diff options
Diffstat (limited to 'tests/curves.c')
| -rw-r--r-- | tests/curves.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/tests/curves.c b/tests/curves.c new file mode 100644 index 00000000..dcf501a4 --- /dev/null +++ b/tests/curves.c @@ -0,0 +1,175 @@ +/* curves.c - ECC curves regression tests + * Copyright (C) 2011 Free Software Foundation, Inc. + * + * This file is part of Libgcrypt. + * + * Libgcrypt is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * Libgcrypt 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> + +#include "../src/gcrypt.h" + +/* Number of curves defined in ../cipger/ecc.c */ +#define N_CURVES 12 + +/* A real world sample public key. */ +static char const sample_key_1[] = +"(public-key\n" +" (ecdsa\n" +" (p #00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF#)\n" +" (a #00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC#)\n" +" (b #5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B#)\n" +" (g #046B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296" + "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5#)\n" +" (n #00FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551#)\n" +" (q #0442B927242237639A36CE9221B340DB1A9AB76DF2FE3E171277F6A4023DED146EE" + "86525E38CCECFF3FB8D152CC6334F70D23A525175C1BCBDDE6E023B2228770E#)\n" +" ))"; +static char const sample_key_1_curve[] = "NIST P-256"; +static unsigned int sample_key_1_nbits = 256; + +/* A made up sample public key. */ +static char const sample_key_2[] = +"(public-key\n" +" (ecdh\n" +" (p #e95e4a5f737059dc60dfc7ad95b3d8139515620f#)\n" +" (a #340e7be2a280eb74e2be61bada745d97e8f7c300#)\n" +" (b #1e589a8595423412134faa2dbdec95c8d8675e58#)\n" +" (g #04bed5af16ea3f6a4f62938c4631eb5af7bdbcdbc3" + "1667cb477a1a8ec338f94741669c976316da6321#)\n" +" (n #e95e4a5f737059dc60df5991d45029409e60fc09#)\n" +" (q #041111111111111111111111111111111111111111" + "2222222222222222222222222222222222222222#)\n" +" ))"; +static char const sample_key_2_curve[] = "brainpoolP160r1"; +static unsigned int sample_key_2_nbits = 160; + + +/* Program option flags. */ +static int verbose; +static int error_count; + +static void +fail (const char *format, ...) +{ + va_list arg_ptr; + + va_start (arg_ptr, format); + vfprintf (stderr, format, arg_ptr); + va_end (arg_ptr); + error_count++; +} + +static void +die (const char *format, ...) +{ + va_list arg_ptr; + + va_start (arg_ptr, format); + vfprintf (stderr, format, arg_ptr); + va_end (arg_ptr); + exit (1); +} + + +static void +list_curves (void) +{ + int idx; + const char *name; + unsigned int nbits; + + for (idx=0; (name = gcry_pk_get_curve (NULL, idx, &nbits)); idx++) + { + if (verbose) + printf ("%s - %u bits\n", name, nbits); + } + if (idx != N_CURVES) + fail ("expected %d curves but got %d\n", N_CURVES, idx); + if (gcry_pk_get_curve (NULL, -1, NULL)) + fail ("curve iteration failed\n"); +} + + +static void +check_matching (void) +{ + gpg_error_t err; + gcry_sexp_t key; + const char *name; + unsigned int nbits; + + err = gcry_sexp_new (&key, sample_key_1, 0, 1); + if (err) + die ("parsing s-expression string failed: %s\n", gpg_strerror (err)); + name = gcry_pk_get_curve (key, 0, &nbits); + if (!name) + fail ("curve name not found for sample_key_1\n"); + else if (strcmp (name, sample_key_1_curve)) + fail ("expected curve name %s but got %s for sample_key_1\n", + sample_key_1_curve, name); + else if (nbits != sample_key_1_nbits) + fail ("expected curve size %u but got %u for sample_key_1\n", + sample_key_1_nbits, nbits); + + gcry_sexp_release (key); + + err = gcry_sexp_new (&key, sample_key_2, 0, 1); + if (err) + die ("parsing s-expression string failed: %s\n", gpg_strerror (err)); + name = gcry_pk_get_curve (key, 0, &nbits); + if (!name) + fail ("curve name not found for sample_key_2\n"); + else if (strcmp (name, sample_key_2_curve)) + fail ("expected curve name %s but got %s for sample_key_2\n", + sample_key_2_curve, name); + else if (nbits != sample_key_2_nbits) + fail ("expected curve size %u but got %u for sample_key_2\n", + sample_key_2_nbits, nbits); + + gcry_sexp_release (key); +} + + + +int +main (int argc, char **argv) +{ + int debug = 0; + + if (argc > 1 && !strcmp (argv[1], "--verbose")) + verbose = 1; + else if (argc > 1 && !strcmp (argv[1], "--debug")) + verbose = debug = 1; + + if (!gcry_check_version (GCRYPT_VERSION)) + die ("version mismatch\n"); + + gcry_control (GCRYCTL_DISABLE_SECMEM, 0); + gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0); + if (debug) + gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0); + list_curves (); + check_matching (); + + return error_count ? 1 : 0; +} |