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.]
59 #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>
70 #ifndef OPENSSL_NO_RC4
72 typedef struct netscape_pkey_st
76 ASN1_OCTET_STRING *private_key;
79 typedef struct netscape_encrypted_pkey_st
81 ASN1_OCTET_STRING *os;
82 /* This is the same structure as DigestInfo so use it:
83 * although this isn't really anything to do with
87 } NETSCAPE_ENCRYPTED_PKEY;
90 ASN1_BROKEN_SEQUENCE(NETSCAPE_ENCRYPTED_PKEY) = {
91 ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, os, ASN1_OCTET_STRING),
92 ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, enckey, X509_SIG)
93 } ASN1_BROKEN_SEQUENCE_END(NETSCAPE_ENCRYPTED_PKEY)
95 IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
97 ASN1_SEQUENCE(NETSCAPE_PKEY) = {
98 ASN1_SIMPLE(NETSCAPE_PKEY, version, LONG),
99 ASN1_SIMPLE(NETSCAPE_PKEY, algor, X509_ALGOR),
100 ASN1_SIMPLE(NETSCAPE_PKEY, private_key, ASN1_OCTET_STRING)
101 } ASN1_SEQUENCE_END(NETSCAPE_PKEY)
103 IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
105 static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
106 int (*cb)(), int sgckey);
108 int i2d_Netscape_RSA(const RSA *a, unsigned char **pp, int (*cb)())
110 return i2d_RSA_NET(a, pp, cb, 0);
113 int i2d_RSA_NET(const RSA *a, unsigned char **pp, int (*cb)(), int sgckey)
116 int rsalen, pkeylen, olen;
117 NETSCAPE_PKEY *pkey = NULL;
118 NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
119 unsigned char buf[256],*zz;
120 unsigned char key[EVP_MAX_KEY_LENGTH];
123 if (a == NULL) return(0);
125 if ((pkey=NETSCAPE_PKEY_new()) == NULL) goto err;
126 if ((enckey=NETSCAPE_ENCRYPTED_PKEY_new()) == NULL) goto err;
129 pkey->algor->algorithm=OBJ_nid2obj(NID_rsaEncryption);
130 if ((pkey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
131 pkey->algor->parameter->type=V_ASN1_NULL;
133 rsalen = i2d_RSAPrivateKey(a, NULL);
135 /* Fake some octet strings just for the initial length
139 pkey->private_key->length=rsalen;
141 pkeylen=i2d_NETSCAPE_PKEY(pkey,NULL);
143 enckey->enckey->digest->length = pkeylen;
145 enckey->os->length = 11; /* "private-key" */
147 enckey->enckey->algor->algorithm=OBJ_nid2obj(NID_rc4);
148 if ((enckey->enckey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
149 enckey->enckey->algor->parameter->type=V_ASN1_NULL;
153 olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);
154 NETSCAPE_PKEY_free(pkey);
155 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
160 /* Since its RC4 encrypted length is actual length */
161 if ((zz=(unsigned char *)OPENSSL_malloc(rsalen)) == NULL)
163 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);
167 pkey->private_key->data = zz;
168 /* Write out private key encoding */
169 i2d_RSAPrivateKey(a,&zz);
171 if ((zz=OPENSSL_malloc(pkeylen)) == NULL)
173 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);
177 if (!ASN1_STRING_set(enckey->os, "private-key", -1))
179 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);
182 enckey->enckey->digest->data = zz;
183 i2d_NETSCAPE_PKEY(pkey,&zz);
185 /* Wipe the private key encoding */
186 memset(pkey->private_key->data, 0, rsalen);
189 cb=EVP_read_pw_string;
190 i=cb(buf,256,"Enter Private Key password:",1);
193 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ASN1_R_BAD_PASSWORD_READ);
196 i = strlen((char *)buf);
197 /* If the key is used for SGC the algorithm is modified a little. */
199 EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
200 memcpy(buf + 16, "SGCKEYSALT", 10);
204 EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
207 /* Encrypt private key in place */
208 zz = enckey->enckey->digest->data;
209 EVP_CIPHER_CTX_init(&ctx);
210 EVP_EncryptInit_ex(&ctx,EVP_rc4(),NULL,key,NULL);
211 EVP_EncryptUpdate(&ctx,zz,&i,zz,pkeylen);
212 EVP_EncryptFinal_ex(&ctx,zz + i,&j);
213 EVP_CIPHER_CTX_cleanup(&ctx);
215 ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);
217 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
218 NETSCAPE_PKEY_free(pkey);
223 RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length, int (*cb)())
225 return d2i_RSA_NET(a, pp, length, cb, 0);
228 RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length, int (*cb)(), int sgckey)
231 const unsigned char *p, *kp;
232 NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
236 enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);
238 ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_DECODING_ERROR);
242 if ((enckey->os->length != 11) || (strncmp("private-key",
243 (char *)enckey->os->data,11) != 0))
245 ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_PRIVATE_KEY_HEADER_MISSING);
246 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
249 if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4)
251 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
254 kp = enckey->enckey->digest->data;
256 cb=EVP_read_pw_string;
257 if ((ret=d2i_RSA_NET_2(a, enckey->enckey->digest,cb, sgckey)) == NULL) goto err;
262 NETSCAPE_ENCRYPTED_PKEY_free(enckey);
267 static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
268 int (*cb)(), int sgckey)
270 NETSCAPE_PKEY *pkey=NULL;
273 unsigned char buf[256];
274 const unsigned char *zz;
275 unsigned char key[EVP_MAX_KEY_LENGTH];
278 i=cb(buf,256,"Enter Private Key password:",0);
281 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_BAD_PASSWORD_READ);
285 i = strlen((char *)buf);
287 EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
288 memcpy(buf + 16, "SGCKEYSALT", 10);
292 EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
295 EVP_CIPHER_CTX_init(&ctx);
296 EVP_DecryptInit_ex(&ctx,EVP_rc4(),NULL, key,NULL);
297 EVP_DecryptUpdate(&ctx,os->data,&i,os->data,os->length);
298 EVP_DecryptFinal_ex(&ctx,&(os->data[i]),&j);
299 EVP_CIPHER_CTX_cleanup(&ctx);
304 if ((pkey=d2i_NETSCAPE_PKEY(NULL,&zz,os->length)) == NULL)
306 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
310 zz=pkey->private_key->data;
311 if ((ret=d2i_RSAPrivateKey(a,&zz,pkey->private_key->length)) == NULL)
313 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
317 NETSCAPE_PKEY_free(pkey);
321 #endif /* OPENSSL_NO_RC4 */
323 #else /* !OPENSSL_NO_RSA */
326 static void *dummy=&dummy;