1/* fips186-dsa.c - FIPS 186 DSA tests
2 *	Copyright (C) 2008 Free Software Foundation, Inc.
3 *
4 * This file is part of Libgcrypt.
5 *
6 * Libgcrypt is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of
9 * the License, or (at your option) any later version.
10 *
11 * Libgcrypt is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20#ifdef HAVE_CONFIG_H
21# include <config.h>
22#endif
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <stdarg.h>
27
28#ifdef _GCRYPT_IN_LIBGCRYPT
29# include "../src/gcrypt.h"
30#else
31# include <gcrypt.h>
32#endif
33
34
35#define my_isascii(c) (!((c) & 0x80))
36#define digitp(p)   (*(p) >= '0' && *(p) <= '9')
37#define hexdigitp(a) (digitp (a)                     \
38                      || (*(a) >= 'A' && *(a) <= 'F')  \
39                      || (*(a) >= 'a' && *(a) <= 'f'))
40#define xtoi_1(p)   (*(p) <= '9'? (*(p)- '0'): \
41                     *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
42#define xtoi_2(p)   ((xtoi_1(p) * 16) + xtoi_1((p)+1))
43#define DIM(v)		     (sizeof(v)/sizeof((v)[0]))
44#define DIMof(type,member)   DIM(((type *)0)->member)
45
46static int verbose;
47static int error_count;
48
49static void
50info (const char *format, ...)
51{
52  va_list arg_ptr;
53
54  va_start (arg_ptr, format);
55  vfprintf (stderr, format, arg_ptr);
56  va_end (arg_ptr);
57}
58
59static void
60fail (const char *format, ...)
61{
62  va_list arg_ptr;
63
64  va_start (arg_ptr, format);
65  vfprintf (stderr, format, arg_ptr);
66  va_end (arg_ptr);
67  error_count++;
68}
69
70static void
71die (const char *format, ...)
72{
73  va_list arg_ptr;
74
75  va_start (arg_ptr, format);
76  vfprintf (stderr, format, arg_ptr);
77  va_end (arg_ptr);
78  exit (1);
79}
80
81static void
82show_sexp (const char *prefix, gcry_sexp_t a)
83{
84  char *buf;
85  size_t size;
86
87  if (prefix)
88    fputs (prefix, stderr);
89  size = gcry_sexp_sprint (a, GCRYSEXP_FMT_ADVANCED, NULL, 0);
90  buf = gcry_xmalloc (size);
91
92  gcry_sexp_sprint (a, GCRYSEXP_FMT_ADVANCED, buf, size);
93  fprintf (stderr, "%.*s", (int)size, buf);
94  gcry_free (buf);
95}
96
97static gcry_mpi_t
98mpi_from_string (const char *string)
99{
100  gpg_error_t err;
101  gcry_mpi_t a;
102
103  err = gcry_mpi_scan (&a, GCRYMPI_FMT_HEX, string, 0, NULL);
104  if (err)
105    die ("error converting string to mpi: %s\n", gpg_strerror (err));
106  return a;
107}
108
109/* Convert STRING consisting of hex characters into its binary
110   representation and return it as an allocated buffer. The valid
111   length of the buffer is returned at R_LENGTH.  The string is
112   delimited by end of string.  The function returns NULL on
113   error.  */
114static void *
115data_from_hex (const char *string, size_t *r_length)
116{
117  const char *s;
118  unsigned char *buffer;
119  size_t length;
120
121  buffer = gcry_xmalloc (strlen(string)/2+1);
122  length = 0;
123  for (s=string; *s; s +=2 )
124    {
125      if (!hexdigitp (s) || !hexdigitp (s+1))
126        die ("error parsing hex string `%s'\n", string);
127      ((unsigned char*)buffer)[length++] = xtoi_2 (s);
128    }
129  *r_length = length;
130  return buffer;
131}
132
133
134static void
135extract_cmp_mpi (gcry_sexp_t sexp, const char *name, const char *expected)
136{
137  gcry_sexp_t l1;
138  gcry_mpi_t a, b;
139
140  l1 = gcry_sexp_find_token (sexp, name, 0);
141  a = gcry_sexp_nth_mpi (l1, 1, GCRYMPI_FMT_USG);
142  b = mpi_from_string (expected);
143  if (!a)
144    fail ("parameter \"%s\" missing in key\n", name);
145  else if ( gcry_mpi_cmp (a, b) )
146    fail ("parameter \"%s\" does not match expected value\n", name);
147  gcry_mpi_release (b);
148  gcry_mpi_release (a);
149  gcry_sexp_release (l1);
150}
151
152
153static void
154extract_cmp_data (gcry_sexp_t sexp, const char *name, const char *expected)
155{
156  gcry_sexp_t l1;
157  const void *a;
158  size_t alen;
159  void *b;
160  size_t blen;
161
162  l1 = gcry_sexp_find_token (sexp, name, 0);
163  a = gcry_sexp_nth_data (l1, 1, &alen);
164  b = data_from_hex (expected, &blen);
165  if (!a)
166    fail ("parameter \"%s\" missing in key\n", name);
167  else if ( alen != blen || memcmp (a, b, alen) )
168    fail ("parameter \"%s\" does not match expected value\n", name);
169  gcry_free (b);
170  gcry_sexp_release (l1);
171}
172
173static void
174extract_cmp_int (gcry_sexp_t sexp, const char *name, int expected)
175{
176  gcry_sexp_t l1;
177  char *a;
178
179  l1 = gcry_sexp_find_token (sexp, name, 0);
180  a = gcry_sexp_nth_string (l1, 1);
181  if (!a)
182    fail ("parameter \"%s\" missing in key\n", name);
183  else if ( strtoul (a, NULL, 10) != expected )
184    fail ("parameter \"%s\" does not match expected value\n", name);
185  gcry_free (a);
186  gcry_sexp_release (l1);
187}
188
189
190static void
191check_dsa_gen_186_2 (void)
192{
193  static struct {
194    int nbits;
195    const char *p, *q, *g;
196    const char *seed;
197    int counter;
198    const char *h;
199  } tbl[] = {
200    /* These tests are from FIPS 186-2, B.3.1.  */
201    {
202      1024,
203      "d3aed1876054db831d0c1348fbb1ada72507e5fbf9a62cbd47a63aeb7859d6921"
204      "4adeb9146a6ec3f43520f0fd8e3125dd8bbc5d87405d1ac5f82073cd762a3f8d7"
205      "74322657c9da88a7d2f0e1a9ceb84a39cb40876179e6a76e400498de4bb9379b0"
206      "5f5feb7b91eb8fea97ee17a955a0a8a37587a272c4719d6feb6b54ba4ab69",
207      "9c916d121de9a03f71fb21bc2e1c0d116f065a4f",
208      "8157c5f68ca40b3ded11c353327ab9b8af3e186dd2e8dade98761a0996dda99ab"
209      "0250d3409063ad99efae48b10c6ab2bba3ea9a67b12b911a372a2bba260176fad"
210      "b4b93247d9712aad13aa70216c55da9858f7a298deb670a403eb1e7c91b847f1e"
211      "ccfbd14bd806fd42cf45dbb69cd6d6b43add2a78f7d16928eaa04458dea44",
212      "0cb1990c1fd3626055d7a0096f8fa99807399871",
213      98,
214      "00000000000000000000000000000000000000000000000000000000000000000"
215      "00000000000000000000000000000000000000000000000000000000000000000"
216      "00000000000000000000000000000000000000000000000000000000000000000"
217      "0000000000000000000000000000000000000000000000000000000000002"
218    },
219    {
220      1024,
221      "f5c73304080353357de1b5967597c27d65f70aa2fe9b6aed1d0afc2b499adf22f"
222      "8e37937096d88548ac36c4a067f8353c7fed73f96f0d688b19b0624aedbae5dbb"
223      "0ee8835a4c269288c0e1d69479e701ee266bb767af39d748fe7d6afc73fdf44be"
224      "3eb6e661e599670061203e75fc8b3dbd59e40b54f358d0097013a0f3867f9",
225      "f8751166cf4f6f3b07c081fd2a9071f23ca1988d",
226      "1e288a442e02461c418ed67a66d24cacbeb8936fbde62ff995f5fd569dee6be62"
227      "4e4f0f9f8c8093f5d192ab3b3f9ae3f2665d95d27fb10e382f45cd356e7f4eb7a"
228      "665db432113ed06478f93b7cf188ec7a1ee97aec8f91ea7bfceaf8b6e7e5a349c"
229      "4ad3225362ef440c57cbc6e69df15b6699caac85f733555075f04781b2b33",
230      "34b3520d45d240a8861b82c8b61ffa16e67b5cce",
231      622,
232      "00000000000000000000000000000000000000000000000000000000000000000"
233      "00000000000000000000000000000000000000000000000000000000000000000"
234      "00000000000000000000000000000000000000000000000000000000000000000"
235      "0000000000000000000000000000000000000000000000000000000000002",
236    },
237    {
238      1024,
239      "c6c6f4f4eed927fb1c3b0c81010967e530658e6f9698ebe058b4f47b2dc8fcbc7"
240      "b69296b9e8b6cf55681181fe72492668061b262b0046a0d409902e269b0cb69a4"
241      "55ed1a086caf41927f5912bf0e0cbc45ee81a4f98bf6146f6168a228aec80e9cc"
242      "1162d6f6aa412efe82d4f18b95e34ab790daac5bd7aef0b22fa08ba5dbaad",
243      "d32b29f065c1394a30490b6fcbf812a32a8634ab",
244      "06f973c879e2e89345d0ac04f9c34ad69b9eff1680f18d1c8f3e1596c2e8fa8e1"
245      "ecef6830409e9012d4788bef6ec7414d09c981b47c941b77f39dfc49caff5e714"
246      "c97abe25a7a8b5d1fe88700bb96eff91cca64d53700a28b1146d81bad1212d231"
247      "80154c95a01f5aeebb553a8365c38a5ebe05539b51734233776ce9aff98b2",
248      "b6ec750da2f824cb42c5f7e28c81350d97f75125",
249      185,
250      "00000000000000000000000000000000000000000000000000000000000000000"
251      "00000000000000000000000000000000000000000000000000000000000000000"
252      "00000000000000000000000000000000000000000000000000000000000000000"
253      "0000000000000000000000000000000000000000000000000000000000002",
254    },
255    {
256      1024,
257      "b827a9dc9221a6ed1bec7b64d61232aacb2812f888b0a0b3a95033d7a22e77d0b"
258      "ff23bfeed0fb1281b21b8ff7421f0c727d1fb8aa2b843d6885f067e763f83d41f"
259      "d800ab15a7e2b12f71ec2058ee7bd62cd72c26989b272e519785da57bfa1f974b"
260      "c652e1a2d6cfb68477de5635fd019b37add656cff0b802558b31b6d2851e5",
261      "de822c03445b77cec4ad3a6fb0ca39ff97059ddf",
262      "65a9e2d43a378d7063813104586868cacf2fccd51aec1e0b6af8ba3e66dee6371"
263      "681254c3fb5e3929d65e3c4bcd20abd4ddc7cf815623e17b9fc92f02b8d44278b"
264      "848480ffd193104cf5612639511e45bd247708ff6028bd3824f8844c263b46c69"
265      "1f2076f8cd13c5d0be95f1f2a1a17ab1f7e5bc73500bac27d57b473ba9748",
266      "cd2221dd73815a75224e9fde7faf52829b81ac7a",
267      62,
268      "00000000000000000000000000000000000000000000000000000000000000000"
269      "00000000000000000000000000000000000000000000000000000000000000000"
270      "00000000000000000000000000000000000000000000000000000000000000000"
271      "0000000000000000000000000000000000000000000000000000000000002",
272    },
273    {
274      1024,
275      "898a8d93e295c8ef2ffd46976225a1543640640d155a576fafa0be32136165803"
276      "ba2eff2782a2be75cc9ec65db6bd3238cca695b3a5a14726a2a314775c377d891"
277      "354b3de6c89e714a05599ca04132c987f889f72c4fe298ccb31f711c03b07e1d9"
278      "8d72af590754cf3847398b60cecd55a4611692b308809560a83880404c227",
279      "c6d786643d2acfc6b8d576863fda8cfbfbd5e03f",
280      "2fd38b8d21c58e8fb5315a177b8d5dc4c450d574e69348b7b9da367c26e72438d"
281      "af8372e7f0bee84ef5dcbbc3727194a2228431192f1779be24837f22a0e14d10d"
282      "5344da1b8b403df9f9b2655095b3d0f67418ed6cd989f35aa4232e4b7001764fb"
283      "e85d6b2c716980f13272fc4271ac1e234f7e24c023cfc2d2dc0aa1e9af2fb",
284      "73483e697599871af983a281e3afa22e0ed86b68",
285      272,
286      "00000000000000000000000000000000000000000000000000000000000000000"
287      "00000000000000000000000000000000000000000000000000000000000000000"
288      "00000000000000000000000000000000000000000000000000000000000000000"
289      "0000000000000000000000000000000000000000000000000000000000002",
290    },
291
292    /* These tests are generated by the OpenSSL FIPS version.  */
293    {
294      1024,
295      "A404363903FDCE86839BCFD953AAD2DA2B0E70CAED3B5FF5D68F15A1C4BB0A793C"
296      "A9D58FC956804C5901DE0AF99F345ED1A8617C687864BAC044B7C3C3E732A2B255"
297      "EC986AA76EA8CB0E0815B3E0E605650AF7D8058EE7E8EBCDEFFDAB8100D3FC1033"
298      "11BA3AB232EF06BB74BA9A949EC0C7ED324C19B202F4AB725BBB4080C9",
299      "C643946CEA8748E12D430C48DB038F9165814389",
300      "59B7E7BA0033CCE8E6837173420FBB382A784D4154A3C166043F5A68CB92945D16"
301      "892D4CC5585F2D28C780E75A6C20A379E2B58304C1E5FC0D8C15E4E89C4498C8BC"
302      "B90FB36ED8DC0489B9D0BC09EC4411FB0BFADF25485EEAB6700BE0ACF5C44A6ED7"
303      "44A015382FF9B8DA7EAA00DEA135FADC59212DBBFFC1537336FA4B7225",
304      "02708ab36e3f0bfd67ec3b8bd8829d03b84f56bd",
305      50,
306      "02"
307    },
308    {
309      1024,
310      "9C664033DB8B203D826F896D2293C62EF9351D5CFD0F4C0AD7EFDA4DDC7F15987"
311      "6A3C68CAB2586B44FD1BD4DEF7A17905D88D321DD77C4E1720D848CA21D79F9B3"
312      "D8F537338E09B44E9F481E8DA3C56569F63146596A050EF8FAEE8ACA32C666450"
313      "04F675C8806EB4025B0A5ECC39CE89983EA40A183A7CF5208BA958045ABD5",
314      "AD0D8CBA369AF6CD0D2BAC0B4CFCAF0A1F9BCDF7",
315      "74D717F7092A2AF725FDD6C2561D1DBE5AEE40203C638BA8B9F49003857873701"
316      "95A44E515C4E8B344F5CDC7F4A6D38097CD57675E7643AB9700692C69F0A99B0E"
317      "039FDDDFCA8CEB607BDB4ADF2834DE1690F5823FC8199FB8F6F29E5A583B6786A"
318      "C14C7E67106C3B30568CBB9383F89287D578159778EB18216799D16D46498",
319      "6481a12a50384888ee84b61024f7c9c685d6ac96",
320      289,
321      "02"
322    },
323    {
324      1024,
325
326      "B0DFB602EB8462B1DC8C2214A52B587D3E6842CCF1C38D0F7C7F967ED30CF6828"
327      "1E2675B3BAB594755FB1634E66B4C23936F0725A358F8DFF3C307E2601FD66D63"
328      "5B17270450C50BD2BEC29E0E9A471DF1C15B0191517952268A2763D4BD28B8503"
329      "B3399686272B76B11227F693D7833105EF70C2289C3194CF4527024B272DF",
330      "EA649C04911FAB5A41440287A517EF752A40354B",
331      "88C5A4563ECB949763E0B696CD04B21321360F54C0EE7B23E2CEDC30E9E486162"
332      "01BFB1619E7C54B653D1F890C50E04B29205F5E3E2F93A13B0751AF25491C5194"
333      "93C09DDF6B9C173B3846DFB0E7A5C870BBFC78419260C90E20315410691C8326C"
334      "858D7063E7921F3F601158E912C7EE487FF259202BEEB10F6D9E99190F696",
335      "5bf9d17bc62fbbf3d569c92bd4505586b2e5ef1a",
336      626,
337      "02"
338    },
339    {
340      1024,
341      "F783C08D7F9463E48BA87893805C4B34B63C85DF7EBDD9EBEE94DB4AF4E4A415C"
342      "F0F3793AE55096BA1199598798FA8403B28DED7F7C7AFD54FD535861A0150EF4D"
343      "5871465B13837CCF46BEB0A22F8D38DC7D6AE0E14A3845FD0C027CFA97791B977"
344      "CE2808BAD9B43CE69390C0F40016056722D82C0D7B1B27413D026A39D7DAD",
345      "A40D9EE456AED4C8A653FDB47B6629C0B843FE8F",
346      "DF876263E21F263AE6DA57409BD517DCEADB9216048F066D6B58867F8E59A5EEE"
347      "700283A946C1455534618979BE6C227673C1B803910262BD93BC94D5089850614"
348      "F3E29AB64E8C989A7E3E28FE670FFA3EE21DEEEC1AB0B60E1D8E2AA39663BADD7"
349      "2C9F957D7F3D4F17D9FDAD050EB373A6DEFD09F5DA752EAFE046836E14B67",
350      "8a9a57706f69f4f566252cdf6d5cbfdf2020150b",
351      397,
352      "02"
353    },
354    {
355      1024,
356      "D40E4F6461E145859CCF60FD57962840BD75FFF12C22F76626F566842252AD068"
357      "29745F0147056354F6C016CF12762B0E331787925B8128CF5AF81F9B176A51934"
358      "96D792430FF83C7B79BD595BDA10787B34600787FA552EFE3662F37B99AAD3F3A"
359      "093732680A01345192A19BECCE6BF5D498E44ED6BED5B0BA72AAD49E8276B",
360      "D12F1BD0AA78B99247FD9F18EAFEE5C136686EA5",
361      "468EBD20C99449C1E440E6F8E452C6A6BC7551C555FE5E94996E20CFD4DA3B9CC"
362      "58499D6CC2374CCF9C392715A537DE10CFCA8A6A37AFBD187CF6B88D26881E5F5"
363      "7521D9D2C9BBA51E7B87B070BBE73F5C5FE31E752CAF88183516D8503BAAC1159"
364      "928EF50DEE52D96F396B93FB4138D786464C315401A853E57C9A0F9D25839",
365      "30b3599944a914a330a3f49d11ec88f555422aef",
366      678,
367      "02"
368    }
369  };
370  gpg_error_t err;
371  int tno;
372  gcry_sexp_t key_spec, key, pub_key, sec_key, seed_values;
373  gcry_sexp_t l1;
374
375  for (tno = 0; tno < DIM (tbl); tno++)
376    {
377      if (verbose)
378        info ("generating FIPS 186-2 test key %d\n", tno);
379
380      {
381        void *data;
382        size_t datalen;
383
384        data = data_from_hex (tbl[tno].seed, &datalen);
385        err = gcry_sexp_build (&key_spec, NULL,
386                               "(genkey (dsa (nbits %d)(use-fips186-2)"
387                               "(derive-parms(seed %b))))",
388                               tbl[tno].nbits, (int)datalen, data);
389        gcry_free (data);
390      }
391      if (err)
392        die ("error creating S-expression %d: %s\n", tno, gpg_strerror (err));
393
394      err = gcry_pk_genkey (&key, key_spec);
395      gcry_sexp_release (key_spec);
396      if (err)
397        {
398          fail ("error generating key %d: %s\n", tno, gpg_strerror (err));
399          continue;
400        }
401
402      if (verbose > 1)
403        show_sexp ("generated key:\n", key);
404
405      pub_key = gcry_sexp_find_token (key, "public-key", 0);
406      if (!pub_key)
407        fail ("public part missing in key %d\n", tno);
408
409      sec_key = gcry_sexp_find_token (key, "private-key", 0);
410      if (!sec_key)
411        fail ("private part missing in key %d\n", tno);
412
413      l1 = gcry_sexp_find_token (key, "misc-key-info", 0);
414      if (!l1)
415        fail ("misc_key_info part missing in key %d\n", tno);
416      seed_values = gcry_sexp_find_token (l1, "seed-values", 0);
417      if (!seed_values)
418        fail ("seed-values part missing in key %d\n", tno);
419      gcry_sexp_release (l1);
420
421      extract_cmp_mpi (sec_key, "p", tbl[tno].p);
422      extract_cmp_mpi (sec_key, "q", tbl[tno].q);
423      extract_cmp_mpi (sec_key, "g", tbl[tno].g);
424
425      extract_cmp_data (seed_values, "seed", tbl[tno].seed);
426      extract_cmp_int (seed_values, "counter", tbl[tno].counter);
427      extract_cmp_mpi (seed_values, "h", tbl[tno].h);
428
429      gcry_sexp_release (seed_values);
430      gcry_sexp_release (sec_key);
431      gcry_sexp_release (pub_key);
432      gcry_sexp_release (key);
433    }
434}
435
436
437
438int
439main (int argc, char **argv)
440{
441  int debug = 0;
442
443  if (argc > 1 && !strcmp (argv[1], "--verbose"))
444    verbose = 1;
445  else if (argc > 1 && !strcmp (argv[1], "--debug"))
446    {
447      verbose = 2;
448      debug = 1;
449    }
450
451  gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
452  if (!gcry_check_version ("1.4.4"))
453    die ("version mismatch\n");
454  gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
455  if (debug)
456    gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
457  /* No valuable keys are create, so we can speed up our RNG. */
458  gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
459
460
461  check_dsa_gen_186_2 ();
462
463
464  return error_count ? 1 : 0;
465}
466