crypto/evp/evp_pbe.c

   1 /* evp_pbe.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 1999.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999-2006 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include <openssl/evp.h>
  62 #include <openssl/pkcs12.h>
  63 #include <openssl/x509.h>
  64
  65 /* Password based encryption (PBE) functions */
  66
  67 static STACK *pbe_algs;
  68
  69 /* Setup a cipher context from a PBE algorithm */
  70
  71 typedef struct
  72         {
  73         int pbe_type;
  74         int pbe_nid;
  75         int cipher_nid;
  76         int md_nid;
  77         EVP_PBE_KEYGEN *keygen;
  78         } EVP_PBE_CTL;
  79
  80 EVP_PBE_CTL builtin_pbe[] =
  81         {
  82         {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndDES_CBC,
  83                         NID_des_cbc, NID_md2, PKCS5_PBE_keyivgen},
  84         {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndDES_CBC,
  85                         NID_des_cbc, NID_md5, PKCS5_PBE_keyivgen},
  86         {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndRC2_CBC,
  87                         NID_rc2_64_cbc, NID_sha1, PKCS5_PBE_keyivgen},
  88
  89         {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC4,
  90                         NID_rc4, NID_sha1, PKCS12_PBE_keyivgen},
  91         {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC4,
  92                         NID_rc4_40, NID_sha1, PKCS12_PBE_keyivgen},
  93         {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
  94                         NID_des_ede3_cbc, NID_sha1, PKCS12_PBE_keyivgen},
  95         {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And2_Key_TripleDES_CBC,
  96                         NID_des_ede_cbc, NID_sha1, PKCS12_PBE_keyivgen},
  97         {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC2_CBC,
  98                         NID_rc2_cbc, NID_sha1, PKCS12_PBE_keyivgen},
  99         {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC2_CBC,
 100                         NID_rc2_40_cbc, NID_sha1, PKCS12_PBE_keyivgen},
 101
 102 #ifndef OPENSSL_NO_HMAC
 103         {EVP_PBE_TYPE_OUTER, NID_pbes2, -1, -1, PKCS5_v2_PBE_keyivgen},
 104 #endif
 105         {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndRC2_CBC,
 106                         NID_rc2_64_cbc, NID_md2, PKCS5_PBE_keyivgen},
 107         {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndRC2_CBC,
 108                         NID_rc2_64_cbc, NID_md5, PKCS5_PBE_keyivgen},
 109         {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndDES_CBC,
 110                         NID_des_cbc, NID_sha1, PKCS5_PBE_keyivgen},
 111
 112
 113         {EVP_PBE_TYPE_PRF, NID_hmacWithSHA1, -1, NID_sha1, 0},
 114         {EVP_PBE_TYPE_PRF, NID_id_HMACGostR3411_94, -1, NID_id_GostR3411_94, 0},
 115         {EVP_PBE_TYPE_PRF, NID_hmacWithMD5, -1, NID_md5, 0},
 116         };
 117
 118 #ifdef TEST
 119 int main(int argc, char **argv)
 120         {
 121         int i, nid_md, nid_cipher;
 122         EVP_PBE_CTL *tpbe, *tpbe2;
 123         /*OpenSSL_add_all_algorithms();*/
 124
 125         for (i = 0; i < sizeof(builtin_pbe)/sizeof(EVP_PBE_CTL); i++)
 126                 {
 127                 tpbe = builtin_pbe + i;
 128                 fprintf(stderr, "%d %d %s ", tpbe->pbe_type, tpbe->pbe_nid,
 129                                                 OBJ_nid2sn(tpbe->pbe_nid));
 130                 if (EVP_PBE_find(tpbe->pbe_type, tpbe->pbe_nid,
 131                                         &nid_cipher ,&nid_md,0))
 132                         fprintf(stderr, "Found %s %s\n",
 133                                         OBJ_nid2sn(nid_cipher),
 134                                         OBJ_nid2sn(nid_md));
 135                 else
 136                         fprintf(stderr, "Find ERROR!!\n");
 137                 }
 138
 139         return 0;
 140         }
 141 #endif
 142
 143
 144
 145 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
 146              ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
 147         {
 148         const EVP_CIPHER *cipher;
 149         const EVP_MD *md;
 150         int cipher_nid, md_nid;
 151         EVP_PBE_KEYGEN *keygen;
 152
 153         if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
 154                                         &cipher_nid, &md_nid, &keygen))
 155                 {
 156                 char obj_tmp[80];
 157                 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_UNKNOWN_PBE_ALGORITHM);
 158                 if (!pbe_obj) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
 159                 else i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
 160                 ERR_add_error_data(2, "TYPE=", obj_tmp);
 161                 return 0;
 162                 }
 163
 164         if(!pass)
 165                 passlen = 0;
 166         else if (passlen == -1)
 167                 passlen = strlen(pass);
 168
 169         if (cipher_nid == -1)
 170                 cipher = NULL;
 171         else
 172                 cipher = EVP_get_cipherbynid(cipher_nid);
 173
 174         if (md_nid == -1)
 175                 md = NULL;
 176         else
 177                 md = EVP_get_digestbynid(md_nid);
 178
 179         if (!keygen(ctx, pass, passlen, param, cipher, md, en_de))
 180                 {
 181                 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE);
 182                 return 0;
 183                 }
 184         return 1;
 185 }
 186
 187 static int pbe_cmp2(const void *a, const void *b)
 188         {
 189         const EVP_PBE_CTL *pbe1 = a;
 190         const EVP_PBE_CTL *pbe2 = b;
 191         int ret = pbe1->pbe_type - pbe2->pbe_type;
 192         if (ret)
 193                 return ret;
 194         else
 195                 return pbe1->pbe_nid - pbe2->pbe_nid;
 196         }
 197
 198 static int pbe_cmp(const char * const *a, const char * const *b)
 199         {
 200         const EVP_PBE_CTL * const *pbe1 = (const EVP_PBE_CTL * const *) a,
 201                         * const *pbe2 = (const EVP_PBE_CTL * const *)b;
 202         int ret = (*pbe1)->pbe_type - (*pbe2)->pbe_type;
 203         if (ret)
 204                 return ret;
 205         else
 206                 return (*pbe1)->pbe_nid - (*pbe2)->pbe_nid;
 207         }
 208
 209 /* Add a PBE algorithm */
 210
 211 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
 212              EVP_PBE_KEYGEN *keygen)
 213         {
 214         EVP_PBE_CTL *pbe_tmp;
 215         if (!pbe_algs)
 216                 pbe_algs = sk_new(pbe_cmp);
 217         if (!(pbe_tmp = (EVP_PBE_CTL*) OPENSSL_malloc (sizeof(EVP_PBE_CTL))))
 218                 {
 219                 EVPerr(EVP_F_EVP_PBE_ALG_ADD,ERR_R_MALLOC_FAILURE);
 220                 return 0;
 221                 }
 222         pbe_tmp->pbe_type = pbe_type;
 223         pbe_tmp->pbe_nid = pbe_nid;
 224         pbe_tmp->cipher_nid = cipher_nid;
 225         pbe_tmp->md_nid = md_nid;
 226         pbe_tmp->keygen = keygen;
 227
 228
 229         sk_push (pbe_algs, (char *)pbe_tmp);
 230         return 1;
 231         }
 232
 233 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
 234              EVP_PBE_KEYGEN *keygen)
 235         {
 236         int cipher_nid, md_nid;
 237         if (cipher)
 238                 cipher_nid = EVP_CIPHER_type(cipher);
 239         else
 240                 cipher_nid = -1;
 241         if (md)
 242                 md_nid = EVP_MD_type(md);
 243         else
 244                 md_nid = -1;
 245
 246         return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
 247                                         cipher_nid, md_nid, keygen);
 248         }
 249
 250 int EVP_PBE_find(int type, int pbe_nid,
 251                         int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
 252         {
 253         EVP_PBE_CTL *pbetmp = NULL, pbelu;
 254         int i;
 255         if (pbe_nid == NID_undef)
 256                 return 0;
 257
 258         pbelu.pbe_type = type;
 259         pbelu.pbe_nid = pbe_nid;
 260
 261         if (pbe_algs)
 262                 {
 263                 i = sk_find(pbe_algs, (char *)&pbelu);
 264                 if (i != -1)
 265                         pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i);
 266                 }
 267         if (pbetmp == NULL)
 268                 {
 269                 pbetmp = (EVP_PBE_CTL *) OBJ_bsearch((char *)&pbelu,
 270                         (char *)builtin_pbe,
 271                         sizeof(builtin_pbe)/sizeof(EVP_PBE_CTL),
 272                         sizeof(EVP_PBE_CTL),
 273                         pbe_cmp2);
 274                 }
 275         if (pbetmp == NULL)
 276                 return 0;
 277         if (pcnid)
 278                 *pcnid = pbetmp->cipher_nid;
 279         if (pmnid)
 280                 *pmnid = pbetmp->md_nid;
 281         if (pkeygen)
 282                 *pkeygen = pbetmp->keygen;
 283         return 1;
 284         }
 285
 286
 287
 288 void EVP_PBE_cleanup(void)
 289         {
 290         sk_pop_free(pbe_algs, OPENSSL_freeFunc);
 291         pbe_algs = NULL;
 292         }