crypto/evp/evp_pbe.c

   1 /* evp_pbe.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 1999.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 1999-2006 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include "internal/cryptlib.h"
  62 #include <openssl/evp.h>
  63 #include <openssl/pkcs12.h>
  64 #include <openssl/x509.h>
  65 #include "evp_locl.h"
  66
  67 /* Password based encryption (PBE) functions */
  68
  69 /* Setup a cipher context from a PBE algorithm */
  70
  71 typedef struct {
  72     int pbe_type;
  73     int pbe_nid;
  74     int cipher_nid;
  75     int md_nid;
  76     EVP_PBE_KEYGEN *keygen;
  77 } EVP_PBE_CTL;
  78
  79 DECLARE_STACK_OF(EVP_PBE_CTL)
  80 static STACK_OF(EVP_PBE_CTL) *pbe_algs;
  81
  82 static const EVP_PBE_CTL builtin_pbe[] = {
  83     {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndDES_CBC,
  84      NID_des_cbc, NID_md2, PKCS5_PBE_keyivgen},
  85     {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndDES_CBC,
  86      NID_des_cbc, NID_md5, PKCS5_PBE_keyivgen},
  87     {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndRC2_CBC,
  88      NID_rc2_64_cbc, NID_sha1, PKCS5_PBE_keyivgen},
  89
  90     {EVP_PBE_TYPE_OUTER, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
  91
  92     {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC4,
  93      NID_rc4, NID_sha1, PKCS12_PBE_keyivgen},
  94     {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC4,
  95      NID_rc4_40, NID_sha1, PKCS12_PBE_keyivgen},
  96     {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
  97      NID_des_ede3_cbc, NID_sha1, PKCS12_PBE_keyivgen},
  98     {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And2_Key_TripleDES_CBC,
  99      NID_des_ede_cbc, NID_sha1, PKCS12_PBE_keyivgen},
 100     {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC2_CBC,
 101      NID_rc2_cbc, NID_sha1, PKCS12_PBE_keyivgen},
 102     {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC2_CBC,
 103      NID_rc2_40_cbc, NID_sha1, PKCS12_PBE_keyivgen},
 104
 105     {EVP_PBE_TYPE_OUTER, NID_pbes2, -1, -1, PKCS5_v2_PBE_keyivgen},
 106
 107     {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndRC2_CBC,
 108      NID_rc2_64_cbc, NID_md2, PKCS5_PBE_keyivgen},
 109     {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndRC2_CBC,
 110      NID_rc2_64_cbc, NID_md5, PKCS5_PBE_keyivgen},
 111     {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndDES_CBC,
 112      NID_des_cbc, NID_sha1, PKCS5_PBE_keyivgen},
 113
 114     {EVP_PBE_TYPE_PRF, NID_hmacWithSHA1, -1, NID_sha1, 0},
 115     {EVP_PBE_TYPE_PRF, NID_hmacWithMD5, -1, NID_md5, 0},
 116     {EVP_PBE_TYPE_PRF, NID_hmacWithSHA224, -1, NID_sha224, 0},
 117     {EVP_PBE_TYPE_PRF, NID_hmacWithSHA256, -1, NID_sha256, 0},
 118     {EVP_PBE_TYPE_PRF, NID_hmacWithSHA384, -1, NID_sha384, 0},
 119     {EVP_PBE_TYPE_PRF, NID_hmacWithSHA512, -1, NID_sha512, 0},
 120     {EVP_PBE_TYPE_PRF, NID_id_HMACGostR3411_94, -1, NID_id_GostR3411_94, 0},
 121     {EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_256, -1,
 122      NID_id_GostR3411_2012_256, 0},
 123     {EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_512, -1,
 124      NID_id_GostR3411_2012_512, 0},
 125     {EVP_PBE_TYPE_KDF, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
 126 #ifndef OPENSSL_NO_SCRYPT
 127     {EVP_PBE_TYPE_KDF, NID_id_scrypt, -1, -1, PKCS5_v2_scrypt_keyivgen}
 128 #endif
 129 };
 130
 131 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
 132                        ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
 133 {
 134     const EVP_CIPHER *cipher;
 135     const EVP_MD *md;
 136     int cipher_nid, md_nid;
 137     EVP_PBE_KEYGEN *keygen;
 138
 139     if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
 140                       &cipher_nid, &md_nid, &keygen)) {
 141         char obj_tmp[80];
 142         EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_PBE_ALGORITHM);
 143         if (!pbe_obj)
 144             OPENSSL_strlcpy(obj_tmp, "NULL", sizeof obj_tmp);
 145         else
 146             i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
 147         ERR_add_error_data(2, "TYPE=", obj_tmp);
 148         return 0;
 149     }
 150
 151     if (!pass)
 152         passlen = 0;
 153     else if (passlen == -1)
 154         passlen = strlen(pass);
 155
 156     if (cipher_nid == -1)
 157         cipher = NULL;
 158     else {
 159         cipher = EVP_get_cipherbynid(cipher_nid);
 160         if (!cipher) {
 161             EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_CIPHER);
 162             return 0;
 163         }
 164     }
 165
 166     if (md_nid == -1)
 167         md = NULL;
 168     else {
 169         md = EVP_get_digestbynid(md_nid);
 170         if (!md) {
 171             EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_DIGEST);
 172             return 0;
 173         }
 174     }
 175
 176     if (!keygen(ctx, pass, passlen, param, cipher, md, en_de)) {
 177         EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_KEYGEN_FAILURE);
 178         return 0;
 179     }
 180     return 1;
 181 }
 182
 183 DECLARE_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2);
 184
 185 static int pbe2_cmp(const EVP_PBE_CTL *pbe1, const EVP_PBE_CTL *pbe2)
 186 {
 187     int ret = pbe1->pbe_type - pbe2->pbe_type;
 188     if (ret)
 189         return ret;
 190     else
 191         return pbe1->pbe_nid - pbe2->pbe_nid;
 192 }
 193
 194 IMPLEMENT_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2);
 195
 196 static int pbe_cmp(const EVP_PBE_CTL *const *a, const EVP_PBE_CTL *const *b)
 197 {
 198     int ret = (*a)->pbe_type - (*b)->pbe_type;
 199     if (ret)
 200         return ret;
 201     else
 202         return (*a)->pbe_nid - (*b)->pbe_nid;
 203 }
 204
 205 /* Add a PBE algorithm */
 206
 207 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid,
 208                          int md_nid, EVP_PBE_KEYGEN *keygen)
 209 {
 210     EVP_PBE_CTL *pbe_tmp;
 211
 212     if (pbe_algs == NULL) {
 213         pbe_algs = sk_EVP_PBE_CTL_new(pbe_cmp);
 214         if (pbe_algs == NULL)
 215             goto err;
 216     }
 217
 218     if ((pbe_tmp = OPENSSL_malloc(sizeof(*pbe_tmp))) == NULL)
 219         goto err;
 220
 221     pbe_tmp->pbe_type = pbe_type;
 222     pbe_tmp->pbe_nid = pbe_nid;
 223     pbe_tmp->cipher_nid = cipher_nid;
 224     pbe_tmp->md_nid = md_nid;
 225     pbe_tmp->keygen = keygen;
 226
 227     sk_EVP_PBE_CTL_push(pbe_algs, pbe_tmp);
 228     return 1;
 229
 230  err:
 231     EVPerr(EVP_F_EVP_PBE_ALG_ADD_TYPE, ERR_R_MALLOC_FAILURE);
 232     return 0;
 233 }
 234
 235 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
 236                     EVP_PBE_KEYGEN *keygen)
 237 {
 238     int cipher_nid, md_nid;
 239
 240     if (cipher)
 241         cipher_nid = EVP_CIPHER_nid(cipher);
 242     else
 243         cipher_nid = -1;
 244     if (md)
 245         md_nid = EVP_MD_type(md);
 246     else
 247         md_nid = -1;
 248
 249     return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
 250                                 cipher_nid, md_nid, keygen);
 251 }
 252
 253 int EVP_PBE_find(int type, int pbe_nid,
 254                  int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
 255 {
 256     EVP_PBE_CTL *pbetmp = NULL, pbelu;
 257     int i;
 258     if (pbe_nid == NID_undef)
 259         return 0;
 260
 261     pbelu.pbe_type = type;
 262     pbelu.pbe_nid = pbe_nid;
 263
 264     if (pbe_algs) {
 265         i = sk_EVP_PBE_CTL_find(pbe_algs, &pbelu);
 266         if (i != -1)
 267             pbetmp = sk_EVP_PBE_CTL_value(pbe_algs, i);
 268     }
 269     if (pbetmp == NULL) {
 270         pbetmp = OBJ_bsearch_pbe2(&pbelu, builtin_pbe, OSSL_NELEM(builtin_pbe));
 271     }
 272     if (pbetmp == NULL)
 273         return 0;
 274     if (pcnid)
 275         *pcnid = pbetmp->cipher_nid;
 276     if (pmnid)
 277         *pmnid = pbetmp->md_nid;
 278     if (pkeygen)
 279         *pkeygen = pbetmp->keygen;
 280     return 1;
 281 }
 282
 283 static void free_evp_pbe_ctl(EVP_PBE_CTL *pbe)
 284 {
 285     OPENSSL_free(pbe);
 286 }
 287
 288 void EVP_PBE_cleanup(void)
 289 {
 290     sk_EVP_PBE_CTL_pop_free(pbe_algs, free_evp_pbe_ctl);
 291     pbe_algs = NULL;
 292 }
 293
 294 int EVP_PBE_get(int *ptype, int *ppbe_nid, size_t num)
 295 {
 296     const EVP_PBE_CTL *tpbe;
 297
 298     if (num >= OSSL_NELEM(builtin_pbe))
 299         return 0;
 300
 301     tpbe = builtin_pbe + num;
 302     if (ptype)
 303         *ptype = tpbe->pbe_type;
 304     if (ppbe_nid)
 305         *ppbe_nid = tpbe->pbe_nid;
 306     return 1;
 307 }