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.]
62 #include <openssl/rsa.h>
63 #include <openssl/objects.h>
64 #include <openssl/asn1_mac.h>
65 #include <openssl/evp.h>
66 #include <openssl/x509.h>
71 typedef struct netscape_pkey_st
73 ASN1_INTEGER *version;
75 ASN1_OCTET_STRING *private_key;
78 static int i2d_NETSCAPE_PKEY(NETSCAPE_PKEY *a, unsigned char **pp);
79 static NETSCAPE_PKEY *d2i_NETSCAPE_PKEY(NETSCAPE_PKEY **a,unsigned char **pp, long length);
80 static NETSCAPE_PKEY *NETSCAPE_PKEY_new(void);
81 static void NETSCAPE_PKEY_free(NETSCAPE_PKEY *);
83 int i2d_Netscape_RSA(RSA *a, unsigned char **pp, int (*cb)())
85 return i2d_RSA_NET(a, pp, cb, 0);
88 int i2d_RSA_NET(RSA *a, unsigned char **pp, int (*cb)(), int sgckey)
92 unsigned char buf[256],*zz;
93 unsigned char key[EVP_MAX_KEY_LENGTH];
96 ASN1_OCTET_STRING os,os2;
99 if (a == NULL) return(0);
102 r=r; /* shut the damn compiler up :-) */
105 os.data=os2.data=NULL;
106 if ((pkey=NETSCAPE_PKEY_new()) == NULL) goto err;
107 if (!ASN1_INTEGER_set(pkey->version,0)) goto err;
109 if (pkey->algor->algorithm != NULL)
110 ASN1_OBJECT_free(pkey->algor->algorithm);
111 pkey->algor->algorithm=OBJ_nid2obj(NID_rsaEncryption);
112 if ((pkey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
113 pkey->algor->parameter->type=V_ASN1_NULL;
115 l[0]=i2d_RSAPrivateKey(a,NULL);
116 pkey->private_key->length=l[0];
118 os2.length=i2d_NETSCAPE_PKEY(pkey,NULL);
119 l[1]=i2d_ASN1_OCTET_STRING(&os2,NULL);
121 if ((alg=X509_ALGOR_new()) == NULL) goto err;
122 if (alg->algorithm != NULL)
123 ASN1_OBJECT_free(alg->algorithm);
124 alg->algorithm=OBJ_nid2obj(NID_rc4);
125 if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
126 alg->parameter->type=V_ASN1_NULL;
128 l[2]=i2d_X509_ALGOR(alg,NULL);
129 l[3]=ASN1_object_size(1,l[2]+l[1],V_ASN1_SEQUENCE);
132 os.data=(unsigned char *)"private-key";
135 l[4]=i2d_ASN1_OCTET_STRING(&os,NULL);
137 l[5]=ASN1_object_size(1,l[4]+l[3],V_ASN1_SEQUENCE);
141 if (pkey != NULL) NETSCAPE_PKEY_free(pkey);
142 if (alg != NULL) X509_ALGOR_free(alg);
146 if (pkey->private_key->data != NULL)
147 OPENSSL_free(pkey->private_key->data);
148 if ((pkey->private_key->data=(unsigned char *)OPENSSL_malloc(l[0])) == NULL)
150 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);
153 zz=pkey->private_key->data;
154 i2d_RSAPrivateKey(a,&zz);
156 if ((os2.data=(unsigned char *)OPENSSL_malloc(os2.length)) == NULL)
158 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE);
162 i2d_NETSCAPE_PKEY(pkey,&zz);
165 cb=EVP_read_pw_string;
166 i=cb(buf,256,"Enter Private Key password:",1);
169 ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ASN1_R_BAD_PASSWORD_READ);
172 i = strlen((char *)buf);
173 /* If the key is used for SGC the algorithm is modified a little. */
176 EVP_DigestInit(&mctx, EVP_md5());
177 EVP_DigestUpdate(&mctx, buf, i);
178 EVP_DigestFinal(&mctx, buf, NULL);
179 memcpy(buf + 16, "SGCKEYSALT", 10);
183 EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
186 EVP_CIPHER_CTX_init(&ctx);
187 EVP_EncryptInit(&ctx,EVP_rc4(),key,NULL);
188 EVP_EncryptUpdate(&ctx,os2.data,&i,os2.data,os2.length);
189 EVP_EncryptFinal(&ctx,&(os2.data[i]),&j);
190 EVP_CIPHER_CTX_cleanup(&ctx);
193 ASN1_put_object(&p,1,l[4]+l[3],V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
194 i2d_ASN1_OCTET_STRING(&os,&p);
195 ASN1_put_object(&p,1,l[2]+l[1],V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
196 i2d_X509_ALGOR(alg,&p);
197 i2d_ASN1_OCTET_STRING(&os2,&p);
200 if (os2.data != NULL) OPENSSL_free(os2.data);
201 if (alg != NULL) X509_ALGOR_free(alg);
202 if (pkey != NULL) NETSCAPE_PKEY_free(pkey);
208 RSA *d2i_Netscape_RSA(RSA **a, unsigned char **pp, long length, int (*cb)())
210 return d2i_RSA_NET(a, pp, length, cb, 0);
213 RSA *d2i_RSA_NET(RSA **a, unsigned char **pp, long length, int (*cb)(), int sgckey)
216 ASN1_OCTET_STRING *os=NULL;
220 c.error=ASN1_R_DECODING_ERROR;
223 M_ASN1_D2I_start_sequence();
224 M_ASN1_D2I_get(os,d2i_ASN1_OCTET_STRING);
225 if ((os->length != 11) || (strncmp("private-key",
226 (char *)os->data,os->length) != 0))
228 ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_PRIVATE_KEY_HEADER_MISSING);
229 M_ASN1_BIT_STRING_free(os);
232 M_ASN1_BIT_STRING_free(os);
234 if ((ret=d2i_RSA_NET_2(a,&c.p,c.slen,cb, sgckey)) == NULL) goto err;
235 /* Note: some versions of IIS key files use length values that are
236 * too small for the surrounding SEQUENCEs. This following line
237 * effectively disable length checking.
241 M_ASN1_D2I_Finish(a,RSA_free,ASN1_F_D2I_NETSCAPE_RSA);
244 RSA *d2i_Netscape_RSA_2(RSA **a, unsigned char **pp, long length,
247 return d2i_RSA_NET_2(a, pp, length, cb, 0);
250 RSA *d2i_RSA_NET_2(RSA **a, unsigned char **pp, long length,
251 int (*cb)(), int sgckey)
253 NETSCAPE_PKEY *pkey=NULL;
256 unsigned char buf[256],*zz;
257 unsigned char key[EVP_MAX_KEY_LENGTH];
259 X509_ALGOR *alg=NULL;
260 ASN1_OCTET_STRING *os=NULL;
263 c.error=ERR_R_NESTED_ASN1_ERROR;
267 M_ASN1_D2I_start_sequence();
268 M_ASN1_D2I_get(alg,d2i_X509_ALGOR);
269 if (OBJ_obj2nid(alg->algorithm) != NID_rc4)
271 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
274 M_ASN1_D2I_get(os,d2i_ASN1_OCTET_STRING);
276 cb=EVP_read_pw_string;
277 i=cb(buf,256,"Enter Private Key password:",0);
280 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_BAD_PASSWORD_READ);
284 i = strlen((char *)buf);
287 EVP_DigestInit(&mctx, EVP_md5());
288 EVP_DigestUpdate(&mctx, buf, i);
289 EVP_DigestFinal(&mctx, buf, NULL);
290 memcpy(buf + 16, "SGCKEYSALT", 10);
294 EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
297 EVP_CIPHER_CTX_init(&ctx);
298 EVP_DecryptInit(&ctx,EVP_rc4(),key,NULL);
299 EVP_DecryptUpdate(&ctx,os->data,&i,os->data,os->length);
300 EVP_DecryptFinal(&ctx,&(os->data[i]),&j);
301 EVP_CIPHER_CTX_cleanup(&ctx);
306 if ((pkey=d2i_NETSCAPE_PKEY(NULL,&zz,os->length)) == NULL)
308 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
312 zz=pkey->private_key->data;
313 if ((ret=d2i_RSAPrivateKey(a,&zz,pkey->private_key->length)) == NULL)
315 ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
318 if (!asn1_Finish(&c)) goto err;
321 if (pkey != NULL) NETSCAPE_PKEY_free(pkey);
322 if (os != NULL) M_ASN1_BIT_STRING_free(os);
323 if (alg != NULL) X509_ALGOR_free(alg);
327 static int i2d_NETSCAPE_PKEY(NETSCAPE_PKEY *a, unsigned char **pp)
332 M_ASN1_I2D_len(a->version, i2d_ASN1_INTEGER);
333 M_ASN1_I2D_len(a->algor, i2d_X509_ALGOR);
334 M_ASN1_I2D_len(a->private_key, i2d_ASN1_OCTET_STRING);
336 M_ASN1_I2D_seq_total();
338 M_ASN1_I2D_put(a->version, i2d_ASN1_INTEGER);
339 M_ASN1_I2D_put(a->algor, i2d_X509_ALGOR);
340 M_ASN1_I2D_put(a->private_key, i2d_ASN1_OCTET_STRING);
345 static NETSCAPE_PKEY *d2i_NETSCAPE_PKEY(NETSCAPE_PKEY **a, unsigned char **pp,
348 M_ASN1_D2I_vars(a,NETSCAPE_PKEY *,NETSCAPE_PKEY_new);
351 M_ASN1_D2I_start_sequence();
352 M_ASN1_D2I_get(ret->version,d2i_ASN1_INTEGER);
353 M_ASN1_D2I_get(ret->algor,d2i_X509_ALGOR);
354 M_ASN1_D2I_get(ret->private_key,d2i_ASN1_OCTET_STRING);
355 M_ASN1_D2I_Finish(a,NETSCAPE_PKEY_free,ASN1_F_D2I_NETSCAPE_PKEY);
358 static NETSCAPE_PKEY *NETSCAPE_PKEY_new(void)
360 NETSCAPE_PKEY *ret=NULL;
363 M_ASN1_New_Malloc(ret,NETSCAPE_PKEY);
364 M_ASN1_New(ret->version,M_ASN1_INTEGER_new);
365 M_ASN1_New(ret->algor,X509_ALGOR_new);
366 M_ASN1_New(ret->private_key,M_ASN1_OCTET_STRING_new);
368 M_ASN1_New_Error(ASN1_F_NETSCAPE_PKEY_NEW);
371 static void NETSCAPE_PKEY_free(NETSCAPE_PKEY *a)
373 if (a == NULL) return;
374 M_ASN1_INTEGER_free(a->version);
375 X509_ALGOR_free(a->algor);
376 M_ASN1_OCTET_STRING_free(a->private_key);
385 static void *dummy=&dummy;