional X509_STORE for chain building or certificate validation |
| * If NULL the parent SSL_CTX store is used instead. */ |
| X509_STORE *chain_store; |
| X509_STORE *verify_store; |
| } CERT; |
| |
| typedef struct sess_cert_st { |
| /* cert_chain is the certificate chain sent by the peer. NOTE: for a client, |
| * this does includes the server's leaf certificate, but, for a server, this |
| * does NOT include the client's leaf. */ |
| STACK_OF(X509) *cert_chain; |
| |
| /* peer_cert, on a client, is the leaf certificate of the peer. */ |
| X509 *peer_cert; |
| |
| DH *peer_dh_tmp; |
| EC_KEY *peer_ecdh_tmp; |
| } SESS_CERT; |
| |
| /* SSL_METHOD is a compatibility structure to support the legacy version-locked |
| * methods. */ |
| struct ssl_method_st { |
| /* version, if non-zero, is the only protocol version acceptable to an |
| * SSL_CTX initialized from this method. */ |
| uint16_t version; |
| /* method is the underlying SSL_PROTOCOL_METHOD that initializes the |
| * SSL_CTX. */ |
| const SSL_PROTOCOL_METHOD *method; |
| }; |
| |
| /* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */ |
| struct ssl_protocol_method_st { |
| /* is_dtls is one if the protocol is DTLS and zero otherwise. */ |
| char is_dtls; |
| int (*ssl_new)(SSL *s); |
| void (*ssl_free)(SSL *s); |
| int (*ssl_accept)(SSL *s); |
| int (*ssl_connect)(SSL *s); |
| long (*ssl_get_message)(SSL *s, int header_state, int body_state, |
| int msg_type, long max, |
| enum ssl_hash_message_t hash_message, int *ok); |
| int (*ssl_read_app_data)(SSL *s, uint8_t *buf, int len, int peek); |
| void (*ssl_read_close_notify)(SSL *s); |
| int (*ssl_write_app_data)(SSL *s, const void *buf_, int len); |
| int (*ssl_dispatch_alert)(SSL *s); |
| long (*ssl_ctrl)(SSL *s, int cmd, long larg, void *parg); |
| long (*ssl_ctx_ctrl)(SSL_CTX *ctx, int cmd, long larg, void *parg); |
| /* supports_cipher returns one if |cipher| is supported by this protocol and |
| * zero otherwise. */ |
| int (*supports_cipher)(const SSL_CIPHER *cipher); |
| /* Handshake header length */ |
| unsigned int hhlen; |
| /* Set the handshake header */ |
| int (*set_handshake_header)(SSL *s, int type, unsigned long len); |
| /* Write out handshake message */ |
| int (*do_write)(SSL *s); |
| }; |
| |
| /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit |
| * of a mess of functions, but hell, think of it as an opaque structure. */ |
| struct ssl3_enc_method { |
| int (*prf)(SSL *, uint8_t *, size_t, const uint8_t *, size_t, const char *, |
| size_t, const uint8_t *, size_t, const uint8_t *, size_t); |
| int (*setup_key_block)(SSL *); |
| int (*generate_master_secret)(SSL *, uint8_t *, const uint8_t *, size_t); |
| int (*change_cipher_state)(SSL *, int); |
| int (*final_finish_mac)(SSL *, const char *, int, uint8_t *); |
| int (*cert_verify_mac)(SSL *, int, uint8_t *); |
| const char *client_finished_label; |
| int client_finished_label_len; |
| const char *server_finished_label; |
| int server_finished_label_len; |
| int (*alert_value)(int); |
| int (*export_keying_material)(SSL *, uint8_t *, size_t, const char *, size_t, |
| const uint8_t *, size_t, int use_context); |
| /* Various flags indicating protocol version requirements */ |
| unsigned int enc_flags; |
| }; |
| |
| #define SSL_HM_HEADER_LENGTH(s) s->method->hhlen |
| #define ssl_handshake_start(s) \ |
| (((uint8_t *)s->init_buf->data) + s->method->hhlen) |
| #define ssl_set_handshake_header(s, htype, len) \ |
| s->method->set_handshake_header(s, htype, len) |
| #define ssl_do_write(s) s->method->do_write(s) |
| |
| /* Values for enc_flags */ |
| |
| /* Uses explicit IV for CBC mode */ |
| #define SSL_ENC_FLAG_EXPLICIT_IV 0x1 |
| /* Uses signature algorithms extension */ |
| #define SSL_ENC_FLAG_SIGALGS 0x2 |
| /* Uses SHA256 default PRF */ |
| #define SSL_ENC_FLAG_SHA256_PRF 0x4 |
| /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: |
| * may apply to others in future. */ |
| #define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x8 |
| |
| /* lengths of messages */ |
| #define DTLS1_COOKIE_LENGTH 256 |
| |
| #define DTLS1_RT_HEADER_LENGTH 13 |
| |
| #define DTLS1_HM_HEADER_LENGTH 12 |
| |
| #define DTLS1_CCS_HEADER_LENGTH 1 |
| |
| #define DTLS1_AL_HEADER_LENGTH 2 |
| |
| typedef struct dtls1_bitmap_st { |
| /* map is a bit mask of the last 64 sequence numbers. Bit |
| * |1<<i| corresponds to |max_seq_num - i|. */ |
| uint64_t map; |
| /* max_seq_num is the largest sequence number seen so far. It |
| * is a 64-bit value in big-endian encoding. */ |
| uint8_t max_seq_num[8]; |
| } DTLS1_BITMAP; |
| |
| /* TODO(davidben): This structure is used for both incoming messages and |
| * outgoing messages. |is_ccs| and |epoch| are only used in the latter and |
| * should be moved elsewhere. */ |
| struct hm_header_st { |
| uint8_t type; |
| uint32_t msg_len; |
| uint16_t seq; |
| uint32_t frag_off; |
| uint32_t frag_len; |
| int is_ccs; |
| /* epoch, for buffered outgoing messages, is the epoch the message was |
| * originally sent in. */ |
| uint16_t epoch; |
| }; |
| |
| /* TODO(davidben): This structure is used for both incoming messages and |
| * outgoing messages. |fragment| and |reassembly| are only used in the former |
| * and should be moved elsewhere. */ |
| typedef struct hm_fragment_st { |
| struct hm_header_st msg_header; |
| uint8_t *fragment; |
| uint8_t *reassembly; |
| } hm_fragment; |
| |
| typedef struct dtls1_state_st { |
| /* send_cookie is true if we are resending the ClientHello |
| * with a cookie from a HelloVerifyRequest. */ |
| unsigned int send_cookie; |
| |
| uint8_t cookie[DTLS1_COOKIE_LENGTH]; |
| size_t cookie_len; |
| |
| /* The current data and handshake epoch. This is initially undefined, and |
| * starts at zero once the initial handshake is completed. */ |
| uint16_t r_epoch; |
| uint16_t w_epoch; |
| |
| /* records being received in the current epoch */ |
| DTLS1_BITMAP bitmap; |
| |
| /* handshake message numbers */ |
| uint16_t handshake_write_seq; |
| uint16_t next_handshake_write_seq; |
| |
| uint16_t handshake_read_seq; |
| |
| /* save last sequence number for retransmissions */ |
| uint8_t last_write_sequence[8]; |
| |
| /* buffered_messages is a priority queue of incoming handshake messages that |
| * have yet to be processed. |
| * |
| * TODO(davidben): This data structure may as well be a ring buffer of fixed |
| * size. */ |
| pqueue buffered_messages; |
| |
| /* send_messages is a priority queue of outgoing handshake messages sent in |
| * the most recent handshake flight. |
| * |
| * TODO(davidben): This data structure may as well be a STACK_OF(T). */ |
| pqueue sent_messages; |
| |
| unsigned int mtu; /* max DTLS packet size */ |
| |
| struct hm_header_st w_msg_hdr; |
| |
| /* num_timeouts is the number of times the retransmit timer has fired since |
| * the last time it was reset. */ |
| unsigned int num_timeouts; |
| |
| /* Indicates when the last handshake msg or heartbeat sent will |
| * timeout. */ |
| struct timeval next_timeout; |
| |
| /* Timeout duration */ |
| unsigned short timeout_duration; |
| |
| unsigned int change_cipher_spec_ok; |
| } DTLS1_STATE; |
| |
| extern const SSL3_ENC_METHOD TLSv1_enc_data; |
| extern const SSL3_ENC_METHOD TLSv1_1_enc_data; |
| extern const SSL3_ENC_METHOD TLSv1_2_enc_data; |
| extern const SSL3_ENC_METHOD SSLv3_enc_data; |
| |
| void ssl_clear_cipher_ctx(SSL *s); |
| int ssl_clear_bad_session(SSL *s); |
| CERT *ssl_cert_new(void); |
| CERT *ssl_cert_dup(CERT *cert); |
| void ssl_cert_clear_certs(CERT *c); |
| void ssl_cert_free(CERT *c); |
| SESS_CERT *ssl_sess_cert_new(void); |
| SESS_CERT *ssl_sess_cert_dup(const SESS_CERT *sess_cert); |
| void ssl_sess_cert_free(SESS_CERT *sess_cert); |
| int ssl_get_new_session(SSL *s, int session); |
| |
| enum ssl_session_result_t { |
| ssl_session_success, |
| ssl_session_error, |
| ssl_session_retry, |
| }; |
| |
| /* ssl_get_prev_session looks up the previous session based on |ctx|. On |
| * success, it sets |*out_session| to the session or NULL if none was found. It |
| * sets |*out_send_ticket| to whether a ticket should be sent at the end of the |
| * handshake. If the session could not be looked up synchronously, it returns |
| * |ssl_session_retry| and should be called again. Otherwise, it returns |
| * |ssl_session_error|. */ |
| enum ssl_session_result_t ssl_get_prev_session( |
| SSL *ssl, SSL_SESSION **out_session, int *out_send_ticket, |
| const struct ssl_early_callback_ctx *ctx); |
| |
| STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const CBS *cbs); |
| int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, uint8_t *p); |
| struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_dup( |
| struct ssl_cipher_preference_list_st *cipher_list); |
| void ssl_cipher_preference_list_free( |
| struct ssl_cipher_preference_list_st *cipher_list); |
| struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_from_ciphers( |
| STACK_OF(SSL_CIPHER) *ciphers); |
| struct ssl_cipher_preference_list_st *ssl_get_cipher_preferences(SSL *s); |
| |
| int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain); |
| int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain); |
| int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509); |
| int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509); |
| void ssl_cert_set_cert_cb(CERT *cert, |
| int (*cb)(SSL *ssl, void *arg), void *arg); |
| |
| int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); |
| int ssl_add_cert_chain(SSL *s, unsigned long *l); |
| int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref); |
| void ssl_update_cache(SSL *s, int mode); |
| |
| /* ssl_get_compatible_server_ciphers determines the key exchange and |
| * authentication cipher suite masks compatible with the server configuration |
| * and current ClientHello parameters of |s|. It sets |*out_mask_k| to the key |
| * exchange mask and |*out_mask_a| to the authentication mask. */ |
| void ssl_get_compatible_server_ciphers(SSL *s, uint32_t *out_mask_k, |
| uint32_t *out_mask_a); |
| |
| STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); |
| int ssl_verify_alarm_type(long type); |
| |
| /* ssl_fill_hello_random fills a client_random or server_random field of length |
| * |len|. It returns one on success and zero on failure. */ |
| int ssl_fill_hello_random(uint8_t *out, size_t len, int is_server); |
| |
| int ssl3_init_finished_mac(SSL *s); |
| int ssl3_send_server_certificate(SSL *s); |
| int ssl3_send_new_session_ticket(SSL *s); |
| int ssl3_send_cert_status(SSL *s); |
| int ssl3_get_finished(SSL *s, int state_a, int state_b); |
| int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); |
| int ssl3_prf(SSL *s, uint8_t *out, size_t out_len, const uint8_t *secret, |
| size_t secret_len, const char *label, size_t label_len, |
| const uint8_t *seed1, size_t seed1_len, |
| const uint8_t *seed2, size_t seed2_len); |
| void ssl3_cleanup_key_block(SSL *s); |
| int ssl3_do_write(SSL *s, int type); |
| int ssl3_send_alert(SSL *s, int level, int desc); |
| int ssl3_get_req_cert_type(SSL *s, uint8_t *p); |
| long ssl3_get_message(SSL *s, int header_state, int body_state, int msg_type, |
| long max, enum ssl_hash_message_t hash_message, int *ok); |
| |
| /* ssl3_hash_current_message incorporates the current handshake message into the |
| * handshake hash. It returns one on success and zero on allocation failure. */ |
| int ssl3_hash_current_message(SSL *s); |
| |
| /* ssl3_cert_verify_hash writes the CertificateVerify hash into the bytes |
| * pointed to by |out| and writes the number of bytes to |*out_len|. |out| must |
| * have room for EVP_MAX_MD_SIZE bytes. For TLS 1.2 and up, |*out_md| is used |
| * for the hash function, otherwise the hash function depends on |pkey_type| |
| * and is written to |*out_md|. It returns one on success and zero on |
| * failure. */ |
| int ssl3_cert_verify_hash(SSL *s, uint8_t *out, size_t *out_len, |
| const EVP_MD **out_md, int pkey_type); |
| |
| int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); |
| int ssl3_supports_cipher(const SSL_CIPHER *cipher); |
| int ssl3_dispatch_alert(SSL *s); |
| int ssl3_expect_change_cipher_spec(SSL *s); |
| int ssl3_read_app_data(SSL *ssl, uint8_t *buf, int len, int peek); |
| void ssl3_read_close_notify(SSL *ssl); |
| int ssl3_read_bytes(SSL *s, int type, uint8_t *buf, int len, int peek); |
| int ssl3_write_app_data(SSL *ssl, const void *buf, int len); |
| int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); |
| int ssl3_final_finish_mac(SSL *s, const char *sender, int slen, uint8_t *p); |
| int ssl3_cert_verify_mac(SSL *s, int md_nid, uint8_t *p); |
| int ssl3_finish_mac(SSL *s, const uint8_t *buf, int len); |
| void ssl3_free_digest_list(SSL *s); |
| int ssl3_output_cert_chain(SSL *s); |
| const SSL_CIPHER *ssl3_choose_cipher( |
| SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, |
| struct ssl_cipher_preference_list_st *srvr); |
| int ssl3_setup_read_buffer(SSL *s); |
| int ssl3_setup_write_buffer(SSL *s); |
| int ssl3_release_read_buffer(SSL *s); |
| int ssl3_release_write_buffer(SSL *s); |
| |
| enum should_free_handshake_buffer_t { |
| free_handshake_buffer, |
| dont_free_handshake_buffer, |
| }; |
| int ssl3_digest_cached_records(SSL *s, enum should_free_handshake_buffer_t); |
| |
| int ssl3_new(SSL *s); |
| void ssl3_free(SSL *s); |
| int ssl3_accept(SSL *s); |
| int ssl3_connect(SSL *s); |
| long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); |
| long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); |
| |
| /* ssl3_record_sequence_update increments the sequence number in |seq|. It |
| * returns one on success and zero on wraparound. */ |
| int ssl3_record_sequence_update(uint8_t *seq, size_t seq_len); |
| |
| int ssl3_do_change_cipher_spec(SSL *ssl); |
| |
| int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len); |
| int ssl3_handshake_write(SSL *s); |
| |
| enum dtls1_use_epoch_t { |
| dtls1_use_previous_epoch, |
| dtls1_use_current_epoch, |
| }; |
| |
| int dtls1_do_write(SSL *s, int type, enum dtls1_use_epoch_t use_epoch); |
| int ssl3_read_n(SSL *s, int n, int extend); |
| int dtls1_read_app_data(SSL *ssl, uint8_t *buf, int len, int peek); |
| void dtls1_read_close_notify(SSL *ssl); |
| int dtls1_read_bytes(SSL *s, int type, uint8_t *buf, int len, int peek); |
| int ssl3_write_pending(SSL *s, int type, const uint8_t *buf, unsigned int len); |
| void dtls1_set_message_header(SSL *s, uint8_t mt, unsigned long len, |
| unsigned short seq_num, unsigned long frag_off, |
| unsigned long frag_len); |
| |
| int dtls1_write_app_data(SSL *s, const void *buf, int len); |
| int dtls1_write_bytes(SSL *s, int type, const void *buf, int len, |
| enum dtls1_use_epoch_t use_epoch); |
| |
| int dtls1_send_change_cipher_spec(SSL *s, int a, int b); |
| int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen); |
| int dtls1_read_failed(SSL *s, int code); |
| int dtls1_buffer_message(SSL *s, int ccs); |
| int dtls1_get_queue_priority(unsigned short seq, int is_ccs); |
| int dtls1_retransmit_buffered_messages(SSL *s); |
| void dtls1_clear_record_buffer(SSL *s); |
| void dtls1_get_message_header(uint8_t *data, struct hm_header_st *msg_hdr); |
| void dtls1_reset_seq_numbers(SSL *s, int rw); |
| int dtls1_check_timeout_num(SSL *s); |
| int dtls1_set_handshake_header(SSL *s, int type, unsigned long len); |
| int dtls1_handshake_write(SSL *s); |
| |
| int dtls1_supports_cipher(const SSL_CIPHER *cipher); |
| void dtls1_start_timer(SSL *s); |
| void dtls1_stop_timer(SSL *s); |
| int dtls1_is_timer_expired(SSL *s); |
| void dtls1_double_timeout(SSL *s); |
| unsigned int dtls1_min_mtu(void); |
| void dtls1_hm_fragment_free(hm_fragment *frag); |
| |
| /* some client-only functions */ |
| int ssl3_send_client_hello(SSL *s); |
| int ssl3_get_server_hello(SSL *s); |
| int ssl3_get_certificate_request(SSL *s); |
| int ssl3_get_new_session_ticket(SSL *s); |
| int ssl3_get_cert_status(SSL *s); |
| int ssl3_get_server_done(SSL *s); |
| int ssl3_send_cert_verify(SSL *s); |
| int ssl3_send_client_certificate(SSL *s); |
| int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); |
| int ssl3_send_client_key_exchange(SSL *s); |
| int ssl3_get_server_key_exchange(SSL *s); |
| int ssl3_get_server_certificate(SSL *s); |
| int ssl3_send_next_proto(SSL *s); |
| int ssl3_send_channel_id(SSL *s); |
| |
| int dtls1_client_hello(SSL *s); |
| |
| /* some server-only functions */ |
| int ssl3_get_initial_bytes(SSL *s); |
| int ssl3_get_v2_client_hello(SSL *s); |
| int ssl3_get_client_hello(SSL *s); |
| int ssl3_send_server_hello(SSL *s); |
| int ssl3_send_server_key_exchange(SSL *s); |
| int ssl3_send_certificate_request(SSL *s); |
| int ssl3_send_server_done(SSL *s); |
| int ssl3_get_client_certificate(SSL *s); |
| int ssl3_get_client_key_exchange(SSL *s); |
| int ssl3_get_cert_verify(SSL *s); |
| int ssl3_get_next_proto(SSL *s); |
| int ssl3_get_channel_id(SSL *s); |
| |
| int dtls1_new(SSL *s); |
| int dtls1_accept(SSL *s); |
| int dtls1_connect(SSL *s); |
| void dtls1_free(SSL *s); |
| |
| long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, |
| enum ssl_hash_message_t hash_message, int *ok); |
| int dtls1_get_record(SSL *s); |
| int dtls1_dispatch_alert(SSL *s); |
| |
| int ssl_init_wbio_buffer(SSL *s, int push); |
| void ssl_free_wbio_buffer(SSL *s); |
| |
| /* tls1_prf computes the TLS PRF function for |s| as described in RFC 5246, |
| * section 5 and RFC 2246 section 5. It writes |out_len| bytes to |out|, using |
| * |secret| as the secret and |label| as the label. |seed1| and |seed2| are |
| * concatenated to form the seed parameter. It returns one on success and zero |
| * on failure. */ |
| int tls1_prf(SSL *s, uint8_t *out, size_t out_len, const uint8_t *secret, |
| size_t secret_len, const char *label, size_t label_len, |
| const uint8_t *seed1, size_t seed1_len, |
| const uint8_t *seed2, size_t seed2_len); |
| |
| int tls1_change_cipher_state(SSL *s, int which); |
| int tls1_setup_key_block(SSL *s); |
| int tls1_handshake_digest(SSL *s, uint8_t *out, size_t out_len); |
| int tls1_final_finish_mac(SSL *s, const char *str, int slen, uint8_t *p); |
| int tls1_cert_verify_mac(SSL *s, int md_nid, uint8_t *p); |
| int tls1_generate_master_secret(SSL *s, uint8_t *out, const uint8_t *premaster, |
| size_t premaster_len); |
| int tls1_export_keying_material(SSL *s, uint8_t *out, size_t out_len, |
| const char *label, size_t label_len, |
| const uint8_t *context, size_t context_len, |
| int use_context); |
| int tls1_alert_code(int code); |
| int ssl3_alert_code(int code); |
| |
| char ssl_early_callback_init(struct ssl_early_callback_ctx *ctx); |
| int tls1_ec_curve_id2nid(uint16_t curve_id); |
| int tls1_ec_nid2curve_id(uint16_t *out_curve_id, int nid); |
| |
| /* tls1_check_curve parses ECParameters out of |cbs|, modifying it. It |
| * checks the curve is one of our preferences and writes the |
| * NamedCurve value to |*out_curve_id|. It returns one on success and |
| * zero on error. */ |
| int tls1_check_curve(SSL *s, CBS *cbs, uint16_t *out_curve_id); |
| |
| /* tls1_get_shared_curve returns the NID of the first preferred shared curve |
| * between client and server preferences. If none can be found, it returns |
| * NID_undef. */ |
| int tls1_get_shared_curve(SSL *s); |
| |
| /* tls1_set_curves converts the array of |ncurves| NIDs pointed to by |curves| |
| * into a newly allocated array of TLS curve IDs. On success, the function |
| * returns one and writes the array to |*out_curve_ids| and its size to |
| * |*out_curve_ids_len|. Otherwise, it returns zero. */ |
| int tls1_set_curves(uint16_t **out_curve_ids, size_t *out_curve_ids_len, |
| const int *curves, size_t ncurves); |
| |
| /* tls1_check_ec_cert returns one if |x| is an ECC certificate with curve and |
| * point format compatible with the client's preferences. Otherwise it returns |
| * zero. */ |
| int tls1_check_ec_cert(SSL *s, X509 *x); |
| |
| /* tls1_check_ec_tmp_key returns one if the EC temporary key is compatible with |
| * client extensions and zero otherwise. */ |
| int tls1_check_ec_tmp_key(SSL *s); |
| |
| int tls1_shared_list(SSL *s, const uint8_t *l1, size_t l1len, const uint8_t *l2, |
| size_t l2len, int nmatch); |
| uint8_t *ssl_add_clienthello_tlsext(SSL *s, uint8_t *const buf, |
| uint8_t *const limit, size_t header_len); |
| uint8_t *ssl_add_serverhello_tlsext(SSL *s, uint8_t *const buf, |
| uint8_t *const limit); |
| int ssl_parse_clienthello_tlsext(SSL *s, CBS *cbs); |
| int ssl_parse_serverhello_tlsext(SSL *s, CBS *cbs); |
| int ssl_prepare_clienthello_tlsext(SSL *s); |
| int ssl_prepare_serverhello_tlsext(SSL *s); |
| |
| #define tlsext_tick_md EVP_sha256 |
| |
| /* tls_process_ticket processes the session ticket extension. On success, it |
| * sets |*out_session| to the decrypted session or NULL if the ticket was |
| * rejected. It sets |*out_send_ticket| to whether a new ticket should be sent |
| * at the end of the handshake. It returns one on success and zero on fatal |
| * error. */ |
| int tls_process_ticket(SSL *ssl, SSL_SESSION **out_session, |
| int *out_send_ticket, const uint8_t *ticket, |
| size_t ticket_len, const uint8_t *session_id, |
| size_t session_id_len); |
| |
| /* tls12_get_sigandhash assembles the SignatureAndHashAlgorithm corresponding to |
| * |ssl|'s private key and |md|. The two-byte value is written to |p|. It |
| * returns one on success and zero on failure. */ |
| int tls12_get_sigandhash(SSL *ssl, uint8_t *p, const EVP_MD *md); |
| int tls12_get_sigid(int pkey_type); |
| const EVP_MD *tls12_get_hash(uint8_t hash_alg); |
| |
| int tls1_channel_id_hash(EVP_MD_CTX *ctx, SSL *s); |
| int tls1_record_handshake_hashes_for_channel_id(SSL *s); |
| |
| int tls1_set_sigalgs_list(CERT *c, const char *str, int client); |
| int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client); |
| |
| /* ssl_ctx_log_rsa_client_key_exchange logs |premaster| to |ctx|, if logging is |
| * enabled. It returns one on success and zero on failure. The entry is |
| * identified by the first 8 bytes of |encrypted_premaster|. */ |
| int ssl_ctx_log_rsa_client_key_exchange(SSL_CTX *ctx, |
| const uint8_t *encrypted_premaster, |
| size_t encrypted_premaster_len, |
| const uint8_t *premaster, |
| size_t premaster_len); |
| |
| /* ssl_ctx_log_master_secret logs |master| to |ctx|, if logging is enabled. It |
| * returns one on success and zero on failure. The entry is identified by |
| * |client_random|. */ |
| int ssl_ctx_log_master_secret(SSL_CTX *ctx, const uint8_t *client_random, |
| size_t client_random_len, const uint8_t *master, |
| size_t master_len); |
| |
| /* ssl3_can_false_start returns one if |s| is allowed to False Start and zero |
| * otherwise. */ |
| int ssl3_can_false_start(const SSL *s); |
| |
| /* ssl3_get_enc_method returns the SSL3_ENC_METHOD corresponding to |
| * |version|. */ |
| const SSL3_ENC_METHOD *ssl3_get_enc_method(uint16_t version); |
| |
| /* ssl3_get_max_server_version returns the maximum SSL/TLS version number |
| * supported by |s| as a server, or zero if all versions are disabled. */ |
| uint16_t ssl3_get_max_server_version(const SSL *s); |
| |
| /* ssl3_get_mutual_version selects the protocol version on |s| for a client |
| * which advertises |client_version|. If no suitable version exists, it returns |
| * zero. */ |
| uint16_t ssl3_get_mutual_version(SSL *s, uint16_t client_version); |
| |
| /* ssl3_get_max_client_version returns the maximum protocol version configured |
| * for the client. It is guaranteed that the set of allowed versions at or below |
| * this maximum version is contiguous. If all versions are disabled, it returns |
| * zero. */ |
| uint16_t ssl3_get_max_client_version(SSL *s); |
| |
| /* ssl3_is_version_enabled returns one if |version| is an enabled protocol |
| * version for |s| and zero otherwise. */ |
| int ssl3_is_version_enabled(SSL *s, uint16_t version); |
| |
| /* ssl3_version_from_wire maps |wire_version| to a protocol version. For |
| * SSLv3/TLS, the version is returned as-is. For DTLS, the corresponding TLS |
| * version is used. Note that this mapping is not injective but preserves |
| * comparisons. |
| * |
| * TODO(davidben): To normalize some DTLS-specific code, move away from using |
| * the wire version except at API boundaries. */ |
| uint16_t ssl3_version_from_wire(SSL *s, uint16_t wire_version); |
| |
| uint32_t ssl_get_algorithm2(SSL *s); |
| int tls1_process_sigalgs(SSL *s, const CBS *sigalgs); |
| |
| /* tls1_choose_signing_digest returns a digest for use with |ssl|'s private key |
| * based on the peer's preferences the digests supported. */ |
| const EVP_MD *tls1_choose_signing_digest(SSL *ssl); |
| |
| size_t tls12_get_psigalgs(SSL *s, const uint8_t **psigs); |
| int tls12_check_peer_sigalg(const EVP_MD **out_md, int *out_alert, SSL *s, |
| CBS *cbs, EVP_PKEY *pkey); |
| void ssl_set_client_disabled(SSL *s); |
| |
| int ssl_add_clienthello_use_srtp_ext(SSL *s, uint8_t *p, int *len, int maxlen); |
| int ssl_parse_clienthello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert); |
| int ssl_add_serverhello_use_srtp_ext(SSL *s, uint8_t *p, int *len, int maxlen); |
| int ssl_parse_serverhello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert); |
| |
| #endif /* OPENSSL_HEADER_SSL_INTERNAL_H */ |