diff options
Diffstat (limited to 'openssl/ssl/ssl_ciph.c')
| -rw-r--r-- | openssl/ssl/ssl_ciph.c | 1019 |
1 files changed, 690 insertions, 329 deletions
diff --git a/openssl/ssl/ssl_ciph.c b/openssl/ssl/ssl_ciph.c index 52f91cfe6..bee3507ea 100644 --- a/openssl/ssl/ssl_ciph.c +++ b/openssl/ssl/ssl_ciph.c @@ -56,7 +56,7 @@ * [including the GNU Public Licence.] */ /* ==================================================================== - * Copyright (c) 1998-2006 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 @@ -113,12 +113,41 @@ * 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. + */ + #include <stdio.h> #include <openssl/objects.h> #ifndef OPENSSL_NO_COMP #include <openssl/comp.h> #endif - +#ifndef OPENSSL_NO_ENGINE +#include <openssl/engine.h> +#endif #include "ssl_locl.h" #define SSL_ENC_DES_IDX 0 @@ -126,18 +155,18 @@ #define SSL_ENC_RC4_IDX 2 #define SSL_ENC_RC2_IDX 3 #define SSL_ENC_IDEA_IDX 4 -#define SSL_ENC_eFZA_IDX 5 -#define SSL_ENC_NULL_IDX 6 -#define SSL_ENC_AES128_IDX 7 -#define SSL_ENC_AES256_IDX 8 -#define SSL_ENC_CAMELLIA128_IDX 9 -#define SSL_ENC_CAMELLIA256_IDX 10 +#define SSL_ENC_NULL_IDX 5 +#define SSL_ENC_AES128_IDX 6 +#define SSL_ENC_AES256_IDX 7 +#define SSL_ENC_CAMELLIA128_IDX 8 +#define SSL_ENC_CAMELLIA256_IDX 9 +#define SSL_ENC_GOST89_IDX 10 #define SSL_ENC_SEED_IDX 11 #define SSL_ENC_NUM_IDX 12 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ - NULL,NULL,NULL,NULL,NULL,NULL, + NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, }; #define SSL_COMP_NULL_IDX 0 @@ -148,9 +177,30 @@ static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; #define SSL_MD_MD5_IDX 0 #define SSL_MD_SHA1_IDX 1 -#define SSL_MD_NUM_IDX 2 +#define SSL_MD_GOST94_IDX 2 +#define SSL_MD_GOST89MAC_IDX 3 +/*Constant SSL_MAX_DIGEST equal to size of digests array should be + * defined in the + * ssl_locl.h */ +#define SSL_MD_NUM_IDX SSL_MAX_DIGEST static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ - NULL,NULL, + NULL,NULL,NULL,NULL + }; +/* PKEY_TYPE for GOST89MAC is known in advance, but, because + * implementation is engine-provided, we'll fill it only if + * corresponding EVP_PKEY_METHOD is found + */ +static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={ + EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef + }; + +static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={ + 0,0,0,0 + }; + +static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={ + SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA, + SSL_HANDSHAKE_MAC_GOST94,0 }; #define CIPHER_ADD 1 @@ -161,72 +211,144 @@ static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ typedef struct cipher_order_st { - SSL_CIPHER *cipher; + const SSL_CIPHER *cipher; int active; int dead; struct cipher_order_st *next,*prev; } CIPHER_ORDER; static const SSL_CIPHER cipher_aliases[]={ - /* Don't include eNULL unless specifically enabled. */ - /* Don't include ECC in ALL because these ciphers are not yet official. */ - {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */ - /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */ - {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */ - {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0}, - {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */ - {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0}, - {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0}, - {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */ - {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0}, - {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0}, - {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0}, - {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0}, - {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, - {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0}, - - {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0}, -#ifndef OPENSSL_NO_IDEA - {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, -#endif - {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, - - {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, - {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, - {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, - - {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, - {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, - {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, - {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, - {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, - - {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, - {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, - {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, - - {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, - {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, - {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, - {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, - {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, - {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, - {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, - {0,SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0,0,0,0,SSL_FIPS|SSL_STRONG_NONE}, + /* "ALL" doesn't include eNULL (must be specifically enabled) */ + {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0}, + /* "COMPLEMENTOFALL" */ + {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0}, + + /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */ + {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0}, + + /* key exchange aliases + * (some of those using only a single bit here combine + * multiple key exchange algs according to the RFCs, + * e.g. kEDH combines DHE_DSS and DHE_RSA) */ + {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0}, + {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0}, + + /* server authentication aliases */ + {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, + {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0}, + {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0}, + {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0}, + {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0}, + + /* aliases combining key exchange and server authentication */ + {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, + {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0}, + {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0}, + {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0}, + + + /* symmetric encryption aliases */ + {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0}, + {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0}, + {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0}, + {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0}, + {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0}, + {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0}, + {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, + {0,SSL_TXT_AES128,0, 0,0,SSL_AES128,0,0,0,0,0,0}, + {0,SSL_TXT_AES256,0, 0,0,SSL_AES256,0,0,0,0,0,0}, + {0,SSL_TXT_AES,0, 0,0,SSL_AES128|SSL_AES256,0,0,0,0,0,0}, + {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0}, + {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0}, + {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0}, + + /* MAC aliases */ + {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0}, + {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, + {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, + {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0}, + {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0}, + + /* protocol version aliases */ + {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0}, + {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0}, + {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0}, + + /* export flag */ + {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, + {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, + + /* strength classes */ + {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0}, + {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0}, + {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0}, + {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0}, + {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0}, + /* FIPS 140-2 approved ciphersuite */ + {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0}, }; +/* Search for public key algorithm with given name and + * return its pkey_id if it is available. Otherwise return 0 + */ +#ifdef OPENSSL_NO_ENGINE + +static int get_optional_pkey_id(const char *pkey_name) + { + const EVP_PKEY_ASN1_METHOD *ameth; + int pkey_id=0; + ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1); + if (ameth) + { + EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); + } + return pkey_id; + } + +#else + +static int get_optional_pkey_id(const char *pkey_name) + { + const EVP_PKEY_ASN1_METHOD *ameth; + ENGINE *tmpeng = NULL; + int pkey_id=0; + ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1); + if (ameth) + { + EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); + } + if (tmpeng) ENGINE_finish(tmpeng); + return pkey_id; + } + +#endif void ssl_load_ciphers(void) { @@ -252,16 +374,37 @@ void ssl_load_ciphers(void) EVP_get_cipherbyname(SN_camellia_128_cbc); ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= EVP_get_cipherbyname(SN_camellia_256_cbc); + ssl_cipher_methods[SSL_ENC_GOST89_IDX]= + EVP_get_cipherbyname(SN_gost89_cnt); ssl_cipher_methods[SSL_ENC_SEED_IDX]= EVP_get_cipherbyname(SN_seed_cbc); ssl_digest_methods[SSL_MD_MD5_IDX]= EVP_get_digestbyname(SN_md5); + ssl_mac_secret_size[SSL_MD_MD5_IDX]= + EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); + OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); ssl_digest_methods[SSL_MD_SHA1_IDX]= EVP_get_digestbyname(SN_sha1); - } - + ssl_mac_secret_size[SSL_MD_SHA1_IDX]= + EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); + OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); + ssl_digest_methods[SSL_MD_GOST94_IDX]= + EVP_get_digestbyname(SN_id_GostR3411_94); + if (ssl_digest_methods[SSL_MD_GOST94_IDX]) + { + ssl_mac_secret_size[SSL_MD_GOST94_IDX]= + EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); + OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); + } + ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= + EVP_get_digestbyname(SN_id_Gost28147_89_MAC); + ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); + if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { + ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32; + } + } #ifndef OPENSSL_NO_COMP static int sk_comp_cmp(const SSL_COMP * const *a, @@ -316,10 +459,10 @@ static void load_builtin_compressions(void) #endif int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, - const EVP_MD **md, SSL_COMP **comp) + const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) { int i; - SSL_CIPHER *c; + const SSL_CIPHER *c; c=s->cipher; if (c == NULL) return(0); @@ -344,7 +487,7 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, if ((enc == NULL) || (md == NULL)) return(0); - switch (c->algorithms & SSL_ENC_MASK) + switch (c->algorithm_enc) { case SSL_DES: i=SSL_ENC_DES_IDX; @@ -364,26 +507,24 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, case SSL_eNULL: i=SSL_ENC_NULL_IDX; break; - case SSL_AES: - switch(c->alg_bits) - { - case 128: i=SSL_ENC_AES128_IDX; break; - case 256: i=SSL_ENC_AES256_IDX; break; - default: i=-1; break; - } + case SSL_AES128: + i=SSL_ENC_AES128_IDX; break; - case SSL_CAMELLIA: - switch(c->alg_bits) - { - case 128: i=SSL_ENC_CAMELLIA128_IDX; break; - case 256: i=SSL_ENC_CAMELLIA256_IDX; break; - default: i=-1; break; - } + case SSL_AES256: + i=SSL_ENC_AES256_IDX; + break; + case SSL_CAMELLIA128: + i=SSL_ENC_CAMELLIA128_IDX; + break; + case SSL_CAMELLIA256: + i=SSL_ENC_CAMELLIA256_IDX; + break; + case SSL_eGOST2814789CNT: + i=SSL_ENC_GOST89_IDX; break; case SSL_SEED: i=SSL_ENC_SEED_IDX; break; - default: i= -1; break; @@ -399,7 +540,7 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, *enc=ssl_cipher_methods[i]; } - switch (c->algorithms & SSL_MAC_MASK) + switch (c->algorithm_mac) { case SSL_MD5: i=SSL_MD_MD5_IDX; @@ -407,21 +548,48 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, case SSL_SHA1: i=SSL_MD_SHA1_IDX; break; + case SSL_GOST94: + i = SSL_MD_GOST94_IDX; + break; + case SSL_GOST89MAC: + i = SSL_MD_GOST89MAC_IDX; + break; default: i= -1; break; } if ((i < 0) || (i > SSL_MD_NUM_IDX)) - *md=NULL; + { + *md=NULL; + if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; + if (mac_secret_size!=NULL) *mac_secret_size = 0; + + } else + { *md=ssl_digest_methods[i]; + if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; + if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i]; + } - if ((*enc != NULL) && (*md != NULL)) + if ((*enc != NULL) && (*md != NULL) && (!mac_pkey_type||*mac_pkey_type != NID_undef)) return(1); else return(0); } +int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) +{ + if (idx <0||idx>=SSL_MD_NUM_IDX) + { + return 0; + } + if (ssl_handshake_digest_flag[idx]==0) return 0; + *mask = ssl_handshake_digest_flag[idx]; + *md = ssl_digest_methods[idx]; + return 1; +} + #define ITEM_SEP(a) \ (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) @@ -433,7 +601,7 @@ static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, *head=curr->next; if (curr->prev != NULL) curr->prev->next=curr->next; - if (curr->next != NULL) /* should always be true */ + if (curr->next != NULL) curr->next->prev=curr->prev; (*tail)->next=curr; curr->prev= *tail; @@ -441,69 +609,105 @@ static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, *tail=curr; } -struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9, - * where 128-bit and 256-bit algorithms simply will get - * separate bits. */ - unsigned long mask; /* everything except m256 */ - unsigned long m256; /* applies to 256-bit algorithms only */ -}; +static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, + CIPHER_ORDER **tail) + { + if (curr == *head) return; + if (curr == *tail) + *tail=curr->prev; + if (curr->next != NULL) + curr->next->prev=curr->prev; + if (curr->prev != NULL) + curr->prev->next=curr->next; + (*head)->prev=curr; + curr->next= *head; + curr->prev=NULL; + *head=curr; + } -static struct disabled_masks ssl_cipher_get_disabled(void) +static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) { - unsigned long mask; - unsigned long m256; - struct disabled_masks ret; + *mkey = 0; + *auth = 0; + *enc = 0; + *mac = 0; + *ssl = 0; - mask = SSL_kFZA; #ifdef OPENSSL_NO_RSA - mask |= SSL_aRSA|SSL_kRSA; + *mkey |= SSL_kRSA; + *auth |= SSL_aRSA; #endif #ifdef OPENSSL_NO_DSA - mask |= SSL_aDSS; + *auth |= SSL_aDSS; #endif + *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ + *auth |= SSL_aDH; #ifdef OPENSSL_NO_DH - mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; + *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; + *auth |= SSL_aDH; #endif #ifdef OPENSSL_NO_KRB5 - mask |= SSL_kKRB5|SSL_aKRB5; + *mkey |= SSL_kKRB5; + *auth |= SSL_aKRB5; +#endif +#ifdef OPENSSL_NO_ECDSA + *auth |= SSL_aECDSA; #endif #ifdef OPENSSL_NO_ECDH - mask |= SSL_kECDH|SSL_kECDHE; + *mkey |= SSL_kECDHe|SSL_kECDHr; + *auth |= SSL_aECDH; #endif +#ifdef OPENSSL_NO_PSK + *mkey |= SSL_kPSK; + *auth |= SSL_aPSK; +#endif + /* Check for presence of GOST 34.10 algorithms, and if they + * do not present, disable appropriate auth and key exchange */ + if (!get_optional_pkey_id("gost94")) { + *auth |= SSL_aGOST94; + } + if (!get_optional_pkey_id("gost2001")) { + *auth |= SSL_aGOST01; + } + /* Disable GOST key exchange if no GOST signature algs are available * */ + if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { + *mkey |= SSL_kGOST; + } #ifdef SSL_FORBID_ENULL - mask |= SSL_eNULL; + *enc |= SSL_eNULL; #endif + + + + *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; + *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; + *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; + *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; + *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; + *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; + *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; + *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; + *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; + *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; + *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; + + *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; + *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; + *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; + *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; - mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; - mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; - mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; - mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; - mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; - mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; - mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; - - mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; - mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; - - /* finally consider algorithms where mask and m256 differ */ - m256 = mask; - mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; - mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; - m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0; - m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0; - - ret.mask = mask; - ret.m256 = m256; - return ret; } static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, - int num_of_ciphers, unsigned long mask, unsigned long m256, - CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, - CIPHER_ORDER **tail_p) + int num_of_ciphers, + unsigned long disabled_mkey, unsigned long disabled_auth, + unsigned long disabled_enc, unsigned long disabled_mac, + unsigned long disabled_ssl, + CIPHER_ORDER *co_list, + CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) { int i, co_list_num; - SSL_CIPHER *c; + const SSL_CIPHER *c; /* * We have num_of_ciphers descriptions compiled in, depending on the @@ -517,14 +721,13 @@ static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, for (i = 0; i < num_of_ciphers; i++) { c = ssl_method->get_cipher(i); -#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) /* drop those that use any of that is not available */ -#ifdef OPENSSL_FIPS - if ((c != NULL) && c->valid && !IS_MASKED(c) - && (!FIPS_mode() || (c->algo_strength & SSL_FIPS))) -#else - if ((c != NULL) && c->valid && !IS_MASKED(c)) -#endif + if ((c != NULL) && c->valid && + !(c->algorithm_mkey & disabled_mkey) && + !(c->algorithm_auth & disabled_auth) && + !(c->algorithm_enc & disabled_enc) && + !(c->algorithm_mac & disabled_mac) && + !(c->algorithm_ssl & disabled_ssl)) { co_list[co_list_num].cipher = c; co_list[co_list_num].next = NULL; @@ -532,7 +735,7 @@ static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, co_list[co_list_num].active = 0; co_list_num++; #ifdef KSSL_DEBUG - printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); + printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); #endif /* KSSL_DEBUG */ /* if (!sk_push(ca_list,(char *)c)) goto err; @@ -543,29 +746,45 @@ static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, /* * Prepare linked list from list entries */ - for (i = 1; i < co_list_num - 1; i++) - { - co_list[i].prev = &(co_list[i-1]); - co_list[i].next = &(co_list[i+1]); - } if (co_list_num > 0) { - (*head_p) = &(co_list[0]); - (*head_p)->prev = NULL; - (*head_p)->next = &(co_list[1]); - (*tail_p) = &(co_list[co_list_num - 1]); - (*tail_p)->prev = &(co_list[co_list_num - 2]); - (*tail_p)->next = NULL; + co_list[0].prev = NULL; + + if (co_list_num > 1) + { + co_list[0].next = &co_list[1]; + + for (i = 1; i < co_list_num - 1; i++) + { + co_list[i].prev = &co_list[i - 1]; + co_list[i].next = &co_list[i + 1]; + } + + co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; + } + + co_list[co_list_num - 1].next = NULL; + + *head_p = &co_list[0]; + *tail_p = &co_list[co_list_num - 1]; } } -static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, - int num_of_group_aliases, unsigned long mask, +static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, + int num_of_group_aliases, + unsigned long disabled_mkey, unsigned long disabled_auth, + unsigned long disabled_enc, unsigned long disabled_mac, + unsigned long disabled_ssl, CIPHER_ORDER *head) { CIPHER_ORDER *ciph_curr; - SSL_CIPHER **ca_curr; + const SSL_CIPHER **ca_curr; int i; + unsigned long mask_mkey = ~disabled_mkey; + unsigned long mask_auth = ~disabled_auth; + unsigned long mask_enc = ~disabled_enc; + unsigned long mask_mac = ~disabled_mac; + unsigned long mask_ssl = ~disabled_ssl; /* * First, add the real ciphers as already collected @@ -581,84 +800,118 @@ static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, /* * Now we add the available ones from the cipher_aliases[] table. - * They represent either an algorithm, that must be fully - * supported (not match any bit in mask) or represent a cipher - * strength value (will be added in any case because algorithms=0). + * They represent either one or more algorithms, some of which + * in any affected category must be supported (set in enabled_mask), + * or represent a cipher strength value (will be added in any case because algorithms=0). */ for (i = 0; i < num_of_group_aliases; i++) { - if ((i == 0) || /* always fetch "ALL" */ - !(cipher_aliases[i].algorithms & mask)) - { - *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); - ca_curr++; - } + unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; + unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; + unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; + unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; + unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; + + if (algorithm_mkey) + if ((algorithm_mkey & mask_mkey) == 0) + continue; + + if (algorithm_auth) + if ((algorithm_auth & mask_auth) == 0) + continue; + + if (algorithm_enc) + if ((algorithm_enc & mask_enc) == 0) + continue; + + if (algorithm_mac) + if ((algorithm_mac & mask_mac) == 0) + continue; + + if (algorithm_ssl) + if ((algorithm_ssl & mask_ssl) == 0) + continue; + + *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); + ca_curr++; } *ca_curr = NULL; /* end of list */ } -static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, - unsigned long algorithms, unsigned long mask, - unsigned long algo_strength, unsigned long mask_strength, - int rule, int strength_bits, CIPHER_ORDER *co_list, +static void ssl_cipher_apply_rule(unsigned long cipher_id, + unsigned long alg_mkey, unsigned long alg_auth, + unsigned long alg_enc, unsigned long alg_mac, + unsigned long alg_ssl, + unsigned long algo_strength, + int rule, int strength_bits, CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) { - CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; - SSL_CIPHER *cp; - unsigned long ma, ma_s; + CIPHER_ORDER *head, *tail, *curr, *curr2, *last; + const SSL_CIPHER *cp; + int reverse = 0; #ifdef CIPHER_DEBUG - printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", - rule, algorithms, mask, algo_strength, mask_strength, - strength_bits); + printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", + rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); #endif - curr = head = *head_p; - curr2 = head; - tail2 = tail = *tail_p; + if (rule == CIPHER_DEL) + reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ + + head = *head_p; + tail = *tail_p; + + if (reverse) + { + curr = tail; + last = head; + } + else + { + curr = head; + last = tail; + } + + curr2 = curr; for (;;) { - if ((curr == NULL) || (curr == tail2)) break; + if ((curr == NULL) || (curr == last)) break; curr = curr2; - curr2 = curr->next; + curr2 = reverse ? curr->prev : curr->next; cp = curr->cipher; - /* If explicit cipher suite, match only that one for its own protocol version. - * Usual selection criteria will be used for similar ciphersuites from other version! */ - - if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) + /* + * Selection criteria is either the value of strength_bits + * or the algorithms used. + */ + if (strength_bits >= 0) { - if (cp->id != cipher_id) + if (strength_bits != cp->strength_bits) continue; } - - /* - * Selection criteria is either the number of strength_bits - * or the algorithm used. - */ - else if (strength_bits == -1) + else { - ma = mask & cp->algorithms; - ma_s = mask_strength & cp->algo_strength; - #ifdef CIPHER_DEBUG - printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); - printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); + printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength); #endif - /* - * Select: if none of the mask bit was met from the - * cipher or not all of the bits were met, the - * selection does not apply. - */ - if (((ma == 0) && (ma_s == 0)) || - ((ma & algorithms) != ma) || - ((ma_s & algo_strength) != ma_s)) - continue; /* does not apply */ + + if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) + continue; + if (alg_auth && !(alg_auth & cp->algorithm_auth)) + continue; + if (alg_enc && !(alg_enc & cp->algorithm_enc)) + continue; + if (alg_mac && !(alg_mac & cp->algorithm_mac)) + continue; + if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) + continue; + if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) + continue; + if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) + continue; } - else if (strength_bits != cp->strength_bits) - continue; /* does not apply */ #ifdef CIPHER_DEBUG printf("Action = %d\n", rule); @@ -667,38 +920,37 @@ static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_ver /* add the cipher if it has not been added yet. */ if (rule == CIPHER_ADD) { + /* reverse == 0 */ if (!curr->active) { - int add_this_cipher = 1; - - if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) - { - /* Make sure "ECCdraft" ciphersuites are activated only if - * *explicitly* requested, but not implicitly (such as - * as part of the "AES" alias). */ - - add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; - } - - if (add_this_cipher) - { - ll_append_tail(&head, curr, &tail); - curr->active = 1; - } + ll_append_tail(&head, curr, &tail); + curr->active = 1; } } /* Move the added cipher to this location */ else if (rule == CIPHER_ORD) { + /* reverse == 0 */ if (curr->active) { ll_append_tail(&head, curr, &tail); } } else if (rule == CIPHER_DEL) - curr->active = 0; + { + /* reverse == 1 */ + if (curr->active) + { + /* most recently deleted ciphersuites get best positions + * for any future CIPHER_ADD (note that the CIPHER_DEL loop + * works in reverse to maintain the order) */ + ll_append_head(&head, curr, &tail); + curr->active = 0; + } + } else if (rule == CIPHER_KILL) { + /* reverse == 0 */ if (head == curr) head = curr->next; else @@ -719,8 +971,7 @@ static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_ver *tail_p = tail; } -static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, - CIPHER_ORDER **head_p, +static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) { int max_strength_bits, i, *number_uses; @@ -743,10 +994,10 @@ static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); if (!number_uses) - { + { SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); return(0); - } + } memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); /* @@ -765,21 +1016,20 @@ static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, */ for (i = max_strength_bits; i >= 0; i--) if (number_uses[i] > 0) - ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, - co_list, head_p, tail_p); + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); OPENSSL_free(number_uses); return(1); } static int ssl_cipher_process_rulestr(const char *rule_str, - CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, - CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) + CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, + const SSL_CIPHER **ca_list) { - unsigned long algorithms, mask, algo_strength, mask_strength; + unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; const char *l, *start, *buf; int j, multi, found, rule, retval, ok, buflen; - unsigned long cipher_id = 0, ssl_version = 0; + unsigned long cipher_id = 0; char ch; retval = 1; @@ -807,7 +1057,12 @@ static int ssl_cipher_process_rulestr(const char *rule_str, continue; } - algorithms = mask = algo_strength = mask_strength = 0; + alg_mkey = 0; + alg_auth = 0; + alg_enc = 0; + alg_mac = 0; + alg_ssl = 0; + algo_strength = 0; start=l; for (;;) @@ -868,10 +1123,9 @@ static int ssl_cipher_process_rulestr(const char *rule_str, * sufficient, we have to strncmp() anyway. (We cannot * use strcmp(), because buf is not '\0' terminated.) */ - j = found = 0; - cipher_id = 0; - ssl_version = 0; - while (ca_list[j]) + j = found = 0; + cipher_id = 0; + while (ca_list[j]) { if (!strncmp(buf, ca_list[j]->name, buflen) && (ca_list[j]->name[buflen] == '\0')) @@ -882,31 +1136,100 @@ static int ssl_cipher_process_rulestr(const char *rule_str, else j++; } + if (!found) break; /* ignore this entry */ - /* New algorithms: - * 1 - any old restrictions apply outside new mask - * 2 - any new restrictions apply outside old mask - * 3 - enforce old & new where masks intersect - */ - algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ - (ca_list[j]->algorithms & ~mask) | /* 2 */ - (algorithms & ca_list[j]->algorithms); /* 3 */ - mask |= ca_list[j]->mask; - algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | - (ca_list[j]->algo_strength & ~mask_strength) | - (algo_strength & ca_list[j]->algo_strength); - mask_strength |= ca_list[j]->mask_strength; - - /* explicit ciphersuite found */ + if (ca_list[j]->algorithm_mkey) + { + if (alg_mkey) + { + alg_mkey &= ca_list[j]->algorithm_mkey; + if (!alg_mkey) { found = 0; break; } + } + else + alg_mkey = ca_list[j]->algorithm_mkey; + } + + if (ca_list[j]->algorithm_auth) + { + if (alg_auth) + { + alg_auth &= ca_list[j]->algorithm_auth; + if (!alg_auth) { found = 0; break; } + } + else + alg_auth = ca_list[j]->algorithm_auth; + } + + if (ca_list[j]->algorithm_enc) + { + if (alg_enc) + { + alg_enc &= ca_list[j]->algorithm_enc; + if (!alg_enc) { found = 0; break; } + } + else + alg_enc = ca_list[j]->algorithm_enc; + } + + if (ca_list[j]->algorithm_mac) + { + if (alg_mac) + { + alg_mac &= ca_list[j]->algorithm_mac; + if (!alg_mac) { found = 0; break; } + } + else + alg_mac = ca_list[j]->algorithm_mac; + } + + if (ca_list[j]->algo_strength & SSL_EXP_MASK) + { + if (algo_strength & SSL_EXP_MASK) + { + algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; + if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } + } + else + algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; + } + + if (ca_list[j]->algo_strength & SSL_STRONG_MASK) + { + if (algo_strength & SSL_STRONG_MASK) + { + algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; + if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } + } + else + algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; + } + if (ca_list[j]->valid) { + /* explicit ciphersuite found; its protocol version + * does not become part of the search pattern!*/ + cipher_id = ca_list[j]->id; - ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; - break; } + else + { + /* not an explicit ciphersuite; only in this case, the + * protocol version is considered part of the search pattern */ + if (ca_list[j]->algorithm_ssl) + { + if (alg_ssl) + { + alg_ssl &= ca_list[j]->algorithm_ssl; + if (!alg_ssl) { found = 0; break; } + } + else + alg_ssl = ca_list[j]->algorithm_ssl; + } + } + if (!multi) break; } @@ -918,8 +1241,7 @@ static int ssl_cipher_process_rulestr(const char *rule_str, ok = 0; if ((buflen == 8) && !strncmp(buf, "STRENGTH", 8)) - ok = ssl_cipher_strength_sort(co_list, - head_p, tail_p); + ok = ssl_cipher_strength_sort(head_p, tail_p); else SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); @@ -936,9 +1258,9 @@ static int ssl_cipher_process_rulestr(const char *rule_str, } else if (found) { - ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, - algo_strength, mask_strength, rule, -1, - co_list, head_p, tail_p); + ssl_cipher_apply_rule(cipher_id, + alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, + rule, -1, head_p, tail_p); } else { @@ -957,12 +1279,11 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, const char *rule_str) { int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; - unsigned long disabled_mask; - unsigned long disabled_m256; + unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; const char *rule_p; CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; - SSL_CIPHER **ca_list = NULL; + const SSL_CIPHER **ca_list = NULL; /* * Return with error if nothing to do. @@ -974,12 +1295,7 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, * To reduce the work to do we only want to process the compiled * in algorithms, so we first get the mask of disabled ciphers. */ - { - struct disabled_masks d; - d = ssl_cipher_get_disabled(); - disabled_mask = d.mask; - disabled_m256 = d.m256; - } + ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); /* * Now we have to collect the available ciphers from the compiled @@ -997,8 +1313,52 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, return(NULL); /* Failure */ } - ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, - disabled_m256, co_list, &head, &tail); + ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, + disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, + co_list, &head, &tail); + + + /* Now arrange all ciphers by preference: */ + + /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ + ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); + ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); + + /* AES is our preferred symmetric cipher */ + ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); + + /* Temporarily enable everything else for sorting */ + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); + + /* Low priority for MD5 */ + ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* Move anonymous ciphers to the end. Usually, these will remain disabled. + * (For applications that allow them, they aren't too bad, but we prefer + * authenticated ciphers.) */ + ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* Move ciphers without forward secrecy to the end */ + ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ + ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* RC4 is sort-of broken -- move the the end */ + ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* Now sort by symmetric encryption strength. The above ordering remains + * in force within each class */ + if (!ssl_cipher_strength_sort(&head, &tail)) + { + OPENSSL_free(co_list); + return NULL; + } + + /* Now disable everything (maintaining the ordering!) */ + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); + /* * We also need cipher aliases for selecting based on the rule_str. @@ -1010,8 +1370,7 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, */ num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; - ca_list = - (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); + ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); if (ca_list == NULL) { OPENSSL_free(co_list); @@ -1019,7 +1378,8 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, return(NULL); /* Failure */ } ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, - (disabled_mask & disabled_m256), head); + disabled_mkey, disabled_auth, disabled_enc, + disabled_mac, disabled_ssl, head); /* * If the rule_string begins with DEFAULT, apply the default rule @@ -1030,23 +1390,23 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, if (strncmp(rule_str,"DEFAULT",7) == 0) { ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, - co_list, &head, &tail, ca_list); + &head, &tail, ca_list); rule_p += 7; if (*rule_p == ':') rule_p++; } if (ok && (strlen(rule_p) > 0)) - ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, - ca_list); + ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); - OPENSSL_free(ca_list); /* Not needed anymore */ + OPENSSL_free((void *)ca_list); /* Not needed anymore */ if (!ok) { /* Rule processing failure */ OPENSSL_free(co_list); return(NULL); } + /* * Allocate new "cipherstack" for the result, return with error * if we cannot get one. @@ -1063,11 +1423,7 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, */ for (curr = head; curr != NULL; curr = curr->next) { -#ifdef OPENSSL_FIPS - if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) -#else if (curr->active) -#endif { sk_SSL_CIPHER_push(cipherstack, curr->cipher); #ifdef CIPHER_DEBUG @@ -1091,22 +1447,28 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, *cipher_list_by_id = tmp_cipher_list; (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); + sk_SSL_CIPHER_sort(*cipher_list_by_id); return(cipherstack); } -char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) +char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) { int is_export,pkl,kl; const char *ver,*exp_str; const char *kx,*au,*enc,*mac; - unsigned long alg,alg2,alg_s; + unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2,alg_s; #ifdef KSSL_DEBUG - static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; + static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; #else static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; #endif /* KSSL_DEBUG */ - alg=cipher->algorithms; + alg_mkey = cipher->algorithm_mkey; + alg_auth = cipher->algorithm_auth; + alg_enc = cipher->algorithm_enc; + alg_mac = cipher->algorithm_mac; + alg_ssl = cipher->algorithm_ssl; + alg_s=cipher->algo_strength; alg2=cipher->algorithm2; @@ -1115,14 +1477,14 @@ char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) kl=SSL_C_EXPORT_KEYLENGTH(cipher); exp_str=is_export?" export":""; - if (alg & SSL_SSLV2) + if (alg_ssl & SSL_SSLV2) ver="SSLv2"; - else if (alg & SSL_SSLV3) + else if (alg_ssl & SSL_SSLV3) ver="SSLv3"; else ver="unknown"; - switch (alg&SSL_MKEY_MASK) + switch (alg_mkey) { case SSL_kRSA: kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; @@ -1133,25 +1495,29 @@ char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) case SSL_kDHd: kx="DH/DSS"; break; - case SSL_kKRB5: /* VRS */ - case SSL_KRB5: /* VRS */ - kx="KRB5"; - break; - case SSL_kFZA: - kx="Fortezza"; + case SSL_kKRB5: + kx="KRB5"; break; case SSL_kEDH: kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; break; - case SSL_kECDH: - case SSL_kECDHE: - kx=is_export?"ECDH(<=163)":"ECDH"; + case SSL_kECDHr: + kx="ECDH/RSA"; + break; + case SSL_kECDHe: + kx="ECDH/ECDSA"; + break; + case SSL_kEECDH: + kx="ECDH"; + break; + case SSL_kPSK: + kx="PSK"; break; default: kx="unknown"; } - switch (alg&SSL_AUTH_MASK) + switch (alg_auth) { case SSL_aRSA: au="RSA"; @@ -1162,23 +1528,27 @@ char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) case SSL_aDH: au="DH"; break; - case SSL_aKRB5: /* VRS */ - case SSL_KRB5: /* VRS */ - au="KRB5"; - break; - case SSL_aFZA: + case SSL_aKRB5: + au="KRB5"; + break; + case SSL_aECDH: + au="ECDH"; + break; case SSL_aNULL: au="None"; break; case SSL_aECDSA: au="ECDSA"; break; + case SSL_aPSK: + au="PSK"; + break; default: au="unknown"; break; } - switch (alg&SSL_ENC_MASK) + switch (alg_enc) { case SSL_DES: enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; @@ -1196,39 +1566,30 @@ char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) case SSL_IDEA: enc="IDEA(128)"; break; - case SSL_eFZA: - enc="Fortezza"; - break; case SSL_eNULL: enc="None"; break; - case SSL_AES: - switch(cipher->strength_bits) - { - case 128: enc="AES(128)"; break; - case 192: enc="AES(192)"; break; - case 256: enc="AES(256)"; break; - default: enc="AES(?""?""?)"; break; - } + case SSL_AES128: + enc="AES(128)"; break; - case SSL_CAMELLIA: - switch(cipher->strength_bits) - { - case 128: enc="Camellia(128)"; break; - case 256: enc="Camellia(256)"; break; - default: enc="Camellia(?""?""?)"; break; - } + case SSL_AES256: + enc="AES(256)"; + break; + case SSL_CAMELLIA128: + enc="Camellia(128)"; + break; + case SSL_CAMELLIA256: + enc="Camellia(256)"; break; case SSL_SEED: enc="SEED(128)"; break; - default: enc="unknown"; break; } - switch (alg&SSL_MAC_MASK) + switch (alg_mac) { case SSL_MD5: mac="MD5"; @@ -1251,7 +1612,7 @@ char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) return("Buffer too small"); #ifdef KSSL_DEBUG - BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); + BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); #else BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); #endif /* KSSL_DEBUG */ |