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authorcvs2svn <admin@example.com>2000-04-30 04:58:23 +0000
committercvs2svn <admin@example.com>2000-04-30 04:58:23 +0000
commit9cc1eacd8366faaa248a9aca9120fb7427c2a58e (patch)
tree9304b7a65ac1d9eeb42cdd518d69fd21eb2b47af /src/lib/libcrypto/pem/pem_lib.c
parente71289f71fad3f153975fd8fbf1f0f35dbda7f28 (diff)
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This commit was manufactured by cvs2git to create tag 'OPENBSD_2_7_BASE'.OPENBSD_2_7_BASE
Diffstat (limited to 'src/lib/libcrypto/pem/pem_lib.c')
-rw-r--r--src/lib/libcrypto/pem/pem_lib.c963
1 files changed, 0 insertions, 963 deletions
diff --git a/src/lib/libcrypto/pem/pem_lib.c b/src/lib/libcrypto/pem/pem_lib.c
deleted file mode 100644
index b5e0a650f8..0000000000
--- a/src/lib/libcrypto/pem/pem_lib.c
+++ /dev/null
@@ -1,963 +0,0 @@
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
72const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT;
73
74#define MIN_LENGTH 4
75
76static int def_callback(char *buf, int num, int w, void *userdata);
77static int load_iv(unsigned char **fromp,unsigned char *to, int num);
78static int check_pem(const char *nm, const char *name);
79static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
80 int nid, const EVP_CIPHER *enc,
81 char *kstr, int klen,
82 pem_password_cb *cb, void *u);
83static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
84 int nid, const EVP_CIPHER *enc,
85 char *kstr, int klen,
86 pem_password_cb *cb, void *u);
87
88static int def_callback(char *buf, int num, int w, void *key)
89 {
90#ifdef NO_FP_API
91 /* We should not ever call the default callback routine from
92 * windows. */
93 PEMerr(PEM_F_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
94 return(-1);
95#else
96 int i,j;
97 const char *prompt;
98 if(key) {
99 i=strlen(key);
100 i=(i > num)?num:i;
101 memcpy(buf,key,i);
102 return(i);
103 }
104
105 prompt=EVP_get_pw_prompt();
106 if (prompt == NULL)
107 prompt="Enter PEM pass phrase:";
108
109 for (;;)
110 {
111 i=EVP_read_pw_string(buf,num,prompt,w);
112 if (i != 0)
113 {
114 PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
115 memset(buf,0,(unsigned int)num);
116 return(-1);
117 }
118 j=strlen(buf);
119 if (j < MIN_LENGTH)
120 {
121 fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH);
122 }
123 else
124 break;
125 }
126 return(j);
127#endif
128 }
129
130void PEM_proc_type(char *buf, int type)
131 {
132 const char *str;
133
134 if (type == PEM_TYPE_ENCRYPTED)
135 str="ENCRYPTED";
136 else if (type == PEM_TYPE_MIC_CLEAR)
137 str="MIC-CLEAR";
138 else if (type == PEM_TYPE_MIC_ONLY)
139 str="MIC-ONLY";
140 else
141 str="BAD-TYPE";
142
143 strcat(buf,"Proc-Type: 4,");
144 strcat(buf,str);
145 strcat(buf,"\n");
146 }
147
148void PEM_dek_info(char *buf, const char *type, int len, char *str)
149 {
150 static unsigned char map[17]="0123456789ABCDEF";
151 long i;
152 int j;
153
154 strcat(buf,"DEK-Info: ");
155 strcat(buf,type);
156 strcat(buf,",");
157 j=strlen(buf);
158 for (i=0; i<len; i++)
159 {
160 buf[j+i*2] =map[(str[i]>>4)&0x0f];
161 buf[j+i*2+1]=map[(str[i] )&0x0f];
162 }
163 buf[j+i*2]='\n';
164 buf[j+i*2+1]='\0';
165 }
166
167#ifndef NO_FP_API
168char *PEM_ASN1_read(char *(*d2i)(), const char *name, FILE *fp, char **x,
169 pem_password_cb *cb, void *u)
170 {
171 BIO *b;
172 char *ret;
173
174 if ((b=BIO_new(BIO_s_file())) == NULL)
175 {
176 PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB);
177 return(0);
178 }
179 BIO_set_fp(b,fp,BIO_NOCLOSE);
180 ret=PEM_ASN1_read_bio(d2i,name,b,x,cb,u);
181 BIO_free(b);
182 return(ret);
183 }
184#endif
185
186static int check_pem(const char *nm, const char *name)
187{
188 /* Normal matching nm and name */
189 if (!strcmp(nm,name)) return 1;
190
191 /* Make PEM_STRING_EVP_PKEY match any private key */
192
193 if(!strcmp(nm,PEM_STRING_PKCS8) &&
194 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
195
196 if(!strcmp(nm,PEM_STRING_PKCS8INF) &&
197 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
198
199 if(!strcmp(nm,PEM_STRING_RSA) &&
200 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
201
202 if(!strcmp(nm,PEM_STRING_DSA) &&
203 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
204
205 /* Permit older strings */
206
207 if(!strcmp(nm,PEM_STRING_X509_OLD) &&
208 !strcmp(name,PEM_STRING_X509)) return 1;
209
210 if(!strcmp(nm,PEM_STRING_X509_REQ_OLD) &&
211 !strcmp(name,PEM_STRING_X509_REQ)) return 1;
212
213 /* Allow normal certs to be read as trusted certs */
214 if(!strcmp(nm,PEM_STRING_X509) &&
215 !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;
216
217 if(!strcmp(nm,PEM_STRING_X509_OLD) &&
218 !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;
219
220 /* Some CAs use PKCS#7 with CERTIFICATE headers */
221 if(!strcmp(nm, PEM_STRING_X509) &&
222 !strcmp(name, PEM_STRING_PKCS7)) return 1;
223
224 return 0;
225}
226
227char *PEM_ASN1_read_bio(char *(*d2i)(), const char *name, BIO *bp, char **x,
228 pem_password_cb *cb, void *u)
229 {
230 EVP_CIPHER_INFO cipher;
231 char *nm=NULL,*header=NULL;
232 unsigned char *p=NULL,*data=NULL;
233 long len;
234 char *ret=NULL;
235
236 for (;;)
237 {
238 if (!PEM_read_bio(bp,&nm,&header,&data,&len)) {
239 if(ERR_GET_REASON(ERR_peek_error()) ==
240 PEM_R_NO_START_LINE)
241 ERR_add_error_data(2, "Expecting: ", name);
242 return(NULL);
243 }
244 if(check_pem(nm, name)) break;
245 Free(nm);
246 Free(header);
247 Free(data);
248 }
249 if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err;
250 if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err;
251 p=data;
252 if (strcmp(name,PEM_STRING_EVP_PKEY) == 0) {
253 if (strcmp(nm,PEM_STRING_RSA) == 0)
254 ret=d2i(EVP_PKEY_RSA,x,&p,len);
255 else if (strcmp(nm,PEM_STRING_DSA) == 0)
256 ret=d2i(EVP_PKEY_DSA,x,&p,len);
257 else if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
258 PKCS8_PRIV_KEY_INFO *p8inf;
259 p8inf=d2i_PKCS8_PRIV_KEY_INFO(
260 (PKCS8_PRIV_KEY_INFO **) x, &p, len);
261 ret = (char *)EVP_PKCS82PKEY(p8inf);
262 PKCS8_PRIV_KEY_INFO_free(p8inf);
263 } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
264 PKCS8_PRIV_KEY_INFO *p8inf;
265 X509_SIG *p8;
266 int klen;
267 char psbuf[PEM_BUFSIZE];
268 p8 = d2i_X509_SIG(NULL, &p, len);
269 if(!p8) goto p8err;
270 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
271 else klen=def_callback(psbuf,PEM_BUFSIZE,0,u);
272 if (klen <= 0) {
273 PEMerr(PEM_F_PEM_ASN1_READ_BIO,
274 PEM_R_BAD_PASSWORD_READ);
275 goto err;
276 }
277 p8inf = M_PKCS8_decrypt(p8, psbuf, klen);
278 X509_SIG_free(p8);
279 if(!p8inf) goto p8err;
280 ret = (char *)EVP_PKCS82PKEY(p8inf);
281 if(x) {
282 if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
283 *x = ret;
284 }
285 PKCS8_PRIV_KEY_INFO_free(p8inf);
286 }
287 } else ret=d2i(x,&p,len);
288p8err:
289 if (ret == NULL)
290 PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB);
291err:
292 Free(nm);
293 Free(header);
294 Free(data);
295 return(ret);
296 }
297
298#ifndef NO_FP_API
299int PEM_ASN1_write(int (*i2d)(), const char *name, FILE *fp, char *x,
300 const EVP_CIPHER *enc, unsigned char *kstr, int klen,
301 pem_password_cb *callback, void *u)
302 {
303 BIO *b;
304 int ret;
305
306 if ((b=BIO_new(BIO_s_file())) == NULL)
307 {
308 PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB);
309 return(0);
310 }
311 BIO_set_fp(b,fp,BIO_NOCLOSE);
312 ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback,u);
313 BIO_free(b);
314 return(ret);
315 }
316#endif
317
318int PEM_ASN1_write_bio(int (*i2d)(), const char *name, BIO *bp, char *x,
319 const EVP_CIPHER *enc, unsigned char *kstr, int klen,
320 pem_password_cb *callback, void *u)
321 {
322 EVP_CIPHER_CTX ctx;
323 int dsize=0,i,j,ret=0;
324 unsigned char *p,*data=NULL;
325 const char *objstr=NULL;
326 char buf[PEM_BUFSIZE];
327 unsigned char key[EVP_MAX_KEY_LENGTH];
328 unsigned char iv[EVP_MAX_IV_LENGTH];
329
330 if (enc != NULL)
331 {
332 objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
333 if (objstr == NULL)
334 {
335 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
336 goto err;
337 }
338 }
339
340 if ((dsize=i2d(x,NULL)) < 0)
341 {
342 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
343 dsize=0;
344 goto err;
345 }
346 /* dzise + 8 bytes are needed */
347 data=(unsigned char *)Malloc((unsigned int)dsize+20);
348 if (data == NULL)
349 {
350 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
351 goto err;
352 }
353 p=data;
354 i=i2d(x,&p);
355
356 if (enc != NULL)
357 {
358 if (kstr == NULL)
359 {
360 if (callback == NULL)
361 klen=def_callback(buf,PEM_BUFSIZE,1,u);
362 else
363 klen=(*callback)(buf,PEM_BUFSIZE,1,u);
364 if (klen <= 0)
365 {
366 PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY);
367 goto err;
368 }
369#ifdef CHARSET_EBCDIC
370 /* Convert the pass phrase from EBCDIC */
371 ebcdic2ascii(buf, buf, klen);
372#endif
373 kstr=(unsigned char *)buf;
374 }
375 RAND_add(data,i,0);/* put in the RSA key. */
376 if (RAND_pseudo_bytes(iv,8) < 0) /* Generate a salt */
377 goto err;
378 /* The 'iv' is used as the iv and as a salt. It is
379 * NOT taken from the BytesToKey function */
380 EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL);
381
382 if (kstr == (unsigned char *)buf) memset(buf,0,PEM_BUFSIZE);
383
384 buf[0]='\0';
385 PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
386 PEM_dek_info(buf,objstr,8,(char *)iv);
387 /* k=strlen(buf); */
388
389 EVP_EncryptInit(&ctx,enc,key,iv);
390 EVP_EncryptUpdate(&ctx,data,&j,data,i);
391 EVP_EncryptFinal(&ctx,&(data[j]),&i);
392 i+=j;
393 ret=1;
394 }
395 else
396 {
397 ret=1;
398 buf[0]='\0';
399 }
400 i=PEM_write_bio(bp,name,buf,data,i);
401 if (i <= 0) ret=0;
402err:
403 memset(key,0,sizeof(key));
404 memset(iv,0,sizeof(iv));
405 memset((char *)&ctx,0,sizeof(ctx));
406 memset(buf,0,PEM_BUFSIZE);
407 memset(data,0,(unsigned int)dsize);
408 Free(data);
409 return(ret);
410 }
411
412int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
413 pem_password_cb *callback,void *u)
414 {
415 int i,j,o,klen;
416 long len;
417 EVP_CIPHER_CTX ctx;
418 unsigned char key[EVP_MAX_KEY_LENGTH];
419 char buf[PEM_BUFSIZE];
420
421 len= *plen;
422
423 if (cipher->cipher == NULL) return(1);
424 if (callback == NULL)
425 klen=def_callback(buf,PEM_BUFSIZE,0,u);
426 else
427 klen=callback(buf,PEM_BUFSIZE,0,u);
428 if (klen <= 0)
429 {
430 PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ);
431 return(0);
432 }
433#ifdef CHARSET_EBCDIC
434 /* Convert the pass phrase from EBCDIC */
435 ebcdic2ascii(buf, buf, klen);
436#endif
437
438 EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]),
439 (unsigned char *)buf,klen,1,key,NULL);
440
441 j=(int)len;
442 EVP_DecryptInit(&ctx,cipher->cipher,key,&(cipher->iv[0]));
443 EVP_DecryptUpdate(&ctx,data,&i,data,j);
444 o=EVP_DecryptFinal(&ctx,&(data[i]),&j);
445 EVP_CIPHER_CTX_cleanup(&ctx);
446 memset((char *)buf,0,sizeof(buf));
447 memset((char *)key,0,sizeof(key));
448 j+=i;
449 if (!o)
450 {
451 PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT);
452 return(0);
453 }
454 *plen=j;
455 return(1);
456 }
457
458int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
459 {
460 int o;
461 const EVP_CIPHER *enc=NULL;
462 char *p,c;
463
464 cipher->cipher=NULL;
465 if ((header == NULL) || (*header == '\0') || (*header == '\n'))
466 return(1);
467 if (strncmp(header,"Proc-Type: ",11) != 0)
468 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); }
469 header+=11;
470 if (*header != '4') return(0); header++;
471 if (*header != ',') return(0); header++;
472 if (strncmp(header,"ENCRYPTED",9) != 0)
473 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); }
474 for (; (*header != '\n') && (*header != '\0'); header++)
475 ;
476 if (*header == '\0')
477 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); }
478 header++;
479 if (strncmp(header,"DEK-Info: ",10) != 0)
480 { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); }
481 header+=10;
482
483 p=header;
484 for (;;)
485 {
486 c= *header;
487#ifndef CHARSET_EBCDIC
488 if (!( ((c >= 'A') && (c <= 'Z')) || (c == '-') ||
489 ((c >= '0') && (c <= '9'))))
490 break;
491#else
492 if (!( isupper(c) || (c == '-') ||
493 isdigit(c)))
494 break;
495#endif
496 header++;
497 }
498 *header='\0';
499 o=OBJ_sn2nid(p);
500 cipher->cipher=enc=EVP_get_cipherbyname(p);
501 *header=c;
502 header++;
503
504 if (enc == NULL)
505 {
506 PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION);
507 return(0);
508 }
509 if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),8)) return(0);
510
511 return(1);
512 }
513
514static int load_iv(unsigned char **fromp, unsigned char *to, int num)
515 {
516 int v,i;
517 unsigned char *from;
518
519 from= *fromp;
520 for (i=0; i<num; i++) to[i]=0;
521 num*=2;
522 for (i=0; i<num; i++)
523 {
524 if ((*from >= '0') && (*from <= '9'))
525 v= *from-'0';
526 else if ((*from >= 'A') && (*from <= 'F'))
527 v= *from-'A'+10;
528 else if ((*from >= 'a') && (*from <= 'f'))
529 v= *from-'a'+10;
530 else
531 {
532 PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS);
533 return(0);
534 }
535 from++;
536 to[i/2]|=v<<(long)((!(i&1))*4);
537 }
538
539 *fromp=from;
540 return(1);
541 }
542
543#ifndef NO_FP_API
544int PEM_write(FILE *fp, char *name, char *header, unsigned char *data,
545 long len)
546 {
547 BIO *b;
548 int ret;
549
550 if ((b=BIO_new(BIO_s_file())) == NULL)
551 {
552 PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB);
553 return(0);
554 }
555 BIO_set_fp(b,fp,BIO_NOCLOSE);
556 ret=PEM_write_bio(b, name, header, data,len);
557 BIO_free(b);
558 return(ret);
559 }
560#endif
561
562int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,
563 long len)
564 {
565 int nlen,n,i,j,outl;
566 unsigned char *buf;
567 EVP_ENCODE_CTX ctx;
568 int reason=ERR_R_BUF_LIB;
569
570 EVP_EncodeInit(&ctx);
571 nlen=strlen(name);
572
573 if ( (BIO_write(bp,"-----BEGIN ",11) != 11) ||
574 (BIO_write(bp,name,nlen) != nlen) ||
575 (BIO_write(bp,"-----\n",6) != 6))
576 goto err;
577
578 i=strlen(header);
579 if (i > 0)
580 {
581 if ( (BIO_write(bp,header,i) != i) ||
582 (BIO_write(bp,"\n",1) != 1))
583 goto err;
584 }
585
586 buf=(unsigned char *)Malloc(PEM_BUFSIZE*8);
587 if (buf == NULL)
588 {
589 reason=ERR_R_MALLOC_FAILURE;
590 goto err;
591 }
592
593 i=j=0;
594 while (len > 0)
595 {
596 n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len);
597 EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n);
598 if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl))
599 goto err;
600 i+=outl;
601 len-=n;
602 j+=n;
603 }
604 EVP_EncodeFinal(&ctx,buf,&outl);
605 if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;
606 Free(buf);
607 if ( (BIO_write(bp,"-----END ",9) != 9) ||
608 (BIO_write(bp,name,nlen) != nlen) ||
609 (BIO_write(bp,"-----\n",6) != 6))
610 goto err;
611 return(i+outl);
612err:
613 PEMerr(PEM_F_PEM_WRITE_BIO,reason);
614 return(0);
615 }
616
617#ifndef NO_FP_API
618int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,
619 long *len)
620 {
621 BIO *b;
622 int ret;
623
624 if ((b=BIO_new(BIO_s_file())) == NULL)
625 {
626 PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB);
627 return(0);
628 }
629 BIO_set_fp(b,fp,BIO_NOCLOSE);
630 ret=PEM_read_bio(b, name, header, data,len);
631 BIO_free(b);
632 return(ret);
633 }
634#endif
635
636int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
637 long *len)
638 {
639 EVP_ENCODE_CTX ctx;
640 int end=0,i,k,bl=0,hl=0,nohead=0;
641 char buf[256];
642 BUF_MEM *nameB;
643 BUF_MEM *headerB;
644 BUF_MEM *dataB,*tmpB;
645
646 nameB=BUF_MEM_new();
647 headerB=BUF_MEM_new();
648 dataB=BUF_MEM_new();
649 if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL))
650 {
651 PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
652 return(0);
653 }
654
655 buf[254]='\0';
656 for (;;)
657 {
658 i=BIO_gets(bp,buf,254);
659
660 if (i <= 0)
661 {
662 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE);
663 goto err;
664 }
665
666 while ((i >= 0) && (buf[i] <= ' ')) i--;
667 buf[++i]='\n'; buf[++i]='\0';
668
669 if (strncmp(buf,"-----BEGIN ",11) == 0)
670 {
671 i=strlen(&(buf[11]));
672
673 if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0)
674 continue;
675 if (!BUF_MEM_grow(nameB,i+9))
676 {
677 PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
678 goto err;
679 }
680 memcpy(nameB->data,&(buf[11]),i-6);
681 nameB->data[i-6]='\0';
682 break;
683 }
684 }
685 hl=0;
686 if (!BUF_MEM_grow(headerB,256))
687 { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
688 headerB->data[0]='\0';
689 for (;;)
690 {
691 i=BIO_gets(bp,buf,254);
692 if (i <= 0) break;
693
694 while ((i >= 0) && (buf[i] <= ' ')) i--;
695 buf[++i]='\n'; buf[++i]='\0';
696
697 if (buf[0] == '\n') break;
698 if (!BUF_MEM_grow(headerB,hl+i+9))
699 { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
700 if (strncmp(buf,"-----END ",9) == 0)
701 {
702 nohead=1;
703 break;
704 }
705 memcpy(&(headerB->data[hl]),buf,i);
706 headerB->data[hl+i]='\0';
707 hl+=i;
708 }
709
710 bl=0;
711 if (!BUF_MEM_grow(dataB,1024))
712 { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
713 dataB->data[0]='\0';
714 if (!nohead)
715 {
716 for (;;)
717 {
718 i=BIO_gets(bp,buf,254);
719 if (i <= 0) break;
720
721 while ((i >= 0) && (buf[i] <= ' ')) i--;
722 buf[++i]='\n'; buf[++i]='\0';
723
724 if (i != 65) end=1;
725 if (strncmp(buf,"-----END ",9) == 0)
726 break;
727 if (i > 65) break;
728 if (!BUF_MEM_grow(dataB,i+bl+9))
729 {
730 PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
731 goto err;
732 }
733 memcpy(&(dataB->data[bl]),buf,i);
734 dataB->data[bl+i]='\0';
735 bl+=i;
736 if (end)
737 {
738 buf[0]='\0';
739 i=BIO_gets(bp,buf,254);
740 if (i <= 0) break;
741
742 while ((i >= 0) && (buf[i] <= ' ')) i--;
743 buf[++i]='\n'; buf[++i]='\0';
744
745 break;
746 }
747 }
748 }
749 else
750 {
751 tmpB=headerB;
752 headerB=dataB;
753 dataB=tmpB;
754 bl=hl;
755 }
756 i=strlen(nameB->data);
757 if ( (strncmp(buf,"-----END ",9) != 0) ||
758 (strncmp(nameB->data,&(buf[9]),i) != 0) ||
759 (strncmp(&(buf[9+i]),"-----\n",6) != 0))
760 {
761 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE);
762 goto err;
763 }
764
765 EVP_DecodeInit(&ctx);
766 i=EVP_DecodeUpdate(&ctx,
767 (unsigned char *)dataB->data,&bl,
768 (unsigned char *)dataB->data,bl);
769 if (i < 0)
770 {
771 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
772 goto err;
773 }
774 i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k);
775 if (i < 0)
776 {
777 PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
778 goto err;
779 }
780 bl+=k;
781
782 if (bl == 0) goto err;
783 *name=nameB->data;
784 *header=headerB->data;
785 *data=(unsigned char *)dataB->data;
786 *len=bl;
787 Free(nameB);
788 Free(headerB);
789 Free(dataB);
790 return(1);
791err:
792 BUF_MEM_free(nameB);
793 BUF_MEM_free(headerB);
794 BUF_MEM_free(dataB);
795 return(0);
796 }
797
798/* These functions write a private key in PKCS#8 format: it is a "drop in"
799 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
800 * is NULL then it uses the unencrypted private key form. The 'nid' versions
801 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
802 */
803
804int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
805 char *kstr, int klen,
806 pem_password_cb *cb, void *u)
807{
808 return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
809}
810
811int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
812 char *kstr, int klen,
813 pem_password_cb *cb, void *u)
814{
815 return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
816}
817
818int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
819 char *kstr, int klen,
820 pem_password_cb *cb, void *u)
821{
822 return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
823}
824
825int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
826 char *kstr, int klen,
827 pem_password_cb *cb, void *u)
828{
829 return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
830}
831
832static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
833 char *kstr, int klen,
834 pem_password_cb *cb, void *u)
835{
836 X509_SIG *p8;
837 PKCS8_PRIV_KEY_INFO *p8inf;
838 char buf[PEM_BUFSIZE];
839 int ret;
840 if(!(p8inf = EVP_PKEY2PKCS8(x))) {
841 PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY,
842 PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
843 return 0;
844 }
845 if(enc || (nid != -1)) {
846 if(!kstr) {
847 if(!cb) klen = def_callback(buf, PEM_BUFSIZE, 1, u);
848 else klen = cb(buf, PEM_BUFSIZE, 1, u);
849 if(klen <= 0) {
850 PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY,
851 PEM_R_READ_KEY);
852 PKCS8_PRIV_KEY_INFO_free(p8inf);
853 return 0;
854 }
855
856 kstr = buf;
857 }
858 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
859 if(kstr == buf) memset(buf, 0, klen);
860 PKCS8_PRIV_KEY_INFO_free(p8inf);
861 if(isder) ret = i2d_PKCS8_bio(bp, p8);
862 else ret = PEM_write_bio_PKCS8(bp, p8);
863 X509_SIG_free(p8);
864 return ret;
865 } else {
866 if(isder) ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
867 else ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
868 PKCS8_PRIV_KEY_INFO_free(p8inf);
869 return ret;
870 }
871}
872
873/* Finally the DER version to read PKCS#8 encrypted private keys. It has to be
874 * here to access the default callback.
875 */
876
877EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
878{
879 PKCS8_PRIV_KEY_INFO *p8inf = NULL;
880 X509_SIG *p8 = NULL;
881 int klen;
882 EVP_PKEY *ret;
883 char psbuf[PEM_BUFSIZE];
884 p8 = d2i_PKCS8_bio(bp, NULL);
885 if(!p8) return NULL;
886 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
887 else klen=def_callback(psbuf,PEM_BUFSIZE,0,u);
888 if (klen <= 0) {
889 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
890 X509_SIG_free(p8);
891 return NULL;
892 }
893 p8inf = M_PKCS8_decrypt(p8, psbuf, klen);
894 X509_SIG_free(p8);
895 if(!p8inf) return NULL;
896 ret = EVP_PKCS82PKEY(p8inf);
897 PKCS8_PRIV_KEY_INFO_free(p8inf);
898 if(!ret) return NULL;
899 if(x) {
900 if(*x) EVP_PKEY_free(*x);
901 *x = ret;
902 }
903 return ret;
904}
905
906#ifndef NO_FP_API
907
908int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
909 char *kstr, int klen,
910 pem_password_cb *cb, void *u)
911{
912 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
913}
914
915int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
916 char *kstr, int klen,
917 pem_password_cb *cb, void *u)
918{
919 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
920}
921
922int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
923 char *kstr, int klen,
924 pem_password_cb *cb, void *u)
925{
926 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
927}
928
929int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
930 char *kstr, int klen, pem_password_cb *cb, void *u)
931{
932 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
933}
934
935static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
936 char *kstr, int klen,
937 pem_password_cb *cb, void *u)
938{
939 BIO *bp;
940 int ret;
941 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
942 PEMerr(PEM_F_PEM_F_DO_PK8KEY_FP,ERR_R_BUF_LIB);
943 return(0);
944 }
945 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
946 BIO_free(bp);
947 return ret;
948}
949
950EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
951{
952 BIO *bp;
953 EVP_PKEY *ret;
954 if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
955 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP,ERR_R_BUF_LIB);
956 return NULL;
957 }
958 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
959 BIO_free(bp);
960 return ret;
961}
962
963#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-24 22:19:17 +0000