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Additional user data argument to pem_password_cb function type
[thirdparty/openssl.git] / crypto / pem / pem_lib.c
1 /* crypto/pem/pem_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 <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>
67 #include <openssl/pkcs12.h>
68 #ifndef NO_DES
69 #include <openssl/des.h>
70 #endif
71
72 const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT;
73
74 #define MIN_LENGTH 4
75
76 static int def_callback(char *buf, int num, int w, void *userdata);
77 static int load_iv(unsigned char **fromp,unsigned char *to, int num);
78
79 static int def_callback(char *buf, int num, int w, void *userdata)
80 {
81 #ifdef NO_FP_API
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;
88 const char *prompt;
89
90 prompt=EVP_get_pw_prompt();
91 if (prompt == NULL)
92 prompt="Enter PEM pass phrase:";
93
94 for (;;)
95 {
96 i=EVP_read_pw_string(buf,num,prompt,w);
97 if (i != 0)
98 {
99 PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
100 memset(buf,0,(unsigned int)num);
101 return(-1);
102 }
103 j=strlen(buf);
104 if (j < MIN_LENGTH)
105 {
106 fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH);
107 }
108 else
109 break;
110 }
111 return(j);
112 #endif
113 }
114
115 void PEM_proc_type(char *buf, int type)
116 {
117 const char *str;
118
119 if (type == PEM_TYPE_ENCRYPTED)
120 str="ENCRYPTED";
121 else if (type == PEM_TYPE_MIC_CLEAR)
122 str="MIC-CLEAR";
123 else if (type == PEM_TYPE_MIC_ONLY)
124 str="MIC-ONLY";
125 else
126 str="BAD-TYPE";
127
128 strcat(buf,"Proc-Type: 4,");
129 strcat(buf,str);
130 strcat(buf,"\n");
131 }
132
133 void PEM_dek_info(char *buf, const char *type, int len, char *str)
134 {
135 static unsigned char map[17]="0123456789ABCDEF";
136 long i;
137 int j;
138
139 strcat(buf,"DEK-Info: ");
140 strcat(buf,type);
141 strcat(buf,",");
142 j=strlen(buf);
143 for (i=0; i<len; i++)
144 {
145 buf[j+i*2] =map[(str[i]>>4)&0x0f];
146 buf[j+i*2+1]=map[(str[i] )&0x0f];
147 }
148 buf[j+i*2]='\n';
149 buf[j+i*2+1]='\0';
150 }
151
152 #ifndef NO_FP_API
153 char *PEM_ASN1_read(char *(*d2i)(), const char *name, FILE *fp, char **x,
154 pem_password_cb *cb, void *u)
155 {
156 BIO *b;
157 char *ret;
158
159 if ((b=BIO_new(BIO_s_file())) == NULL)
160 {
161 PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB);
162 return(0);
163 }
164 BIO_set_fp(b,fp,BIO_NOCLOSE);
165 ret=PEM_ASN1_read_bio(d2i,name,b,x,cb,u);
166 BIO_free(b);
167 return(ret);
168 }
169 #endif
170
171 char *PEM_ASN1_read_bio(char *(*d2i)(), const char *name, BIO *bp, char **x,
172 pem_password_cb *cb, void *u)
173 {
174 EVP_CIPHER_INFO cipher;
175 char *nm=NULL,*header=NULL;
176 unsigned char *p=NULL,*data=NULL;
177 long len;
178 char *ret=NULL;
179
180 for (;;)
181 {
182 if (!PEM_read_bio(bp,&nm,&header,&data,&len)) return(NULL);
183 if ( (strcmp(nm,name) == 0) ||
184 ((strcmp(nm,PEM_STRING_RSA) == 0) &&
185 (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
186 ((strcmp(nm,PEM_STRING_DSA) == 0) &&
187 (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
188 ((strcmp(nm,PEM_STRING_PKCS8) == 0) &&
189 (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
190 ((strcmp(nm,PEM_STRING_PKCS8INF) == 0) &&
191 (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
192 ((strcmp(nm,PEM_STRING_X509_OLD) == 0) &&
193 (strcmp(name,PEM_STRING_X509) == 0)) ||
194 ((strcmp(nm,PEM_STRING_X509_REQ_OLD) == 0) &&
195 (strcmp(name,PEM_STRING_X509_REQ) == 0))
196 )
197 break;
198 Free(nm);
199 Free(header);
200 Free(data);
201 }
202 if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err;
203 if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err;
204 p=data;
205 if (strcmp(name,PEM_STRING_EVP_PKEY) == 0) {
206 if (strcmp(nm,PEM_STRING_RSA) == 0)
207 ret=d2i(EVP_PKEY_RSA,x,&p,len);
208 else if (strcmp(nm,PEM_STRING_DSA) == 0)
209 ret=d2i(EVP_PKEY_DSA,x,&p,len);
210 else if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
211 PKCS8_PRIV_KEY_INFO *p8inf;
212 p8inf=d2i_PKCS8_PRIV_KEY_INFO(
213 (PKCS8_PRIV_KEY_INFO **) x, &p, len);
214 ret = (char *)EVP_PKCS82PKEY(p8inf);
215 PKCS8_PRIV_KEY_INFO_free(p8inf);
216 } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
217 PKCS8_PRIV_KEY_INFO *p8inf;
218 X509_SIG *p8;
219 int klen;
220 char psbuf[PEM_BUFSIZE];
221 p8 = d2i_X509_SIG((X509_SIG **)x, &p, len);
222 if(!p8) goto p8err;
223 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
224 else klen=def_callback(psbuf,PEM_BUFSIZE,0,u);
225 if (klen <= 0) {
226 PEMerr(PEM_F_PEM_ASN1_READ_BIO,
227 PEM_R_BAD_PASSWORD_READ);
228 goto err;
229 }
230 p8inf = M_PKCS8_decrypt(p8, psbuf, klen);
231 X509_SIG_free(p8);
232 if(!p8inf) goto p8err;
233 ret = (char *)EVP_PKCS82PKEY(p8inf);
234 PKCS8_PRIV_KEY_INFO_free(p8inf);
235 }
236 } else ret=d2i(x,&p,len);
237 p8err:
238 if (ret == NULL)
239 PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB);
240 err:
241 Free(nm);
242 Free(header);
243 Free(data);
244 return(ret);
245 }
246
247 #ifndef NO_FP_API
248 int PEM_ASN1_write(int (*i2d)(), const char *name, FILE *fp, char *x,
249 const EVP_CIPHER *enc, unsigned char *kstr, int klen,
250 pem_password_cb *callback, void *u)
251 {
252 BIO *b;
253 int ret;
254
255 if ((b=BIO_new(BIO_s_file())) == NULL)
256 {
257 PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB);
258 return(0);
259 }
260 BIO_set_fp(b,fp,BIO_NOCLOSE);
261 ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback,u);
262 BIO_free(b);
263 return(ret);
264 }
265 #endif
266
267 int PEM_ASN1_write_bio(int (*i2d)(), const char *name, BIO *bp, char *x,
268 const EVP_CIPHER *enc, unsigned char *kstr, int klen,
269 pem_password_cb *callback, void *u)
270 {
271 EVP_CIPHER_CTX ctx;
272 int dsize=0,i,j,ret=0;
273 unsigned char *p,*data=NULL;
274 const char *objstr=NULL;
275 char buf[PEM_BUFSIZE];
276 unsigned char key[EVP_MAX_KEY_LENGTH];
277 unsigned char iv[EVP_MAX_IV_LENGTH];
278
279 if (enc != NULL)
280 {
281 objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
282 if (objstr == NULL)
283 {
284 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
285 goto err;
286 }
287 }
288
289 if ((dsize=i2d(x,NULL)) < 0)
290 {
291 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
292 dsize=0;
293 goto err;
294 }
295 /* dzise + 8 bytes are needed */
296 data=(unsigned char *)Malloc((unsigned int)dsize+20);
297 if (data == NULL)
298 {
299 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
300 goto err;
301 }
302 p=data;
303 i=i2d(x,&p);
304
305 if (enc != NULL)
306 {
307 if (kstr == NULL)
308 {
309 if (callback == NULL)
310 klen=def_callback(buf,PEM_BUFSIZE,1,u);
311 else
312 klen=(*callback)(buf,PEM_BUFSIZE,1,u);
313 if (klen <= 0)
314 {
315 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY);
316 goto err;
317 }
318 #ifdef CHARSET_EBCDIC
319 /* Convert the pass phrase from EBCDIC */
320 ebcdic2ascii(buf, buf, klen);
321 #endif
322 kstr=(unsigned char *)buf;
323 }
324 RAND_seed(data,i);/* put in the RSA key. */
325 RAND_bytes(iv,8); /* Generate a salt */
326 /* The 'iv' is used as the iv and as a salt. It is
327 * NOT taken from the BytesToKey function */
328 EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL);
329
330 if (kstr == (unsigned char *)buf) memset(buf,0,PEM_BUFSIZE);
331
332 buf[0]='\0';
333 PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
334 PEM_dek_info(buf,objstr,8,(char *)iv);
335 /* k=strlen(buf); */
336
337 EVP_EncryptInit(&ctx,enc,key,iv);
338 EVP_EncryptUpdate(&ctx,data,&j,data,i);
339 EVP_EncryptFinal(&ctx,&(data[j]),&i);
340 i+=j;
341 ret=1;
342 }
343 else
344 {
345 ret=1;
346 buf[0]='\0';
347 }
348 i=PEM_write_bio(bp,name,buf,data,i);
349 if (i <= 0) ret=0;
350 err:
351 memset(key,0,sizeof(key));
352 memset(iv,0,sizeof(iv));
353 memset((char *)&ctx,0,sizeof(ctx));
354 memset(buf,0,PEM_BUFSIZE);
355 memset(data,0,(unsigned int)dsize);
356 Free(data);
357 return(ret);
358 }
359
360 int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
361 pem_password_cb *callback,void *u)
362 {
363 int i,j,o,klen;
364 long len;
365 EVP_CIPHER_CTX ctx;
366 unsigned char key[EVP_MAX_KEY_LENGTH];
367 char buf[PEM_BUFSIZE];
368
369 len= *plen;
370
371 if (cipher->cipher == NULL) return(1);
372 if (callback == NULL)
373 klen=def_callback(buf,PEM_BUFSIZE,0,u);
374 else
375 klen=callback(buf,PEM_BUFSIZE,0,u);
376 if (klen <= 0)
377 {
378 PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ);
379 return(0);
380 }
381 #ifdef CHARSET_EBCDIC
382 /* Convert the pass phrase from EBCDIC */
383 ebcdic2ascii(buf, buf, klen);
384 #endif
385
386 EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]),
387 (unsigned char *)buf,klen,1,key,NULL);
388
389 j=(int)len;
390 EVP_DecryptInit(&ctx,cipher->cipher,key,&(cipher->iv[0]));
391 EVP_DecryptUpdate(&ctx,data,&i,data,j);
392 o=EVP_DecryptFinal(&ctx,&(data[i]),&j);
393 EVP_CIPHER_CTX_cleanup(&ctx);
394 memset((char *)buf,0,sizeof(buf));
395 memset((char *)key,0,sizeof(key));
396 j+=i;
397 if (!o)
398 {
399 PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT);
400 return(0);
401 }
402 *plen=j;
403 return(1);
404 }
405
406 int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
407 {
408 int o;
409 const EVP_CIPHER *enc=NULL;
410 char *p,c;
411
412 cipher->cipher=NULL;
413 if ((header == NULL) || (*header == '\0') || (*header == '\n'))
414 return(1);
415 if (strncmp(header,"Proc-Type: ",11) != 0)
416 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); }
417 header+=11;
418 if (*header != '4') return(0); header++;
419 if (*header != ',') return(0); header++;
420 if (strncmp(header,"ENCRYPTED",9) != 0)
421 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); }
422 for (; (*header != '\n') && (*header != '\0'); header++)
423 ;
424 if (*header == '\0')
425 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); }
426 header++;
427 if (strncmp(header,"DEK-Info: ",10) != 0)
428 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); }
429 header+=10;
430
431 p=header;
432 for (;;)
433 {
434 c= *header;
435 #ifndef CHARSET_EBCDIC
436 if (!( ((c >= 'A') && (c <= 'Z')) || (c == '-') ||
437 ((c >= '0') && (c <= '9'))))
438 break;
439 #else
440 if (!( isupper(c) || (c == '-') ||
441 isdigit(c)))
442 break;
443 #endif
444 header++;
445 }
446 *header='\0';
447 o=OBJ_sn2nid(p);
448 cipher->cipher=enc=EVP_get_cipherbyname(p);
449 *header=c;
450 header++;
451
452 if (enc == NULL)
453 {
454 PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION);
455 return(0);
456 }
457 if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),8)) return(0);
458
459 return(1);
460 }
461
462 static int load_iv(unsigned char **fromp, unsigned char *to, int num)
463 {
464 int v,i;
465 unsigned char *from;
466
467 from= *fromp;
468 for (i=0; i<num; i++) to[i]=0;
469 num*=2;
470 for (i=0; i<num; i++)
471 {
472 if ((*from >= '0') && (*from <= '9'))
473 v= *from-'0';
474 else if ((*from >= 'A') && (*from <= 'F'))
475 v= *from-'A'+10;
476 else if ((*from >= 'a') && (*from <= 'f'))
477 v= *from-'a'+10;
478 else
479 {
480 PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS);
481 return(0);
482 }
483 from++;
484 to[i/2]|=v<<(long)((!(i&1))*4);
485 }
486
487 *fromp=from;
488 return(1);
489 }
490
491 #ifndef NO_FP_API
492 int PEM_write(FILE *fp, char *name, char *header, unsigned char *data,
493 long len)
494 {
495 BIO *b;
496 int ret;
497
498 if ((b=BIO_new(BIO_s_file())) == NULL)
499 {
500 PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB);
501 return(0);
502 }
503 BIO_set_fp(b,fp,BIO_NOCLOSE);
504 ret=PEM_write_bio(b, name, header, data,len);
505 BIO_free(b);
506 return(ret);
507 }
508 #endif
509
510 int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,
511 long len)
512 {
513 int nlen,n,i,j,outl;
514 unsigned char *buf;
515 EVP_ENCODE_CTX ctx;
516 int reason=ERR_R_BUF_LIB;
517
518 EVP_EncodeInit(&ctx);
519 nlen=strlen(name);
520
521 if ( (BIO_write(bp,"-----BEGIN ",11) != 11) ||
522 (BIO_write(bp,name,nlen) != nlen) ||
523 (BIO_write(bp,"-----\n",6) != 6))
524 goto err;
525
526 i=strlen(header);
527 if (i > 0)
528 {
529 if ( (BIO_write(bp,header,i) != i) ||
530 (BIO_write(bp,"\n",1) != 1))
531 goto err;
532 }
533
534 buf=(unsigned char *)Malloc(PEM_BUFSIZE*8);
535 if (buf == NULL)
536 {
537 reason=ERR_R_MALLOC_FAILURE;
538 goto err;
539 }
540
541 i=j=0;
542 while (len > 0)
543 {
544 n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len);
545 EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n);
546 if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl))
547 goto err;
548 i+=outl;
549 len-=n;
550 j+=n;
551 }
552 EVP_EncodeFinal(&ctx,buf,&outl);
553 if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;
554 Free(buf);
555 if ( (BIO_write(bp,"-----END ",9) != 9) ||
556 (BIO_write(bp,name,nlen) != nlen) ||
557 (BIO_write(bp,"-----\n",6) != 6))
558 goto err;
559 return(i+outl);
560 err:
561 PEMerr(PEM_F_PEM_WRITE_BIO,reason);
562 return(0);
563 }
564
565 #ifndef NO_FP_API
566 int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,
567 long *len)
568 {
569 BIO *b;
570 int ret;
571
572 if ((b=BIO_new(BIO_s_file())) == NULL)
573 {
574 PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB);
575 return(0);
576 }
577 BIO_set_fp(b,fp,BIO_NOCLOSE);
578 ret=PEM_read_bio(b, name, header, data,len);
579 BIO_free(b);
580 return(ret);
581 }
582 #endif
583
584 int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
585 long *len)
586 {
587 EVP_ENCODE_CTX ctx;
588 int end=0,i,k,bl=0,hl=0,nohead=0;
589 char buf[256];
590 BUF_MEM *nameB;
591 BUF_MEM *headerB;
592 BUF_MEM *dataB,*tmpB;
593
594 nameB=BUF_MEM_new();
595 headerB=BUF_MEM_new();
596 dataB=BUF_MEM_new();
597 if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL))
598 {
599 PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
600 return(0);
601 }
602
603 buf[254]='\0';
604 for (;;)
605 {
606 i=BIO_gets(bp,buf,254);
607
608 if (i <= 0)
609 {
610 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE);
611 goto err;
612 }
613
614 while ((i >= 0) && (buf[i] <= ' ')) i--;
615 buf[++i]='\n'; buf[++i]='\0';
616
617 if (strncmp(buf,"-----BEGIN ",11) == 0)
618 {
619 i=strlen(&(buf[11]));
620
621 if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0)
622 continue;
623 if (!BUF_MEM_grow(nameB,i+9))
624 {
625 PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
626 goto err;
627 }
628 memcpy(nameB->data,&(buf[11]),i-6);
629 nameB->data[i-6]='\0';
630 break;
631 }
632 }
633 hl=0;
634 if (!BUF_MEM_grow(headerB,256))
635 { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
636 headerB->data[0]='\0';
637 for (;;)
638 {
639 i=BIO_gets(bp,buf,254);
640 if (i <= 0) break;
641
642 while ((i >= 0) && (buf[i] <= ' ')) i--;
643 buf[++i]='\n'; buf[++i]='\0';
644
645 if (buf[0] == '\n') break;
646 if (!BUF_MEM_grow(headerB,hl+i+9))
647 { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
648 if (strncmp(buf,"-----END ",9) == 0)
649 {
650 nohead=1;
651 break;
652 }
653 memcpy(&(headerB->data[hl]),buf,i);
654 headerB->data[hl+i]='\0';
655 hl+=i;
656 }
657
658 bl=0;
659 if (!BUF_MEM_grow(dataB,1024))
660 { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
661 dataB->data[0]='\0';
662 if (!nohead)
663 {
664 for (;;)
665 {
666 i=BIO_gets(bp,buf,254);
667 if (i <= 0) break;
668
669 while ((i >= 0) && (buf[i] <= ' ')) i--;
670 buf[++i]='\n'; buf[++i]='\0';
671
672 if (i != 65) end=1;
673 if (strncmp(buf,"-----END ",9) == 0)
674 break;
675 if (i > 65) break;
676 if (!BUF_MEM_grow(dataB,i+bl+9))
677 {
678 PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
679 goto err;
680 }
681 memcpy(&(dataB->data[bl]),buf,i);
682 dataB->data[bl+i]='\0';
683 bl+=i;
684 if (end)
685 {
686 buf[0]='\0';
687 i=BIO_gets(bp,buf,254);
688 if (i <= 0) break;
689
690 while ((i >= 0) && (buf[i] <= ' ')) i--;
691 buf[++i]='\n'; buf[++i]='\0';
692
693 break;
694 }
695 }
696 }
697 else
698 {
699 tmpB=headerB;
700 headerB=dataB;
701 dataB=tmpB;
702 bl=hl;
703 }
704 i=strlen(nameB->data);
705 if ( (strncmp(buf,"-----END ",9) != 0) ||
706 (strncmp(nameB->data,&(buf[9]),i) != 0) ||
707 (strncmp(&(buf[9+i]),"-----\n",6) != 0))
708 {
709 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE);
710 goto err;
711 }
712
713 EVP_DecodeInit(&ctx);
714 i=EVP_DecodeUpdate(&ctx,
715 (unsigned char *)dataB->data,&bl,
716 (unsigned char *)dataB->data,bl);
717 if (i < 0)
718 {
719 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
720 goto err;
721 }
722 i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k);
723 if (i < 0)
724 {
725 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
726 goto err;
727 }
728 bl+=k;
729
730 if (bl == 0) goto err;
731 *name=nameB->data;
732 *header=headerB->data;
733 *data=(unsigned char *)dataB->data;
734 *len=bl;
735 Free(nameB);
736 Free(headerB);
737 Free(dataB);
738 return(1);
739 err:
740 BUF_MEM_free(nameB);
741 BUF_MEM_free(headerB);
742 BUF_MEM_free(dataB);
743 return(0);
744 }
745
746 /* This function writes a private key in PKCS#8 format: it is a "drop in"
747 * replacement for PEM_write_bio_PrivateKey(). As usual if 'enc' is NULL then
748 * it uses the unencrypted private key form. It uses PKCS#5 v2.0 password based
749 * encryption algorithms.
750 */
751
752 int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
753 char *kstr, int klen,
754 pem_password_cb *cb, void *u)
755 {
756 X509_SIG *p8;
757 PKCS8_PRIV_KEY_INFO *p8inf;
758 char buf[PEM_BUFSIZE];
759 int ret;
760 if(!(p8inf = EVP_PKEY2PKCS8(x))) {
761 PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY,
762 PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
763 return 0;
764 }
765 if(enc) {
766 if(!kstr) {
767 if(!cb) klen = def_callback(buf, PEM_BUFSIZE, 1, u);
768 else klen = cb(buf, PEM_BUFSIZE, 1, u);
769 if(klen <= 0) {
770 PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY,
771 PEM_R_READ_KEY);
772 PKCS8_PRIV_KEY_INFO_free(p8inf);
773 return 0;
774 }
775
776 kstr = buf;
777 }
778 p8 = PKCS8_encrypt(-1, enc, kstr, klen, NULL, 0, 0, p8inf);
779 if(kstr == buf) memset(buf, 0, klen);
780 PKCS8_PRIV_KEY_INFO_free(p8inf);
781 ret = PEM_write_bio_PKCS8(bp, p8);
782 X509_SIG_free(p8);
783 return ret;
784 } else {
785 ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
786 PKCS8_PRIV_KEY_INFO_free(p8inf);
787 return ret;
788 }
789 }
790
791 int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
792 char *kstr, int klen, pem_password_cb *cb, void *u)
793 {
794 BIO *bp;
795 int ret;
796 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
797 PEMerr(PEM_F_PEM_F_PEM_WRITE_PKCS8PRIVATEKEY,ERR_R_BUF_LIB);
798 return(0);
799 }
800 ret = PEM_write_bio_PKCS8PrivateKey(bp, x, enc, kstr, klen, cb, u);
801 BIO_free(bp);
802 return ret;
803 }
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