summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/evp/p5_crpt2.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/evp/p5_crpt2.c')
-rw-r--r--src/lib/libcrypto/evp/p5_crpt2.c247
1 files changed, 0 insertions, 247 deletions
diff --git a/src/lib/libcrypto/evp/p5_crpt2.c b/src/lib/libcrypto/evp/p5_crpt2.c
deleted file mode 100644
index 27a2c518be..0000000000
--- a/src/lib/libcrypto/evp/p5_crpt2.c
+++ /dev/null
@@ -1,247 +0,0 @@
1/* p5_crpt2.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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#if !defined(NO_HMAC) && !defined(NO_SHA)
59#include <stdio.h>
60#include <stdlib.h>
61#include <openssl/x509.h>
62#include <openssl/evp.h>
63#include <openssl/hmac.h>
64#include "cryptlib.h"
65
66/* set this to print out info about the keygen algorithm */
67/* #define DEBUG_PKCS5V2 */
68
69#ifdef DEBUG_PKCS5V2
70 static void h__dump (const unsigned char *p, int len);
71#endif
72
73/* This is an implementation of PKCS#5 v2.0 password based encryption key
74 * derivation function PBKDF2 using the only currently defined function HMAC
75 * with SHA1. Verified against test vectors posted by Peter Gutmann
76 * <pgut001@cs.auckland.ac.nz> to the PKCS-TNG <pkcs-tng@rsa.com> mailing list.
77 */
78
79int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
80 unsigned char *salt, int saltlen, int iter,
81 int keylen, unsigned char *out)
82{
83 unsigned char digtmp[SHA_DIGEST_LENGTH], *p, itmp[4];
84 int cplen, j, k, tkeylen;
85 unsigned long i = 1;
86 HMAC_CTX hctx;
87 p = out;
88 tkeylen = keylen;
89 if(passlen == -1) passlen = strlen(pass);
90 while(tkeylen) {
91 if(tkeylen > SHA_DIGEST_LENGTH) cplen = SHA_DIGEST_LENGTH;
92 else cplen = tkeylen;
93 /* We are unlikely to ever use more than 256 blocks (5120 bits!)
94 * but just in case...
95 */
96 itmp[0] = (unsigned char)((i >> 24) & 0xff);
97 itmp[1] = (unsigned char)((i >> 16) & 0xff);
98 itmp[2] = (unsigned char)((i >> 8) & 0xff);
99 itmp[3] = (unsigned char)(i & 0xff);
100 HMAC_Init(&hctx, pass, passlen, EVP_sha1());
101 HMAC_Update(&hctx, salt, saltlen);
102 HMAC_Update(&hctx, itmp, 4);
103 HMAC_Final(&hctx, digtmp, NULL);
104 memcpy(p, digtmp, cplen);
105 for(j = 1; j < iter; j++) {
106 HMAC(EVP_sha1(), pass, passlen,
107 digtmp, SHA_DIGEST_LENGTH, digtmp, NULL);
108 for(k = 0; k < cplen; k++) p[k] ^= digtmp[k];
109 }
110 tkeylen-= cplen;
111 i++;
112 p+= cplen;
113 }
114 HMAC_cleanup(&hctx);
115#ifdef DEBUG_PKCS5V2
116 fprintf(stderr, "Password:\n");
117 h__dump (pass, passlen);
118 fprintf(stderr, "Salt:\n");
119 h__dump (salt, saltlen);
120 fprintf(stderr, "Iteration count %d\n", iter);
121 fprintf(stderr, "Key:\n");
122 h__dump (out, keylen);
123#endif
124 return 1;
125}
126
127#ifdef DO_TEST
128main()
129{
130 unsigned char out[4];
131 unsigned char salt[] = {0x12, 0x34, 0x56, 0x78};
132 PKCS5_PBKDF2_HMAC_SHA1("password", -1, salt, 4, 5, 4, out);
133 fprintf(stderr, "Out %02X %02X %02X %02X\n",
134 out[0], out[1], out[2], out[3]);
135}
136
137#endif
138
139/* Now the key derivation function itself. This is a bit evil because
140 * it has to check the ASN1 parameters are valid: and there are quite a
141 * few of them...
142 */
143
144int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
145 ASN1_TYPE *param, EVP_CIPHER *c, EVP_MD *md,
146 int en_de)
147{
148 unsigned char *pbuf, *salt, key[EVP_MAX_KEY_LENGTH];
149 int saltlen, keylen, iter, plen;
150 PBE2PARAM *pbe2 = NULL;
151 const EVP_CIPHER *cipher;
152 PBKDF2PARAM *kdf = NULL;
153
154 pbuf = param->value.sequence->data;
155 plen = param->value.sequence->length;
156 if(!param || (param->type != V_ASN1_SEQUENCE) ||
157 !(pbe2 = d2i_PBE2PARAM(NULL, &pbuf, plen))) {
158 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
159 return 0;
160 }
161
162 /* See if we recognise the key derivation function */
163
164 if(OBJ_obj2nid(pbe2->keyfunc->algorithm) != NID_id_pbkdf2) {
165 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
166 EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
167 goto err;
168 }
169
170 /* lets see if we recognise the encryption algorithm.
171 */
172
173 cipher = EVP_get_cipherbyname(
174 OBJ_nid2sn(OBJ_obj2nid(pbe2->encryption->algorithm)));
175
176 if(!cipher) {
177 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
178 EVP_R_UNSUPPORTED_CIPHER);
179 goto err;
180 }
181
182 /* Fixup cipher based on AlgorithmIdentifier */
183 EVP_CipherInit(ctx, cipher, NULL, NULL, en_de);
184 if(EVP_CIPHER_asn1_to_param(ctx, pbe2->encryption->parameter) < 0) {
185 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
186 EVP_R_CIPHER_PARAMETER_ERROR);
187 goto err;
188 }
189 keylen = EVP_CIPHER_CTX_key_length(ctx);
190
191 /* Now decode key derivation function */
192
193 pbuf = pbe2->keyfunc->parameter->value.sequence->data;
194 plen = pbe2->keyfunc->parameter->value.sequence->length;
195 if(!pbe2->keyfunc->parameter ||
196 (pbe2->keyfunc->parameter->type != V_ASN1_SEQUENCE) ||
197 !(kdf = d2i_PBKDF2PARAM(NULL, &pbuf, plen)) ) {
198 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
199 goto err;
200 }
201
202 PBE2PARAM_free(pbe2);
203 pbe2 = NULL;
204
205 /* Now check the parameters of the kdf */
206
207 if(kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != keylen)){
208 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
209 EVP_R_UNSUPPORTED_KEYLENGTH);
210 goto err;
211 }
212
213 if(kdf->prf && (OBJ_obj2nid(kdf->prf->algorithm) != NID_hmacWithSHA1)) {
214 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_UNSUPPORTED_PRF);
215 goto err;
216 }
217
218 if(kdf->salt->type != V_ASN1_OCTET_STRING) {
219 EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
220 EVP_R_UNSUPPORTED_SALT_TYPE);
221 goto err;
222 }
223
224 /* it seems that its all OK */
225 salt = kdf->salt->value.octet_string->data;
226 saltlen = kdf->salt->value.octet_string->length;
227 iter = ASN1_INTEGER_get(kdf->iter);
228 PKCS5_PBKDF2_HMAC_SHA1(pass, passlen, salt, saltlen, iter, keylen, key);
229 EVP_CipherInit(ctx, NULL, key, NULL, en_de);
230 memset(key, 0, keylen);
231 PBKDF2PARAM_free(kdf);
232 return 1;
233
234 err:
235 PBE2PARAM_free(pbe2);
236 PBKDF2PARAM_free(kdf);
237 return 0;
238}
239
240#ifdef DEBUG_PKCS5V2
241static void h__dump (const unsigned char *p, int len)
242{
243 for (; len --; p++) fprintf(stderr, "%02X ", *p);
244 fprintf(stderr, "\n");
245}
246#endif
247#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-25 02:35:18 +0000