145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/* curves.c - ECC curves regression tests
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* Copyright (C) 2011 Free Software Foundation, Inc.
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include "../src/gcrypt-int.h"
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#define PGM "curves"
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#include "t-common.h"
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/* Number of curves defined in ../cipger/ecc.c */
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#define N_CURVES 14
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/* A real world sample public key. */
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static char const sample_key_1[] =
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"(public-key\n"
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" (ecdsa\n"
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" (p #00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF#)\n"
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" (a #00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC#)\n"
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" (b #5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B#)\n"
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" (g #046B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296"
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"4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5#)\n"
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" (n #00FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551#)\n"
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" (h #000000000000000000000000000000000000000000000000000000000000000001#)\n"
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" (q #0442B927242237639A36CE9221B340DB1A9AB76DF2FE3E171277F6A4023DED146EE"
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"86525E38CCECFF3FB8D152CC6334F70D23A525175C1BCBDDE6E023B2228770E#)\n"
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" ))";
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static char const sample_key_1_curve[] = "NIST P-256";
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static unsigned int sample_key_1_nbits = 256;
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static void
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list_curves (void)
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{
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int idx;
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const char *name;
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unsigned int nbits;
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for (idx=0; (name = gcry_pk_get_curve (NULL, idx, &nbits)); idx++)
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{
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if (verbose)
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printf ("%s - %u bits\n", name, nbits);
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}
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if (idx != N_CURVES)
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fail ("expected %d curves but got %d\n", N_CURVES, idx);
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if (gcry_pk_get_curve (NULL, -1, NULL))
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fail ("curve iteration failed\n");
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}
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static void
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check_matching (void)
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{
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gpg_error_t err;
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gcry_sexp_t key;
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const char *name;
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unsigned int nbits;
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err = gcry_sexp_new (&key, sample_key_1, 0, 1);
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if (err)
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die ("parsing s-expression string failed: %s\n", gpg_strerror (err));
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name = gcry_pk_get_curve (key, 0, &nbits);
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if (!name)
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fail ("curve name not found for sample_key_1\n");
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else if (strcmp (name, sample_key_1_curve))
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fail ("expected curve name %s but got %s for sample_key_1\n",
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sample_key_1_curve, name);
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else if (nbits != sample_key_1_nbits)
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fail ("expected curve size %u but got %u for sample_key_1\n",
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sample_key_1_nbits, nbits);
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gcry_sexp_release (key);
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}
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static void
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check_get_params (void)
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{
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gcry_sexp_t param;
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const char *name;
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param = gcry_pk_get_param (GCRY_PK_ECDSA, sample_key_1_curve);
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if (!param)
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fail ("error gerring parameters for `%s'\n", sample_key_1_curve);
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name = gcry_pk_get_curve (param, 0, NULL);
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if (!name)
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fail ("get_param: curve name not found for sample_key_1\n");
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else if (strcmp (name, sample_key_1_curve))
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fail ("get_param: expected curve name %s but got %s for sample_key_1\n",
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sample_key_1_curve, name);
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gcry_sexp_release (param);
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}
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int
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main (int argc, char **argv)
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{
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if (argc > 1 && !strcmp (argv[1], "--verbose"))
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verbose = 1;
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else if (argc > 1 && !strcmp (argv[1], "--debug"))
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verbose = debug = 1;
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if (!gcry_check_version (GCRYPT_VERSION))
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die ("version mismatch\n");
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xgcry_control (GCRYCTL_DISABLE_SECMEM, 0);
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xgcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
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if (debug)
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xgcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
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list_curves ();
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check_matching ();
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check_get_params ();
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return error_count ? 1 : 0;
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}
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