/* 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. * * Portions of the attached software ("Contribution") are developed by * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. * * The Contribution is licensed pursuant to the OpenSSL open source * license provided above. * * ECC cipher suite support in OpenSSL originally written by * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories. * */ /* ==================================================================== * 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. */ #include #include #include #include #include #include #include #include #include #include "internal.h" const SSL3_ENC_METHOD SSLv3_enc_data = { ssl3_prf, tls1_setup_key_block, tls1_generate_master_secret, tls1_change_cipher_state, ssl3_final_finish_mac, ssl3_cert_verify_mac, SSL3_MD_CLIENT_FINISHED_CONST, 4, SSL3_MD_SERVER_FINISHED_CONST, 4, ssl3_alert_code, tls1_export_keying_material, 0, }; int ssl3_supports_cipher(const SSL_CIPHER *cipher) { return 1; } int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len) { uint8_t *p = (uint8_t *)s->init_buf->data; *(p++) = htype; l2n3(len, p); s->init_num = (int)len + SSL3_HM_HEADER_LENGTH; s->init_off = 0; /* Add the message to the handshake hash. */ return ssl3_finish_mac(s, (uint8_t *)s->init_buf->data, s->init_num); } int ssl3_handshake_write(SSL *s) { return ssl3_do_write(s, SSL3_RT_HANDSHAKE); } int ssl3_new(SSL *s) { SSL3_STATE *s3; s3 = OPENSSL_malloc(sizeof *s3); if (s3 == NULL) { goto err; } memset(s3, 0, sizeof *s3); memset(s3->rrec.seq_num, 0, sizeof(s3->rrec.seq_num)); s->s3 = s3; /* Set the version to the highest supported version for TLS. This controls the * initial state of |s->enc_method| and what the API reports as the version * prior to negotiation. * * TODO(davidben): This is fragile and confusing. */ s->version = TLS1_2_VERSION; return 1; err: return 0; } void ssl3_free(SSL *s) { if (s == NULL || s->s3 == NULL) { return; } BUF_MEM_free(s->s3->sniff_buffer); ssl3_cleanup_key_block(s); ssl3_release_read_buffer(s); ssl3_release_write_buffer(s); DH_free(s->s3->tmp.dh); EC_KEY_free(s->s3->tmp.ecdh); sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free); OPENSSL_free(s->s3->tmp.certificate_types); OPENSSL_free(s->s3->tmp.peer_ecpointformatlist); OPENSSL_free(s->s3->tmp.peer_ellipticcurvelist); OPENSSL_free(s->s3->tmp.peer_psk_identity_hint); BIO_free(s->s3->handshake_buffer); ssl3_free_digest_list(s); OPENSSL_free(s->s3->alpn_selected); OPENSSL_cleanse(s->s3, sizeof *s->s3); OPENSSL_free(s->s3); s->s3 = NULL; } static int ssl3_set_req_cert_type(CERT *c, const uint8_t *p, size_t len); int SSL_session_reused(const SSL *ssl) { return ssl->hit; } int SSL_total_renegotiations(const SSL *ssl) { return ssl->s3->total_renegotiations; } int SSL_num_renegotiations(const SSL *ssl) { return SSL_total_renegotiations(ssl); } int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx) { return 0; } int SSL_need_rsa(const SSL *ssl) { return 0; } int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa) { return 1; } int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa) { return 1; } int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh) { DH_free(ctx->cert->dh_tmp); ctx->cert->dh_tmp = DHparams_dup(dh); if (ctx->cert->dh_tmp == NULL) { OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_tmp_dh, ERR_R_DH_LIB); return 0; } return 1; } int SSL_set_tmp_dh(SSL *ssl, const DH *dh) { DH_free(ssl->cert->dh_tmp); ssl->cert->dh_tmp = DHparams_dup(dh); if (ssl->cert->dh_tmp == NULL) { OPENSSL_PUT_ERROR(SSL, SSL_set_tmp_dh, ERR_R_DH_LIB); return 0; } return 1; } int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key) { if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) { OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_tmp_ecdh, ERR_R_PASSED_NULL_PARAMETER); return 0; } ctx->cert->ecdh_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key)); return 1; } int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key) { if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) { OPENSSL_PUT_ERROR(SSL, SSL_set_tmp_ecdh, ERR_R_PASSED_NULL_PARAMETER); return 0; } ssl->cert->ecdh_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key)); return 1; } int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx) { ctx->tlsext_channel_id_enabled = 1; return 1; } int SSL_enable_tls_channel_id(SSL *ssl) { ssl->tlsext_channel_id_enabled = 1; return 1; } int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx, EVP_PKEY *private_key) { ctx->tlsext_channel_id_enabled = 1; if (EVP_PKEY_id(private_key) != EVP_PKEY_EC || EVP_PKEY_bits(private_key) != 256) { OPENSSL_PUT_ERROR(SSL, SSL_CTX_set1_tls_channel_id, SSL_R_CHANNEL_ID_NOT_P256); return 0; } EVP_PKEY_free(ctx->tlsext_channel_id_private); ctx->tlsext_channel_id_private = EVP_PKEY_up_ref(private_key); return 1; } int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key) { ssl->tlsext_channel_id_enabled = 1; if (EVP_PKEY_id(private_key) != EVP_PKEY_EC || EVP_PKEY_bits(private_key) != 256) { OPENSSL_PUT_ERROR(SSL, SSL_set1_tls_channel_id, SSL_R_CHANNEL_ID_NOT_P256); return 0; } EVP_PKEY_free(ssl->tlsext_channel_id_private); ssl->tlsext_channel_id_private = EVP_PKEY_up_ref(private_key); return 1; } size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out, size_t max_out) { if (!ssl->s3->tlsext_channel_id_valid) { return 0; } memcpy(out, ssl->s3->tlsext_channel_id, (max_out < 64) ? max_out : 64); return 64; } int SSL_set_tlsext_host_name(SSL *ssl, const char *name) { OPENSSL_free(ssl->tlsext_hostname); ssl->tlsext_hostname = NULL; if (name == NULL) { return 1; } if (strlen(name) > TLSEXT_MAXLEN_host_name) { OPENSSL_PUT_ERROR(SSL, SSL_set_tlsext_host_name, SSL_R_SSL3_EXT_INVALID_SERVERNAME); return 0; } ssl->tlsext_hostname = BUF_strdup(name); if (ssl->tlsext_hostname == NULL) { OPENSSL_PUT_ERROR(SSL, SSL_set_tlsext_host_name, ERR_R_MALLOC_FAILURE); return 0; } return 1; } long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg) { int ret = 0; switch (cmd) { case SSL_CTRL_CHAIN: if (larg) { return ssl_cert_set1_chain(s->cert, (STACK_OF(X509) *)parg); } else { return ssl_cert_set0_chain(s->cert, (STACK_OF(X509) *)parg); } case SSL_CTRL_CHAIN_CERT: if (larg) { return ssl_cert_add1_chain_cert(s->cert, (X509 *)parg); } else { return ssl_cert_add0_chain_cert(s->cert, (X509 *)parg); } case SSL_CTRL_GET_CHAIN_CERTS: *(STACK_OF(X509) **)parg = s->cert->key->chain; ret = 1; break; case SSL_CTRL_SELECT_CURRENT_CERT: return ssl_cert_select_current(s->cert, (X509 *)parg); case SSL_CTRL_GET_CURVES: { const uint16_t *clist = s->s3->tmp.peer_ellipticcurvelist; size_t clistlen = s->s3->tmp.peer_ellipticcurvelist_length; if (parg) { size_t i; int *cptr = parg; int nid; for (i = 0; i < clistlen; i++) { nid = tls1_ec_curve_id2nid(clist[i]); if (nid != NID_undef) { cptr[i] = nid; } else { cptr[i] = TLSEXT_nid_unknown | clist[i]; } } } return (int)clistlen; } case SSL_CTRL_SET_CURVES: return tls1_set_curves(&s->tlsext_ellipticcurvelist, &s->tlsext_ellipticcurvelist_length, parg, larg); case SSL_CTRL_SET_SIGALGS: return tls1_set_sigalgs(s->cert, parg, larg, 0); case SSL_CTRL_SET_CLIENT_SIGALGS: return tls1_set_sigalgs(s->cert, parg, larg, 1); case SSL_CTRL_GET_CLIENT_CERT_TYPES: { const uint8_t **pctype = parg; if (s->server || !s->s3->tmp.cert_req) { return 0; } if (pctype) { *pctype = s->s3->tmp.certificate_types; } return (int)s->s3->tmp.num_certificate_types; } case SSL_CTRL_SET_CLIENT_CERT_TYPES: if (!s->server) { return 0; } return ssl3_set_req_cert_type(s->cert, parg, larg); case SSL_CTRL_BUILD_CERT_CHAIN: return ssl_build_cert_chain(s->cert, s->ctx->cert_store, larg); case SSL_CTRL_SET_VERIFY_CERT_STORE: return ssl_cert_set_cert_store(s->cert, parg, 0, larg); case SSL_CTRL_SET_CHAIN_CERT_STORE: return ssl_cert_set_cert_store(s->cert, parg, 1, larg); case SSL_CTRL_GET_SERVER_TMP_KEY: if (s->server || !s->session || !s->session->sess_cert) { return 0; } else { SESS_CERT *sc; EVP_PKEY *ptmp; int rv = 0; sc = s->session->sess_cert; if (!sc->peer_dh_tmp && !sc->peer_ecdh_tmp) { return 0; } ptmp = EVP_PKEY_new(); if (!ptmp) { return 0; } if (sc->peer_dh_tmp) { rv = EVP_PKEY_set1_DH(ptmp, sc->peer_dh_tmp); } else if (sc->peer_ecdh_tmp) { rv = EVP_PKEY_set1_EC_KEY(ptmp, sc->peer_ecdh_tmp); } if (rv) { *(EVP_PKEY **)parg = ptmp; return 1; } EVP_PKEY_free(ptmp); return 0; } case SSL_CTRL_GET_EC_POINT_FORMATS: { const uint8_t **pformat = parg; if (!s->s3->tmp.peer_ecpointformatlist) { return 0; } *pformat = s->s3->tmp.peer_ecpointformatlist; return (int)s->s3->tmp.peer_ecpointformatlist_length; } default: break; } return ret; } long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) { switch (cmd) { case SSL_CTRL_SET_TLSEXT_TICKET_KEYS: case SSL_CTRL_GET_TLSEXT_TICKET_KEYS: { uint8_t *keys = parg; if (!keys) { return 48; } if (larg != 48) { OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, SSL_R_INVALID_TICKET_KEYS_LENGTH); return 0; } if (cmd == SSL_CTRL_SET_TLSEXT_TICKET_KEYS) { memcpy(ctx->tlsext_tick_key_name, keys, 16); memcpy(ctx->tlsext_tick_hmac_key, keys + 16, 16); memcpy(ctx->tlsext_tick_aes_key, keys + 32, 16); } else { memcpy(keys, ctx->tlsext_tick_key_name, 16); memcpy(keys + 16, ctx->tlsext_tick_hmac_key, 16); memcpy(keys + 32, ctx->tlsext_tick_aes_key, 16); } return 1; } case SSL_CTRL_SET_CURVES: return tls1_set_curves(&ctx->tlsext_ellipticcurvelist, &ctx->tlsext_ellipticcurvelist_length, parg, larg); case SSL_CTRL_SET_SIGALGS: return tls1_set_sigalgs(ctx->cert, parg, larg, 0); case SSL_CTRL_SET_CLIENT_SIGALGS: return tls1_set_sigalgs(ctx->cert, parg, larg, 1); case SSL_CTRL_SET_CLIENT_CERT_TYPES: return ssl3_set_req_cert_type(ctx->cert, parg, larg); case SSL_CTRL_BUILD_CERT_CHAIN: return ssl_build_cert_chain(ctx->cert, ctx->cert_store, larg); case SSL_CTRL_SET_VERIFY_CERT_STORE: return ssl_cert_set_cert_store(ctx->cert, parg, 0, larg); case SSL_CTRL_SET_CHAIN_CERT_STORE: return ssl_cert_set_cert_store(ctx->cert, parg, 1, larg); case SSL_CTRL_EXTRA_CHAIN_CERT: if (ctx->extra_certs == NULL) { ctx->extra_certs = sk_X509_new_null(); if (ctx->extra_certs == NULL) { return 0; } } sk_X509_push(ctx->extra_certs, (X509 *)parg); break; case SSL_CTRL_GET_EXTRA_CHAIN_CERTS: if (ctx->extra_certs == NULL && larg == 0) { *(STACK_OF(X509) **)parg = ctx->cert->key->chain; } else { *(STACK_OF(X509) **)parg = ctx->extra_certs; } break; case SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS: sk_X509_pop_free(ctx->extra_certs, X509_free); ctx->extra_certs = NULL; break; case SSL_CTRL_CHAIN: if (larg) { return ssl_cert_set1_chain(ctx->cert, (STACK_OF(X509) *)parg); } else { return ssl_cert_set0_chain(ctx->cert, (STACK_OF(X509) *)parg); } case SSL_CTRL_CHAIN_CERT: if (larg) { return ssl_cert_add1_chain_cert(ctx->cert, (X509 *)parg); } else { return ssl_cert_add0_chain_cert(ctx->cert, (X509 *)parg); } case SSL_CTRL_GET_CHAIN_CERTS: *(STACK_OF(X509) **)parg = ctx->cert->key->chain; break; case SSL_CTRL_SELECT_CURRENT_CERT: return ssl_cert_select_current(ctx->cert, (X509 *)parg); default: return 0; } return 1; } int SSL_CTX_set_tlsext_servername_callback( SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg)) { ctx->tlsext_servername_callback = callback; return 1; } int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg) { ctx->tlsext_servername_arg = arg; return 1; } int SSL_CTX_set_tlsext_ticket_key_cb( SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv, EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx, int encrypt)) { ctx->tlsext_ticket_key_cb = callback; return 1; } struct ssl_cipher_preference_list_st *ssl_get_cipher_preferences(SSL *s) { if (s->cipher_list != NULL) { return s->cipher_list; } if (s->version >= TLS1_1_VERSION && s->ctx != NULL && s->ctx->cipher_list_tls11 != NULL) { return s->ctx->cipher_list_tls11; } if (s->ctx != NULL && s->ctx->cipher_list != NULL) { return s->ctx->cipher_list; } return NULL; } const SSL_CIPHER *ssl3_choose_cipher( SSL *s, STACK_OF(SSL_CIPHER) *clnt, struct ssl_cipher_preference_list_st *server_pref) { const SSL_CIPHER *c, *ret = NULL; STACK_OF(SSL_CIPHER) *srvr = server_pref->ciphers, *prio, *allow; size_t i; int ok; size_t cipher_index; uint32_t alg_k, alg_a, mask_k, mask_a; /* in_group_flags will either be NULL, or will point to an array of bytes * which indicate equal-preference groups in the |prio| stack. See the * comment about |in_group_flags| in the |ssl_cipher_preference_list_st| * struct. */ const uint8_t *in_group_flags; /* group_min contains the minimal index so far found in a group, or -1 if no * such value exists yet. */ int group_min = -1; if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) { prio = srvr; in_group_flags = server_pref->in_group_flags; allow = clnt; } else { prio = clnt; in_group_flags = NULL; allow = srvr; } ssl_get_compatible_server_ciphers(s, &mask_k, &mask_a); for (i = 0; i < sk_SSL_CIPHER_num(prio); i++) { c = sk_SSL_CIPHER_value(prio, i); ok = 1; /* Skip TLS v1.2 only ciphersuites if not supported */ if ((c->algorithm_ssl & SSL_TLSV1_2) && !SSL_USE_TLS1_2_CIPHERS(s)) { ok = 0; } alg_k = c->algorithm_mkey; alg_a = c->algorithm_auth; ok = ok && (alg_k & mask_k) && (alg_a & mask_a); if (ok && sk_SSL_CIPHER_find(allow, &cipher_index, c)) { if (in_group_flags != NULL && in_group_flags[i] == 1) { /* This element of |prio| is in a group. Update the minimum index found * so far and continue looking. */ if (group_min == -1 || (size_t)group_min > cipher_index) { group_min = cipher_index; } } else { if (group_min != -1 && (size_t)group_min < cipher_index) { cipher_index = group_min; } ret = sk_SSL_CIPHER_value(allow, cipher_index); break; } } if (in_group_flags != NULL && in_group_flags[i] == 0 && group_min != -1) { /* We are about to leave a group, but we found a match in it, so that's * our answer. */ ret = sk_SSL_CIPHER_value(allow, group_min); break; } } return ret; } int ssl3_get_req_cert_type(SSL *s, uint8_t *p) { int ret = 0; const uint8_t *sig; size_t i, siglen; int have_rsa_sign = 0; int have_ecdsa_sign = 0; /* If we have custom certificate types set, use them */ if (s->cert->client_certificate_types) { memcpy(p, s->cert->client_certificate_types, s->cert->num_client_certificate_types); return s->cert->num_client_certificate_types; } /* get configured sigalgs */ siglen = tls12_get_psigalgs(s, &sig); for (i = 0; i < siglen; i += 2, sig += 2) { switch (sig[1]) { case TLSEXT_signature_rsa: have_rsa_sign = 1; break; case TLSEXT_signature_ecdsa: have_ecdsa_sign = 1; break; } } if (have_rsa_sign) { p[ret++] = SSL3_CT_RSA_SIGN; } /* ECDSA certs can be used with RSA cipher suites as well so we don't need to * check for SSL_kECDH or SSL_kECDHE. */ if (s->version >= TLS1_VERSION && have_ecdsa_sign) { p[ret++] = TLS_CT_ECDSA_SIGN; } return ret; } static int ssl3_set_req_cert_type(CERT *c, const uint8_t *p, size_t len) { OPENSSL_free(c->client_certificate_types); c->client_certificate_types = NULL; c->num_client_certificate_types = 0; if (!p || !len) { return 1; } if (len > 0xff) { return 0; } c->client_certificate_types = BUF_memdup(p, len); if (!c->client_certificate_types) { return 0; } c->num_client_certificate_types = len; return 1; } /* If we are using default SHA1+MD5 algorithms switch to new SHA256 PRF and * handshake macs if required. */ uint32_t ssl_get_algorithm2(SSL *s) { static const uint32_t kMask = SSL_HANDSHAKE_MAC_DEFAULT; uint32_t alg2 = s->s3->tmp.new_cipher->algorithm2; if (s->enc_method->enc_flags & SSL_ENC_FLAG_SHA256_PRF && (alg2 & kMask) == kMask) { return SSL_HANDSHAKE_MAC_SHA256; } return alg2; }