1 /* crypto/asn1/n_pkey.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #ifndef OPENSSL_NO_RSA
62 # include <openssl/rsa.h>
63 # include <openssl/objects.h>
64 # include <openssl/asn1t.h>
65 # include <openssl/asn1_mac.h>
66 # include <openssl/evp.h>
67 # include <openssl/x509.h>
69 # ifndef OPENSSL_NO_RC4
71 typedef struct netscape_pkey_st {
74 ASN1_OCTET_STRING *private_key;
77 typedef struct netscape_encrypted_pkey_st {
78 ASN1_OCTET_STRING *os;
80 * This is the same structure as DigestInfo so use it: although this
81 * isn't really anything to do with digests.
84 } NETSCAPE_ENCRYPTED_PKEY;
87 ASN1_BROKEN_SEQUENCE(NETSCAPE_ENCRYPTED_PKEY) = {
88 ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, os, ASN1_OCTET_STRING),
89 ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, enckey, X509_SIG)
90 } ASN1_BROKEN_SEQUENCE_END(NETSCAPE_ENCRYPTED_PKEY)
92 DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
93 DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY,NETSCAPE_ENCRYPTED_PKEY)
94 IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
96 ASN1_SEQUENCE(NETSCAPE_PKEY) = {
97 ASN1_SIMPLE(NETSCAPE_PKEY, version, LONG),
98 ASN1_SIMPLE(NETSCAPE_PKEY, algor, X509_ALGOR),
99 ASN1_SIMPLE(NETSCAPE_PKEY, private_key, ASN1_OCTET_STRING)
100 } ASN1_SEQUENCE_END(NETSCAPE_PKEY)
102 DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
103 DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_PKEY,NETSCAPE_PKEY)
104 IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
106 static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
107 int (*cb) (char *buf, int len, const char *prompt,
108 int verify), int sgckey);
110 int i2d_Netscape_RSA(const RSA *a, unsigned char **pp,
111 int (*cb) (char *buf, int len, const char *prompt,
114 return i2d_RSA_NET(a, pp, cb, 0);
117 int i2d_RSA_NET(const RSA *a, unsigned char **pp,
118 int (*cb) (char *buf, int len, const char *prompt,
119 int verify), int sgckey)
122 int rsalen, pkeylen, olen;
123 NETSCAPE_PKEY *pkey = NULL;
124 NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
125 unsigned char buf[256], *zz;
126 unsigned char key[EVP_MAX_KEY_LENGTH];
128 EVP_CIPHER_CTX_init(&ctx);
133 if ((pkey = NETSCAPE_PKEY_new()) == NULL)
135 if ((enckey = NETSCAPE_ENCRYPTED_PKEY_new()) == NULL)
139 pkey->algor->algorithm = OBJ_nid2obj(NID_rsaEncryption);
140 if ((pkey->algor->parameter = ASN1_TYPE_new()) == NULL)
142 pkey->algor->parameter->type = V_ASN1_NULL;
144 rsalen = i2d_RSAPrivateKey(a, NULL);
147 * Fake some octet strings just for the initial length calculation.
150 pkey->private_key->length = rsalen;
152 pkeylen = i2d_NETSCAPE_PKEY(pkey, NULL);
154 enckey->enckey->digest->length = pkeylen;
156 enckey->os->length = 11; /* "private-key" */
158 enckey->enckey->algor->algorithm = OBJ_nid2obj(NID_rc4);
159 if ((enckey->enckey->algor->parameter = ASN1_TYPE_new()) == NULL)
161 enckey->enckey->algor->parameter->type = V_ASN1_NULL;
164 olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);
165 NETSCAPE_PKEY_free(pkey);
166 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
170 /* Since its RC4 encrypted length is actual length */
171 if ((zz = (unsigned char *)OPENSSL_malloc(rsalen)) == NULL) {
172 ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
176 pkey->private_key->data = zz;
177 /* Write out private key encoding */
178 i2d_RSAPrivateKey(a, &zz);
180 if ((zz = OPENSSL_malloc(pkeylen)) == NULL) {
181 ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
185 if (!ASN1_STRING_set(enckey->os, "private-key", -1)) {
186 ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
189 enckey->enckey->digest->data = zz;
190 i2d_NETSCAPE_PKEY(pkey, &zz);
192 /* Wipe the private key encoding */
193 OPENSSL_cleanse(pkey->private_key->data, rsalen);
196 cb = EVP_read_pw_string;
197 i = cb((char *)buf, 256, "Enter Private Key password:", 1);
199 ASN1err(ASN1_F_I2D_RSA_NET, ASN1_R_BAD_PASSWORD_READ);
202 i = strlen((char *)buf);
203 /* If the key is used for SGC the algorithm is modified a little. */
205 if (!EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL))
207 memcpy(buf + 16, "SGCKEYSALT", 10);
211 if (!EVP_BytesToKey(EVP_rc4(), EVP_md5(), NULL, buf, i, 1, key, NULL))
213 OPENSSL_cleanse(buf, 256);
215 /* Encrypt private key in place */
216 zz = enckey->enckey->digest->data;
217 if (!EVP_EncryptInit_ex(&ctx, EVP_rc4(), NULL, key, NULL))
219 if (!EVP_EncryptUpdate(&ctx, zz, &i, zz, pkeylen))
221 if (!EVP_EncryptFinal_ex(&ctx, zz + i, &j))
224 ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);
226 EVP_CIPHER_CTX_cleanup(&ctx);
227 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
228 NETSCAPE_PKEY_free(pkey);
232 RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length,
233 int (*cb) (char *buf, int len, const char *prompt,
236 return d2i_RSA_NET(a, pp, length, cb, 0);
239 RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length,
240 int (*cb) (char *buf, int len, const char *prompt,
241 int verify), int sgckey)
244 const unsigned char *p;
245 NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
249 enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);
251 ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_DECODING_ERROR);
255 if ((enckey->os->length != 11) || (strncmp("private-key",
256 (char *)enckey->os->data,
258 ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_PRIVATE_KEY_HEADER_MISSING);
259 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
262 if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4) {
263 ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
267 cb = EVP_read_pw_string;
268 if ((ret = d2i_RSA_NET_2(a, enckey->enckey->digest, cb, sgckey)) == NULL)
274 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
279 static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
280 int (*cb) (char *buf, int len, const char *prompt,
281 int verify), int sgckey)
283 NETSCAPE_PKEY *pkey = NULL;
286 unsigned char buf[256];
287 const unsigned char *zz;
288 unsigned char key[EVP_MAX_KEY_LENGTH];
290 EVP_CIPHER_CTX_init(&ctx);
292 i = cb((char *)buf, 256, "Enter Private Key password:", 0);
294 ASN1err(ASN1_F_D2I_RSA_NET_2, ASN1_R_BAD_PASSWORD_READ);
298 i = strlen((char *)buf);
300 if (!EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL))
302 memcpy(buf + 16, "SGCKEYSALT", 10);
306 if (!EVP_BytesToKey(EVP_rc4(), EVP_md5(), NULL, buf, i, 1, key, NULL))
308 OPENSSL_cleanse(buf, 256);
310 if (!EVP_DecryptInit_ex(&ctx, EVP_rc4(), NULL, key, NULL))
312 if (!EVP_DecryptUpdate(&ctx, os->data, &i, os->data, os->length))
314 if (!EVP_DecryptFinal_ex(&ctx, &(os->data[i]), &j))
320 if ((pkey = d2i_NETSCAPE_PKEY(NULL, &zz, os->length)) == NULL) {
321 ASN1err(ASN1_F_D2I_RSA_NET_2,
322 ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
326 zz = pkey->private_key->data;
327 if ((ret = d2i_RSAPrivateKey(a, &zz, pkey->private_key->length)) == NULL) {
328 ASN1err(ASN1_F_D2I_RSA_NET_2, ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
332 EVP_CIPHER_CTX_cleanup(&ctx);
333 NETSCAPE_PKEY_free(pkey);
337 # endif /* OPENSSL_NO_RC4 */
339 #else /* !OPENSSL_NO_RSA */
342 static void *dummy = &dummy;