diff options
Diffstat (limited to 'crypto/heimdal/lib/gssapi/krb5/verify_mic.c')
| -rw-r--r-- | crypto/heimdal/lib/gssapi/krb5/verify_mic.c | 136 |
1 files changed, 73 insertions, 63 deletions
diff --git a/crypto/heimdal/lib/gssapi/krb5/verify_mic.c b/crypto/heimdal/lib/gssapi/krb5/verify_mic.c index 52381af..3123787 100644 --- a/crypto/heimdal/lib/gssapi/krb5/verify_mic.c +++ b/crypto/heimdal/lib/gssapi/krb5/verify_mic.c @@ -1,39 +1,39 @@ /* - * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * All rights reserved. + * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: + * 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. + * 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. + * 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. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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. + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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. */ -#include "krb5/gsskrb5_locl.h" +#include "gsskrb5_locl.h" -RCSID("$Id: verify_mic.c 19031 2006-11-13 18:02:57Z lha $"); +#ifdef HEIM_WEAK_CRYPTO static OM_uint32 verify_mic_des @@ -44,13 +44,14 @@ verify_mic_des const gss_buffer_t token_buffer, gss_qop_t * qop_state, krb5_keyblock *key, - char *type + const char *type ) { u_char *p; - MD5_CTX md5; + EVP_MD_CTX *md5; u_char hash[16], *seq; DES_key_schedule schedule; + EVP_CIPHER_CTX des_ctx; DES_cblock zero; DES_cblock deskey; uint32_t seq_number; @@ -74,32 +75,35 @@ verify_mic_des p += 16; /* verify checksum */ - MD5_Init (&md5); - MD5_Update (&md5, p - 24, 8); - MD5_Update (&md5, message_buffer->value, - message_buffer->length); - MD5_Final (hash, &md5); + md5 = EVP_MD_CTX_create(); + EVP_DigestInit_ex(md5, EVP_md5(), NULL); + EVP_DigestUpdate(md5, p - 24, 8); + EVP_DigestUpdate(md5, message_buffer->value, message_buffer->length); + EVP_DigestFinal_ex(md5, hash, NULL); + EVP_MD_CTX_destroy(md5); memset (&zero, 0, sizeof(zero)); memcpy (&deskey, key->keyvalue.data, sizeof(deskey)); - DES_set_key (&deskey, &schedule); + DES_set_key_unchecked (&deskey, &schedule); DES_cbc_cksum ((void *)hash, (void *)hash, sizeof(hash), &schedule, &zero); - if (memcmp (p - 8, hash, 8) != 0) { + if (ct_memcmp (p - 8, hash, 8) != 0) { memset (deskey, 0, sizeof(deskey)); memset (&schedule, 0, sizeof(schedule)); return GSS_S_BAD_MIC; } /* verify sequence number */ - + HEIMDAL_MUTEX_lock(&context_handle->ctx_id_mutex); p -= 16; - DES_set_key (&deskey, &schedule); - DES_cbc_encrypt ((void *)p, (void *)p, 8, - &schedule, (DES_cblock *)hash, DES_DECRYPT); + + EVP_CIPHER_CTX_init(&des_ctx); + EVP_CipherInit_ex(&des_ctx, EVP_des_cbc(), NULL, key->keyvalue.data, hash, 0); + EVP_Cipher(&des_ctx, p, p, 8); + EVP_CIPHER_CTX_cleanup(&des_ctx); memset (deskey, 0, sizeof(deskey)); memset (&schedule, 0, sizeof(schedule)); @@ -108,9 +112,9 @@ verify_mic_des _gsskrb5_decode_om_uint32(seq, &seq_number); if (context_handle->more_flags & LOCAL) - cmp = memcmp(&seq[4], "\xff\xff\xff\xff", 4); + cmp = ct_memcmp(&seq[4], "\xff\xff\xff\xff", 4); else - cmp = memcmp(&seq[4], "\x00\x00\x00\x00", 4); + cmp = ct_memcmp(&seq[4], "\x00\x00\x00\x00", 4); if (cmp != 0) { HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex); @@ -127,6 +131,7 @@ verify_mic_des return GSS_S_COMPLETE; } +#endif static OM_uint32 verify_mic_des3 @@ -137,7 +142,7 @@ verify_mic_des3 const gss_buffer_t token_buffer, gss_qop_t * qop_state, krb5_keyblock *key, - char *type + const char *type ) { u_char *p; @@ -150,7 +155,7 @@ verify_mic_des3 Checksum csum; char *tmp; char ivec[8]; - + p = token_buffer->value; ret = _gsskrb5_verify_header (&p, token_buffer->length, @@ -209,9 +214,9 @@ retry: _gsskrb5_decode_om_uint32(seq, &seq_number); if (context_handle->more_flags & LOCAL) - cmp = memcmp(&seq[4], "\xff\xff\xff\xff", 4); + cmp = ct_memcmp(&seq[4], "\xff\xff\xff\xff", 4); else - cmp = memcmp(&seq[4], "\x00\x00\x00\x00", 4); + cmp = ct_memcmp(&seq[4], "\x00\x00\x00\x00", 4); krb5_data_free (&seq_data); if (cmp != 0) { @@ -266,21 +271,26 @@ retry: OM_uint32 _gsskrb5_verify_mic_internal (OM_uint32 * minor_status, - const gsskrb5_ctx context_handle, + const gsskrb5_ctx ctx, krb5_context context, const gss_buffer_t message_buffer, const gss_buffer_t token_buffer, gss_qop_t * qop_state, - char * type + const char * type ) { krb5_keyblock *key; OM_uint32 ret; krb5_keytype keytype; - HEIMDAL_MUTEX_lock(&context_handle->ctx_id_mutex); - ret = _gsskrb5i_get_token_key(context_handle, context, &key); - HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex); + if (ctx->more_flags & IS_CFX) + return _gssapi_verify_mic_cfx (minor_status, ctx, + context, message_buffer, token_buffer, + qop_state); + + HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex); + ret = _gsskrb5i_get_token_key(ctx, context, &key); + HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex); if (ret) { *minor_status = ret; return GSS_S_FAILURE; @@ -289,35 +299,35 @@ _gsskrb5_verify_mic_internal krb5_enctype_to_keytype (context, key->keytype, &keytype); switch (keytype) { case KEYTYPE_DES : - ret = verify_mic_des (minor_status, context_handle, context, +#ifdef HEIM_WEAK_CRYPTO + ret = verify_mic_des (minor_status, ctx, context, message_buffer, token_buffer, qop_state, key, type); +#else + ret = GSS_S_FAILURE; +#endif break; case KEYTYPE_DES3 : - ret = verify_mic_des3 (minor_status, context_handle, context, + ret = verify_mic_des3 (minor_status, ctx, context, message_buffer, token_buffer, qop_state, key, type); break; case KEYTYPE_ARCFOUR : case KEYTYPE_ARCFOUR_56 : - ret = _gssapi_verify_mic_arcfour (minor_status, context_handle, + ret = _gssapi_verify_mic_arcfour (minor_status, ctx, context, message_buffer, token_buffer, qop_state, key, type); break; default : - ret = _gssapi_verify_mic_cfx (minor_status, context_handle, - context, - message_buffer, token_buffer, qop_state, - key); - break; + abort(); } krb5_free_keyblock (context, key); - + return ret; } -OM_uint32 +OM_uint32 GSSAPI_CALLCONV _gsskrb5_verify_mic (OM_uint32 * minor_status, const gss_ctx_id_t context_handle, @@ -334,11 +344,11 @@ _gsskrb5_verify_mic if (qop_state != NULL) *qop_state = GSS_C_QOP_DEFAULT; - ret = _gsskrb5_verify_mic_internal(minor_status, + ret = _gsskrb5_verify_mic_internal(minor_status, (gsskrb5_ctx)context_handle, context, message_buffer, token_buffer, - qop_state, "\x01\x01"); + qop_state, (void *)(intptr_t)"\x01\x01"); return ret; } |
