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pgp-encrypt.c
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1 /*
2  * pgp-encrypt.c
3  * OpenPGP encrypt.
4  *
5  * Copyright (c) 2005 Marko Kreen
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * contrib/pgcrypto/pgp-encrypt.c
30  */
31 
32 #include "postgres.h"
33 
34 #include <time.h>
35 
36 #include "mbuf.h"
37 #include "pgp.h"
38 #include "px.h"
39 
40 #define MDC_DIGEST_LEN 20
41 #define STREAM_ID 0xE0
42 #define STREAM_BLOCK_SHIFT 14
43 
44 static uint8 *
45 render_newlen(uint8 *h, int len)
46 {
47  if (len <= 191)
48  {
49  *h++ = len & 255;
50  }
51  else if (len > 191 && len <= 8383)
52  {
53  *h++ = ((len - 192) >> 8) + 192;
54  *h++ = (len - 192) & 255;
55  }
56  else
57  {
58  *h++ = 255;
59  *h++ = (len >> 24) & 255;
60  *h++ = (len >> 16) & 255;
61  *h++ = (len >> 8) & 255;
62  *h++ = len & 255;
63  }
64  return h;
65 }
66 
67 static int
68 write_tag_only(PushFilter *dst, int tag)
69 {
70  uint8 hdr = 0xC0 | tag;
71 
72  return pushf_write(dst, &hdr, 1);
73 }
74 
75 static int
76 write_normal_header(PushFilter *dst, int tag, int len)
77 {
78  uint8 hdr[8];
79  uint8 *h = hdr;
80 
81  *h++ = 0xC0 | tag;
82  h = render_newlen(h, len);
83  return pushf_write(dst, hdr, h - hdr);
84 }
85 
86 
87 /*
88  * MAC writer
89  */
90 
91 static int
92 mdc_init(PushFilter *dst, void *init_arg, void **priv_p)
93 {
94  int res;
95  PX_MD *md;
96 
97  res = pgp_load_digest(PGP_DIGEST_SHA1, &md);
98  if (res < 0)
99  return res;
100 
101  *priv_p = md;
102  return 0;
103 }
104 
105 static int
106 mdc_write(PushFilter *dst, void *priv, const uint8 *data, int len)
107 {
108  PX_MD *md = priv;
109 
110  px_md_update(md, data, len);
111  return pushf_write(dst, data, len);
112 }
113 
114 static int
115 mdc_flush(PushFilter *dst, void *priv)
116 {
117  int res;
118  uint8 pkt[2 + MDC_DIGEST_LEN];
119  PX_MD *md = priv;
120 
121  /*
122  * create mdc pkt
123  */
124  pkt[0] = 0xD3;
125  pkt[1] = 0x14; /* MDC_DIGEST_LEN */
126  px_md_update(md, pkt, 2);
127  px_md_finish(md, pkt + 2);
128 
129  res = pushf_write(dst, pkt, 2 + MDC_DIGEST_LEN);
130  px_memset(pkt, 0, 2 + MDC_DIGEST_LEN);
131  return res;
132 }
133 
134 static void
135 mdc_free(void *priv)
136 {
137  PX_MD *md = priv;
138 
139  px_md_free(md);
140 }
141 
142 static const PushFilterOps mdc_filter = {
144 };
145 
146 
147 /*
148  * Encrypted pkt writer
149  */
150 #define ENCBUF 8192
151 struct EncStat
152 {
155 };
156 
157 static int
158 encrypt_init(PushFilter *next, void *init_arg, void **priv_p)
159 {
160  struct EncStat *st;
161  PGP_Context *ctx = init_arg;
162  PGP_CFB *ciph;
163  int resync = 1;
164  int res;
165 
166  /* should we use newer packet format? */
167  if (ctx->disable_mdc == 0)
168  {
169  uint8 ver = 1;
170 
171  resync = 0;
172  res = pushf_write(next, &ver, 1);
173  if (res < 0)
174  return res;
175  }
176  res = pgp_cfb_create(&ciph, ctx->cipher_algo,
177  ctx->sess_key, ctx->sess_key_len, resync, NULL);
178  if (res < 0)
179  return res;
180 
181  st = palloc0(sizeof(*st));
182  st->ciph = ciph;
183 
184  *priv_p = st;
185  return ENCBUF;
186 }
187 
188 static int
189 encrypt_process(PushFilter *next, void *priv, const uint8 *data, int len)
190 {
191  int res;
192  struct EncStat *st = priv;
193  int avail = len;
194 
195  while (avail > 0)
196  {
197  int tmplen = avail > ENCBUF ? ENCBUF : avail;
198 
199  res = pgp_cfb_encrypt(st->ciph, data, tmplen, st->buf);
200  if (res < 0)
201  return res;
202 
203  res = pushf_write(next, st->buf, tmplen);
204  if (res < 0)
205  return res;
206 
207  data += tmplen;
208  avail -= tmplen;
209  }
210  return 0;
211 }
212 
213 static void
214 encrypt_free(void *priv)
215 {
216  struct EncStat *st = priv;
217 
218  if (st->ciph)
219  pgp_cfb_free(st->ciph);
220  px_memset(st, 0, sizeof(*st));
221  pfree(st);
222 }
223 
226 };
227 
228 /*
229  * Write Streamable pkts
230  */
231 
233 {
236 };
237 
238 static int
239 pkt_stream_init(PushFilter *next, void *init_arg, void **priv_p)
240 {
241  struct PktStreamStat *st;
242 
243  st = palloc(sizeof(*st));
244  st->final_done = 0;
245  st->pkt_block = 1 << STREAM_BLOCK_SHIFT;
246  *priv_p = st;
247 
248  return st->pkt_block;
249 }
250 
251 static int
252 pkt_stream_process(PushFilter *next, void *priv, const uint8 *data, int len)
253 {
254  int res;
255  uint8 hdr[8];
256  uint8 *h = hdr;
257  struct PktStreamStat *st = priv;
258 
259  if (st->final_done)
260  return PXE_BUG;
261 
262  if (len == st->pkt_block)
263  *h++ = STREAM_ID | STREAM_BLOCK_SHIFT;
264  else
265  {
266  h = render_newlen(h, len);
267  st->final_done = 1;
268  }
269 
270  res = pushf_write(next, hdr, h - hdr);
271  if (res < 0)
272  return res;
273 
274  return pushf_write(next, data, len);
275 }
276 
277 static int
279 {
280  int res;
281  uint8 hdr[8];
282  uint8 *h = hdr;
283  struct PktStreamStat *st = priv;
284 
285  /* stream MUST end with normal packet. */
286  if (!st->final_done)
287  {
288  h = render_newlen(h, 0);
289  res = pushf_write(next, hdr, h - hdr);
290  if (res < 0)
291  return res;
292  st->final_done = 1;
293  }
294  return 0;
295 }
296 
297 static void
298 pkt_stream_free(void *priv)
299 {
300  struct PktStreamStat *st = priv;
301 
302  px_memset(st, 0, sizeof(*st));
303  pfree(st);
304 }
305 
308 };
309 
310 int
312 {
313  int res;
314 
315  res = write_tag_only(dst, tag);
316  if (res < 0)
317  return res;
318 
319  return pushf_create(res_p, &pkt_stream_filter, NULL, dst);
320 }
321 
322 /*
323  * Text conversion filter
324  */
325 
326 static int
327 crlf_process(PushFilter *dst, void *priv, const uint8 *data, int len)
328 {
329  const uint8 *data_end = data + len;
330  const uint8 *p2,
331  *p1 = data;
332  int line_len;
333  static const uint8 crlf[] = {'\r', '\n'};
334  int res = 0;
335 
336  while (p1 < data_end)
337  {
338  p2 = memchr(p1, '\n', data_end - p1);
339  if (p2 == NULL)
340  p2 = data_end;
341 
342  line_len = p2 - p1;
343 
344  /* write data */
345  res = 0;
346  if (line_len > 0)
347  {
348  res = pushf_write(dst, p1, line_len);
349  if (res < 0)
350  break;
351  p1 += line_len;
352  }
353 
354  /* write crlf */
355  while (p1 < data_end && *p1 == '\n')
356  {
357  res = pushf_write(dst, crlf, 2);
358  if (res < 0)
359  break;
360  p1++;
361  }
362  }
363  return res;
364 }
365 
366 static const PushFilterOps crlf_filter = {
367  NULL, crlf_process, NULL, NULL
368 };
369 
370 /*
371  * Initialize literal data packet
372  */
373 static int
375 {
376  int res;
377  int hdrlen;
378  uint8 hdr[6];
379  uint32 t;
380  PushFilter *pkt;
381  int type;
382 
383  /*
384  * Create header
385  */
386 
387  if (ctx->text_mode)
388  type = ctx->unicode_mode ? 'u' : 't';
389  else
390  type = 'b';
391 
392  /*
393  * Store the creation time into packet. The goal is to have as few known
394  * bytes as possible.
395  */
396  t = (uint32) time(NULL);
397 
398  hdr[0] = type;
399  hdr[1] = 0;
400  hdr[2] = (t >> 24) & 255;
401  hdr[3] = (t >> 16) & 255;
402  hdr[4] = (t >> 8) & 255;
403  hdr[5] = t & 255;
404  hdrlen = 6;
405 
407  if (res < 0)
408  return res;
409 
410  res = pushf_create(&pkt, &pkt_stream_filter, ctx, dst);
411  if (res < 0)
412  return res;
413 
414  res = pushf_write(pkt, hdr, hdrlen);
415  if (res < 0)
416  {
417  pushf_free(pkt);
418  return res;
419  }
420 
421  *pf_res = pkt;
422  return 0;
423 }
424 
425 /*
426  * Initialize compression filter
427  */
428 static int
430 {
431  int res;
432  uint8 type = ctx->compress_algo;
433  PushFilter *pkt;
434 
436  if (res < 0)
437  return res;
438 
439  res = pushf_create(&pkt, &pkt_stream_filter, ctx, dst);
440  if (res < 0)
441  return res;
442 
443  res = pushf_write(pkt, &type, 1);
444  if (res >= 0)
445  res = pgp_compress_filter(pf_res, ctx, pkt);
446 
447  if (res < 0)
448  pushf_free(pkt);
449 
450  return res;
451 }
452 
453 /*
454  * Initialize encdata packet
455  */
456 static int
458 {
459  int res;
460  int tag;
461 
462  if (ctx->disable_mdc)
464  else
466 
467  res = write_tag_only(dst, tag);
468  if (res < 0)
469  return res;
470 
471  return pushf_create(pf_res, &pkt_stream_filter, ctx, dst);
472 }
473 
474 /*
475  * write prefix
476  */
477 static int
479 {
480  uint8 prefix[PGP_MAX_BLOCK + 2];
481  int res,
482  bs;
483 
485  if (!pg_strong_random(prefix, bs))
486  return PXE_NO_RANDOM;
487 
488  prefix[bs + 0] = prefix[bs - 2];
489  prefix[bs + 1] = prefix[bs - 1];
490 
491  res = pushf_write(dst, prefix, bs + 2);
492  px_memset(prefix, 0, bs + 2);
493  return res < 0 ? res : 0;
494 }
495 
496 /*
497  * write symmetrically encrypted session key packet
498  */
499 
500 static int
502 {
503  int res;
504  PGP_CFB *cfb;
505  uint8 algo = ctx->cipher_algo;
506 
507  res = pgp_cfb_create(&cfb, ctx->s2k_cipher_algo,
508  ctx->s2k.key, ctx->s2k.key_len, 0, NULL);
509  if (res < 0)
510  return res;
511 
512  pgp_cfb_encrypt(cfb, &algo, 1, dst);
513  pgp_cfb_encrypt(cfb, ctx->sess_key, ctx->sess_key_len, dst + 1);
514 
515  pgp_cfb_free(cfb);
516  return ctx->sess_key_len + 1;
517 }
518 
519 /* 5.3: Symmetric-Key Encrypted Session-Key */
520 static int
522 {
523  uint8 pkt[256];
524  int pktlen;
525  int res;
526  uint8 *p = pkt;
527 
528  *p++ = 4; /* 5.3 - version number */
529  *p++ = ctx->s2k_cipher_algo;
530 
531  *p++ = ctx->s2k.mode;
532  *p++ = ctx->s2k.digest_algo;
533  if (ctx->s2k.mode > 0)
534  {
535  memcpy(p, ctx->s2k.salt, 8);
536  p += 8;
537  }
538  if (ctx->s2k.mode == 3)
539  *p++ = ctx->s2k.iter;
540 
541  if (ctx->use_sess_key)
542  {
543  res = symencrypt_sesskey(ctx, p);
544  if (res < 0)
545  return res;
546  p += res;
547  }
548 
549  pktlen = p - pkt;
551  if (res >= 0)
552  res = pushf_write(dst, pkt, pktlen);
553 
554  px_memset(pkt, 0, pktlen);
555  return res;
556 }
557 
558 /*
559  * key setup
560  */
561 static int
563 {
564  int res;
565 
566  if (ctx->s2k_cipher_algo < 0)
567  ctx->s2k_cipher_algo = ctx->cipher_algo;
568 
569  res = pgp_s2k_fill(&ctx->s2k, ctx->s2k_mode, ctx->s2k_digest_algo, ctx->s2k_count);
570  if (res < 0)
571  return res;
572 
573  return pgp_s2k_process(&ctx->s2k, ctx->s2k_cipher_algo,
574  ctx->sym_key, ctx->sym_key_len);
575 }
576 
577 static int
579 {
580  if (ctx->use_sess_key || ctx->pub_key)
581  {
583  if (!pg_strong_random(ctx->sess_key, ctx->sess_key_len))
584  return PXE_NO_RANDOM;
585  }
586  else
587  {
588  ctx->sess_key_len = ctx->s2k.key_len;
589  memcpy(ctx->sess_key, ctx->s2k.key, ctx->s2k.key_len);
590  }
591 
592  return 0;
593 }
594 
595 /*
596  * combine
597  */
598 int
599 pgp_encrypt(PGP_Context *ctx, MBuf *src, MBuf *dst)
600 {
601  int res;
602  int len;
603  uint8 *buf;
604  PushFilter *pf,
605  *pf_tmp;
606 
607  /*
608  * do we have any key
609  */
610  if (!ctx->sym_key && !ctx->pub_key)
611  return PXE_ARGUMENT_ERROR;
612 
613  /* MBuf writer */
614  res = pushf_create_mbuf_writer(&pf, dst);
615  if (res < 0)
616  goto out;
617 
618  /*
619  * initialize sym_key
620  */
621  if (ctx->sym_key)
622  {
623  res = init_s2k_key(ctx);
624  if (res < 0)
625  goto out;
626  }
627 
628  res = init_sess_key(ctx);
629  if (res < 0)
630  goto out;
631 
632  /*
633  * write keypkt
634  */
635  if (ctx->pub_key)
636  res = pgp_write_pubenc_sesskey(ctx, pf);
637  else
638  res = write_symenc_sesskey(ctx, pf);
639  if (res < 0)
640  goto out;
641 
642  /* encrypted data pkt */
643  res = init_encdata_packet(&pf_tmp, ctx, pf);
644  if (res < 0)
645  goto out;
646  pf = pf_tmp;
647 
648  /* encrypter */
649  res = pushf_create(&pf_tmp, &encrypt_filter, ctx, pf);
650  if (res < 0)
651  goto out;
652  pf = pf_tmp;
653 
654  /* hasher */
655  if (ctx->disable_mdc == 0)
656  {
657  res = pushf_create(&pf_tmp, &mdc_filter, ctx, pf);
658  if (res < 0)
659  goto out;
660  pf = pf_tmp;
661  }
662 
663  /* prefix */
664  res = write_prefix(ctx, pf);
665  if (res < 0)
666  goto out;
667 
668  /* compressor */
669  if (ctx->compress_algo > 0 && ctx->compress_level > 0)
670  {
671  res = init_compress(&pf_tmp, ctx, pf);
672  if (res < 0)
673  goto out;
674  pf = pf_tmp;
675  }
676 
677  /* data streamer */
678  res = init_litdata_packet(&pf_tmp, ctx, pf);
679  if (res < 0)
680  goto out;
681  pf = pf_tmp;
682 
683 
684  /* text conversion? */
685  if (ctx->text_mode && ctx->convert_crlf)
686  {
687  res = pushf_create(&pf_tmp, &crlf_filter, ctx, pf);
688  if (res < 0)
689  goto out;
690  pf = pf_tmp;
691  }
692 
693  /*
694  * chain complete
695  */
696 
697  len = mbuf_grab(src, mbuf_avail(src), &buf);
698  res = pushf_write(pf, buf, len);
699  if (res >= 0)
700  res = pushf_flush(pf);
701 out:
702  pushf_free_all(pf);
703  return res;
704 }
uint8 mode
Definition: pgp.h:124
void pushf_free(PushFilter *mp)
Definition: mbuf.c:408
static int symencrypt_sesskey(PGP_Context *ctx, uint8 *dst)
Definition: pgp-encrypt.c:501
static int mdc_flush(PushFilter *dst, void *priv)
Definition: pgp-encrypt.c:115
int pushf_create_mbuf_writer(PushFilter **res, MBuf *dst)
Definition: mbuf.c:557
#define PXE_ARGUMENT_ERROR
Definition: px.h:58
int sym_key_len
Definition: pgp.h:166
static int32 next
Definition: blutils.c:219
static int init_s2k_key(PGP_Context *ctx)
Definition: pgp-encrypt.c:562
static const PushFilterOps encrypt_filter
Definition: pgp-encrypt.c:224
static int pkt_stream_process(PushFilter *next, void *priv, const uint8 *data, int len)
Definition: pgp-encrypt.c:252
static uint8 * render_newlen(uint8 *h, int len)
Definition: pgp-encrypt.c:45
int cipher_algo
Definition: pgp.h:144
int pushf_flush(PushFilter *mp)
Definition: mbuf.c:512
static const PushFilterOps mdc_filter
Definition: pgp-encrypt.c:142
int pgp_write_pubenc_sesskey(PGP_Context *ctx, PushFilter *dst)
Definition: pgp-pubenc.c:190
static void mdc_free(void *priv)
Definition: pgp-encrypt.c:135
int unicode_mode
Definition: pgp.h:151
#define px_md_update(md, data, dlen)
Definition: px.h:193
const uint8 * sym_key
Definition: pgp.h:165
unsigned char uint8
Definition: c.h:427
static void pkt_stream_free(void *priv)
Definition: pgp-encrypt.c:298
int pgp_compress_filter(PushFilter **res, PGP_Context *ctx, PushFilter *dst)
Definition: pgp-compress.c:335
#define PXE_NO_RANDOM
Definition: px.h:62
int compress_level
Definition: pgp.h:146
int pgp_create_pkt_writer(PushFilter *dst, int tag, PushFilter **res_p)
Definition: pgp-encrypt.c:311
#define px_md_finish(md, buf)
Definition: px.h:194
static int init_encdata_packet(PushFilter **pf_res, PGP_Context *ctx, PushFilter *dst)
Definition: pgp-encrypt.c:457
int disable_mdc
Definition: pgp.h:147
#define PGP_MAX_BLOCK
Definition: pgp.h:113
int pgp_s2k_fill(PGP_S2K *s2k, int mode, int digest_algo, int count)
Definition: pgp-s2k.c:223
uint8 digest_algo
Definition: pgp.h:125
int use_sess_key
Definition: pgp.h:148
static int crlf_process(PushFilter *dst, void *priv, const uint8 *data, int len)
Definition: pgp-encrypt.c:327
static void encrypt_free(void *priv)
Definition: pgp-encrypt.c:214
void pfree(void *pointer)
Definition: mcxt.c:1057
PGP_CFB * ciph
Definition: pgp-encrypt.c:153
static int mdc_write(PushFilter *dst, void *priv, const uint8 *data, int len)
Definition: pgp-encrypt.c:106
uint8 sess_key[PGP_MAX_KEY]
Definition: pgp.h:171
Definition: px.h:98
int mbuf_grab(MBuf *mbuf, int len, uint8 **data_p)
Definition: mbuf.c:155
#define ENCBUF
Definition: pgp-encrypt.c:150
static int write_tag_only(PushFilter *dst, int tag)
Definition: pgp-encrypt.c:68
static int encrypt_init(PushFilter *next, void *init_arg, void **priv_p)
Definition: pgp-encrypt.c:158
uint8 salt[8]
Definition: pgp.h:126
uint8 key[PGP_MAX_KEY]
Definition: pgp.h:129
unsigned int uint32
Definition: c.h:429
int compress_algo
Definition: pgp.h:145
int pgp_get_cipher_key_size(int code)
Definition: pgp.c:147
#define PXE_BUG
Definition: px.h:57
#define STREAM_BLOCK_SHIFT
Definition: pgp-encrypt.c:42
void pushf_free_all(PushFilter *mp)
Definition: mbuf.c:424
static int write_normal_header(PushFilter *dst, int tag, int len)
Definition: pgp-encrypt.c:76
int pgp_s2k_process(PGP_S2K *s2k, int cipher, const uint8 *key, int key_len)
Definition: pgp-s2k.c:279
int mbuf_avail(MBuf *mbuf)
Definition: mbuf.c:50
#define px_md_free(md)
Definition: px.h:195
static int encrypt_process(PushFilter *next, void *priv, const uint8 *data, int len)
Definition: pgp-encrypt.c:189
void pgp_cfb_free(PGP_CFB *ctx)
Definition: pgp-cfb.c:83
void * palloc0(Size size)
Definition: mcxt.c:981
static const PushFilterOps pkt_stream_filter
Definition: pgp-encrypt.c:306
int pgp_load_digest(int code, PX_MD **res)
Definition: pgp.c:183
uint8 buf[ENCBUF]
Definition: pgp-encrypt.c:154
static int mdc_init(PushFilter *dst, void *init_arg, void **priv_p)
Definition: pgp-encrypt.c:92
int pushf_create(PushFilter **mp_p, const PushFilterOps *op, void *init_arg, PushFilter *next)
Definition: mbuf.c:370
static int init_litdata_packet(PushFilter **pf_res, PGP_Context *ctx, PushFilter *dst)
Definition: pgp-encrypt.c:374
#define MDC_DIGEST_LEN
Definition: pgp-encrypt.c:40
bool pg_strong_random(void *buf, size_t len)
static int pkt_stream_init(PushFilter *next, void *init_arg, void **priv_p)
Definition: pgp-encrypt.c:239
unsigned sess_key_len
Definition: pgp.h:172
#define STREAM_ID
Definition: pgp-encrypt.c:41
int pgp_encrypt(PGP_Context *ctx, MBuf *src, MBuf *dst)
Definition: pgp-encrypt.c:599
static int init_compress(PushFilter **pf_res, PGP_Context *ctx, PushFilter *dst)
Definition: pgp-encrypt.c:429
uint8 iter
Definition: pgp.h:127
int pgp_get_cipher_block_size(int code)
Definition: pgp.c:157
Definition: mbuf.c:39
int s2k_cipher_algo
Definition: pgp.h:143
static int init_sess_key(PGP_Context *ctx)
Definition: pgp-encrypt.c:578
uint8 key_len
Definition: pgp.h:130
int convert_crlf
Definition: pgp.h:150
int pgp_cfb_create(PGP_CFB **ctx_p, int algo, const uint8 *key, int key_len, int resync, uint8 *iv)
Definition: pgp-cfb.c:52
int s2k_mode
Definition: pgp.h:140
void * palloc(Size size)
Definition: mcxt.c:950
int s2k_digest_algo
Definition: pgp.h:142
static int write_symenc_sesskey(PGP_Context *ctx, PushFilter *dst)
Definition: pgp-encrypt.c:521
static int pkt_stream_flush(PushFilter *next, void *priv)
Definition: pgp-encrypt.c:278
PGP_PubKey * pub_key
Definition: pgp.h:164
int pushf_write(PushFilter *mp, const uint8 *data, int len)
Definition: mbuf.c:452
int text_mode
Definition: pgp.h:149
static int write_prefix(PGP_Context *ctx, PushFilter *dst)
Definition: pgp-encrypt.c:478
static const PushFilterOps crlf_filter
Definition: pgp-encrypt.c:366
PGP_S2K s2k
Definition: pgp.h:139
int s2k_count
Definition: pgp.h:141
void px_memset(void *ptr, int c, size_t len)
Definition: px.c:127
int pgp_cfb_encrypt(PGP_CFB *ctx, const uint8 *data, int len, uint8 *dst)
Definition: pgp-cfb.c:250