3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
61 #include "internal/cryptlib.h"
62 #include <openssl/pkcs12.h>
63 #include <openssl/bn.h>
65 /* Uncomment out this line to get debugging info about key generation */
67 * #define DEBUG_KEYGEN
70 # include <openssl/bio.h>
72 void h__dump(unsigned char *p, int len);
75 /* PKCS12 compatible key/IV generation */
77 # define min(a,b) ((a) < (b) ? (a) : (b))
80 int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,
81 int saltlen, int id, int iter, int n,
82 unsigned char *out, const EVP_MD *md_type)
85 unsigned char *unipass;
91 } else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) {
92 PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC, ERR_R_MALLOC_FAILURE);
95 ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,
96 id, iter, n, out, md_type);
99 OPENSSL_clear_free(unipass, uniplen);
103 int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt,
104 int saltlen, int id, int iter, int n,
105 unsigned char *out, const EVP_MD *md_type)
107 unsigned char *B, *D, *I, *p, *Ai;
108 int Slen, Plen, Ilen, Ijlen;
111 BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
114 unsigned char *tmpout = out;
118 EVP_MD_CTX_init(&ctx);
120 fprintf(stderr, "KEYGEN DEBUG\n");
121 fprintf(stderr, "ID %d, ITER %d\n", id, iter);
122 fprintf(stderr, "Password (length %d):\n", passlen);
123 h__dump(pass, passlen);
124 fprintf(stderr, "Salt (length %d):\n", saltlen);
125 h__dump(salt, saltlen);
127 v = EVP_MD_block_size(md_type);
128 u = EVP_MD_size(md_type);
131 D = OPENSSL_malloc(v);
132 Ai = OPENSSL_malloc(u);
133 B = OPENSSL_malloc(v + 1);
134 Slen = v * ((saltlen + v - 1) / v);
136 Plen = v * ((passlen + v - 1) / v);
140 I = OPENSSL_malloc(Ilen);
143 if (!D || !Ai || !B || !I || !Ij || !Bpl1)
145 for (i = 0; i < v; i++)
148 for (i = 0; i < Slen; i++)
149 *p++ = salt[i % saltlen];
150 for (i = 0; i < Plen; i++)
151 *p++ = pass[i % passlen];
153 if (!EVP_DigestInit_ex(&ctx, md_type, NULL)
154 || !EVP_DigestUpdate(&ctx, D, v)
155 || !EVP_DigestUpdate(&ctx, I, Ilen)
156 || !EVP_DigestFinal_ex(&ctx, Ai, NULL))
158 for (j = 1; j < iter; j++) {
159 if (!EVP_DigestInit_ex(&ctx, md_type, NULL)
160 || !EVP_DigestUpdate(&ctx, Ai, u)
161 || !EVP_DigestFinal_ex(&ctx, Ai, NULL))
164 memcpy(out, Ai, min(n, u));
167 fprintf(stderr, "Output KEY (length %d)\n", tmpn);
168 h__dump(tmpout, tmpn);
175 for (j = 0; j < v; j++)
177 /* Work out B + 1 first then can use B as tmp space */
178 if (!BN_bin2bn(B, v, Bpl1))
180 if (!BN_add_word(Bpl1, 1))
182 for (j = 0; j < Ilen; j += v) {
183 if (!BN_bin2bn(I + j, v, Ij))
185 if (!BN_add(Ij, Ij, Bpl1))
187 if (!BN_bn2bin(Ij, B))
189 Ijlen = BN_num_bytes(Ij);
190 /* If more than 2^(v*8) - 1 cut off MSB */
192 if (!BN_bn2bin(Ij, B))
194 memcpy(I + j, B + 1, v);
195 #ifndef PKCS12_BROKEN_KEYGEN
196 /* If less than v bytes pad with zeroes */
197 } else if (Ijlen < v) {
198 memset(I + j, 0, v - Ijlen);
199 if (!BN_bn2bin(Ij, I + j + v - Ijlen))
202 } else if (!BN_bn2bin(Ij, I + j))
208 PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI, ERR_R_MALLOC_FAILURE);
217 EVP_MD_CTX_cleanup(&ctx);
222 void h__dump(unsigned char *p, int len)
225 fprintf(stderr, "%02X", *p);
226 fprintf(stderr, "\n");