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d02b48c6 | 1 | /* crypto/asn1/n_pkey.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
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. | |
8 | * | |
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). | |
15 | * | |
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. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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)" | |
40 | * | |
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 | |
51 | * SUCH DAMAGE. | |
52 | * | |
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.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "cryptlib.h" | |
61 | #include "rsa.h" | |
62 | #include "objects.h" | |
63 | #include "asn1_mac.h" | |
64 | #include "evp.h" | |
65 | #include "x509.h" | |
66 | ||
67 | ||
68 | #ifndef NO_RC4 | |
69 | ||
70 | typedef struct netscape_pkey_st | |
71 | { | |
72 | ASN1_INTEGER *version; | |
73 | X509_ALGOR *algor; | |
74 | ASN1_OCTET_STRING *private_key; | |
75 | } NETSCAPE_PKEY; | |
76 | ||
77 | /* | |
78 | * ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_LENGTH_MISMATCH); | |
79 | * ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_DECODING_ERROR); | |
80 | * ASN1err(ASN1_F_D2I_NETSCAPE_PKEY,ASN1_R_DECODING_ERROR); | |
81 | * ASN1err(ASN1_F_NETSCAPE_PKEY_NEW,ASN1_R_DECODING_ERROR); | |
82 | */ | |
83 | #ifndef NOPROTO | |
d02b48c6 RE |
84 | static int i2d_NETSCAPE_PKEY(NETSCAPE_PKEY *a, unsigned char **pp); |
85 | static NETSCAPE_PKEY *d2i_NETSCAPE_PKEY(NETSCAPE_PKEY **a,unsigned char **pp, long length); | |
86 | static NETSCAPE_PKEY *NETSCAPE_PKEY_new(void); | |
87 | static void NETSCAPE_PKEY_free(NETSCAPE_PKEY *); | |
88 | #else | |
d02b48c6 RE |
89 | static int i2d_NETSCAPE_PKEY(); |
90 | static NETSCAPE_PKEY *d2i_NETSCAPE_PKEY(); | |
91 | static NETSCAPE_PKEY *NETSCAPE_PKEY_new(); | |
92 | static void NETSCAPE_PKEY_free(); | |
93 | #endif | |
94 | ||
95 | int i2d_Netscape_RSA(a,pp,cb) | |
96 | RSA *a; | |
97 | unsigned char **pp; | |
98 | int (*cb)(); | |
99 | { | |
100 | int i,j,l[6]; | |
101 | NETSCAPE_PKEY *pkey; | |
102 | unsigned char buf[256],*zz; | |
103 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
104 | EVP_CIPHER_CTX ctx; | |
105 | X509_ALGOR *alg=NULL; | |
106 | ASN1_OCTET_STRING os,os2; | |
107 | M_ASN1_I2D_vars(a); | |
108 | ||
109 | if (a == NULL) return(0); | |
110 | ||
111 | #ifdef WIN32 | |
112 | r=r; /* shut the damn compiler up :-) */ | |
113 | #endif | |
114 | ||
115 | os.data=os2.data=NULL; | |
116 | if ((pkey=NETSCAPE_PKEY_new()) == NULL) goto err; | |
117 | if (!ASN1_INTEGER_set(pkey->version,0)) goto err; | |
118 | ||
119 | if (pkey->algor->algorithm != NULL) | |
120 | ASN1_OBJECT_free(pkey->algor->algorithm); | |
121 | pkey->algor->algorithm=OBJ_nid2obj(NID_rsaEncryption); | |
122 | if ((pkey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err; | |
123 | pkey->algor->parameter->type=V_ASN1_NULL; | |
124 | ||
125 | l[0]=i2d_RSAPrivateKey(a,NULL); | |
126 | pkey->private_key->length=l[0]; | |
127 | ||
128 | os2.length=i2d_NETSCAPE_PKEY(pkey,NULL); | |
129 | l[1]=i2d_ASN1_OCTET_STRING(&os2,NULL); | |
130 | ||
131 | if ((alg=X509_ALGOR_new()) == NULL) goto err; | |
132 | if (alg->algorithm != NULL) | |
133 | ASN1_OBJECT_free(alg->algorithm); | |
134 | alg->algorithm=OBJ_nid2obj(NID_rc4); | |
135 | if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err; | |
136 | alg->parameter->type=V_ASN1_NULL; | |
137 | ||
138 | l[2]=i2d_X509_ALGOR(alg,NULL); | |
139 | l[3]=ASN1_object_size(1,l[2]+l[1],V_ASN1_SEQUENCE); | |
140 | ||
141 | os.data=(unsigned char *)"private-key"; | |
142 | os.length=11; | |
143 | l[4]=i2d_ASN1_OCTET_STRING(&os,NULL); | |
144 | ||
145 | l[5]=ASN1_object_size(1,l[4]+l[3],V_ASN1_SEQUENCE); | |
146 | ||
147 | if (pp == NULL) | |
148 | { | |
149 | if (pkey != NULL) NETSCAPE_PKEY_free(pkey); | |
150 | if (alg != NULL) X509_ALGOR_free(alg); | |
151 | return(l[5]); | |
152 | } | |
153 | ||
154 | if (pkey->private_key->data != NULL) | |
155 | Free((char *)pkey->private_key->data); | |
156 | if ((pkey->private_key->data=(unsigned char *)Malloc(l[0])) == NULL) | |
157 | { | |
158 | ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE); | |
159 | goto err; | |
160 | } | |
161 | zz=pkey->private_key->data; | |
162 | i2d_RSAPrivateKey(a,&zz); | |
163 | ||
164 | if ((os2.data=(unsigned char *)Malloc(os2.length)) == NULL) | |
165 | { | |
166 | ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ERR_R_MALLOC_FAILURE); | |
167 | goto err; | |
168 | } | |
169 | zz=os2.data; | |
170 | i2d_NETSCAPE_PKEY(pkey,&zz); | |
171 | ||
172 | if (cb == NULL) | |
173 | cb=EVP_read_pw_string; | |
174 | i=cb(buf,256,"Enter Private Key password:",1); | |
175 | if (i != 0) | |
176 | { | |
177 | ASN1err(ASN1_F_I2D_NETSCAPE_RSA,ASN1_R_BAD_PASSWORD_READ); | |
178 | goto err; | |
179 | } | |
180 | EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf, | |
181 | strlen((char *)buf),1,key,NULL); | |
182 | memset(buf,0,256); | |
58964a49 RE |
183 | |
184 | EVP_CIPHER_CTX_init(&ctx); | |
d02b48c6 RE |
185 | EVP_EncryptInit(&ctx,EVP_rc4(),key,NULL); |
186 | EVP_EncryptUpdate(&ctx,os2.data,&i,os2.data,os2.length); | |
187 | EVP_EncryptFinal(&ctx,&(os2.data[i]),&j); | |
188 | EVP_CIPHER_CTX_cleanup(&ctx); | |
189 | ||
190 | p= *pp; | |
191 | ASN1_put_object(&p,1,l[4]+l[3],V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); | |
192 | i2d_ASN1_OCTET_STRING(&os,&p); | |
193 | ASN1_put_object(&p,1,l[2]+l[1],V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); | |
194 | i2d_X509_ALGOR(alg,&p); | |
195 | i2d_ASN1_OCTET_STRING(&os2,&p); | |
196 | ret=l[5]; | |
197 | err: | |
198 | if (os2.data != NULL) Free((char *)os2.data); | |
199 | if (alg != NULL) X509_ALGOR_free(alg); | |
200 | if (pkey != NULL) NETSCAPE_PKEY_free(pkey); | |
201 | r=r; | |
202 | return(ret); | |
203 | } | |
204 | ||
205 | RSA *d2i_Netscape_RSA(a,pp,length,cb) | |
206 | RSA **a; | |
207 | unsigned char **pp; | |
208 | long length; | |
209 | int (*cb)(); | |
210 | { | |
211 | RSA *ret=NULL; | |
212 | ASN1_OCTET_STRING *os=NULL; | |
213 | ASN1_CTX c; | |
214 | ||
215 | c.pp=pp; | |
216 | c.error=ASN1_R_DECODING_ERROR; | |
217 | ||
218 | M_ASN1_D2I_Init(); | |
219 | M_ASN1_D2I_start_sequence(); | |
220 | M_ASN1_D2I_get(os,d2i_ASN1_OCTET_STRING); | |
221 | if ((os->length != 11) || (strncmp("private-key", | |
222 | (char *)os->data,os->length) != 0)) | |
223 | { | |
224 | ASN1err(ASN1_F_D2I_NETSCAPE_RSA,ASN1_R_PRIVATE_KEY_HEADER_MISSING); | |
225 | ASN1_BIT_STRING_free(os); | |
226 | goto err; | |
227 | } | |
228 | ASN1_BIT_STRING_free(os); | |
229 | c.q=c.p; | |
230 | if ((ret=d2i_Netscape_RSA_2(a,&c.p,c.slen,cb)) == NULL) goto err; | |
231 | c.slen-=(c.p-c.q); | |
232 | ||
233 | M_ASN1_D2I_Finish(a,RSA_free,ASN1_F_D2I_NETSCAPE_RSA); | |
234 | } | |
235 | ||
58964a49 | 236 | RSA *d2i_Netscape_RSA_2(a,pp,length,cb) |
d02b48c6 RE |
237 | RSA **a; |
238 | unsigned char **pp; | |
239 | long length; | |
240 | int (*cb)(); | |
241 | { | |
242 | NETSCAPE_PKEY *pkey=NULL; | |
243 | RSA *ret=NULL; | |
244 | int i,j; | |
245 | unsigned char buf[256],*zz; | |
246 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
247 | EVP_CIPHER_CTX ctx; | |
248 | X509_ALGOR *alg=NULL; | |
249 | ASN1_OCTET_STRING *os=NULL; | |
250 | ASN1_CTX c; | |
251 | ||
252 | c.error=ASN1_R_ERROR_STACK; | |
253 | c.pp=pp; | |
254 | ||
255 | M_ASN1_D2I_Init(); | |
256 | M_ASN1_D2I_start_sequence(); | |
257 | M_ASN1_D2I_get(alg,d2i_X509_ALGOR); | |
258 | if (OBJ_obj2nid(alg->algorithm) != NID_rc4) | |
259 | { | |
260 | ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM); | |
261 | goto err; | |
262 | } | |
263 | M_ASN1_D2I_get(os,d2i_ASN1_OCTET_STRING); | |
264 | if (cb == NULL) | |
265 | cb=EVP_read_pw_string; | |
266 | i=cb(buf,256,"Enter Private Key password:",0); | |
267 | if (i != 0) | |
268 | { | |
269 | ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_BAD_PASSWORD_READ); | |
270 | goto err; | |
271 | } | |
272 | ||
273 | EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf, | |
274 | strlen((char *)buf),1,key,NULL); | |
275 | memset(buf,0,256); | |
58964a49 RE |
276 | |
277 | EVP_CIPHER_CTX_init(&ctx); | |
d02b48c6 RE |
278 | EVP_DecryptInit(&ctx,EVP_rc4(),key,NULL); |
279 | EVP_DecryptUpdate(&ctx,os->data,&i,os->data,os->length); | |
280 | EVP_DecryptFinal(&ctx,&(os->data[i]),&j); | |
281 | EVP_CIPHER_CTX_cleanup(&ctx); | |
282 | os->length=i+j; | |
283 | ||
284 | zz=os->data; | |
285 | ||
286 | if ((pkey=d2i_NETSCAPE_PKEY(NULL,&zz,os->length)) == NULL) | |
287 | { | |
288 | ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY); | |
289 | goto err; | |
290 | } | |
291 | ||
292 | zz=pkey->private_key->data; | |
293 | if ((ret=d2i_RSAPrivateKey(a,&zz,pkey->private_key->length)) == NULL) | |
294 | { | |
295 | ASN1err(ASN1_F_D2I_NETSCAPE_RSA_2,ASN1_R_UNABLE_TO_DECODE_RSA_KEY); | |
296 | goto err; | |
297 | } | |
298 | if (!asn1_Finish(&c)) goto err; | |
299 | *pp=c.p; | |
300 | err: | |
301 | if (pkey != NULL) NETSCAPE_PKEY_free(pkey); | |
302 | if (os != NULL) ASN1_BIT_STRING_free(os); | |
303 | if (alg != NULL) X509_ALGOR_free(alg); | |
304 | return(ret); | |
305 | } | |
306 | ||
307 | static int i2d_NETSCAPE_PKEY(a,pp) | |
308 | NETSCAPE_PKEY *a; | |
309 | unsigned char **pp; | |
310 | { | |
311 | M_ASN1_I2D_vars(a); | |
312 | ||
313 | ||
314 | M_ASN1_I2D_len(a->version, i2d_ASN1_INTEGER); | |
315 | M_ASN1_I2D_len(a->algor, i2d_X509_ALGOR); | |
316 | M_ASN1_I2D_len(a->private_key, i2d_ASN1_OCTET_STRING); | |
317 | ||
318 | M_ASN1_I2D_seq_total(); | |
319 | ||
320 | M_ASN1_I2D_put(a->version, i2d_ASN1_INTEGER); | |
321 | M_ASN1_I2D_put(a->algor, i2d_X509_ALGOR); | |
322 | M_ASN1_I2D_put(a->private_key, i2d_ASN1_OCTET_STRING); | |
323 | ||
324 | M_ASN1_I2D_finish(); | |
325 | } | |
326 | ||
327 | static NETSCAPE_PKEY *d2i_NETSCAPE_PKEY(a,pp,length) | |
328 | NETSCAPE_PKEY **a; | |
329 | unsigned char **pp; | |
330 | long length; | |
331 | { | |
332 | M_ASN1_D2I_vars(a,NETSCAPE_PKEY *,NETSCAPE_PKEY_new); | |
333 | ||
334 | M_ASN1_D2I_Init(); | |
335 | M_ASN1_D2I_start_sequence(); | |
336 | M_ASN1_D2I_get(ret->version,d2i_ASN1_INTEGER); | |
337 | M_ASN1_D2I_get(ret->algor,d2i_X509_ALGOR); | |
338 | M_ASN1_D2I_get(ret->private_key,d2i_ASN1_OCTET_STRING); | |
339 | M_ASN1_D2I_Finish(a,NETSCAPE_PKEY_free,ASN1_F_D2I_NETSCAPE_PKEY); | |
340 | } | |
341 | ||
342 | static NETSCAPE_PKEY *NETSCAPE_PKEY_new() | |
343 | { | |
344 | NETSCAPE_PKEY *ret=NULL; | |
345 | ||
346 | M_ASN1_New_Malloc(ret,NETSCAPE_PKEY); | |
347 | M_ASN1_New(ret->version,ASN1_INTEGER_new); | |
348 | M_ASN1_New(ret->algor,X509_ALGOR_new); | |
349 | M_ASN1_New(ret->private_key,ASN1_OCTET_STRING_new); | |
350 | return(ret); | |
351 | M_ASN1_New_Error(ASN1_F_NETSCAPE_PKEY_NEW); | |
352 | } | |
353 | ||
354 | static void NETSCAPE_PKEY_free(a) | |
355 | NETSCAPE_PKEY *a; | |
356 | { | |
357 | if (a == NULL) return; | |
358 | ASN1_INTEGER_free(a->version); | |
359 | X509_ALGOR_free(a->algor); | |
360 | ASN1_OCTET_STRING_free(a->private_key); | |
361 | Free((char *)a); | |
362 | } | |
363 | ||
364 | #endif /* NO_RC4 */ | |
365 |