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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> | |
d82e2718 | 60 | #include <ctype.h> |
d02b48c6 | 61 | #include "cryptlib.h" |
ec577822 BM |
62 | #include <openssl/buffer.h> |
63 | #include <openssl/objects.h> | |
64 | #include <openssl/evp.h> | |
65 | #include <openssl/rand.h> | |
66 | #include <openssl/x509.h> | |
67 | #include <openssl/pem.h> | |
095ce353 | 68 | #include <openssl/pkcs12.h> |
cf1b7d96 | 69 | #ifndef OPENSSL_NO_DES |
ec577822 | 70 | #include <openssl/des.h> |
d02b48c6 RE |
71 | #endif |
72 | ||
e778802f | 73 | const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT; |
d02b48c6 RE |
74 | |
75 | #define MIN_LENGTH 4 | |
76 | ||
8c3c5701 | 77 | static int load_iv(char **fromp,unsigned char *to, int num); |
ce1b4fe1 | 78 | static int check_pem(const char *nm, const char *name); |
1241126a DSH |
79 | |
80 | int PEM_def_callback(char *buf, int num, int w, void *key) | |
d02b48c6 | 81 | { |
cf1b7d96 | 82 | #ifdef OPENSSL_NO_FP_API |
d02b48c6 RE |
83 | /* We should not ever call the default callback routine from |
84 | * windows. */ | |
8afca8d9 | 85 | PEMerr(PEM_F_PEM_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
d02b48c6 RE |
86 | return(-1); |
87 | #else | |
88 | int i,j; | |
e778802f | 89 | const char *prompt; |
a3fe382e DSH |
90 | if(key) { |
91 | i=strlen(key); | |
92 | i=(i > num)?num:i; | |
93 | memcpy(buf,key,i); | |
94 | return(i); | |
95 | } | |
d02b48c6 RE |
96 | |
97 | prompt=EVP_get_pw_prompt(); | |
98 | if (prompt == NULL) | |
99 | prompt="Enter PEM pass phrase:"; | |
100 | ||
101 | for (;;) | |
102 | { | |
103 | i=EVP_read_pw_string(buf,num,prompt,w); | |
104 | if (i != 0) | |
105 | { | |
8afca8d9 | 106 | PEMerr(PEM_F_PEM_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD); |
d02b48c6 RE |
107 | memset(buf,0,(unsigned int)num); |
108 | return(-1); | |
109 | } | |
110 | j=strlen(buf); | |
111 | if (j < MIN_LENGTH) | |
112 | { | |
113 | fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH); | |
114 | } | |
115 | else | |
116 | break; | |
117 | } | |
118 | return(j); | |
119 | #endif | |
120 | } | |
121 | ||
6b691a5c | 122 | void PEM_proc_type(char *buf, int type) |
d02b48c6 | 123 | { |
e778802f | 124 | const char *str; |
d02b48c6 RE |
125 | |
126 | if (type == PEM_TYPE_ENCRYPTED) | |
127 | str="ENCRYPTED"; | |
128 | else if (type == PEM_TYPE_MIC_CLEAR) | |
129 | str="MIC-CLEAR"; | |
130 | else if (type == PEM_TYPE_MIC_ONLY) | |
131 | str="MIC-ONLY"; | |
132 | else | |
133 | str="BAD-TYPE"; | |
134 | ||
d420ac2c RL |
135 | BUF_strlcat(buf,"Proc-Type: 4,",PEM_BUFSIZE); |
136 | BUF_strlcat(buf,str,PEM_BUFSIZE); | |
137 | BUF_strlcat(buf,"\n",PEM_BUFSIZE); | |
d02b48c6 RE |
138 | } |
139 | ||
6b691a5c | 140 | void PEM_dek_info(char *buf, const char *type, int len, char *str) |
d02b48c6 | 141 | { |
54a656ef | 142 | static const unsigned char map[17]="0123456789ABCDEF"; |
d02b48c6 RE |
143 | long i; |
144 | int j; | |
145 | ||
d420ac2c RL |
146 | BUF_strlcat(buf,"DEK-Info: ",PEM_BUFSIZE); |
147 | BUF_strlcat(buf,type,PEM_BUFSIZE); | |
148 | BUF_strlcat(buf,",",PEM_BUFSIZE); | |
d02b48c6 | 149 | j=strlen(buf); |
d420ac2c RL |
150 | if (j + (len * 2) + 1 > PEM_BUFSIZE) |
151 | return; | |
d02b48c6 RE |
152 | for (i=0; i<len; i++) |
153 | { | |
154 | buf[j+i*2] =map[(str[i]>>4)&0x0f]; | |
155 | buf[j+i*2+1]=map[(str[i] )&0x0f]; | |
156 | } | |
157 | buf[j+i*2]='\n'; | |
158 | buf[j+i*2+1]='\0'; | |
159 | } | |
160 | ||
cf1b7d96 | 161 | #ifndef OPENSSL_NO_FP_API |
8bb826ee BL |
162 | void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x, |
163 | pem_password_cb *cb, void *u) | |
d02b48c6 RE |
164 | { |
165 | BIO *b; | |
41a15c4f | 166 | void *ret; |
d02b48c6 RE |
167 | |
168 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
169 | { | |
170 | PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB); | |
171 | return(0); | |
172 | } | |
173 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
74678cc2 | 174 | ret=PEM_ASN1_read_bio(d2i,name,b,x,cb,u); |
d02b48c6 RE |
175 | BIO_free(b); |
176 | return(ret); | |
177 | } | |
178 | #endif | |
179 | ||
ce1b4fe1 DSH |
180 | static int check_pem(const char *nm, const char *name) |
181 | { | |
182 | /* Normal matching nm and name */ | |
183 | if (!strcmp(nm,name)) return 1; | |
184 | ||
185 | /* Make PEM_STRING_EVP_PKEY match any private key */ | |
186 | ||
187 | if(!strcmp(nm,PEM_STRING_PKCS8) && | |
188 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
189 | ||
190 | if(!strcmp(nm,PEM_STRING_PKCS8INF) && | |
191 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
192 | ||
193 | if(!strcmp(nm,PEM_STRING_RSA) && | |
194 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
195 | ||
196 | if(!strcmp(nm,PEM_STRING_DSA) && | |
197 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
198 | ||
0bee0e62 | 199 | if(!strcmp(nm,PEM_STRING_ECPRIVATEKEY) && |
4d94ae00 | 200 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; |
ce1b4fe1 DSH |
201 | /* Permit older strings */ |
202 | ||
203 | if(!strcmp(nm,PEM_STRING_X509_OLD) && | |
204 | !strcmp(name,PEM_STRING_X509)) return 1; | |
205 | ||
206 | if(!strcmp(nm,PEM_STRING_X509_REQ_OLD) && | |
207 | !strcmp(name,PEM_STRING_X509_REQ)) return 1; | |
208 | ||
209 | /* Allow normal certs to be read as trusted certs */ | |
210 | if(!strcmp(nm,PEM_STRING_X509) && | |
211 | !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1; | |
212 | ||
213 | if(!strcmp(nm,PEM_STRING_X509_OLD) && | |
214 | !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1; | |
215 | ||
3142c86d DSH |
216 | /* Some CAs use PKCS#7 with CERTIFICATE headers */ |
217 | if(!strcmp(nm, PEM_STRING_X509) && | |
218 | !strcmp(name, PEM_STRING_PKCS7)) return 1; | |
219 | ||
ce1b4fe1 DSH |
220 | return 0; |
221 | } | |
222 | ||
1241126a | 223 | int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp, |
74678cc2 | 224 | pem_password_cb *cb, void *u) |
d02b48c6 RE |
225 | { |
226 | EVP_CIPHER_INFO cipher; | |
227 | char *nm=NULL,*header=NULL; | |
1241126a | 228 | unsigned char *data=NULL; |
d02b48c6 | 229 | long len; |
1241126a | 230 | int ret = 0; |
d02b48c6 RE |
231 | |
232 | for (;;) | |
233 | { | |
f769ce3e DSH |
234 | if (!PEM_read_bio(bp,&nm,&header,&data,&len)) { |
235 | if(ERR_GET_REASON(ERR_peek_error()) == | |
236 | PEM_R_NO_START_LINE) | |
237 | ERR_add_error_data(2, "Expecting: ", name); | |
1241126a | 238 | return 0; |
f769ce3e | 239 | } |
ce1b4fe1 | 240 | if(check_pem(nm, name)) break; |
26a3a48d RL |
241 | OPENSSL_free(nm); |
242 | OPENSSL_free(header); | |
243 | OPENSSL_free(data); | |
d02b48c6 RE |
244 | } |
245 | if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err; | |
74678cc2 | 246 | if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err; |
1241126a DSH |
247 | |
248 | *pdata = data; | |
249 | *plen = len; | |
250 | ||
251 | if (pnm) | |
252 | *pnm = nm; | |
253 | ||
254 | ret = 1; | |
255 | ||
d02b48c6 | 256 | err: |
40efa672 | 257 | if (!ret || !pnm) OPENSSL_free(nm); |
26a3a48d | 258 | OPENSSL_free(header); |
1241126a DSH |
259 | if (!ret) OPENSSL_free(data); |
260 | return ret; | |
d02b48c6 RE |
261 | } |
262 | ||
cf1b7d96 | 263 | #ifndef OPENSSL_NO_FP_API |
8bb826ee | 264 | int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp, |
41a15c4f BL |
265 | char *x, const EVP_CIPHER *enc, unsigned char *kstr, |
266 | int klen, pem_password_cb *callback, void *u) | |
d02b48c6 RE |
267 | { |
268 | BIO *b; | |
269 | int ret; | |
270 | ||
271 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
272 | { | |
273 | PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB); | |
274 | return(0); | |
275 | } | |
276 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
74678cc2 | 277 | ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback,u); |
d02b48c6 RE |
278 | BIO_free(b); |
279 | return(ret); | |
280 | } | |
281 | #endif | |
282 | ||
8bb826ee | 283 | int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp, |
41a15c4f BL |
284 | char *x, const EVP_CIPHER *enc, unsigned char *kstr, |
285 | int klen, pem_password_cb *callback, void *u) | |
d02b48c6 RE |
286 | { |
287 | EVP_CIPHER_CTX ctx; | |
288 | int dsize=0,i,j,ret=0; | |
289 | unsigned char *p,*data=NULL; | |
e778802f | 290 | const char *objstr=NULL; |
d02b48c6 RE |
291 | char buf[PEM_BUFSIZE]; |
292 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
293 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
294 | ||
295 | if (enc != NULL) | |
296 | { | |
297 | objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc)); | |
298 | if (objstr == NULL) | |
299 | { | |
300 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); | |
301 | goto err; | |
302 | } | |
303 | } | |
304 | ||
58964a49 RE |
305 | if ((dsize=i2d(x,NULL)) < 0) |
306 | { | |
a0e7c8ee | 307 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_ASN1_LIB); |
58964a49 RE |
308 | dsize=0; |
309 | goto err; | |
310 | } | |
d02b48c6 | 311 | /* dzise + 8 bytes are needed */ |
17ed6c06 | 312 | /* actually it needs the cipher block size extra... */ |
26a3a48d | 313 | data=(unsigned char *)OPENSSL_malloc((unsigned int)dsize+20); |
d02b48c6 RE |
314 | if (data == NULL) |
315 | { | |
316 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
317 | goto err; | |
318 | } | |
319 | p=data; | |
320 | i=i2d(x,&p); | |
321 | ||
322 | if (enc != NULL) | |
323 | { | |
324 | if (kstr == NULL) | |
325 | { | |
326 | if (callback == NULL) | |
1241126a | 327 | klen=PEM_def_callback(buf,PEM_BUFSIZE,1,u); |
d02b48c6 | 328 | else |
74678cc2 | 329 | klen=(*callback)(buf,PEM_BUFSIZE,1,u); |
d02b48c6 RE |
330 | if (klen <= 0) |
331 | { | |
332 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY); | |
333 | goto err; | |
334 | } | |
a53955d8 UM |
335 | #ifdef CHARSET_EBCDIC |
336 | /* Convert the pass phrase from EBCDIC */ | |
337 | ebcdic2ascii(buf, buf, klen); | |
338 | #endif | |
d02b48c6 RE |
339 | kstr=(unsigned char *)buf; |
340 | } | |
eb952088 | 341 | RAND_add(data,i,0);/* put in the RSA key. */ |
27545970 | 342 | OPENSSL_assert(enc->iv_len <= (int)sizeof(iv)); |
915c6a21 | 343 | if (RAND_pseudo_bytes(iv,enc->iv_len) < 0) /* Generate a salt */ |
e7f97e2d | 344 | goto err; |
d02b48c6 RE |
345 | /* The 'iv' is used as the iv and as a salt. It is |
346 | * NOT taken from the BytesToKey function */ | |
347 | EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL); | |
348 | ||
43d60164 | 349 | if (kstr == (unsigned char *)buf) OPENSSL_cleanse(buf,PEM_BUFSIZE); |
d02b48c6 | 350 | |
54a656ef BL |
351 | OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf); |
352 | ||
d02b48c6 RE |
353 | buf[0]='\0'; |
354 | PEM_proc_type(buf,PEM_TYPE_ENCRYPTED); | |
915c6a21 | 355 | PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv); |
d02b48c6 | 356 | /* k=strlen(buf); */ |
cecd2638 DSH |
357 | |
358 | EVP_CIPHER_CTX_init(&ctx); | |
581f1c84 | 359 | EVP_EncryptInit_ex(&ctx,enc,NULL,key,iv); |
d02b48c6 | 360 | EVP_EncryptUpdate(&ctx,data,&j,data,i); |
581f1c84 | 361 | EVP_EncryptFinal_ex(&ctx,&(data[j]),&i); |
cecd2638 | 362 | EVP_CIPHER_CTX_cleanup(&ctx); |
d02b48c6 RE |
363 | i+=j; |
364 | ret=1; | |
365 | } | |
366 | else | |
367 | { | |
368 | ret=1; | |
369 | buf[0]='\0'; | |
370 | } | |
371 | i=PEM_write_bio(bp,name,buf,data,i); | |
372 | if (i <= 0) ret=0; | |
373 | err: | |
4579924b RL |
374 | OPENSSL_cleanse(key,sizeof(key)); |
375 | OPENSSL_cleanse(iv,sizeof(iv)); | |
376 | OPENSSL_cleanse((char *)&ctx,sizeof(ctx)); | |
377 | OPENSSL_cleanse(buf,PEM_BUFSIZE); | |
6ff7c958 BM |
378 | if (data != NULL) |
379 | { | |
4579924b | 380 | OPENSSL_cleanse(data,(unsigned int)dsize); |
6ff7c958 BM |
381 | OPENSSL_free(data); |
382 | } | |
d02b48c6 RE |
383 | return(ret); |
384 | } | |
385 | ||
6b691a5c | 386 | int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen, |
74678cc2 | 387 | pem_password_cb *callback,void *u) |
d02b48c6 RE |
388 | { |
389 | int i,j,o,klen; | |
390 | long len; | |
391 | EVP_CIPHER_CTX ctx; | |
392 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
393 | char buf[PEM_BUFSIZE]; | |
394 | ||
395 | len= *plen; | |
396 | ||
397 | if (cipher->cipher == NULL) return(1); | |
398 | if (callback == NULL) | |
1241126a | 399 | klen=PEM_def_callback(buf,PEM_BUFSIZE,0,u); |
d02b48c6 | 400 | else |
74678cc2 | 401 | klen=callback(buf,PEM_BUFSIZE,0,u); |
d02b48c6 RE |
402 | if (klen <= 0) |
403 | { | |
404 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ); | |
405 | return(0); | |
406 | } | |
a53955d8 UM |
407 | #ifdef CHARSET_EBCDIC |
408 | /* Convert the pass phrase from EBCDIC */ | |
409 | ebcdic2ascii(buf, buf, klen); | |
410 | #endif | |
411 | ||
d02b48c6 RE |
412 | EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]), |
413 | (unsigned char *)buf,klen,1,key,NULL); | |
414 | ||
415 | j=(int)len; | |
cecd2638 | 416 | EVP_CIPHER_CTX_init(&ctx); |
581f1c84 | 417 | EVP_DecryptInit_ex(&ctx,cipher->cipher,NULL, key,&(cipher->iv[0])); |
d02b48c6 | 418 | EVP_DecryptUpdate(&ctx,data,&i,data,j); |
581f1c84 | 419 | o=EVP_DecryptFinal_ex(&ctx,&(data[i]),&j); |
d02b48c6 | 420 | EVP_CIPHER_CTX_cleanup(&ctx); |
4579924b RL |
421 | OPENSSL_cleanse((char *)buf,sizeof(buf)); |
422 | OPENSSL_cleanse((char *)key,sizeof(key)); | |
d02b48c6 RE |
423 | j+=i; |
424 | if (!o) | |
425 | { | |
426 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT); | |
427 | return(0); | |
428 | } | |
429 | *plen=j; | |
430 | return(1); | |
431 | } | |
432 | ||
6b691a5c | 433 | int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher) |
d02b48c6 RE |
434 | { |
435 | int o; | |
e778802f | 436 | const EVP_CIPHER *enc=NULL; |
d02b48c6 | 437 | char *p,c; |
a229e303 | 438 | char **header_pp = &header; |
d02b48c6 RE |
439 | |
440 | cipher->cipher=NULL; | |
441 | if ((header == NULL) || (*header == '\0') || (*header == '\n')) | |
442 | return(1); | |
443 | if (strncmp(header,"Proc-Type: ",11) != 0) | |
444 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); } | |
445 | header+=11; | |
446 | if (*header != '4') return(0); header++; | |
447 | if (*header != ',') return(0); header++; | |
448 | if (strncmp(header,"ENCRYPTED",9) != 0) | |
449 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); } | |
450 | for (; (*header != '\n') && (*header != '\0'); header++) | |
451 | ; | |
452 | if (*header == '\0') | |
453 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); } | |
454 | header++; | |
455 | if (strncmp(header,"DEK-Info: ",10) != 0) | |
456 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); } | |
457 | header+=10; | |
458 | ||
459 | p=header; | |
460 | for (;;) | |
461 | { | |
462 | c= *header; | |
a53955d8 | 463 | #ifndef CHARSET_EBCDIC |
d02b48c6 RE |
464 | if (!( ((c >= 'A') && (c <= 'Z')) || (c == '-') || |
465 | ((c >= '0') && (c <= '9')))) | |
466 | break; | |
a53955d8 UM |
467 | #else |
468 | if (!( isupper(c) || (c == '-') || | |
469 | isdigit(c))) | |
470 | break; | |
471 | #endif | |
d02b48c6 RE |
472 | header++; |
473 | } | |
474 | *header='\0'; | |
475 | o=OBJ_sn2nid(p); | |
476 | cipher->cipher=enc=EVP_get_cipherbyname(p); | |
477 | *header=c; | |
478 | header++; | |
479 | ||
480 | if (enc == NULL) | |
481 | { | |
482 | PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION); | |
483 | return(0); | |
484 | } | |
8c3c5701 | 485 | if (!load_iv(header_pp,&(cipher->iv[0]),enc->iv_len)) |
a229e303 | 486 | return(0); |
d02b48c6 RE |
487 | |
488 | return(1); | |
489 | } | |
490 | ||
8c3c5701 | 491 | static int load_iv(char **fromp, unsigned char *to, int num) |
d02b48c6 RE |
492 | { |
493 | int v,i; | |
8c3c5701 | 494 | char *from; |
d02b48c6 RE |
495 | |
496 | from= *fromp; | |
497 | for (i=0; i<num; i++) to[i]=0; | |
498 | num*=2; | |
499 | for (i=0; i<num; i++) | |
500 | { | |
501 | if ((*from >= '0') && (*from <= '9')) | |
502 | v= *from-'0'; | |
503 | else if ((*from >= 'A') && (*from <= 'F')) | |
504 | v= *from-'A'+10; | |
505 | else if ((*from >= 'a') && (*from <= 'f')) | |
506 | v= *from-'a'+10; | |
507 | else | |
508 | { | |
509 | PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS); | |
510 | return(0); | |
511 | } | |
512 | from++; | |
513 | to[i/2]|=v<<(long)((!(i&1))*4); | |
514 | } | |
515 | ||
516 | *fromp=from; | |
517 | return(1); | |
518 | } | |
519 | ||
cf1b7d96 | 520 | #ifndef OPENSSL_NO_FP_API |
6b691a5c UM |
521 | int PEM_write(FILE *fp, char *name, char *header, unsigned char *data, |
522 | long len) | |
d02b48c6 RE |
523 | { |
524 | BIO *b; | |
525 | int ret; | |
526 | ||
527 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
528 | { | |
529 | PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB); | |
530 | return(0); | |
531 | } | |
532 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
533 | ret=PEM_write_bio(b, name, header, data,len); | |
534 | BIO_free(b); | |
535 | return(ret); | |
536 | } | |
537 | #endif | |
538 | ||
6b691a5c UM |
539 | int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data, |
540 | long len) | |
d02b48c6 RE |
541 | { |
542 | int nlen,n,i,j,outl; | |
216ad9ef | 543 | unsigned char *buf = NULL; |
d02b48c6 RE |
544 | EVP_ENCODE_CTX ctx; |
545 | int reason=ERR_R_BUF_LIB; | |
546 | ||
547 | EVP_EncodeInit(&ctx); | |
548 | nlen=strlen(name); | |
549 | ||
550 | if ( (BIO_write(bp,"-----BEGIN ",11) != 11) || | |
551 | (BIO_write(bp,name,nlen) != nlen) || | |
552 | (BIO_write(bp,"-----\n",6) != 6)) | |
553 | goto err; | |
554 | ||
555 | i=strlen(header); | |
556 | if (i > 0) | |
557 | { | |
558 | if ( (BIO_write(bp,header,i) != i) || | |
559 | (BIO_write(bp,"\n",1) != 1)) | |
560 | goto err; | |
561 | } | |
562 | ||
216ad9ef | 563 | buf = OPENSSL_malloc(PEM_BUFSIZE*8); |
d02b48c6 RE |
564 | if (buf == NULL) |
565 | { | |
566 | reason=ERR_R_MALLOC_FAILURE; | |
567 | goto err; | |
568 | } | |
569 | ||
570 | i=j=0; | |
571 | while (len > 0) | |
572 | { | |
573 | n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len); | |
574 | EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n); | |
575 | if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl)) | |
576 | goto err; | |
577 | i+=outl; | |
578 | len-=n; | |
579 | j+=n; | |
580 | } | |
581 | EVP_EncodeFinal(&ctx,buf,&outl); | |
582 | if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err; | |
26a3a48d | 583 | OPENSSL_free(buf); |
216ad9ef | 584 | buf = NULL; |
d02b48c6 RE |
585 | if ( (BIO_write(bp,"-----END ",9) != 9) || |
586 | (BIO_write(bp,name,nlen) != nlen) || | |
587 | (BIO_write(bp,"-----\n",6) != 6)) | |
588 | goto err; | |
589 | return(i+outl); | |
590 | err: | |
216ad9ef DSH |
591 | if (buf) |
592 | OPENSSL_free(buf); | |
d02b48c6 RE |
593 | PEMerr(PEM_F_PEM_WRITE_BIO,reason); |
594 | return(0); | |
595 | } | |
596 | ||
cf1b7d96 | 597 | #ifndef OPENSSL_NO_FP_API |
6b691a5c UM |
598 | int PEM_read(FILE *fp, char **name, char **header, unsigned char **data, |
599 | long *len) | |
d02b48c6 RE |
600 | { |
601 | BIO *b; | |
602 | int ret; | |
603 | ||
604 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
605 | { | |
606 | PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB); | |
607 | return(0); | |
608 | } | |
609 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
610 | ret=PEM_read_bio(b, name, header, data,len); | |
611 | BIO_free(b); | |
612 | return(ret); | |
613 | } | |
614 | #endif | |
615 | ||
6b691a5c UM |
616 | int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data, |
617 | long *len) | |
d02b48c6 RE |
618 | { |
619 | EVP_ENCODE_CTX ctx; | |
620 | int end=0,i,k,bl=0,hl=0,nohead=0; | |
621 | char buf[256]; | |
622 | BUF_MEM *nameB; | |
623 | BUF_MEM *headerB; | |
624 | BUF_MEM *dataB,*tmpB; | |
625 | ||
626 | nameB=BUF_MEM_new(); | |
627 | headerB=BUF_MEM_new(); | |
628 | dataB=BUF_MEM_new(); | |
629 | if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) | |
630 | { | |
2b61034b BM |
631 | BUF_MEM_free(nameB); |
632 | BUF_MEM_free(headerB); | |
633 | BUF_MEM_free(dataB); | |
d02b48c6 RE |
634 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); |
635 | return(0); | |
636 | } | |
637 | ||
638 | buf[254]='\0'; | |
639 | for (;;) | |
640 | { | |
641 | i=BIO_gets(bp,buf,254); | |
642 | ||
643 | if (i <= 0) | |
644 | { | |
645 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE); | |
646 | goto err; | |
647 | } | |
648 | ||
649 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
650 | buf[++i]='\n'; buf[++i]='\0'; | |
651 | ||
652 | if (strncmp(buf,"-----BEGIN ",11) == 0) | |
653 | { | |
654 | i=strlen(&(buf[11])); | |
655 | ||
656 | if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0) | |
657 | continue; | |
658 | if (!BUF_MEM_grow(nameB,i+9)) | |
659 | { | |
660 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
661 | goto err; | |
662 | } | |
61f5b6f3 | 663 | memcpy(nameB->data,&(buf[11]),i-6); |
d02b48c6 RE |
664 | nameB->data[i-6]='\0'; |
665 | break; | |
666 | } | |
667 | } | |
668 | hl=0; | |
669 | if (!BUF_MEM_grow(headerB,256)) | |
670 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
671 | headerB->data[0]='\0'; | |
672 | for (;;) | |
673 | { | |
674 | i=BIO_gets(bp,buf,254); | |
675 | if (i <= 0) break; | |
676 | ||
677 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
678 | buf[++i]='\n'; buf[++i]='\0'; | |
679 | ||
680 | if (buf[0] == '\n') break; | |
681 | if (!BUF_MEM_grow(headerB,hl+i+9)) | |
682 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
683 | if (strncmp(buf,"-----END ",9) == 0) | |
684 | { | |
685 | nohead=1; | |
686 | break; | |
687 | } | |
61f5b6f3 | 688 | memcpy(&(headerB->data[hl]),buf,i); |
d02b48c6 RE |
689 | headerB->data[hl+i]='\0'; |
690 | hl+=i; | |
691 | } | |
692 | ||
693 | bl=0; | |
694 | if (!BUF_MEM_grow(dataB,1024)) | |
695 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
696 | dataB->data[0]='\0'; | |
697 | if (!nohead) | |
698 | { | |
699 | for (;;) | |
700 | { | |
701 | i=BIO_gets(bp,buf,254); | |
702 | if (i <= 0) break; | |
703 | ||
704 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
705 | buf[++i]='\n'; buf[++i]='\0'; | |
706 | ||
707 | if (i != 65) end=1; | |
708 | if (strncmp(buf,"-----END ",9) == 0) | |
709 | break; | |
710 | if (i > 65) break; | |
54a656ef | 711 | if (!BUF_MEM_grow_clean(dataB,i+bl+9)) |
d02b48c6 RE |
712 | { |
713 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
714 | goto err; | |
715 | } | |
61f5b6f3 | 716 | memcpy(&(dataB->data[bl]),buf,i); |
d02b48c6 RE |
717 | dataB->data[bl+i]='\0'; |
718 | bl+=i; | |
719 | if (end) | |
720 | { | |
721 | buf[0]='\0'; | |
722 | i=BIO_gets(bp,buf,254); | |
723 | if (i <= 0) break; | |
724 | ||
725 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
726 | buf[++i]='\n'; buf[++i]='\0'; | |
727 | ||
728 | break; | |
729 | } | |
730 | } | |
731 | } | |
732 | else | |
733 | { | |
734 | tmpB=headerB; | |
735 | headerB=dataB; | |
736 | dataB=tmpB; | |
737 | bl=hl; | |
738 | } | |
739 | i=strlen(nameB->data); | |
740 | if ( (strncmp(buf,"-----END ",9) != 0) || | |
61f5b6f3 | 741 | (strncmp(nameB->data,&(buf[9]),i) != 0) || |
d02b48c6 RE |
742 | (strncmp(&(buf[9+i]),"-----\n",6) != 0)) |
743 | { | |
744 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE); | |
745 | goto err; | |
746 | } | |
747 | ||
748 | EVP_DecodeInit(&ctx); | |
749 | i=EVP_DecodeUpdate(&ctx, | |
750 | (unsigned char *)dataB->data,&bl, | |
751 | (unsigned char *)dataB->data,bl); | |
752 | if (i < 0) | |
753 | { | |
754 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
755 | goto err; | |
756 | } | |
757 | i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k); | |
758 | if (i < 0) | |
759 | { | |
760 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
761 | goto err; | |
762 | } | |
763 | bl+=k; | |
764 | ||
765 | if (bl == 0) goto err; | |
766 | *name=nameB->data; | |
767 | *header=headerB->data; | |
768 | *data=(unsigned char *)dataB->data; | |
769 | *len=bl; | |
26a3a48d RL |
770 | OPENSSL_free(nameB); |
771 | OPENSSL_free(headerB); | |
772 | OPENSSL_free(dataB); | |
d02b48c6 RE |
773 | return(1); |
774 | err: | |
775 | BUF_MEM_free(nameB); | |
776 | BUF_MEM_free(headerB); | |
777 | BUF_MEM_free(dataB); | |
778 | return(0); | |
779 | } | |
d82e2718 DSH |
780 | |
781 | /* Check pem string and return prefix length. | |
782 | * If for example the pem_str == "RSA PRIVATE KEY" and suffix = "PRIVATE KEY" | |
783 | * the return value is 3 for the string "RSA". | |
784 | */ | |
785 | ||
786 | int pem_check_suffix(char *pem_str, char *suffix) | |
787 | { | |
788 | int pem_len = strlen(pem_str); | |
789 | int suffix_len = strlen(suffix); | |
790 | char *p; | |
791 | if (suffix_len + 1 >= pem_len) | |
792 | return 0; | |
793 | if (strcmp(pem_str - suffix_len, suffix)) | |
794 | return 0; | |
795 | p = pem_str - suffix_len - 1; | |
796 | if (*p != ' ') | |
797 | return 0; | |
798 | return p - pem_str; | |
799 | } | |
800 |