[u/mdw/catacomb] / gkcdsa.c

/* -*-c-*-
 *
 * $Id$
 *
 * Generalized version of KCDSA
 *
 * (c) 2004 Straylight/Edgeware
 */

/*----- Licensing notice --------------------------------------------------*
 *
 * This file is part of Catacomb.
 *
 * Catacomb is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Library General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * Catacomb is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with Catacomb; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 */

/*----- Header files ------------------------------------------------------*/

#include "gkcdsa.h"
#include "group.h"
#include "ghash.h"
#include "mpbarrett.h"
#include "mprand.h"

/*----- Main code ---------------------------------------------------------*/

/* --- @gkcdsa_beginhash@ --- *
 *
 * Arguments:	@const gkcdsa *c@ = pointer to the context structure
 *
 * Returns:	A hashing context for you to hash the message.
 *
 * Use:		Initializes a hash function correctly for you to hash a
 *		message.  Requires @h@, @g@ and @p@.
 */

ghash *gkcdsa_beginhash(const gkcdsa *c)
{
  ghash *h = GH_INIT(c->h);
  mp *v = G_TOINT(c->g, MP_NEW, c->p);
  size_t sz = c->h->bufsz;
  void *p = xmalloc(sz);
  if (/*ouch*/ !v) memset(p, 0, sz);
  else mp_storeb(v, p, sz);
  GH_HASH(h, p, sz);
  mp_drop(v); xfree(p);
  return (h);
}

/* --- @gkcdsa_endhash@ --- *
 *
 * Arguments:	@const gkcdsa *c@ = pointer to the context structure
 *		@ghash *h@ = the hashing context
 *
 * Returns:	---
 *
 * Use:		Does any final thing that KCDSA wants to do when hashing a
 *		message.  (Actually, there's nothing.)	The hashing context
 *		isn't finalized.
 */

void gkcdsa_endhash(const gkcdsa *c, ghash *h) { ; }

/* --- @hashge@ --- *
 *
 * Arguments:	@group *g@ = abstract group
 *		@const gchash *hc@ = hash class
 *		@ge *w@ = a group element
 *
 * Returns:	A hash context, with the hash of @w@ in it.
 */

static ghash *hashge(group *g, const gchash *hc, ge *w)
{
  ghash *h;
  size_t sz;
  void *p;
  buf b;
  int rc;

  sz = hc->hashsz;
  if (sz < g->noctets)
    sz = g->noctets;
  p = xmalloc(sz);
  buf_init(&b, p, sz);
  rc = G_TORAW(g, &b, w);
  assert(rc == 0);
  h = GH_INIT(hc);
  GH_HASH(h, BBASE(&b), BLEN(&b));
  xfree(p);
  return (h);
}

/* --- @gkcdsa_sign@ --- *
 *
 * Arguments:	@const gkcdsa *c@ = my context structure
 *		@gkcdsa_sig *s@ = where to put the signature (initialized)
 *		@const void *m@ = pointer to message hash
 *		@mp *k@ = random exponent for this message or null
 *
 * Returns:	---
 *
 * Use:		Signs a message.  Requires @g@, @u@, @h@, and @r@ if @k@ is
 *		null.  This is a better idea than inventing @k@ yourself.
 */

void gkcdsa_sign(const gkcdsa *c, gkcdsa_sig *s, const void *m, mp *k)
{
  group *g = c->g;
  mp *x, *y;
  ge *z = G_CREATE(g);
  size_t hsz = c->h->hashsz;
  ghash *h;

  if (k) { MP_COPY(k); goto have_k; }
new_k:
  k = mprand_range(k, g->r, c->r, 0);
have_k:
  if (MP_ZEROP(k)) goto new_k;
  G_EXP(g, z, g->g, k);
  if (!s->r) s->r = xmalloc(hsz);
  h = hashge(g, c->h, z); GH_DONE(h, s->r);

  x = mp_loadb(s->s, m, hsz);
  y = mp_loadb(MP_NEW, s->r, hsz);
  x = mp_xor(x, x, y);
  mp_div(0, &x, x, g->r);
  x = mp_sub(x, g->r, x);
  x = mp_add(x, x, k);
  if (MP_CMP(x, >=, g->r)) x = mp_sub(x, x, g->r);
  x = mp_mul(x, x, c->u); mp_div(0, &x, x, g->r);
  s->s = x;
  mp_drop(k); mp_drop(y); GH_DESTROY(h); G_DESTROY(g, z);
}

/* --- @gkcdsa_verify@ --- *
 *
 * Arguments:	@const gkcdsa *c@ = my context structure
 *		@const gkcdsa_sig *s@ = the signature to verify
 *		@const void *m@ = pointer to message hash
 *
 * Returns:	Zero if OK, negative on failure.
 *
 * Use:		Checks a signature on a message,  Requires @g@, @p@, @h@.
 */

int gkcdsa_verify(const gkcdsa *c, const gkcdsa_sig *s, const void *m)
{
  group *g = c->g;
  size_t hsz = c->h->hashsz;
  group_expfactor e[2];
  mp *x, *y;
  ghash *h;
  ge *z;
  octet *p;
  int rc = -1;

  if (MP_CMP(s->s, <, MP_ONE) || MP_CMP(s->s, >=, g->r))
    return (-1);
  x = mp_loadb(MP_NEW, m, hsz); y = mp_loadb(MP_NEW, s->r, hsz);
  x = mp_xor(x, x, y); mp_div(0, &x, x, g->r);
  e[0].base = c->p; e[0].exp = s->s;
  e[1].base = g->g; e[1].exp = x;
  z = G_CREATE(g); G_MEXP(g, z, e, 2);
  h = hashge(g, c->h, z); p = GH_DONE(h, 0);
  if (memcmp(p, s->r, hsz) == 0) rc = 0;
  mp_drop(x); mp_drop(y); G_DESTROY(g, z); GH_DESTROY(h);
  return (rc);
}

/*----- Test rig ----------------------------------------------------------*/

#ifdef TEST_RIG

static group *getgroup(const char *p) {
  group *g; qd_parse qd;
  qd.p = p; qd.e = 0; g = group_parse(&qd);
  if (g && !qd_eofp(&qd)) { G_DESTROYGROUP(g); g = 0; qd.e = "junk at eof"; }
  if (!g) { fprintf(stderr, "bad group string `%.*s|%s': %s\n", qd.p - p,
		    p, qd.p, qd.e); exit(1); }
  return (g);
}

static ge *getge(group *g, const char *p) {
  ge *x = G_CREATE(g);
  if (group_readstring(g, x, p, 0)) {
    fprintf(stderr, "bad group element `%s'\n", p);
    exit(1);
  }
  return (x);
}

static void showge(group *g, const char *p, ge *x) {
  fprintf(stderr, "*** %s = ", p); group_writefile(g, x, stderr);
  putc('\n', stderr);
}

static void showmp(const char *p, mp *x, int r) {
  fprintf(stderr, "*** %s = ", p); mp_writefile(x, stderr, r);
  putc('\n', stderr);
}

static int tsign(dstr *v)
{
  gdsa c;
  gkcdsa_sig s, ss = GKCDSA_SIG_INIT;
  ghash *h;
  mp *k;
  dstr d = DSTR_INIT;
  mp *x;
  int ok = 1;

  c.g = getgroup(v[0].buf); c.h = ghash_byname(v[1].buf);
  c.u = *(mp **)v[2].buf; k = *(mp **)v[4].buf;
  s.r = (octet *)v[5].buf; s.s = *(mp **)v[6].buf;
  DENSURE(&d, c.h->hashsz); d.len = c.h->hashsz; memset(d.buf, 0, d.len);
  ss.r = (octet *)d.buf;

  x = mp_modinv(MP_NEW, c.u, c.g->r);
  c.p = G_CREATE(c.g); G_EXP(c.g, c.p, c.g->g, x);
  h = gkcdsa_beginhash(&c);
  GH_HASH(h, v[3].buf, v[3].len);
  gkcdsa_endhash(&c, h);
  gkcdsa_sign(&c, &ss, GH_DONE(h, 0), k);
  if (memcmp(s.r, ss.r, c.h->hashsz) || !MP_EQ(s.s, ss.s)) {
    ok = 0;
    fprintf(stderr, "*** sign failed!\n");
    fprintf(stderr, "*** group: %s\n", v[0].buf);
    fprintf(stderr, "*** hash: %s\n", c.h->name);
    showmp("private key", c.u, 16);
    showge(c.g, "public key", c.p);
    fprintf(stderr, "*** message: `%s'\n", v[3].buf);
    fprintf(stderr, "*** computed r = ");
    type_hex.dump(&d, stderr); putc('\n', stderr);
    showmp("computed s", ss.s, 16);
    fprintf(stderr, "*** computed r = ");
    type_hex.dump(&v[5], stderr); putc('\n', stderr);
    showmp("expected s", s.s, 16);
  }
  mp_drop(s.s); dstr_destroy(&d); mp_drop(ss.s); mp_drop(x); mp_drop(k);
  mp_drop(c.u); G_DESTROY(c.g, c.p); G_DESTROYGROUP(c.g); GH_DESTROY(h);
  assert(mparena_count(MPARENA_GLOBAL) == 0);
  return (ok);
}

static int tverify(dstr *v)
{
  gkcdsa c;
  gkcdsa_sig s;
  ghash *h;
  int rc, erc;
  int ok = 1;

  c.g = getgroup(v[0].buf); c.h = ghash_byname(v[1].buf);
  c.p = getge(c.g, v[2].buf);
  s.r = (octet *)v[4].buf; s.s = *(mp **)v[5].buf;
  erc = *(int *)v[6].buf;

  h = gkcdsa_beginhash(&c);
  GH_HASH(h, v[3].buf, v[3].len);
  gkcdsa_endhash(&c, h);
  rc = gkcdsa_verify(&c, &s, GH_DONE(h, 0));
  if (!rc != !erc) {
    ok = 0;
    fprintf(stderr, "*** verify failed!\n");
    fprintf(stderr, "*** group: %s\n", v[0].buf);
    fprintf(stderr, "*** hash: %s\n", c.h->name);
    showge(c.g, "public key", c.p);
    fprintf(stderr, "*** message: `%s'\n", v[3].buf);
    fprintf(stderr, "*** sig r = ");
    type_hex.dump(&v[4], stderr); putc('\n', stderr);
    showmp("sig s", s.s, 16);
    fprintf(stderr, "*** expected %s\n", !erc ? "pass" : "fail");
  }
  mp_drop(s.s); G_DESTROY(c.g, c.p); G_DESTROYGROUP(c.g);
  GH_DESTROY(h);
  assert(mparena_count(MPARENA_GLOBAL) == 0);
  return (ok);
}

static const test_chunk tests[] = {
  { "sign", tsign, { &type_string, &type_string, &type_mp, &type_string,
		     &type_mp, &type_hex, &type_mp } },
  { "verify", tverify, { &type_string, &type_string, &type_string,
			 &type_string, &type_hex, &type_mp, &type_int } },
  { 0 }
};

int main(int argc, char *argv[])
{
  sub_init();
  test_run(argc, argv, tests, SRCDIR "/tests/gkcdsa");
  return (0);
}

#endif

/*----- That's all, folks -------------------------------------------------*/
Commit	Line	Data
e9026a0a	1	/* --c--
e9026a0a	2	*
a69a3efd	3	* $Id$
e9026a0a	4	*
	5	* Generalized version of KCDSA
	6	*
	7	* (c) 2004 Straylight/Edgeware
	8	*/
	9
45c0fd36	10	/----- Licensing notice --------------------------------------------------
e9026a0a	11	*
	12	* This file is part of Catacomb.
	13	*
	14	* Catacomb is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU Library General Public License as
	16	* published by the Free Software Foundation; either version 2 of the
	17	* License, or (at your option) any later version.
45c0fd36	18	*
e9026a0a	19	* Catacomb is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU Library General Public License for more details.
45c0fd36	23	*
e9026a0a	24	* You should have received a copy of the GNU Library General Public
	25	* License along with Catacomb; if not, write to the Free
	26	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	27	* MA 02111-1307, USA.
	28	*/
	29
e9026a0a	30	/----- Header files ------------------------------------------------------/
	31
	32	#include "gkcdsa.h"
	33	#include "group.h"
	34	#include "ghash.h"
	35	#include "mpbarrett.h"
	36	#include "mprand.h"
	37
	38	/----- Main code ---------------------------------------------------------/
	39
f4535c64	40	/* --- @gkcdsa_beginhash@ --- *
e9026a0a	41	*
f4535c64	42	* Arguments: @const gkcdsa *c@ = pointer to the context structure
e9026a0a	43	*
	44	* Returns: A hashing context for you to hash the message.
	45	*
	46	* Use: Initializes a hash function correctly for you to hash a
	47	* message. Requires @h@, @g@ and @p@.
	48	*/
	49
	50	ghash gkcdsa_beginhash(const gkcdsa c)
	51	{
	52	ghash *h = GH_INIT(c->h);
	53	mp *v = G_TOINT(c->g, MP_NEW, c->p);
	54	size_t sz = c->h->bufsz;
	55	void *p = xmalloc(sz);
e9026a0a	56	if (/ouch/ !v) memset(p, 0, sz);
	57	else mp_storeb(v, p, sz);
	58	GH_HASH(h, p, sz);
	59	mp_drop(v); xfree(p);
	60	return (h);
	61	}
	62
	63	/* --- @gkcdsa_endhash@ --- *
	64	*
	65	* Arguments: @const gkcdsa *c@ = pointer to the context structure
	66	* @ghash *h@ = the hashing context
	67	*
	68	* Returns: ---
	69	*
	70	* Use: Does any final thing that KCDSA wants to do when hashing a
45c0fd36	71	* message. (Actually, there's nothing.) The hashing context
e9026a0a	72	* isn't finalized.
	73	*/
	74
f4535c64	75	void gkcdsa_endhash(const gkcdsa c, ghash h) { ; }
e9026a0a	76
	77	/* --- @hashge@ --- *
	78	*
	79	* Arguments: @group *g@ = abstract group
	80	* @const gchash *hc@ = hash class
	81	* @ge *w@ = a group element
	82	*
	83	* Returns: A hash context, with the hash of @w@ in it.
	84	*/
	85
	86	static ghash hashge(group g, const gchash hc, ge w)
	87	{
	88	ghash *h;
	89	size_t sz;
	90	void *p;
	91	buf b;
	92	int rc;
	93
	94	sz = hc->hashsz;
	95	if (sz < g->noctets)
	96	sz = g->noctets;
	97	p = xmalloc(sz);
	98	buf_init(&b, p, sz);
	99	rc = G_TORAW(g, &b, w);
	100	assert(rc == 0);
	101	h = GH_INIT(hc);
	102	GH_HASH(h, BBASE(&b), BLEN(&b));
	103	xfree(p);
	104	return (h);
	105	}
	106
	107	/* --- @gkcdsa_sign@ --- *
	108	*
	109	* Arguments: @const gkcdsa *c@ = my context structure
	110	* @gkcdsa_sig *s@ = where to put the signature (initialized)
	111	* @const void *m@ = pointer to message hash
	112	* @mp *k@ = random exponent for this message or null
	113	*
	114	* Returns: ---
	115	*
	116	* Use: Signs a message. Requires @g@, @u@, @h@, and @r@ if @k@ is
	117	* null. This is a better idea than inventing @k@ yourself.
	118	*/
	119
	120	void gkcdsa_sign(const gkcdsa c, gkcdsa_sig s, const void m, mp k)
	121	{
	122	group *g = c->g;
	123	mp x, y;
	124	ge *z = G_CREATE(g);
	125	size_t hsz = c->h->hashsz;
	126	ghash *h;
	127
	128	if (k) { MP_COPY(k); goto have_k; }
	129	new_k:
	130	k = mprand_range(k, g->r, c->r, 0);
	131	have_k:
a69a3efd	132	if (MP_ZEROP(k)) goto new_k;
e9026a0a	133	G_EXP(g, z, g->g, k);
	134	if (!s->r) s->r = xmalloc(hsz);
	135	h = hashge(g, c->h, z); GH_DONE(h, s->r);
	136
	137	x = mp_loadb(s->s, m, hsz);
	138	y = mp_loadb(MP_NEW, s->r, hsz);
	139	x = mp_xor(x, x, y);
	140	mp_div(0, &x, x, g->r);
	141	x = mp_sub(x, g->r, x);
	142	x = mp_add(x, x, k);
	143	if (MP_CMP(x, >=, g->r)) x = mp_sub(x, x, g->r);
	144	x = mp_mul(x, x, c->u); mp_div(0, &x, x, g->r);
	145	s->s = x;
	146	mp_drop(k); mp_drop(y); GH_DESTROY(h); G_DESTROY(g, z);
	147	}
	148
	149	/* --- @gkcdsa_verify@ --- *
	150	*
	151	* Arguments: @const gkcdsa *c@ = my context structure
	152	* @const gkcdsa_sig *s@ = the signature to verify
	153	* @const void *m@ = pointer to message hash
	154	*
	155	* Returns: Zero if OK, negative on failure.
	156	*
	157	* Use: Checks a signature on a message, Requires @g@, @p@, @h@.
	158	*/
	159
	160	int gkcdsa_verify(const gkcdsa c, const gkcdsa_sig s, const void *m)
	161	{
	162	group *g = c->g;
	163	size_t hsz = c->h->hashsz;
	164	group_expfactor e[2];
	165	mp x, y;
	166	ghash *h;
	167	ge *z;
	168	octet *p;
	169	int rc = -1;
	170
	171	if (MP_CMP(s->s, <, MP_ONE) \|\| MP_CMP(s->s, >=, g->r))
	172	return (-1);
	173	x = mp_loadb(MP_NEW, m, hsz); y = mp_loadb(MP_NEW, s->r, hsz);
	174	x = mp_xor(x, x, y); mp_div(0, &x, x, g->r);
	175	e[0].base = c->p; e[0].exp = s->s;
	176	e[1].base = g->g; e[1].exp = x;
	177	z = G_CREATE(g); G_MEXP(g, z, e, 2);
	178	h = hashge(g, c->h, z); p = GH_DONE(h, 0);
	179	if (memcmp(p, s->r, hsz) == 0) rc = 0;
	180	mp_drop(x); mp_drop(y); G_DESTROY(g, z); GH_DESTROY(h);
	181	return (rc);
	182	}
	183
	184	/----- Test rig ----------------------------------------------------------/
	185
	186	#ifdef TEST_RIG
	187
	188	static group getgroup(const char p) {
	189	group *g; qd_parse qd;
	190	qd.p = p; qd.e = 0; g = group_parse(&qd);
	191	if (g && !qd_eofp(&qd)) { G_DESTROYGROUP(g); g = 0; qd.e = "junk at eof"; }
	192	if (!g) { fprintf(stderr, "bad group string `%.*s\|%s': %s\n", qd.p - p,
	193	p, qd.p, qd.e); exit(1); }
	194	return (g);
	195	}
	196
197	static ge getge(group g, const char *p) {
198	ge *x = G_CREATE(g);
199	if (group_readstring(g, x, p, 0)) {
200	fprintf(stderr, "bad group element `%s'\n", p);
201	exit(1);
202	}
203	return (x);
204	}
205
206	static void showge(group g, const char p, ge *x) {
207	fprintf(stderr, "*** %s = ", p); group_writefile(g, x, stderr);
208	putc('\n', stderr);
209	}
210
211	static void showmp(const char p, mp x, int r) {
45c0fd36	212	fprintf(stderr, "*** %s = ", p); mp_writefile(x, stderr, r);
e9026a0a	213	putc('\n', stderr);
	214	}
	215
	216	static int tsign(dstr *v)
	217	{
	218	gdsa c;
	219	gkcdsa_sig s, ss = GKCDSA_SIG_INIT;
	220	ghash *h;
	221	mp *k;
	222	dstr d = DSTR_INIT;
	223	mp *x;
	224	int ok = 1;
	225
	226	c.g = getgroup(v[0].buf); c.h = ghash_byname(v[1].buf);
	227	c.u = (mp )v[2].buf; k = (mp **)v[4].buf;
	228	s.r = (octet )v[5].buf; s.s = (mp **)v[6].buf;
	229	DENSURE(&d, c.h->hashsz); d.len = c.h->hashsz; memset(d.buf, 0, d.len);
	230	ss.r = (octet *)d.buf;
	231
b817bfc6	232	x = mp_modinv(MP_NEW, c.u, c.g->r);
e9026a0a	233	c.p = G_CREATE(c.g); G_EXP(c.g, c.p, c.g->g, x);
	234	h = gkcdsa_beginhash(&c);
	235	GH_HASH(h, v[3].buf, v[3].len);
	236	gkcdsa_endhash(&c, h);
	237	gkcdsa_sign(&c, &ss, GH_DONE(h, 0), k);
	238	if (memcmp(s.r, ss.r, c.h->hashsz) \|\| !MP_EQ(s.s, ss.s)) {
	239	ok = 0;
	240	fprintf(stderr, "*** sign failed!\n");
	241	fprintf(stderr, "*** group: %s\n", v[0].buf);
	242	fprintf(stderr, "*** hash: %s\n", c.h->name);
	243	showmp("private key", c.u, 16);
	244	showge(c.g, "public key", c.p);
	245	fprintf(stderr, "*** message: `%s'\n", v[3].buf);
	246	fprintf(stderr, "*** computed r = ");
	247	type_hex.dump(&d, stderr); putc('\n', stderr);
	248	showmp("computed s", ss.s, 16);
	249	fprintf(stderr, "*** computed r = ");
	250	type_hex.dump(&v[5], stderr); putc('\n', stderr);
	251	showmp("expected s", s.s, 16);
	252	}
	253	mp_drop(s.s); dstr_destroy(&d); mp_drop(ss.s); mp_drop(x); mp_drop(k);
	254	mp_drop(c.u); G_DESTROY(c.g, c.p); G_DESTROYGROUP(c.g); GH_DESTROY(h);
	255	assert(mparena_count(MPARENA_GLOBAL) == 0);
	256	return (ok);
	257	}
	258
	259	static int tverify(dstr *v)
	260	{
	261	gkcdsa c;
	262	gkcdsa_sig s;
	263	ghash *h;
	264	int rc, erc;
	265	int ok = 1;
	266
	267	c.g = getgroup(v[0].buf); c.h = ghash_byname(v[1].buf);
	268	c.p = getge(c.g, v[2].buf);
	269	s.r = (octet )v[4].buf; s.s = (mp **)v[5].buf;
	270	erc = (int )v[6].buf;
	271
	272	h = gkcdsa_beginhash(&c);
	273	GH_HASH(h, v[3].buf, v[3].len);
	274	gkcdsa_endhash(&c, h);
	275	rc = gkcdsa_verify(&c, &s, GH_DONE(h, 0));
	276	if (!rc != !erc) {
	277	ok = 0;
	278	fprintf(stderr, "*** verify failed!\n");
	279	fprintf(stderr, "*** group: %s\n", v[0].buf);
	280	fprintf(stderr, "*** hash: %s\n", c.h->name);
	281	showge(c.g, "public key", c.p);
	282	fprintf(stderr, "*** message: `%s'\n", v[3].buf);
	283	fprintf(stderr, "*** sig r = ");
	284	type_hex.dump(&v[4], stderr); putc('\n', stderr);
	285	showmp("sig s", s.s, 16);
	286	fprintf(stderr, "*** expected %s\n", !erc ? "pass" : "fail");
	287	}
	288	mp_drop(s.s); G_DESTROY(c.g, c.p); G_DESTROYGROUP(c.g);
	289	GH_DESTROY(h);
	290	assert(mparena_count(MPARENA_GLOBAL) == 0);
	291	return (ok);
	292	}
	293
	294	static const test_chunk tests[] = {
	295	{ "sign", tsign, { &type_string, &type_string, &type_mp, &type_string,
	296	&type_mp, &type_hex, &type_mp } },
297	{ "verify", tverify, { &type_string, &type_string, &type_string,
298	&type_string, &type_hex, &type_mp, &type_int } },
299	{ 0 }
300	};
301
302	int main(int argc, char *argv[])
303	{
304	sub_init();
305	test_run(argc, argv, tests, SRCDIR "/tests/gkcdsa");
306	return (0);
307	}
308
309	#endif
310
311	/----- That's all, folks -------------------------------------------------/