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];
132 if ((pkey = NETSCAPE_PKEY_new()) == NULL)
134 if ((enckey = NETSCAPE_ENCRYPTED_PKEY_new()) == NULL)
138 pkey->algor->algorithm = OBJ_nid2obj(NID_rsaEncryption);
139 if ((pkey->algor->parameter = ASN1_TYPE_new()) == NULL)
141 pkey->algor->parameter->type = V_ASN1_NULL;
143 rsalen = i2d_RSAPrivateKey(a, NULL);
146 * Fake some octet strings just for the initial length calculation.
149 pkey->private_key->length = rsalen;
151 pkeylen = i2d_NETSCAPE_PKEY(pkey, NULL);
153 enckey->enckey->digest->length = pkeylen;
155 enckey->os->length = 11; /* "private-key" */
157 enckey->enckey->algor->algorithm = OBJ_nid2obj(NID_rc4);
158 if ((enckey->enckey->algor->parameter = ASN1_TYPE_new()) == NULL)
160 enckey->enckey->algor->parameter->type = V_ASN1_NULL;
163 olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);
164 NETSCAPE_PKEY_free(pkey);
165 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
169 /* Since its RC4 encrypted length is actual length */
170 if ((zz = (unsigned char *)OPENSSL_malloc(rsalen)) == NULL) {
171 ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
175 pkey->private_key->data = zz;
176 /* Write out private key encoding */
177 i2d_RSAPrivateKey(a, &zz);
179 if ((zz = OPENSSL_malloc(pkeylen)) == NULL) {
180 ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
184 if (!ASN1_STRING_set(enckey->os, "private-key", -1)) {
185 ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
188 enckey->enckey->digest->data = zz;
189 i2d_NETSCAPE_PKEY(pkey, &zz);
191 /* Wipe the private key encoding */
192 OPENSSL_cleanse(pkey->private_key->data, rsalen);
195 cb = EVP_read_pw_string;
196 i = cb((char *)buf, 256, "Enter Private Key password:", 1);
198 ASN1err(ASN1_F_I2D_RSA_NET, ASN1_R_BAD_PASSWORD_READ);
201 i = strlen((char *)buf);
202 /* If the key is used for SGC the algorithm is modified a little. */
204 EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
205 memcpy(buf + 16, "SGCKEYSALT", 10);
209 EVP_BytesToKey(EVP_rc4(), EVP_md5(), NULL, buf, i, 1, key, NULL);
210 OPENSSL_cleanse(buf, 256);
212 /* Encrypt private key in place */
213 zz = enckey->enckey->digest->data;
214 EVP_CIPHER_CTX_init(&ctx);
215 EVP_EncryptInit_ex(&ctx, EVP_rc4(), NULL, key, NULL);
216 EVP_EncryptUpdate(&ctx, zz, &i, zz, pkeylen);
217 EVP_EncryptFinal_ex(&ctx, zz + i, &j);
218 EVP_CIPHER_CTX_cleanup(&ctx);
220 ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);
222 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
223 NETSCAPE_PKEY_free(pkey);
227 RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length,
228 int (*cb) (char *buf, int len, const char *prompt,
231 return d2i_RSA_NET(a, pp, length, cb, 0);
234 RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length,
235 int (*cb) (char *buf, int len, const char *prompt,
236 int verify), int sgckey)
239 const unsigned char *p;
240 NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
244 enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);
246 ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_DECODING_ERROR);
250 if ((enckey->os->length != 11) || (strncmp("private-key",
251 (char *)enckey->os->data,
253 ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_PRIVATE_KEY_HEADER_MISSING);
254 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
257 if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4) {
258 ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
262 cb = EVP_read_pw_string;
263 if ((ret = d2i_RSA_NET_2(a, enckey->enckey->digest, cb, sgckey)) == NULL)
269 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
274 static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
275 int (*cb) (char *buf, int len, const char *prompt,
276 int verify), int sgckey)
278 NETSCAPE_PKEY *pkey = NULL;
281 unsigned char buf[256];
282 const unsigned char *zz;
283 unsigned char key[EVP_MAX_KEY_LENGTH];
286 i = cb((char *)buf, 256, "Enter Private Key password:", 0);
288 ASN1err(ASN1_F_D2I_RSA_NET_2, ASN1_R_BAD_PASSWORD_READ);
292 i = strlen((char *)buf);
294 EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
295 memcpy(buf + 16, "SGCKEYSALT", 10);
299 EVP_BytesToKey(EVP_rc4(), EVP_md5(), NULL, buf, i, 1, key, NULL);
300 OPENSSL_cleanse(buf, 256);
302 EVP_CIPHER_CTX_init(&ctx);
303 EVP_DecryptInit_ex(&ctx, EVP_rc4(), NULL, key, NULL);
304 EVP_DecryptUpdate(&ctx, os->data, &i, os->data, os->length);
305 EVP_DecryptFinal_ex(&ctx, &(os->data[i]), &j);
306 EVP_CIPHER_CTX_cleanup(&ctx);
311 if ((pkey = d2i_NETSCAPE_PKEY(NULL, &zz, os->length)) == NULL) {
312 ASN1err(ASN1_F_D2I_RSA_NET_2,
313 ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
317 zz = pkey->private_key->data;
318 if ((ret = d2i_RSAPrivateKey(a, &zz, pkey->private_key->length)) == NULL) {
319 ASN1err(ASN1_F_D2I_RSA_NET_2, ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
323 NETSCAPE_PKEY_free(pkey);
327 # endif /* OPENSSL_NO_RC4 */
329 #else /* !OPENSSL_NO_RSA */
332 static void *dummy = &dummy;