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p12_key.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/pkcs12/p12_key.c
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1/* $OpenBSD: p12_key.c,v 1.26 2017/05/02 03:59:45 deraadt Exp $ */-
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL-
3 * project 1999.-
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-
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 <string.h>-
61-
62#include <openssl/bn.h>-
63#include <openssl/err.h>-
64#include <openssl/pkcs12.h>-
65-
66/* PKCS12 compatible key/IV generation */-
67#ifndef min-
68#define min(a,b) ((a) < (b) ? (a) : (b))-
69#endif-
70-
71int-
72PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,-
73 int saltlen, int id, int iter, int n, unsigned char *out,-
74 const EVP_MD *md_type)-
75{-
76 int ret;-
77 unsigned char *unipass;-
78 int uniplen;-
79-
80 if (!pass) {
!passDescription
TRUEnever evaluated
FALSEnever evaluated
0
81 unipass = NULL;-
82 uniplen = 0;-
83 } else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) {
never executed: end of block
!OPENSSL_asc2u...ass, &uniplen)Description
TRUEnever evaluated
FALSEnever evaluated
0
84 PKCS12error(ERR_R_MALLOC_FAILURE);-
85 return 0;
never executed: return 0;
0
86 }-
87 ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,-
88 id, iter, n, out, md_type);-
89 if (ret <= 0)
ret <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
90 return 0;
never executed: return 0;
0
91 freezero(unipass, uniplen);-
92 return ret;
never executed: return ret;
0
93}-
94-
95int-
96PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt,-
97 int saltlen, int id, int iter, int n, unsigned char *out,-
98 const EVP_MD *md_type)-
99{-
100 unsigned char *B, *D, *I, *p, *Ai;-
101 int Slen, Plen, Ilen, Ijlen;-
102 int i, j, u, v;-
103 int ret = 0;-
104 BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */-
105 EVP_MD_CTX ctx;-
106-
107 v = EVP_MD_block_size(md_type);-
108 u = EVP_MD_size(md_type);-
109 if (u < 0)
u < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
110 return 0;
never executed: return 0;
0
111-
112 EVP_MD_CTX_init(&ctx);-
113 D = malloc(v);-
114 Ai = malloc(u);-
115 B = malloc(v + 1);-
116 Slen = v * ((saltlen + v - 1) / v);-
117 if (passlen)
passlenDescription
TRUEnever evaluated
FALSEnever evaluated
0
118 Plen = v * ((passlen + v - 1)/v);
never executed: Plen = v * ((passlen + v - 1)/v);
0
119 else-
120 Plen = 0;
never executed: Plen = 0;
0
121 Ilen = Slen + Plen;-
122 I = malloc(Ilen);-
123 Ij = BN_new();-
124 Bpl1 = BN_new();-
125 if (!D || !Ai || !B || !I || !Ij || !Bpl1)
!DDescription
TRUEnever evaluated
FALSEnever evaluated
!AiDescription
TRUEnever evaluated
FALSEnever evaluated
!BDescription
TRUEnever evaluated
FALSEnever evaluated
!IDescription
TRUEnever evaluated
FALSEnever evaluated
!IjDescription
TRUEnever evaluated
FALSEnever evaluated
!Bpl1Description
TRUEnever evaluated
FALSEnever evaluated
0
126 goto err;
never executed: goto err;
0
127 for (i = 0; i < v; i++)
i < vDescription
TRUEnever evaluated
FALSEnever evaluated
0
128 D[i] = id;
never executed: D[i] = id;
0
129 p = I;-
130 for (i = 0; i < Slen; i++)
i < SlenDescription
TRUEnever evaluated
FALSEnever evaluated
0
131 *p++ = salt[i % saltlen];
never executed: *p++ = salt[i % saltlen];
0
132 for (i = 0; i < Plen; i++)
i < PlenDescription
TRUEnever evaluated
FALSEnever evaluated
0
133 *p++ = pass[i % passlen];
never executed: *p++ = pass[i % passlen];
0
134 for (;;) {-
135 if (!EVP_DigestInit_ex(&ctx, md_type, NULL) ||
!EVP_DigestIni... ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
136 !EVP_DigestUpdate(&ctx, D, v) ||
!EVP_DigestUpdate(&ctx, D, v)Description
TRUEnever evaluated
FALSEnever evaluated
0
137 !EVP_DigestUpdate(&ctx, I, Ilen) ||
!EVP_DigestUpd...&ctx, I, Ilen)Description
TRUEnever evaluated
FALSEnever evaluated
0
138 !EVP_DigestFinal_ex(&ctx, Ai, NULL))
!EVP_DigestFin... ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
139 goto err;
never executed: goto err;
0
140 for (j = 1; j < iter; j++) {
j < iterDescription
TRUEnever evaluated
FALSEnever evaluated
0
141 if (!EVP_DigestInit_ex(&ctx, md_type, NULL) ||
!EVP_DigestIni... ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
142 !EVP_DigestUpdate(&ctx, Ai, u) ||
!EVP_DigestUpdate(&ctx, Ai, u)Description
TRUEnever evaluated
FALSEnever evaluated
0
143 !EVP_DigestFinal_ex(&ctx, Ai, NULL))
!EVP_DigestFin... ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
144 goto err;
never executed: goto err;
0
145 }
never executed: end of block
0
146 memcpy (out, Ai, min (n, u));-
147 if (u >= n) {
u >= nDescription
TRUEnever evaluated
FALSEnever evaluated
0
148 ret = 1;-
149 goto end;
never executed: goto end;
0
150 }-
151 n -= u;-
152 out += u;-
153 for (j = 0; j < v; j++)
j < vDescription
TRUEnever evaluated
FALSEnever evaluated
0
154 B[j] = Ai[j % u];
never executed: B[j] = Ai[j % u];
0
155 /* Work out B + 1 first then can use B as tmp space */-
156 if (!BN_bin2bn (B, v, Bpl1))
!BN_bin2bn (B, v, Bpl1)Description
TRUEnever evaluated
FALSEnever evaluated
0
157 goto err;
never executed: goto err;
0
158 if (!BN_add_word (Bpl1, 1))
!BN_add_word (Bpl1, 1)Description
TRUEnever evaluated
FALSEnever evaluated
0
159 goto err;
never executed: goto err;
0
160 for (j = 0; j < Ilen; j += v) {
j < IlenDescription
TRUEnever evaluated
FALSEnever evaluated
0
161 if (!BN_bin2bn(I + j, v, Ij))
!BN_bin2bn(I + j, v, Ij)Description
TRUEnever evaluated
FALSEnever evaluated
0
162 goto err;
never executed: goto err;
0
163 if (!BN_add(Ij, Ij, Bpl1))
!BN_add(Ij, Ij, Bpl1)Description
TRUEnever evaluated
FALSEnever evaluated
0
164 goto err;
never executed: goto err;
0
165 if (!BN_bn2bin(Ij, B))
!BN_bn2bin(Ij, B)Description
TRUEnever evaluated
FALSEnever evaluated
0
166 goto err;
never executed: goto err;
0
167 Ijlen = BN_num_bytes (Ij);-
168 /* If more than 2^(v*8) - 1 cut off MSB */-
169 if (Ijlen > v) {
Ijlen > vDescription
TRUEnever evaluated
FALSEnever evaluated
0
170 if (!BN_bn2bin (Ij, B))
!BN_bn2bin (Ij, B)Description
TRUEnever evaluated
FALSEnever evaluated
0
171 goto err;
never executed: goto err;
0
172 memcpy (I + j, B + 1, v);-
173#ifndef PKCS12_BROKEN_KEYGEN-
174 /* If less than v bytes pad with zeroes */-
175 } else if (Ijlen < v) {
never executed: end of block
Ijlen < vDescription
TRUEnever evaluated
FALSEnever evaluated
0
176 memset(I + j, 0, v - Ijlen);-
177 if (!BN_bn2bin(Ij, I + j + v - Ijlen))
!BN_bn2bin(Ij,...j + v - Ijlen)Description
TRUEnever evaluated
FALSEnever evaluated
0
178 goto err;
never executed: goto err;
0
179#endif-
180 } else if (!BN_bn2bin (Ij, I + j))
never executed: end of block
!BN_bn2bin (Ij, I + j)Description
TRUEnever evaluated
FALSEnever evaluated
0
181 goto err;
never executed: goto err;
0
182 }
never executed: end of block
0
183 }
never executed: end of block
0
184-
185err:
code before this statement never executed: err:
0
186 PKCS12error(ERR_R_MALLOC_FAILURE);-
187-
188end:
code before this statement never executed: end:
0
189 free(Ai);-
190 free(B);-
191 free(D);-
192 free(I);-
193 BN_free(Ij);-
194 BN_free(Bpl1);-
195 EVP_MD_CTX_cleanup(&ctx);-
196 return ret;
never executed: return ret;
0
197}-
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