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Commit | Line | Data |
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0f113f3e MC |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
3 | * 1999. | |
8d8c7266 DSH |
4 | */ |
5 | /* ==================================================================== | |
6 | * Copyright (c) 1999 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 | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
8d8c7266 DSH |
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> | |
b39fc560 | 60 | #include "internal/cryptlib.h" |
ec577822 | 61 | #include <openssl/pkcs12.h> |
0f814687 | 62 | #include <openssl/bn.h> |
8d8c7266 DSH |
63 | |
64 | /* Uncomment out this line to get debugging info about key generation */ | |
0f113f3e MC |
65 | /* |
66 | * #define DEBUG_KEYGEN | |
67 | */ | |
8d8c7266 | 68 | #ifdef DEBUG_KEYGEN |
0f113f3e | 69 | # include <openssl/bio.h> |
8d8c7266 | 70 | extern BIO *bio_err; |
0f113f3e | 71 | void h__dump(unsigned char *p, int len); |
8d8c7266 DSH |
72 | #endif |
73 | ||
74 | /* PKCS12 compatible key/IV generation */ | |
75 | #ifndef min | |
0f113f3e | 76 | # define min(a,b) ((a) < (b) ? (a) : (b)) |
8d8c7266 DSH |
77 | #endif |
78 | ||
a331a305 | 79 | int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt, |
0f113f3e MC |
80 | int saltlen, int id, int iter, int n, |
81 | unsigned char *out, const EVP_MD *md_type) | |
8d8c7266 | 82 | { |
0f113f3e MC |
83 | int ret; |
84 | unsigned char *unipass; | |
85 | int uniplen; | |
0eab41fb | 86 | |
0f113f3e MC |
87 | if (!pass) { |
88 | unipass = NULL; | |
89 | uniplen = 0; | |
90 | } else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) { | |
91 | PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC, ERR_R_MALLOC_FAILURE); | |
92 | return 0; | |
93 | } | |
94 | ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen, | |
95 | id, iter, n, out, md_type); | |
96 | if (ret <= 0) | |
97 | return 0; | |
4b45c6e5 | 98 | OPENSSL_clear_free(unipass, uniplen); |
0f113f3e | 99 | return ret; |
8d8c7266 DSH |
100 | } |
101 | ||
a331a305 | 102 | int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt, |
0f113f3e MC |
103 | int saltlen, int id, int iter, int n, |
104 | unsigned char *out, const EVP_MD *md_type) | |
8d8c7266 | 105 | { |
39d51932 | 106 | unsigned char *B = NULL, *D = NULL, *I = NULL, *p = NULL, *Ai = NULL; |
0f113f3e MC |
107 | int Slen, Plen, Ilen, Ijlen; |
108 | int i, j, u, v; | |
109 | int ret = 0; | |
39d51932 RL |
110 | BIGNUM *Ij = NULL, *Bpl1 = NULL; /* These hold Ij and B + 1 */ |
111 | EVP_MD_CTX *ctx = NULL; | |
8d8c7266 | 112 | #ifdef DEBUG_KEYGEN |
0f113f3e MC |
113 | unsigned char *tmpout = out; |
114 | int tmpn = n; | |
3bf7ef53 RL |
115 | #endif |
116 | ||
bfb0641f | 117 | ctx = EVP_MD_CTX_new(); |
6e59a892 RL |
118 | if (ctx == NULL) |
119 | goto err; | |
120 | ||
3bf7ef53 | 121 | #ifdef DEBUG_KEYGEN |
0f113f3e MC |
122 | fprintf(stderr, "KEYGEN DEBUG\n"); |
123 | fprintf(stderr, "ID %d, ITER %d\n", id, iter); | |
124 | fprintf(stderr, "Password (length %d):\n", passlen); | |
125 | h__dump(pass, passlen); | |
126 | fprintf(stderr, "Salt (length %d):\n", saltlen); | |
127 | h__dump(salt, saltlen); | |
8d8c7266 | 128 | #endif |
0f113f3e MC |
129 | v = EVP_MD_block_size(md_type); |
130 | u = EVP_MD_size(md_type); | |
131 | if (u < 0) | |
132 | return 0; | |
133 | D = OPENSSL_malloc(v); | |
134 | Ai = OPENSSL_malloc(u); | |
135 | B = OPENSSL_malloc(v + 1); | |
136 | Slen = v * ((saltlen + v - 1) / v); | |
137 | if (passlen) | |
138 | Plen = v * ((passlen + v - 1) / v); | |
139 | else | |
140 | Plen = 0; | |
141 | Ilen = Slen + Plen; | |
142 | I = OPENSSL_malloc(Ilen); | |
143 | Ij = BN_new(); | |
144 | Bpl1 = BN_new(); | |
90945fa3 MC |
145 | if (D == NULL || Ai == NULL || B == NULL || I == NULL || Ij == NULL |
146 | || Bpl1 == NULL) | |
0f113f3e MC |
147 | goto err; |
148 | for (i = 0; i < v; i++) | |
149 | D[i] = id; | |
150 | p = I; | |
151 | for (i = 0; i < Slen; i++) | |
152 | *p++ = salt[i % saltlen]; | |
153 | for (i = 0; i < Plen; i++) | |
154 | *p++ = pass[i % passlen]; | |
155 | for (;;) { | |
6e59a892 RL |
156 | if (!EVP_DigestInit_ex(ctx, md_type, NULL) |
157 | || !EVP_DigestUpdate(ctx, D, v) | |
158 | || !EVP_DigestUpdate(ctx, I, Ilen) | |
159 | || !EVP_DigestFinal_ex(ctx, Ai, NULL)) | |
0f113f3e MC |
160 | goto err; |
161 | for (j = 1; j < iter; j++) { | |
6e59a892 RL |
162 | if (!EVP_DigestInit_ex(ctx, md_type, NULL) |
163 | || !EVP_DigestUpdate(ctx, Ai, u) | |
164 | || !EVP_DigestFinal_ex(ctx, Ai, NULL)) | |
0f113f3e MC |
165 | goto err; |
166 | } | |
167 | memcpy(out, Ai, min(n, u)); | |
168 | if (u >= n) { | |
8d8c7266 | 169 | #ifdef DEBUG_KEYGEN |
0f113f3e MC |
170 | fprintf(stderr, "Output KEY (length %d)\n", tmpn); |
171 | h__dump(tmpout, tmpn); | |
8d8c7266 | 172 | #endif |
0f113f3e MC |
173 | ret = 1; |
174 | goto end; | |
175 | } | |
176 | n -= u; | |
177 | out += u; | |
178 | for (j = 0; j < v; j++) | |
179 | B[j] = Ai[j % u]; | |
180 | /* Work out B + 1 first then can use B as tmp space */ | |
181 | if (!BN_bin2bn(B, v, Bpl1)) | |
182 | goto err; | |
183 | if (!BN_add_word(Bpl1, 1)) | |
184 | goto err; | |
185 | for (j = 0; j < Ilen; j += v) { | |
186 | if (!BN_bin2bn(I + j, v, Ij)) | |
187 | goto err; | |
188 | if (!BN_add(Ij, Ij, Bpl1)) | |
189 | goto err; | |
190 | if (!BN_bn2bin(Ij, B)) | |
191 | goto err; | |
192 | Ijlen = BN_num_bytes(Ij); | |
193 | /* If more than 2^(v*8) - 1 cut off MSB */ | |
194 | if (Ijlen > v) { | |
195 | if (!BN_bn2bin(Ij, B)) | |
196 | goto err; | |
197 | memcpy(I + j, B + 1, v); | |
02ee8626 | 198 | #ifndef PKCS12_BROKEN_KEYGEN |
0f113f3e MC |
199 | /* If less than v bytes pad with zeroes */ |
200 | } else if (Ijlen < v) { | |
201 | memset(I + j, 0, v - Ijlen); | |
202 | if (!BN_bn2bin(Ij, I + j + v - Ijlen)) | |
203 | goto err; | |
02ee8626 | 204 | #endif |
0f113f3e MC |
205 | } else if (!BN_bn2bin(Ij, I + j)) |
206 | goto err; | |
207 | } | |
208 | } | |
71fa4513 | 209 | |
0f113f3e MC |
210 | err: |
211 | PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI, ERR_R_MALLOC_FAILURE); | |
776654ad | 212 | |
0f113f3e MC |
213 | end: |
214 | OPENSSL_free(Ai); | |
215 | OPENSSL_free(B); | |
216 | OPENSSL_free(D); | |
217 | OPENSSL_free(I); | |
218 | BN_free(Ij); | |
219 | BN_free(Bpl1); | |
bfb0641f | 220 | EVP_MD_CTX_free(ctx); |
0f113f3e | 221 | return ret; |
8d8c7266 | 222 | } |
0f113f3e | 223 | |
8d8c7266 | 224 | #ifdef DEBUG_KEYGEN |
0f113f3e | 225 | void h__dump(unsigned char *p, int len) |
8d8c7266 | 226 | { |
0f113f3e MC |
227 | for (; len--; p++) |
228 | fprintf(stderr, "%02X", *p); | |
229 | fprintf(stderr, "\n"); | |
8d8c7266 DSH |
230 | } |
231 | #endif |