diff options
Diffstat (limited to 'openssl/ssl/s3_clnt.c')
| -rw-r--r-- | openssl/ssl/s3_clnt.c | 624 |
1 files changed, 462 insertions, 162 deletions
diff --git a/openssl/ssl/s3_clnt.c b/openssl/ssl/s3_clnt.c index 50308487a..41769feba 100644 --- a/openssl/ssl/s3_clnt.c +++ b/openssl/ssl/s3_clnt.c @@ -56,7 +56,7 @@ * [including the GNU Public Licence.] */ /* ==================================================================== - * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. + * 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 @@ -121,6 +121,32 @@ * 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 <stdio.h> #include "ssl_locl.h" @@ -130,10 +156,6 @@ #include <openssl/objects.h> #include <openssl/evp.h> #include <openssl/md5.h> -#ifdef OPENSSL_FIPS -#include <openssl/fips.h> -#endif - #ifndef OPENSSL_NO_DH #include <openssl/dh.h> #endif @@ -142,18 +164,10 @@ #include <openssl/engine.h> #endif -static SSL_METHOD *ssl3_get_client_method(int ver); +static const SSL_METHOD *ssl3_get_client_method(int ver); static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); -#ifndef OPENSSL_NO_TLSEXT -static int ssl3_check_finished(SSL *s); -#endif -#ifndef OPENSSL_NO_ECDH -static int curve_id2nid(int curve_id); -int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs); -#endif - -static SSL_METHOD *ssl3_get_client_method(int ver) +static const SSL_METHOD *ssl3_get_client_method(int ver) { if (ver == SSL3_VERSION) return(SSLv3_client_method()); @@ -169,8 +183,7 @@ IMPLEMENT_ssl3_meth_func(SSLv3_client_method, int ssl3_connect(SSL *s) { BUF_MEM *buf=NULL; - unsigned long Time=(unsigned long)time(NULL),l; - long num1; + unsigned long Time=(unsigned long)time(NULL); void (*cb)(const SSL *ssl,int type,int val)=NULL; int ret= -1; int new_state,state,skip=0; @@ -265,6 +278,7 @@ int ssl3_connect(SSL *s) case SSL3_ST_CR_SRVR_HELLO_B: ret=ssl3_get_server_hello(s); if (ret <= 0) goto end; + if (s->hit) s->state=SSL3_ST_CR_FINISHED_A; else @@ -289,7 +303,9 @@ int ssl3_connect(SSL *s) } #endif /* Check if it is anon DH/ECDH */ - if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) + /* or PSK */ + if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) && + !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) { ret=ssl3_get_server_certificate(s); if (ret <= 0) goto end; @@ -364,7 +380,6 @@ int ssl3_connect(SSL *s) case SSL3_ST_CW_KEY_EXCH_B: ret=ssl3_send_client_key_exchange(s); if (ret <= 0) goto end; - l=s->s3->tmp.new_cipher->algorithms; /* EAY EAY EAY need to check for DH fix cert * sent back */ /* For TLS, cert_req is set to 2, so a cert chain @@ -385,6 +400,11 @@ int ssl3_connect(SSL *s) s->state=SSL3_ST_CW_CHANGE_A; s->s3->change_cipher_spec=0; } + if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) + { + s->state=SSL3_ST_CW_CHANGE_A; + s->s3->change_cipher_spec=0; + } s->init_num=0; break; @@ -499,16 +519,13 @@ int ssl3_connect(SSL *s) break; case SSL3_ST_CW_FLUSH: - /* number of bytes to be flushed */ - num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); - if (num1 > 0) + s->rwstate=SSL_WRITING; + if (BIO_flush(s->wbio) <= 0) { - s->rwstate=SSL_WRITING; - num1=BIO_flush(s->wbio); - if (num1 <= 0) { ret= -1; goto end; } - s->rwstate=SSL_NOTHING; + ret= -1; + goto end; } - + s->rwstate=SSL_NOTHING; s->state=s->s3->tmp.next_state; break; @@ -594,9 +611,15 @@ int ssl3_client_hello(SSL *s) buf=(unsigned char *)s->init_buf->data; if (s->state == SSL3_ST_CW_CLNT_HELLO_A) { - if ((s->session == NULL) || - (s->session->ssl_version != s->version) || - (s->session->not_resumable)) + SSL_SESSION *sess = s->session; + if ((sess == NULL) || + (sess->ssl_version != s->version) || +#ifdef OPENSSL_NO_TLSEXT + !sess->session_id_length || +#else + (!sess->session_id_length && !sess->tlsext_tick) || +#endif + (sess->not_resumable)) { if (!ssl_get_new_session(s,0)) goto err; @@ -651,7 +674,9 @@ int ssl3_client_hello(SSL *s) #ifdef OPENSSL_NO_COMP *(p++)=1; #else - if (s->ctx->comp_methods == NULL) + + if ((s->options & SSL_OP_NO_COMPRESSION) + || !s->ctx->comp_methods) j=0; else j=sk_SSL_COMP_num(s->ctx->comp_methods); @@ -663,13 +688,21 @@ int ssl3_client_hello(SSL *s) } #endif *(p++)=0; /* Add the NULL method */ + #ifndef OPENSSL_NO_TLSEXT + /* TLS extensions*/ + if (ssl_prepare_clienthello_tlsext(s) <= 0) + { + SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT); + goto err; + } if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL) { SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR); goto err; } -#endif +#endif + l=(p-d); d=buf; *(d++)=SSL3_MT_CLIENT_HELLO; @@ -690,7 +723,7 @@ err: int ssl3_get_server_hello(SSL *s) { STACK_OF(SSL_CIPHER) *sk; - SSL_CIPHER *c; + const SSL_CIPHER *c; unsigned char *p,*d; int i,al,ok; unsigned int j; @@ -708,7 +741,7 @@ int ssl3_get_server_hello(SSL *s) if (!ok) return((int)n); - if ( SSL_version(s) == DTLS1_VERSION) + if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) { if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) { @@ -759,6 +792,23 @@ int ssl3_get_server_hello(SSL *s) goto f_err; } +#ifndef OPENSSL_NO_TLSEXT + /* check if we want to resume the session based on external pre-shared secret */ + if (s->version >= TLS1_VERSION && s->tls_session_secret_cb) + { + SSL_CIPHER *pref_cipher=NULL; + s->session->master_key_length=sizeof(s->session->master_key); + if (s->tls_session_secret_cb(s, s->session->master_key, + &s->session->master_key_length, + NULL, &pref_cipher, + s->tls_session_secret_cb_arg)) + { + s->session->cipher = pref_cipher ? + pref_cipher : ssl_get_cipher_by_char(s, p+j); + } + } +#endif /* OPENSSL_NO_TLSEXT */ + if (j != 0 && j == s->session->session_id_length && memcmp(p,s->session->session_id,j) == 0) { @@ -825,6 +875,8 @@ int ssl3_get_server_hello(SSL *s) } } s->s3->tmp.new_cipher=c; + if (!ssl3_digest_cached_records(s)) + goto f_err; /* lets get the compression algorithm */ /* COMPRESSION */ @@ -835,10 +887,31 @@ int ssl3_get_server_hello(SSL *s) SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); goto f_err; } + /* If compression is disabled we'd better not try to resume a session + * using compression. + */ + if (s->session->compress_meth != 0) + { + al=SSL_AD_INTERNAL_ERROR; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION); + goto f_err; + } #else j= *(p++); + if (s->hit && j != s->session->compress_meth) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED); + goto f_err; + } if (j == 0) comp=NULL; + else if (s->options & SSL_OP_NO_COMPRESSION) + { + al=SSL_AD_ILLEGAL_PARAMETER; + SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED); + goto f_err; + } else comp=ssl3_comp_find(s->ctx->comp_methods,j); @@ -853,9 +926,10 @@ int ssl3_get_server_hello(SSL *s) s->s3->tmp.new_compression=comp; } #endif + #ifndef OPENSSL_NO_TLSEXT /* TLS extensions*/ - if (s->version > SSL3_VERSION) + if (s->version >= SSL3_VERSION) { if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al)) { @@ -871,7 +945,6 @@ int ssl3_get_server_hello(SSL *s) } #endif - if (p != (d+n)) { /* wrong packet length */ @@ -909,7 +982,7 @@ int ssl3_get_server_certificate(SSL *s) if (!ok) return((int)n); if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) || - ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) && + ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) && (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE))) { s->s3->tmp.reuse_message=1; @@ -974,10 +1047,10 @@ int ssl3_get_server_certificate(SSL *s) i=ssl_verify_cert_chain(s,sk); if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0) #ifndef OPENSSL_NO_KRB5 - && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK)) - != (SSL_aKRB5|SSL_kKRB5) + && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && + (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) #endif /* OPENSSL_NO_KRB5 */ - ) + ) { al=ssl_verify_alarm_type(s->verify_result); SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); @@ -1001,15 +1074,15 @@ int ssl3_get_server_certificate(SSL *s) pkey=X509_get_pubkey(x); /* VRS: allow null cert if auth == KRB5 */ - need_cert = ((s->s3->tmp.new_cipher->algorithms - & (SSL_MKEY_MASK|SSL_AUTH_MASK)) - == (SSL_aKRB5|SSL_kKRB5))? 0: 1; + need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && + (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) + ? 0 : 1; #ifdef KSSL_DEBUG - printf("pkey,x = %p, %p\n", (void *)pkey,(void *)x); + printf("pkey,x = %p, %p\n", pkey,x); printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); - printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name, - s->s3->tmp.new_cipher->algorithms, need_cert); + printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name, + s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert); #endif /* KSSL_DEBUG */ if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) @@ -1081,7 +1154,7 @@ int ssl3_get_key_exchange(SSL *s) EVP_MD_CTX md_ctx; unsigned char *param,*p; int al,i,j,param_len,ok; - long n,alg; + long n,alg_k,alg_a; EVP_PKEY *pkey=NULL; #ifndef OPENSSL_NO_RSA RSA *rsa=NULL; @@ -1105,17 +1178,28 @@ int ssl3_get_key_exchange(SSL *s) -1, s->max_cert_list, &ok); - if (!ok) return((int)n); if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) { +#ifndef OPENSSL_NO_PSK + /* In plain PSK ciphersuite, ServerKeyExchange can be + omitted if no identity hint is sent. Set + session->sess_cert anyway to avoid problems + later.*/ + if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK) + { + s->session->sess_cert=ssl_sess_cert_new(); + if (s->ctx->psk_identity_hint) + OPENSSL_free(s->ctx->psk_identity_hint); + s->ctx->psk_identity_hint = NULL; + } +#endif s->s3->tmp.reuse_message=1; return(1); } param=p=(unsigned char *)s->init_msg; - if (s->session->sess_cert != NULL) { #ifndef OPENSSL_NO_RSA @@ -1146,11 +1230,57 @@ int ssl3_get_key_exchange(SSL *s) } param_len=0; - alg=s->s3->tmp.new_cipher->algorithms; + alg_k=s->s3->tmp.new_cipher->algorithm_mkey; + alg_a=s->s3->tmp.new_cipher->algorithm_auth; EVP_MD_CTX_init(&md_ctx); +#ifndef OPENSSL_NO_PSK + if (alg_k & SSL_kPSK) + { + char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1]; + + al=SSL_AD_HANDSHAKE_FAILURE; + n2s(p,i); + param_len=i+2; + /* Store PSK identity hint for later use, hint is used + * in ssl3_send_client_key_exchange. Assume that the + * maximum length of a PSK identity hint can be as + * long as the maximum length of a PSK identity. */ + if (i > PSK_MAX_IDENTITY_LEN) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, + SSL_R_DATA_LENGTH_TOO_LONG); + goto f_err; + } + if (param_len > n) + { + al=SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, + SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH); + goto f_err; + } + /* If received PSK identity hint contains NULL + * characters, the hint is truncated from the first + * NULL. p may not be ending with NULL, so create a + * NULL-terminated string. */ + memcpy(tmp_id_hint, p, i); + memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i); + if (s->ctx->psk_identity_hint != NULL) + OPENSSL_free(s->ctx->psk_identity_hint); + s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint); + if (s->ctx->psk_identity_hint == NULL) + { + SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); + goto f_err; + } + + p+=i; + n-=param_len; + } + else +#endif /* !OPENSSL_NO_PSK */ #ifndef OPENSSL_NO_RSA - if (alg & SSL_kRSA) + if (alg_k & SSL_kRSA) { if ((rsa=RSA_new()) == NULL) { @@ -1189,7 +1319,7 @@ int ssl3_get_key_exchange(SSL *s) n-=param_len; /* this should be because we are using an export cipher */ - if (alg & SSL_aRSA) + if (alg_a & SSL_aRSA) pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); else { @@ -1204,7 +1334,7 @@ int ssl3_get_key_exchange(SSL *s) ; #endif #ifndef OPENSSL_NO_DH - else if (alg & SSL_kEDH) + else if (alg_k & SSL_kEDH) { if ((dh=DH_new()) == NULL) { @@ -1258,14 +1388,14 @@ int ssl3_get_key_exchange(SSL *s) n-=param_len; #ifndef OPENSSL_NO_RSA - if (alg & SSL_aRSA) + if (alg_a & SSL_aRSA) pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); #else if (0) ; #endif #ifndef OPENSSL_NO_DSA - else if (alg & SSL_aDSS) + else if (alg_a & SSL_aDSS) pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); #endif /* else anonymous DH, so no certificate or pkey. */ @@ -1273,7 +1403,7 @@ int ssl3_get_key_exchange(SSL *s) s->session->sess_cert->peer_dh_tmp=dh; dh=NULL; } - else if ((alg & SSL_kDHr) || (alg & SSL_kDHd)) + else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd)) { al=SSL_AD_ILLEGAL_PARAMETER; SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); @@ -1282,7 +1412,7 @@ int ssl3_get_key_exchange(SSL *s) #endif /* !OPENSSL_NO_DH */ #ifndef OPENSSL_NO_ECDH - else if (alg & SSL_kECDHE) + else if (alg_k & SSL_kEECDH) { EC_GROUP *ngroup; const EC_GROUP *group; @@ -1305,7 +1435,7 @@ int ssl3_get_key_exchange(SSL *s) param_len=3; if ((param_len > n) || (*p != NAMED_CURVE_TYPE) || - ((curve_nid = curve_id2nid(*(p + 2))) == 0)) + ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)) { al=SSL_AD_INTERNAL_ERROR; SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); @@ -1366,11 +1496,11 @@ int ssl3_get_key_exchange(SSL *s) */ if (0) ; #ifndef OPENSSL_NO_RSA - else if (alg & SSL_aRSA) + else if (alg_a & SSL_aRSA) pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); #endif #ifndef OPENSSL_NO_ECDSA - else if (alg & SSL_aECDSA) + else if (alg_a & SSL_aECDSA) pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); #endif /* else anonymous ECDH, so no certificate or pkey. */ @@ -1381,19 +1511,13 @@ int ssl3_get_key_exchange(SSL *s) EC_POINT_free(srvr_ecpoint); srvr_ecpoint = NULL; } - else if (alg & SSL_kECDH) + else if (alg_k) { al=SSL_AD_UNEXPECTED_MESSAGE; SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); goto f_err; } #endif /* !OPENSSL_NO_ECDH */ - if (alg & SSL_aFZA) - { - al=SSL_AD_HANDSHAKE_FAILURE; - SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); - goto f_err; - } /* p points to the next byte, there are 'n' bytes left */ @@ -1422,8 +1546,6 @@ int ssl3_get_key_exchange(SSL *s) q=md_buf; for (num=2; num > 0; num--) { - EVP_MD_CTX_set_flags(&md_ctx, - EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); EVP_DigestInit_ex(&md_ctx,(num == 2) ?s->ctx->md5:s->ctx->sha1, NULL); EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); @@ -1494,12 +1616,13 @@ int ssl3_get_key_exchange(SSL *s) } else { - /* still data left over */ - if (!(alg & SSL_aNULL)) + if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK)) + /* aNULL or kPSK do not need public keys */ { SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); goto err; } + /* still data left over */ if (n != 0) { al=SSL_AD_DECODE_ERROR; @@ -1569,8 +1692,7 @@ int ssl3_get_certificate_request(SSL *s) /* TLS does not like anon-DH with client cert */ if (s->version > SSL3_VERSION) { - l=s->s3->tmp.new_cipher->algorithms; - if (l & SSL_aNULL) + if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); @@ -1715,6 +1837,7 @@ int ssl3_get_new_session_ticket(SSL *s) SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); goto f_err; } + p=d=(unsigned char *)s->init_msg; n2l(p, s->session->tlsext_tick_lifetime_hint); n2s(p, ticklen); @@ -1738,7 +1861,28 @@ int ssl3_get_new_session_ticket(SSL *s) } memcpy(s->session->tlsext_tick, p, ticklen); s->session->tlsext_ticklen = ticklen; - + /* There are two ways to detect a resumed ticket sesion. + * One is to set an appropriate session ID and then the server + * must return a match in ServerHello. This allows the normal + * client session ID matching to work and we know much + * earlier that the ticket has been accepted. + * + * The other way is to set zero length session ID when the + * ticket is presented and rely on the handshake to determine + * session resumption. + * + * We choose the former approach because this fits in with + * assumptions elsewhere in OpenSSL. The session ID is set + * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the + * ticket. + */ + EVP_Digest(p, ticklen, + s->session->session_id, &s->session->session_id_length, +#ifndef OPENSSL_NO_SHA256 + EVP_sha256(), NULL); +#else + EVP_sha1(), NULL); +#endif ret=1; return(ret); f_err: @@ -1750,8 +1894,7 @@ err: int ssl3_get_cert_status(SSL *s) { int ok, al; - unsigned long resplen; - long n; + unsigned long resplen,n; const unsigned char *p; n=s->method->ssl_get_message(s, @@ -1777,7 +1920,7 @@ int ssl3_get_cert_status(SSL *s) goto f_err; } n2l3(p, resplen); - if (resplen + 4 != (unsigned long)n) + if (resplen + 4 != n) { al = SSL_AD_DECODE_ERROR; SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); @@ -1846,7 +1989,7 @@ int ssl3_send_client_key_exchange(SSL *s) { unsigned char *p,*d; int n; - unsigned long l; + unsigned long alg_k; #ifndef OPENSSL_NO_RSA unsigned char *q; EVP_PKEY *pkey=NULL; @@ -1868,12 +2011,12 @@ int ssl3_send_client_key_exchange(SSL *s) d=(unsigned char *)s->init_buf->data; p= &(d[4]); - l=s->s3->tmp.new_cipher->algorithms; + alg_k=s->s3->tmp.new_cipher->algorithm_mkey; /* Fool emacs indentation */ if (0) {} #ifndef OPENSSL_NO_RSA - else if (l & SSL_kRSA) + else if (alg_k & SSL_kRSA) { RSA *rsa; unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; @@ -1932,7 +2075,7 @@ int ssl3_send_client_key_exchange(SSL *s) } #endif #ifndef OPENSSL_NO_KRB5 - else if (l & SSL_kKRB5) + else if (alg_k & SSL_kKRB5) { krb5_error_code krb5rc; KSSL_CTX *kssl_ctx = s->kssl_ctx; @@ -1940,7 +2083,7 @@ int ssl3_send_client_key_exchange(SSL *s) krb5_data *enc_ticket; krb5_data authenticator, *authp = NULL; EVP_CIPHER_CTX ciph_ctx; - EVP_CIPHER *enc = NULL; + const EVP_CIPHER *enc = NULL; unsigned char iv[EVP_MAX_IV_LENGTH]; unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH @@ -1951,7 +2094,7 @@ int ssl3_send_client_key_exchange(SSL *s) #ifdef KSSL_DEBUG printf("ssl3_send_client_key_exchange(%lx & %lx)\n", - l, SSL_kKRB5); + alg_k, SSL_kKRB5); #endif /* KSSL_DEBUG */ authp = NULL; @@ -2043,7 +2186,7 @@ int ssl3_send_client_key_exchange(SSL *s) sizeof tmp_buf); EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); outl += padl; - if (outl > sizeof epms) + if (outl > (int)sizeof epms) { SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); goto err; @@ -2057,7 +2200,7 @@ int ssl3_send_client_key_exchange(SSL *s) n+=outl + 2; s->session->master_key_length= - s->method->ssl3_enc->generate_master_secret(s, + s->method->ssl3_enc->generate_master_secret(s, s->session->master_key, tmp_buf, sizeof tmp_buf); @@ -2066,7 +2209,7 @@ int ssl3_send_client_key_exchange(SSL *s) } #endif #ifndef OPENSSL_NO_DH - else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) + else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) { DH *dh_srvr,*dh_clnt; @@ -2075,7 +2218,7 @@ int ssl3_send_client_key_exchange(SSL *s) ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); goto err; - } + } if (s->session->sess_cert->peer_dh_tmp != NULL) dh_srvr=s->session->sess_cert->peer_dh_tmp; @@ -2130,7 +2273,7 @@ int ssl3_send_client_key_exchange(SSL *s) #endif #ifndef OPENSSL_NO_ECDH - else if ((l & SSL_kECDH) || (l & SSL_kECDHE)) + else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) { const EC_GROUP *srvr_group = NULL; EC_KEY *tkey; @@ -2142,7 +2285,7 @@ int ssl3_send_client_key_exchange(SSL *s) * computation as part of client certificate? * If so, set ecdh_clnt_cert to 1. */ - if ((l & SSL_kECDH) && (s->cert != NULL)) + if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL)) { /* XXX: For now, we do not support client * authentication using ECDH certificates. @@ -2314,6 +2457,178 @@ int ssl3_send_client_key_exchange(SSL *s) EVP_PKEY_free(srvr_pub_pkey); } #endif /* !OPENSSL_NO_ECDH */ + else if (alg_k & SSL_kGOST) + { + /* GOST key exchange message creation */ + EVP_PKEY_CTX *pkey_ctx; + X509 *peer_cert; + size_t msglen; + unsigned int md_len; + int keytype; + unsigned char premaster_secret[32],shared_ukm[32], tmp[256]; + EVP_MD_CTX *ukm_hash; + EVP_PKEY *pub_key; + + /* Get server sertificate PKEY and create ctx from it */ + peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509; + if (!peer_cert) + peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509; + if (!peer_cert) { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER); + goto err; + } + + pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL); + /* If we have send a certificate, and certificate key + + * parameters match those of server certificate, use + * certificate key for key exchange + */ + + /* Otherwise, generate ephemeral key pair */ + + EVP_PKEY_encrypt_init(pkey_ctx); + /* Generate session key */ + RAND_bytes(premaster_secret,32); + /* If we have client certificate, use its secret as peer key */ + if (s->s3->tmp.cert_req && s->cert->key->privatekey) { + if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) { + /* If there was an error - just ignore it. Ephemeral key + * would be used + */ + ERR_clear_error(); + } + } + /* Compute shared IV and store it in algorithm-specific + * context data */ + ukm_hash = EVP_MD_CTX_create(); + EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94)); + EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE); + EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE); + EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len); + EVP_MD_CTX_destroy(ukm_hash); + if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV, + 8,shared_ukm)<0) { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + SSL_R_LIBRARY_BUG); + goto err; + } + /* Make GOST keytransport blob message */ + /*Encapsulate it into sequence */ + *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED; + msglen=255; + if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + SSL_R_LIBRARY_BUG); + goto err; + } + if (msglen >= 0x80) + { + *(p++)=0x81; + *(p++)= msglen & 0xff; + n=msglen+3; + } + else + { + *(p++)= msglen & 0xff; + n=msglen+2; + } + memcpy(p, tmp, msglen); + /* Check if pubkey from client certificate was used */ + if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) + { + /* Set flag "skip certificate verify" */ + s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY; + } + EVP_PKEY_CTX_free(pkey_ctx); + s->session->master_key_length= + s->method->ssl3_enc->generate_master_secret(s, + s->session->master_key,premaster_secret,32); + EVP_PKEY_free(pub_key); + + } +#ifndef OPENSSL_NO_PSK + else if (alg_k & SSL_kPSK) + { + char identity[PSK_MAX_IDENTITY_LEN]; + unsigned char *t = NULL; + unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4]; + unsigned int pre_ms_len = 0, psk_len = 0; + int psk_err = 1; + + n = 0; + if (s->psk_client_callback == NULL) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + SSL_R_PSK_NO_CLIENT_CB); + goto err; + } + + psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint, + identity, PSK_MAX_IDENTITY_LEN, + psk_or_pre_ms, sizeof(psk_or_pre_ms)); + if (psk_len > PSK_MAX_PSK_LEN) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + ERR_R_INTERNAL_ERROR); + goto psk_err; + } + else if (psk_len == 0) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + SSL_R_PSK_IDENTITY_NOT_FOUND); + goto psk_err; + } + + /* create PSK pre_master_secret */ + pre_ms_len = 2+psk_len+2+psk_len; + t = psk_or_pre_ms; + memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len); + s2n(psk_len, t); + memset(t, 0, psk_len); + t+=psk_len; + s2n(psk_len, t); + + if (s->session->psk_identity_hint != NULL) + OPENSSL_free(s->session->psk_identity_hint); + s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint); + if (s->ctx->psk_identity_hint != NULL && + s->session->psk_identity_hint == NULL) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + ERR_R_MALLOC_FAILURE); + goto psk_err; + } + + if (s->session->psk_identity != NULL) + OPENSSL_free(s->session->psk_identity); + s->session->psk_identity = BUF_strdup(identity); + if (s->session->psk_identity == NULL) + { + SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, + ERR_R_MALLOC_FAILURE); + goto psk_err; + } + + s->session->master_key_length = + s->method->ssl3_enc->generate_master_secret(s, + s->session->master_key, + psk_or_pre_ms, pre_ms_len); + n = strlen(identity); + s2n(n, p); + memcpy(p, identity, n); + n+=2; + psk_err = 0; + psk_err: + OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN); + OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms)); + if (psk_err != 0) + { + ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); + goto err; + } + } +#endif else { ssl3_send_alert(s, SSL3_AL_FATAL, @@ -2350,28 +2665,37 @@ int ssl3_send_client_verify(SSL *s) unsigned char *p,*d; unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; EVP_PKEY *pkey; + EVP_PKEY_CTX *pctx=NULL; #ifndef OPENSSL_NO_RSA unsigned u=0; #endif unsigned long n; -#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA) int j; -#endif if (s->state == SSL3_ST_CW_CERT_VRFY_A) { d=(unsigned char *)s->init_buf->data; p= &(d[4]); pkey=s->cert->key->privatekey; - - s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), - &(data[MD5_DIGEST_LENGTH])); - +/* Create context from key and test if sha1 is allowed as digest */ + pctx = EVP_PKEY_CTX_new(pkey,NULL); + EVP_PKEY_sign_init(pctx); + if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0) + { + s->method->ssl3_enc->cert_verify_mac(s, + NID_sha1, + &(data[MD5_DIGEST_LENGTH])); + } + else + { + ERR_clear_error(); + } #ifndef OPENSSL_NO_RSA if (pkey->type == EVP_PKEY_RSA) { s->method->ssl3_enc->cert_verify_mac(s, - &(s->s3->finish_dgst1),&(data[0])); + NID_md5, + &(data[0])); if (RSA_sign(NID_md5_sha1, data, MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, &(p[2]), &u, pkey->pkey.rsa) <= 0 ) @@ -2417,10 +2741,30 @@ int ssl3_send_client_verify(SSL *s) } else #endif - { + if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001) + { + unsigned char signbuf[64]; + int i; + size_t sigsize=64; + s->method->ssl3_enc->cert_verify_mac(s, + NID_id_GostR3411_94, + data); + if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) { + SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, + ERR_R_INTERNAL_ERROR); + goto err; + } + for (i=63,j=0; i>=0; j++, i--) { + p[2+j]=signbuf[i]; + } + s2n(j,p); + n=j+2; + } + else + { SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); goto err; - } + } *(d++)=SSL3_MT_CERTIFICATE_VERIFY; l2n3(n,d); @@ -2428,8 +2772,10 @@ int ssl3_send_client_verify(SSL *s) s->init_num=(int)n+4; s->init_off=0; } + EVP_PKEY_CTX_free(pctx); return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); err: + EVP_PKEY_CTX_free(pctx); return(-1); } @@ -2514,7 +2860,7 @@ int ssl3_send_client_certificate(SSL *s) int ssl3_check_cert_and_algorithm(SSL *s) { int i,idx; - long algs; + long alg_k,alg_a; EVP_PKEY *pkey=NULL; SESS_CERT *sc; #ifndef OPENSSL_NO_RSA @@ -2524,14 +2870,14 @@ int ssl3_check_cert_and_algorithm(SSL *s) DH *dh; #endif - sc=s->session->sess_cert; - - algs=s->s3->tmp.new_cipher->algorithms; + alg_k=s->s3->tmp.new_cipher->algorithm_mkey; + alg_a=s->s3->tmp.new_cipher->algorithm_auth; /* we don't have a certificate */ - if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) + if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK)) return(1); + sc=s->session->sess_cert; if (sc == NULL) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); @@ -2551,11 +2897,11 @@ int ssl3_check_cert_and_algorithm(SSL *s) #ifndef OPENSSL_NO_ECDH if (idx == SSL_PKEY_ECC) { - if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, + if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, s->s3->tmp.new_cipher) == 0) { /* check failed */ SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); - goto f_err; + goto f_err; } else { @@ -2569,20 +2915,20 @@ int ssl3_check_cert_and_algorithm(SSL *s) /* Check that we have a certificate if we require one */ - if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) + if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); goto f_err; } #ifndef OPENSSL_NO_DSA - else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) + else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); goto f_err; } #endif #ifndef OPENSSL_NO_RSA - if ((algs & SSL_kRSA) && + if ((alg_k & SSL_kRSA) && !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); @@ -2590,19 +2936,19 @@ int ssl3_check_cert_and_algorithm(SSL *s) } #endif #ifndef OPENSSL_NO_DH - if ((algs & SSL_kEDH) && + if ((alg_k & SSL_kEDH) && !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); goto f_err; } - else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) + else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); goto f_err; } #ifndef OPENSSL_NO_DSA - else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) + else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) { SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); goto f_err; @@ -2613,7 +2959,7 @@ int ssl3_check_cert_and_algorithm(SSL *s) if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) { #ifndef OPENSSL_NO_RSA - if (algs & SSL_kRSA) + if (alg_k & SSL_kRSA) { if (rsa == NULL || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) @@ -2625,7 +2971,7 @@ int ssl3_check_cert_and_algorithm(SSL *s) else #endif #ifndef OPENSSL_NO_DH - if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) + if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) { if (dh == NULL || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) @@ -2648,64 +2994,18 @@ err: return(0); } - -#ifndef OPENSSL_NO_ECDH -/* This is the complement of nid2curve_id in s3_srvr.c. */ -static int curve_id2nid(int curve_id) -{ - /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001) - * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */ - static int nid_list[26] = - { - 0, - NID_sect163k1, /* sect163k1 (1) */ - NID_sect163r1, /* sect163r1 (2) */ - NID_sect163r2, /* sect163r2 (3) */ - NID_sect193r1, /* sect193r1 (4) */ - NID_sect193r2, /* sect193r2 (5) */ - NID_sect233k1, /* sect233k1 (6) */ - NID_sect233r1, /* sect233r1 (7) */ - NID_sect239k1, /* sect239k1 (8) */ - NID_sect283k1, /* sect283k1 (9) */ - NID_sect283r1, /* sect283r1 (10) */ - NID_sect409k1, /* sect409k1 (11) */ - NID_sect409r1, /* sect409r1 (12) */ - NID_sect571k1, /* sect571k1 (13) */ - NID_sect571r1, /* sect571r1 (14) */ - NID_secp160k1, /* secp160k1 (15) */ - NID_secp160r1, /* secp160r1 (16) */ - NID_secp160r2, /* secp160r2 (17) */ - NID_secp192k1, /* secp192k1 (18) */ - NID_X9_62_prime192v1, /* secp192r1 (19) */ - NID_secp224k1, /* secp224k1 (20) */ - NID_secp224r1, /* secp224r1 (21) */ - NID_secp256k1, /* secp256k1 (22) */ - NID_X9_62_prime256v1, /* secp256r1 (23) */ - NID_secp384r1, /* secp384r1 (24) */ - NID_secp521r1 /* secp521r1 (25) */ - }; - - if ((curve_id < 1) || (curve_id > 25)) return 0; - - return nid_list[curve_id]; -} -#endif - /* Check to see if handshake is full or resumed. Usually this is just a * case of checking to see if a cache hit has occurred. In the case of * session tickets we have to check the next message to be sure. */ #ifndef OPENSSL_NO_TLSEXT -static int ssl3_check_finished(SSL *s) +int ssl3_check_finished(SSL *s) { int ok; long n; - /* If we have no ticket or session ID is non-zero length (a match of - * a non-zero session length would never reach here) it cannot be a - * resumed session. - */ - if (!s->session->tlsext_tick || s->session->session_id_length) + /* If we have no ticket it cannot be a resumed session. */ + if (!s->session->tlsext_tick) return 1; /* this function is called when we really expect a Certificate * message, so permit appropriate message length */ |