]>
Commit | Line | Data |
---|---|---|
d02b48c6 | 1 | /* crypto/pem/pem_lib.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" | |
ec577822 BM |
61 | #include <openssl/buffer.h> |
62 | #include <openssl/objects.h> | |
63 | #include <openssl/evp.h> | |
64 | #include <openssl/rand.h> | |
65 | #include <openssl/x509.h> | |
66 | #include <openssl/pem.h> | |
095ce353 | 67 | #include <openssl/pkcs12.h> |
cf1b7d96 | 68 | #ifndef OPENSSL_NO_DES |
ec577822 | 69 | #include <openssl/des.h> |
d02b48c6 RE |
70 | #endif |
71 | ||
e778802f | 72 | const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT; |
d02b48c6 RE |
73 | |
74 | #define MIN_LENGTH 4 | |
75 | ||
8c3c5701 | 76 | static int load_iv(char **fromp,unsigned char *to, int num); |
ce1b4fe1 | 77 | static int check_pem(const char *nm, const char *name); |
1241126a DSH |
78 | |
79 | int PEM_def_callback(char *buf, int num, int w, void *key) | |
d02b48c6 | 80 | { |
cf1b7d96 | 81 | #ifdef OPENSSL_NO_FP_API |
d02b48c6 RE |
82 | /* We should not ever call the default callback routine from |
83 | * windows. */ | |
84 | PEMerr(PEM_F_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
85 | return(-1); | |
86 | #else | |
87 | int i,j; | |
e778802f | 88 | const char *prompt; |
a3fe382e DSH |
89 | if(key) { |
90 | i=strlen(key); | |
91 | i=(i > num)?num:i; | |
92 | memcpy(buf,key,i); | |
93 | return(i); | |
94 | } | |
d02b48c6 RE |
95 | |
96 | prompt=EVP_get_pw_prompt(); | |
97 | if (prompt == NULL) | |
98 | prompt="Enter PEM pass phrase:"; | |
99 | ||
100 | for (;;) | |
101 | { | |
102 | i=EVP_read_pw_string(buf,num,prompt,w); | |
103 | if (i != 0) | |
104 | { | |
105 | PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD); | |
106 | memset(buf,0,(unsigned int)num); | |
107 | return(-1); | |
108 | } | |
109 | j=strlen(buf); | |
110 | if (j < MIN_LENGTH) | |
111 | { | |
112 | fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH); | |
113 | } | |
114 | else | |
115 | break; | |
116 | } | |
117 | return(j); | |
118 | #endif | |
119 | } | |
120 | ||
6b691a5c | 121 | void PEM_proc_type(char *buf, int type) |
d02b48c6 | 122 | { |
e778802f | 123 | const char *str; |
d02b48c6 RE |
124 | |
125 | if (type == PEM_TYPE_ENCRYPTED) | |
126 | str="ENCRYPTED"; | |
127 | else if (type == PEM_TYPE_MIC_CLEAR) | |
128 | str="MIC-CLEAR"; | |
129 | else if (type == PEM_TYPE_MIC_ONLY) | |
130 | str="MIC-ONLY"; | |
131 | else | |
132 | str="BAD-TYPE"; | |
133 | ||
d420ac2c RL |
134 | BUF_strlcat(buf,"Proc-Type: 4,",PEM_BUFSIZE); |
135 | BUF_strlcat(buf,str,PEM_BUFSIZE); | |
136 | BUF_strlcat(buf,"\n",PEM_BUFSIZE); | |
d02b48c6 RE |
137 | } |
138 | ||
6b691a5c | 139 | void PEM_dek_info(char *buf, const char *type, int len, char *str) |
d02b48c6 | 140 | { |
54a656ef | 141 | static const unsigned char map[17]="0123456789ABCDEF"; |
d02b48c6 RE |
142 | long i; |
143 | int j; | |
144 | ||
d420ac2c RL |
145 | BUF_strlcat(buf,"DEK-Info: ",PEM_BUFSIZE); |
146 | BUF_strlcat(buf,type,PEM_BUFSIZE); | |
147 | BUF_strlcat(buf,",",PEM_BUFSIZE); | |
d02b48c6 | 148 | j=strlen(buf); |
d420ac2c RL |
149 | if (j + (len * 2) + 1 > PEM_BUFSIZE) |
150 | return; | |
d02b48c6 RE |
151 | for (i=0; i<len; i++) |
152 | { | |
153 | buf[j+i*2] =map[(str[i]>>4)&0x0f]; | |
154 | buf[j+i*2+1]=map[(str[i] )&0x0f]; | |
155 | } | |
156 | buf[j+i*2]='\n'; | |
157 | buf[j+i*2+1]='\0'; | |
158 | } | |
159 | ||
cf1b7d96 | 160 | #ifndef OPENSSL_NO_FP_API |
8bb826ee BL |
161 | void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x, |
162 | pem_password_cb *cb, void *u) | |
d02b48c6 RE |
163 | { |
164 | BIO *b; | |
41a15c4f | 165 | void *ret; |
d02b48c6 RE |
166 | |
167 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
168 | { | |
169 | PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB); | |
170 | return(0); | |
171 | } | |
172 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
74678cc2 | 173 | ret=PEM_ASN1_read_bio(d2i,name,b,x,cb,u); |
d02b48c6 RE |
174 | BIO_free(b); |
175 | return(ret); | |
176 | } | |
177 | #endif | |
178 | ||
ce1b4fe1 DSH |
179 | static int check_pem(const char *nm, const char *name) |
180 | { | |
181 | /* Normal matching nm and name */ | |
182 | if (!strcmp(nm,name)) return 1; | |
183 | ||
184 | /* Make PEM_STRING_EVP_PKEY match any private key */ | |
185 | ||
186 | if(!strcmp(nm,PEM_STRING_PKCS8) && | |
187 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
188 | ||
189 | if(!strcmp(nm,PEM_STRING_PKCS8INF) && | |
190 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
191 | ||
192 | if(!strcmp(nm,PEM_STRING_RSA) && | |
193 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
194 | ||
195 | if(!strcmp(nm,PEM_STRING_DSA) && | |
196 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
197 | ||
0bee0e62 | 198 | if(!strcmp(nm,PEM_STRING_ECPRIVATEKEY) && |
4d94ae00 | 199 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; |
ce1b4fe1 DSH |
200 | /* Permit older strings */ |
201 | ||
202 | if(!strcmp(nm,PEM_STRING_X509_OLD) && | |
203 | !strcmp(name,PEM_STRING_X509)) return 1; | |
204 | ||
205 | if(!strcmp(nm,PEM_STRING_X509_REQ_OLD) && | |
206 | !strcmp(name,PEM_STRING_X509_REQ)) return 1; | |
207 | ||
208 | /* Allow normal certs to be read as trusted certs */ | |
209 | if(!strcmp(nm,PEM_STRING_X509) && | |
210 | !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1; | |
211 | ||
212 | if(!strcmp(nm,PEM_STRING_X509_OLD) && | |
213 | !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1; | |
214 | ||
3142c86d DSH |
215 | /* Some CAs use PKCS#7 with CERTIFICATE headers */ |
216 | if(!strcmp(nm, PEM_STRING_X509) && | |
217 | !strcmp(name, PEM_STRING_PKCS7)) return 1; | |
218 | ||
ce1b4fe1 DSH |
219 | return 0; |
220 | } | |
221 | ||
1241126a | 222 | int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp, |
74678cc2 | 223 | pem_password_cb *cb, void *u) |
d02b48c6 RE |
224 | { |
225 | EVP_CIPHER_INFO cipher; | |
226 | char *nm=NULL,*header=NULL; | |
1241126a | 227 | unsigned char *data=NULL; |
d02b48c6 | 228 | long len; |
1241126a | 229 | int ret = 0; |
d02b48c6 RE |
230 | |
231 | for (;;) | |
232 | { | |
f769ce3e DSH |
233 | if (!PEM_read_bio(bp,&nm,&header,&data,&len)) { |
234 | if(ERR_GET_REASON(ERR_peek_error()) == | |
235 | PEM_R_NO_START_LINE) | |
236 | ERR_add_error_data(2, "Expecting: ", name); | |
1241126a | 237 | return 0; |
f769ce3e | 238 | } |
ce1b4fe1 | 239 | if(check_pem(nm, name)) break; |
26a3a48d RL |
240 | OPENSSL_free(nm); |
241 | OPENSSL_free(header); | |
242 | OPENSSL_free(data); | |
d02b48c6 RE |
243 | } |
244 | if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err; | |
74678cc2 | 245 | if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err; |
1241126a DSH |
246 | |
247 | *pdata = data; | |
248 | *plen = len; | |
249 | ||
250 | if (pnm) | |
251 | *pnm = nm; | |
252 | ||
253 | ret = 1; | |
254 | ||
d02b48c6 | 255 | err: |
40efa672 | 256 | if (!ret || !pnm) OPENSSL_free(nm); |
26a3a48d | 257 | OPENSSL_free(header); |
1241126a DSH |
258 | if (!ret) OPENSSL_free(data); |
259 | return ret; | |
d02b48c6 RE |
260 | } |
261 | ||
cf1b7d96 | 262 | #ifndef OPENSSL_NO_FP_API |
8bb826ee | 263 | int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp, |
41a15c4f BL |
264 | char *x, const EVP_CIPHER *enc, unsigned char *kstr, |
265 | int klen, pem_password_cb *callback, void *u) | |
d02b48c6 RE |
266 | { |
267 | BIO *b; | |
268 | int ret; | |
269 | ||
270 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
271 | { | |
272 | PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB); | |
273 | return(0); | |
274 | } | |
275 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
74678cc2 | 276 | ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback,u); |
d02b48c6 RE |
277 | BIO_free(b); |
278 | return(ret); | |
279 | } | |
280 | #endif | |
281 | ||
8bb826ee | 282 | int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp, |
41a15c4f BL |
283 | char *x, const EVP_CIPHER *enc, unsigned char *kstr, |
284 | int klen, pem_password_cb *callback, void *u) | |
d02b48c6 RE |
285 | { |
286 | EVP_CIPHER_CTX ctx; | |
287 | int dsize=0,i,j,ret=0; | |
288 | unsigned char *p,*data=NULL; | |
e778802f | 289 | const char *objstr=NULL; |
d02b48c6 RE |
290 | char buf[PEM_BUFSIZE]; |
291 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
292 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
293 | ||
294 | if (enc != NULL) | |
295 | { | |
296 | objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc)); | |
297 | if (objstr == NULL) | |
298 | { | |
299 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); | |
300 | goto err; | |
301 | } | |
302 | } | |
303 | ||
58964a49 RE |
304 | if ((dsize=i2d(x,NULL)) < 0) |
305 | { | |
a0e7c8ee | 306 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_ASN1_LIB); |
58964a49 RE |
307 | dsize=0; |
308 | goto err; | |
309 | } | |
d02b48c6 | 310 | /* dzise + 8 bytes are needed */ |
17ed6c06 | 311 | /* actually it needs the cipher block size extra... */ |
26a3a48d | 312 | data=(unsigned char *)OPENSSL_malloc((unsigned int)dsize+20); |
d02b48c6 RE |
313 | if (data == NULL) |
314 | { | |
315 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
316 | goto err; | |
317 | } | |
318 | p=data; | |
319 | i=i2d(x,&p); | |
320 | ||
321 | if (enc != NULL) | |
322 | { | |
323 | if (kstr == NULL) | |
324 | { | |
325 | if (callback == NULL) | |
1241126a | 326 | klen=PEM_def_callback(buf,PEM_BUFSIZE,1,u); |
d02b48c6 | 327 | else |
74678cc2 | 328 | klen=(*callback)(buf,PEM_BUFSIZE,1,u); |
d02b48c6 RE |
329 | if (klen <= 0) |
330 | { | |
331 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY); | |
332 | goto err; | |
333 | } | |
a53955d8 UM |
334 | #ifdef CHARSET_EBCDIC |
335 | /* Convert the pass phrase from EBCDIC */ | |
336 | ebcdic2ascii(buf, buf, klen); | |
337 | #endif | |
d02b48c6 RE |
338 | kstr=(unsigned char *)buf; |
339 | } | |
eb952088 | 340 | RAND_add(data,i,0);/* put in the RSA key. */ |
27545970 | 341 | OPENSSL_assert(enc->iv_len <= (int)sizeof(iv)); |
915c6a21 | 342 | if (RAND_pseudo_bytes(iv,enc->iv_len) < 0) /* Generate a salt */ |
e7f97e2d | 343 | goto err; |
d02b48c6 RE |
344 | /* The 'iv' is used as the iv and as a salt. It is |
345 | * NOT taken from the BytesToKey function */ | |
346 | EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL); | |
347 | ||
43d60164 | 348 | if (kstr == (unsigned char *)buf) OPENSSL_cleanse(buf,PEM_BUFSIZE); |
d02b48c6 | 349 | |
54a656ef BL |
350 | OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf); |
351 | ||
d02b48c6 RE |
352 | buf[0]='\0'; |
353 | PEM_proc_type(buf,PEM_TYPE_ENCRYPTED); | |
915c6a21 | 354 | PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv); |
d02b48c6 | 355 | /* k=strlen(buf); */ |
cecd2638 DSH |
356 | |
357 | EVP_CIPHER_CTX_init(&ctx); | |
581f1c84 | 358 | EVP_EncryptInit_ex(&ctx,enc,NULL,key,iv); |
d02b48c6 | 359 | EVP_EncryptUpdate(&ctx,data,&j,data,i); |
581f1c84 | 360 | EVP_EncryptFinal_ex(&ctx,&(data[j]),&i); |
cecd2638 | 361 | EVP_CIPHER_CTX_cleanup(&ctx); |
d02b48c6 RE |
362 | i+=j; |
363 | ret=1; | |
364 | } | |
365 | else | |
366 | { | |
367 | ret=1; | |
368 | buf[0]='\0'; | |
369 | } | |
370 | i=PEM_write_bio(bp,name,buf,data,i); | |
371 | if (i <= 0) ret=0; | |
372 | err: | |
4579924b RL |
373 | OPENSSL_cleanse(key,sizeof(key)); |
374 | OPENSSL_cleanse(iv,sizeof(iv)); | |
375 | OPENSSL_cleanse((char *)&ctx,sizeof(ctx)); | |
376 | OPENSSL_cleanse(buf,PEM_BUFSIZE); | |
6ff7c958 BM |
377 | if (data != NULL) |
378 | { | |
4579924b | 379 | OPENSSL_cleanse(data,(unsigned int)dsize); |
6ff7c958 BM |
380 | OPENSSL_free(data); |
381 | } | |
d02b48c6 RE |
382 | return(ret); |
383 | } | |
384 | ||
6b691a5c | 385 | int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen, |
74678cc2 | 386 | pem_password_cb *callback,void *u) |
d02b48c6 RE |
387 | { |
388 | int i,j,o,klen; | |
389 | long len; | |
390 | EVP_CIPHER_CTX ctx; | |
391 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
392 | char buf[PEM_BUFSIZE]; | |
393 | ||
394 | len= *plen; | |
395 | ||
396 | if (cipher->cipher == NULL) return(1); | |
397 | if (callback == NULL) | |
1241126a | 398 | klen=PEM_def_callback(buf,PEM_BUFSIZE,0,u); |
d02b48c6 | 399 | else |
74678cc2 | 400 | klen=callback(buf,PEM_BUFSIZE,0,u); |
d02b48c6 RE |
401 | if (klen <= 0) |
402 | { | |
403 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ); | |
404 | return(0); | |
405 | } | |
a53955d8 UM |
406 | #ifdef CHARSET_EBCDIC |
407 | /* Convert the pass phrase from EBCDIC */ | |
408 | ebcdic2ascii(buf, buf, klen); | |
409 | #endif | |
410 | ||
d02b48c6 RE |
411 | EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]), |
412 | (unsigned char *)buf,klen,1,key,NULL); | |
413 | ||
414 | j=(int)len; | |
cecd2638 | 415 | EVP_CIPHER_CTX_init(&ctx); |
581f1c84 | 416 | EVP_DecryptInit_ex(&ctx,cipher->cipher,NULL, key,&(cipher->iv[0])); |
d02b48c6 | 417 | EVP_DecryptUpdate(&ctx,data,&i,data,j); |
581f1c84 | 418 | o=EVP_DecryptFinal_ex(&ctx,&(data[i]),&j); |
d02b48c6 | 419 | EVP_CIPHER_CTX_cleanup(&ctx); |
4579924b RL |
420 | OPENSSL_cleanse((char *)buf,sizeof(buf)); |
421 | OPENSSL_cleanse((char *)key,sizeof(key)); | |
d02b48c6 RE |
422 | j+=i; |
423 | if (!o) | |
424 | { | |
425 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT); | |
426 | return(0); | |
427 | } | |
428 | *plen=j; | |
429 | return(1); | |
430 | } | |
431 | ||
6b691a5c | 432 | int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher) |
d02b48c6 RE |
433 | { |
434 | int o; | |
e778802f | 435 | const EVP_CIPHER *enc=NULL; |
d02b48c6 | 436 | char *p,c; |
a229e303 | 437 | char **header_pp = &header; |
d02b48c6 RE |
438 | |
439 | cipher->cipher=NULL; | |
440 | if ((header == NULL) || (*header == '\0') || (*header == '\n')) | |
441 | return(1); | |
442 | if (strncmp(header,"Proc-Type: ",11) != 0) | |
443 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); } | |
444 | header+=11; | |
445 | if (*header != '4') return(0); header++; | |
446 | if (*header != ',') return(0); header++; | |
447 | if (strncmp(header,"ENCRYPTED",9) != 0) | |
448 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); } | |
449 | for (; (*header != '\n') && (*header != '\0'); header++) | |
450 | ; | |
451 | if (*header == '\0') | |
452 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); } | |
453 | header++; | |
454 | if (strncmp(header,"DEK-Info: ",10) != 0) | |
455 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); } | |
456 | header+=10; | |
457 | ||
458 | p=header; | |
459 | for (;;) | |
460 | { | |
461 | c= *header; | |
a53955d8 | 462 | #ifndef CHARSET_EBCDIC |
d02b48c6 RE |
463 | if (!( ((c >= 'A') && (c <= 'Z')) || (c == '-') || |
464 | ((c >= '0') && (c <= '9')))) | |
465 | break; | |
a53955d8 UM |
466 | #else |
467 | if (!( isupper(c) || (c == '-') || | |
468 | isdigit(c))) | |
469 | break; | |
470 | #endif | |
d02b48c6 RE |
471 | header++; |
472 | } | |
473 | *header='\0'; | |
474 | o=OBJ_sn2nid(p); | |
475 | cipher->cipher=enc=EVP_get_cipherbyname(p); | |
476 | *header=c; | |
477 | header++; | |
478 | ||
479 | if (enc == NULL) | |
480 | { | |
481 | PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION); | |
482 | return(0); | |
483 | } | |
8c3c5701 | 484 | if (!load_iv(header_pp,&(cipher->iv[0]),enc->iv_len)) |
a229e303 | 485 | return(0); |
d02b48c6 RE |
486 | |
487 | return(1); | |
488 | } | |
489 | ||
8c3c5701 | 490 | static int load_iv(char **fromp, unsigned char *to, int num) |
d02b48c6 RE |
491 | { |
492 | int v,i; | |
8c3c5701 | 493 | char *from; |
d02b48c6 RE |
494 | |
495 | from= *fromp; | |
496 | for (i=0; i<num; i++) to[i]=0; | |
497 | num*=2; | |
498 | for (i=0; i<num; i++) | |
499 | { | |
500 | if ((*from >= '0') && (*from <= '9')) | |
501 | v= *from-'0'; | |
502 | else if ((*from >= 'A') && (*from <= 'F')) | |
503 | v= *from-'A'+10; | |
504 | else if ((*from >= 'a') && (*from <= 'f')) | |
505 | v= *from-'a'+10; | |
506 | else | |
507 | { | |
508 | PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS); | |
509 | return(0); | |
510 | } | |
511 | from++; | |
512 | to[i/2]|=v<<(long)((!(i&1))*4); | |
513 | } | |
514 | ||
515 | *fromp=from; | |
516 | return(1); | |
517 | } | |
518 | ||
cf1b7d96 | 519 | #ifndef OPENSSL_NO_FP_API |
6b691a5c UM |
520 | int PEM_write(FILE *fp, char *name, char *header, unsigned char *data, |
521 | long len) | |
d02b48c6 RE |
522 | { |
523 | BIO *b; | |
524 | int ret; | |
525 | ||
526 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
527 | { | |
528 | PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB); | |
529 | return(0); | |
530 | } | |
531 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
532 | ret=PEM_write_bio(b, name, header, data,len); | |
533 | BIO_free(b); | |
534 | return(ret); | |
535 | } | |
536 | #endif | |
537 | ||
6b691a5c UM |
538 | int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data, |
539 | long len) | |
d02b48c6 RE |
540 | { |
541 | int nlen,n,i,j,outl; | |
216ad9ef | 542 | unsigned char *buf = NULL; |
d02b48c6 RE |
543 | EVP_ENCODE_CTX ctx; |
544 | int reason=ERR_R_BUF_LIB; | |
545 | ||
546 | EVP_EncodeInit(&ctx); | |
547 | nlen=strlen(name); | |
548 | ||
549 | if ( (BIO_write(bp,"-----BEGIN ",11) != 11) || | |
550 | (BIO_write(bp,name,nlen) != nlen) || | |
551 | (BIO_write(bp,"-----\n",6) != 6)) | |
552 | goto err; | |
553 | ||
554 | i=strlen(header); | |
555 | if (i > 0) | |
556 | { | |
557 | if ( (BIO_write(bp,header,i) != i) || | |
558 | (BIO_write(bp,"\n",1) != 1)) | |
559 | goto err; | |
560 | } | |
561 | ||
216ad9ef | 562 | buf = OPENSSL_malloc(PEM_BUFSIZE*8); |
d02b48c6 RE |
563 | if (buf == NULL) |
564 | { | |
565 | reason=ERR_R_MALLOC_FAILURE; | |
566 | goto err; | |
567 | } | |
568 | ||
569 | i=j=0; | |
570 | while (len > 0) | |
571 | { | |
572 | n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len); | |
573 | EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n); | |
574 | if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl)) | |
575 | goto err; | |
576 | i+=outl; | |
577 | len-=n; | |
578 | j+=n; | |
579 | } | |
580 | EVP_EncodeFinal(&ctx,buf,&outl); | |
581 | if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err; | |
26a3a48d | 582 | OPENSSL_free(buf); |
216ad9ef | 583 | buf = NULL; |
d02b48c6 RE |
584 | if ( (BIO_write(bp,"-----END ",9) != 9) || |
585 | (BIO_write(bp,name,nlen) != nlen) || | |
586 | (BIO_write(bp,"-----\n",6) != 6)) | |
587 | goto err; | |
588 | return(i+outl); | |
589 | err: | |
216ad9ef DSH |
590 | if (buf) |
591 | OPENSSL_free(buf); | |
d02b48c6 RE |
592 | PEMerr(PEM_F_PEM_WRITE_BIO,reason); |
593 | return(0); | |
594 | } | |
595 | ||
cf1b7d96 | 596 | #ifndef OPENSSL_NO_FP_API |
6b691a5c UM |
597 | int PEM_read(FILE *fp, char **name, char **header, unsigned char **data, |
598 | long *len) | |
d02b48c6 RE |
599 | { |
600 | BIO *b; | |
601 | int ret; | |
602 | ||
603 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
604 | { | |
605 | PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB); | |
606 | return(0); | |
607 | } | |
608 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
609 | ret=PEM_read_bio(b, name, header, data,len); | |
610 | BIO_free(b); | |
611 | return(ret); | |
612 | } | |
613 | #endif | |
614 | ||
6b691a5c UM |
615 | int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data, |
616 | long *len) | |
d02b48c6 RE |
617 | { |
618 | EVP_ENCODE_CTX ctx; | |
619 | int end=0,i,k,bl=0,hl=0,nohead=0; | |
620 | char buf[256]; | |
621 | BUF_MEM *nameB; | |
622 | BUF_MEM *headerB; | |
623 | BUF_MEM *dataB,*tmpB; | |
624 | ||
625 | nameB=BUF_MEM_new(); | |
626 | headerB=BUF_MEM_new(); | |
627 | dataB=BUF_MEM_new(); | |
628 | if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) | |
629 | { | |
2b61034b BM |
630 | BUF_MEM_free(nameB); |
631 | BUF_MEM_free(headerB); | |
632 | BUF_MEM_free(dataB); | |
d02b48c6 RE |
633 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); |
634 | return(0); | |
635 | } | |
636 | ||
637 | buf[254]='\0'; | |
638 | for (;;) | |
639 | { | |
640 | i=BIO_gets(bp,buf,254); | |
641 | ||
642 | if (i <= 0) | |
643 | { | |
644 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE); | |
645 | goto err; | |
646 | } | |
647 | ||
648 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
649 | buf[++i]='\n'; buf[++i]='\0'; | |
650 | ||
651 | if (strncmp(buf,"-----BEGIN ",11) == 0) | |
652 | { | |
653 | i=strlen(&(buf[11])); | |
654 | ||
655 | if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0) | |
656 | continue; | |
657 | if (!BUF_MEM_grow(nameB,i+9)) | |
658 | { | |
659 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
660 | goto err; | |
661 | } | |
61f5b6f3 | 662 | memcpy(nameB->data,&(buf[11]),i-6); |
d02b48c6 RE |
663 | nameB->data[i-6]='\0'; |
664 | break; | |
665 | } | |
666 | } | |
667 | hl=0; | |
668 | if (!BUF_MEM_grow(headerB,256)) | |
669 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
670 | headerB->data[0]='\0'; | |
671 | for (;;) | |
672 | { | |
673 | i=BIO_gets(bp,buf,254); | |
674 | if (i <= 0) break; | |
675 | ||
676 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
677 | buf[++i]='\n'; buf[++i]='\0'; | |
678 | ||
679 | if (buf[0] == '\n') break; | |
680 | if (!BUF_MEM_grow(headerB,hl+i+9)) | |
681 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
682 | if (strncmp(buf,"-----END ",9) == 0) | |
683 | { | |
684 | nohead=1; | |
685 | break; | |
686 | } | |
61f5b6f3 | 687 | memcpy(&(headerB->data[hl]),buf,i); |
d02b48c6 RE |
688 | headerB->data[hl+i]='\0'; |
689 | hl+=i; | |
690 | } | |
691 | ||
692 | bl=0; | |
693 | if (!BUF_MEM_grow(dataB,1024)) | |
694 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
695 | dataB->data[0]='\0'; | |
696 | if (!nohead) | |
697 | { | |
698 | for (;;) | |
699 | { | |
700 | i=BIO_gets(bp,buf,254); | |
701 | if (i <= 0) break; | |
702 | ||
703 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
704 | buf[++i]='\n'; buf[++i]='\0'; | |
705 | ||
706 | if (i != 65) end=1; | |
707 | if (strncmp(buf,"-----END ",9) == 0) | |
708 | break; | |
709 | if (i > 65) break; | |
54a656ef | 710 | if (!BUF_MEM_grow_clean(dataB,i+bl+9)) |
d02b48c6 RE |
711 | { |
712 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
713 | goto err; | |
714 | } | |
61f5b6f3 | 715 | memcpy(&(dataB->data[bl]),buf,i); |
d02b48c6 RE |
716 | dataB->data[bl+i]='\0'; |
717 | bl+=i; | |
718 | if (end) | |
719 | { | |
720 | buf[0]='\0'; | |
721 | i=BIO_gets(bp,buf,254); | |
722 | if (i <= 0) break; | |
723 | ||
724 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
725 | buf[++i]='\n'; buf[++i]='\0'; | |
726 | ||
727 | break; | |
728 | } | |
729 | } | |
730 | } | |
731 | else | |
732 | { | |
733 | tmpB=headerB; | |
734 | headerB=dataB; | |
735 | dataB=tmpB; | |
736 | bl=hl; | |
737 | } | |
738 | i=strlen(nameB->data); | |
739 | if ( (strncmp(buf,"-----END ",9) != 0) || | |
61f5b6f3 | 740 | (strncmp(nameB->data,&(buf[9]),i) != 0) || |
d02b48c6 RE |
741 | (strncmp(&(buf[9+i]),"-----\n",6) != 0)) |
742 | { | |
743 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE); | |
744 | goto err; | |
745 | } | |
746 | ||
747 | EVP_DecodeInit(&ctx); | |
748 | i=EVP_DecodeUpdate(&ctx, | |
749 | (unsigned char *)dataB->data,&bl, | |
750 | (unsigned char *)dataB->data,bl); | |
751 | if (i < 0) | |
752 | { | |
753 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
754 | goto err; | |
755 | } | |
756 | i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k); | |
757 | if (i < 0) | |
758 | { | |
759 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
760 | goto err; | |
761 | } | |
762 | bl+=k; | |
763 | ||
764 | if (bl == 0) goto err; | |
765 | *name=nameB->data; | |
766 | *header=headerB->data; | |
767 | *data=(unsigned char *)dataB->data; | |
768 | *len=bl; | |
26a3a48d RL |
769 | OPENSSL_free(nameB); |
770 | OPENSSL_free(headerB); | |
771 | OPENSSL_free(dataB); | |
d02b48c6 RE |
772 | return(1); |
773 | err: | |
774 | BUF_MEM_free(nameB); | |
775 | BUF_MEM_free(headerB); | |
776 | BUF_MEM_free(dataB); | |
777 | return(0); | |
778 | } |