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Diffstat (limited to 'comm/third_party/libgcrypt/tests/t-x448.c')
-rw-r--r--comm/third_party/libgcrypt/tests/t-x448.c593
1 files changed, 593 insertions, 0 deletions
diff --git a/comm/third_party/libgcrypt/tests/t-x448.c b/comm/third_party/libgcrypt/tests/t-x448.c
new file mode 100644
index 0000000000..5c3cbeb998
--- /dev/null
+++ b/comm/third_party/libgcrypt/tests/t-x448.c
@@ -0,0 +1,593 @@
+/* t-x448.c - Check the X488 computation
+ * Copyright (C) 2019 g10 Code GmbH
+ *
+ * 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdarg.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "stopwatch.h"
+
+#define PGM "t-x448"
+#include "t-common.h"
+#define N_TESTS 9
+
+
+static void
+print_mpi (const char *text, gcry_mpi_t a)
+{
+ gcry_error_t err;
+ char *buf;
+ void *bufaddr = &buf;
+
+ err = gcry_mpi_aprint (GCRYMPI_FMT_HEX, bufaddr, NULL, a);
+ if (err)
+ fprintf (stderr, "%s: [error printing number: %s]\n",
+ text, gpg_strerror (err));
+ else
+ {
+ fprintf (stderr, "%s: %s\n", text, buf);
+ gcry_free (buf);
+ }
+}
+
+
+static void
+show_note (const char *format, ...)
+{
+ va_list arg_ptr;
+
+ if (!verbose && getenv ("srcdir"))
+ fputs (" ", stderr); /* To align above "PASS: ". */
+ else
+ fprintf (stderr, "%s: ", PGM);
+ va_start (arg_ptr, format);
+ vfprintf (stderr, format, arg_ptr);
+ if (*format && format[strlen(format)-1] != '\n')
+ putc ('\n', stderr);
+ va_end (arg_ptr);
+}
+
+
+/* Convert STRING consisting of hex characters into its binary
+ representation and return it as an allocated buffer. The valid
+ length of the buffer is returned at R_LENGTH. The string is
+ delimited by end of string. The function returns NULL on
+ error. */
+static void *
+hex2buffer (const char *string, size_t *r_length)
+{
+ const char *s;
+ unsigned char *buffer;
+ size_t length;
+
+ buffer = xmalloc (strlen(string)/2+1);
+ length = 0;
+ for (s=string; *s; s +=2 )
+ {
+ if (!hexdigitp (s) || !hexdigitp (s+1))
+ return NULL; /* Invalid hex digits. */
+ ((unsigned char*)buffer)[length++] = xtoi_2 (s);
+ }
+ *r_length = length;
+ return buffer;
+}
+
+static void
+reverse_buffer (unsigned char *buffer, unsigned int length)
+{
+ unsigned int tmp, i;
+
+ for (i=0; i < length/2; i++)
+ {
+ tmp = buffer[i];
+ buffer[i] = buffer[length-1-i];
+ buffer[length-1-i] = tmp;
+ }
+}
+
+
+/*
+ * Test X448 functionality through higher layer crypto routines.
+ *
+ * Input: K (as hex string), U (as hex string), R (as hex string)
+ *
+ * where R is expected result of X448 (K, U).
+ *
+ */
+static void
+test_cv_hl (int testno, const char *k_str, const char *u_str,
+ const char *result_str)
+{
+ gpg_error_t err;
+ void *buffer = NULL;
+ size_t buflen;
+ gcry_sexp_t s_pk = NULL;
+ gcry_mpi_t mpi_k = NULL;
+ gcry_sexp_t s_data = NULL;
+ gcry_sexp_t s_result = NULL;
+ gcry_sexp_t s_tmp = NULL;
+ unsigned char *res = NULL;
+ size_t res_len;
+
+ if (verbose > 1)
+ info ("Running test %d\n", testno);
+
+ if (!(buffer = hex2buffer (k_str, &buflen)) || buflen != 56)
+ {
+ fail ("error building s-exp for test %d, %s: %s",
+ testno, "k", "invalid hex string");
+ goto leave;
+ }
+
+ mpi_k = gcry_mpi_set_opaque (NULL, buffer, buflen*8);
+ if ((err = gcry_sexp_build (&s_data, NULL, "%m", mpi_k)))
+ {
+ fail ("error building s-exp for test %d, %s: %s",
+ testno, "data", gpg_strerror (err));
+ goto leave;
+ }
+
+ if (!(buffer = hex2buffer (u_str, &buflen)) || buflen != 56)
+ {
+ fail ("error building s-exp for test %d, %s: %s",
+ testno, "u", "invalid hex string");
+ goto leave;
+ }
+
+ /*
+ * The procedure of decodeUCoordinate will be done internally
+ * by _gcry_ecc_mont_decodepoint. So, we just put the little-endian
+ * binary to build S-exp.
+ *
+ * We could add the prefix 0x40, but libgcrypt also supports
+ * format with no prefix. So, it is OK not to put the prefix.
+ */
+ if ((err = gcry_sexp_build (&s_pk, NULL,
+ "(public-key"
+ " (ecc"
+ " (curve \"X448\")"
+ " (q%b)))", (int)buflen, buffer)))
+ {
+ fail ("error building s-exp for test %d, %s: %s",
+ testno, "pk", gpg_strerror (err));
+ goto leave;
+ }
+
+ xfree (buffer);
+ buffer = NULL;
+
+ if ((err = gcry_pk_encrypt (&s_result, s_data, s_pk)))
+ fail ("gcry_pk_encrypt failed for test %d: %s", testno,
+ gpg_strerror (err));
+
+ s_tmp = gcry_sexp_find_token (s_result, "s", 0);
+ if (!s_tmp || !(res = gcry_sexp_nth_buffer (s_tmp, 1, &res_len)))
+ fail ("gcry_pk_encrypt failed for test %d: %s", testno, "missing value");
+ else
+ {
+ char *r, *r0;
+ int i;
+
+ r0 = r = xmalloc (2*(res_len)+1);
+ if (!r0)
+ {
+ fail ("memory allocation for test %d", testno);
+ goto leave;
+ }
+
+ for (i=0; i < res_len; i++, r += 2)
+ snprintf (r, 3, "%02x", res[i]);
+ if (strcmp (result_str, r0))
+ {
+ fail ("gcry_pk_encrypt failed for test %d: %s",
+ testno, "wrong value returned");
+ info (" expected: '%s'", result_str);
+ info (" got: '%s'", r0);
+ }
+ xfree (r0);
+ }
+
+ leave:
+ xfree (res);
+ gcry_mpi_release (mpi_k);
+ gcry_sexp_release (s_tmp);
+ gcry_sexp_release (s_result);
+ gcry_sexp_release (s_data);
+ gcry_sexp_release (s_pk);
+ xfree (buffer);
+}
+
+/*
+ * Test X448 functionality through the API for X448.
+ *
+ * Input: K (as hex string), U (as hex string), R (as hex string)
+ *
+ * where R is expected result of X448 (K, U).
+ *
+ */
+static void
+test_cv_x448 (int testno, const char *k_str, const char *u_str,
+ const char *result_str)
+{
+ gpg_error_t err;
+ void *scalar;
+ void *point = NULL;
+ size_t buflen;
+ unsigned char result[56];
+ char result_hex[113];
+ int i;
+
+ if (verbose > 1)
+ info ("Running test %d\n", testno);
+
+ if (!(scalar = hex2buffer (k_str, &buflen)) || buflen != 56)
+ {
+ fail ("error building s-exp for test %d, %s: %s",
+ testno, "k", "invalid hex string");
+ goto leave;
+ }
+
+ if (!(point = hex2buffer (u_str, &buflen)) || buflen != 56)
+ {
+ fail ("error building s-exp for test %d, %s: %s",
+ testno, "u", "invalid hex string");
+ goto leave;
+ }
+
+ if ((err = gcry_ecc_mul_point (GCRY_ECC_CURVE448, result, scalar, point)))
+ fail ("gcry_ecc_mul_point failed for test %d: %s", testno,
+ gpg_strerror (err));
+
+ for (i=0; i < 56; i++)
+ snprintf (&result_hex[i*2], 3, "%02x", result[i]);
+
+ if (strcmp (result_str, result_hex))
+ {
+ fail ("gcry_ecc_mul_point failed for test %d: %s",
+ testno, "wrong value returned");
+ info (" expected: '%s'", result_str);
+ info (" got: '%s'", result_hex);
+ }
+
+ leave:
+ xfree (scalar);
+ xfree (point);
+}
+
+static void
+test_cv (int testno, const char *k_str, const char *u_str,
+ const char *result_str)
+{
+ test_cv_hl (testno, k_str, u_str, result_str);
+ test_cv_x448 (testno, k_str, u_str, result_str);
+}
+
+/*
+ * Test iterative X448 computation through lower layer MPI routines.
+ *
+ * Input: K (as hex string), ITER, R (as hex string)
+ *
+ * where R is expected result of iterating X448 by ITER times.
+ *
+ */
+static void
+test_it (int testno, const char *k_str, int iter, const char *result_str)
+{
+ gcry_ctx_t ctx;
+ gpg_error_t err;
+ void *buffer = NULL;
+ size_t buflen;
+ gcry_mpi_t mpi_k = NULL;
+ gcry_mpi_t mpi_x = NULL;
+ gcry_mpi_point_t P = NULL;
+ gcry_mpi_point_t Q;
+ int i;
+ gcry_mpi_t mpi_kk = NULL;
+
+ if (verbose > 1)
+ info ("Running test %d: iteration=%d\n", testno, iter);
+
+ gcry_mpi_ec_new (&ctx, NULL, "X448");
+ Q = gcry_mpi_point_new (0);
+
+ if (!(buffer = hex2buffer (k_str, &buflen)) || buflen != 56)
+ {
+ fail ("error scanning MPI for test %d, %s: %s",
+ testno, "k", "invalid hex string");
+ goto leave;
+ }
+ reverse_buffer (buffer, buflen);
+ if ((err = gcry_mpi_scan (&mpi_x, GCRYMPI_FMT_USG, buffer, buflen, NULL)))
+ {
+ fail ("error scanning MPI for test %d, %s: %s",
+ testno, "x", gpg_strerror (err));
+ goto leave;
+ }
+
+ xfree (buffer);
+ buffer = NULL;
+
+ P = gcry_mpi_point_set (NULL, mpi_x, NULL, GCRYMPI_CONST_ONE);
+
+ mpi_k = gcry_mpi_copy (mpi_x);
+ if (debug)
+ print_mpi ("k", mpi_k);
+
+ for (i = 0; i < iter; i++)
+ {
+ /*
+ * Another variant of decodeScalar448 thing.
+ */
+ mpi_kk = gcry_mpi_set (mpi_kk, mpi_k);
+ gcry_mpi_set_bit (mpi_kk, 447);
+ gcry_mpi_clear_bit (mpi_kk, 0);
+ gcry_mpi_clear_bit (mpi_kk, 1);
+
+ gcry_mpi_ec_mul (Q, mpi_kk, P, ctx);
+
+ P = gcry_mpi_point_set (P, mpi_k, NULL, GCRYMPI_CONST_ONE);
+ gcry_mpi_ec_get_affine (mpi_k, NULL, Q, ctx);
+
+ if (debug)
+ print_mpi ("k", mpi_k);
+ }
+
+ {
+ unsigned char res[56];
+ char *r, *r0;
+
+ gcry_mpi_print (GCRYMPI_FMT_USG, res, 56, NULL, mpi_k);
+ reverse_buffer (res, 56);
+
+ r0 = r = xmalloc (113);
+ if (!r0)
+ {
+ fail ("memory allocation for test %d", testno);
+ goto leave;
+ }
+
+ for (i=0; i < 56; i++, r += 2)
+ snprintf (r, 3, "%02x", res[i]);
+
+ if (strcmp (result_str, r0))
+ {
+ fail ("X448 failed for test %d: %s",
+ testno, "wrong value returned");
+ info (" expected: '%s'", result_str);
+ info (" got: '%s'", r0);
+ }
+ xfree (r0);
+ }
+
+ leave:
+ gcry_mpi_release (mpi_kk);
+ gcry_mpi_release (mpi_k);
+ gcry_mpi_point_release (P);
+ gcry_mpi_release (mpi_x);
+ xfree (buffer);
+ gcry_mpi_point_release (Q);
+ gcry_ctx_release (ctx);
+}
+
+/*
+ * X-coordinate of generator of the X448.
+ */
+#define G_X ("0500000000000000000000000000000000000000000000000000000000000000" \
+ "000000000000000000000000000000000000000000000000")
+
+/*
+ * Test Diffie-Hellman in RFC-7748.
+ *
+ * Note that it's not like the ECDH of OpenPGP, where we use
+ * ephemeral public key.
+ */
+static void
+test_dh (int testno, const char *a_priv_str, const char *a_pub_str,
+ const char *b_priv_str, const char *b_pub_str,
+ const char *result_str)
+{
+ /* Test A for private key corresponds to public key. */
+ test_cv (testno, a_priv_str, G_X, a_pub_str);
+ /* Test B for private key corresponds to public key. */
+ test_cv (testno, b_priv_str, G_X, b_pub_str);
+ /* Test DH with A's private key and B's public key. */
+ test_cv (testno, a_priv_str, b_pub_str, result_str);
+ /* Test DH with B's private key and A's public key. */
+ test_cv (testno, b_priv_str, a_pub_str, result_str);
+}
+
+
+static void
+check_x448 (void)
+{
+ int ntests;
+
+ info ("Checking X448.\n");
+
+ ntests = 0;
+
+ /*
+ * Values are cited from RFC-7748: 5.2. Test Vectors.
+ * Following two tests are for the first type test.
+ */
+ test_cv (1,
+ "3d262fddf9ec8e88495266fea19a34d28882acef045104d0d1aae121"
+ "700a779c984c24f8cdd78fbff44943eba368f54b29259a4f1c600ad3",
+ "06fce640fa3487bfda5f6cf2d5263f8aad88334cbd07437f020f08f9"
+ "814dc031ddbdc38c19c6da2583fa5429db94ada18aa7a7fb4ef8a086",
+ "ce3e4ff95a60dc6697da1db1d85e6afbdf79b50a2412d7546d5f239f"
+ "e14fbaadeb445fc66a01b0779d98223961111e21766282f73dd96b6f");
+ ntests++;
+ test_cv (2,
+ "203d494428b8399352665ddca42f9de8fef600908e0d461cb021f8c5"
+ "38345dd77c3e4806e25f46d3315c44e0a5b4371282dd2c8d5be3095f",
+ "0fbcc2f993cd56d3305b0b7d9e55d4c1a8fb5dbb52f8e9a1e9b6201b"
+ "165d015894e56c4d3570bee52fe205e28a78b91cdfbde71ce8d157db",
+ "884a02576239ff7a2f2f63b2db6a9ff37047ac13568e1e30fe63c4a7"
+ "ad1b3ee3a5700df34321d62077e63633c575c1c954514e99da7c179d");
+ ntests++;
+
+ /*
+ * Additional test. Value is from second type test.
+ */
+ test_cv (3,
+ G_X,
+ G_X,
+ "3f482c8a9f19b01e6c46ee9711d9dc14fd4bf67af30765c2ae2b846a"
+ "4d23a8cd0db897086239492caf350b51f833868b9bc2b3bca9cf4113");
+ ntests++;
+
+ /*
+ * Following two tests are for the second type test,
+ * with one iteration and 1,000 iterations. (1,000,000 iterations
+ * takes too long.)
+ */
+ test_it (4,
+ G_X,
+ 1,
+ "3f482c8a9f19b01e6c46ee9711d9dc14fd4bf67af30765c2ae2b846a"
+ "4d23a8cd0db897086239492caf350b51f833868b9bc2b3bca9cf4113");
+ ntests++;
+
+ test_it (5,
+ G_X,
+ 1000,
+ "aa3b4749d55b9daf1e5b00288826c467274ce3ebbdd5c17b975e09d4"
+ "af6c67cf10d087202db88286e2b79fceea3ec353ef54faa26e219f38");
+ ntests++;
+
+ /*
+ * Last test is from: 6. Diffie-Hellman, 6.2. Curve448
+ */
+ test_dh (6,
+ /* Alice's private key, a */
+ "9a8f4925d1519f5775cf46b04b5800d4ee9ee8bae8bc5565d498c28d"
+ "d9c9baf574a9419744897391006382a6f127ab1d9ac2d8c0a598726b",
+ /* Alice's public key, X448(a, 5) */
+ "9b08f7cc31b7e3e67d22d5aea121074a273bd2b83de09c63faa73d2c"
+ "22c5d9bbc836647241d953d40c5b12da88120d53177f80e532c41fa0",
+ /* Bob's private key, b */
+ "1c306a7ac2a0e2e0990b294470cba339e6453772b075811d8fad0d1d"
+ "6927c120bb5ee8972b0d3e21374c9c921b09d1b0366f10b65173992d",
+ /* Bob's public key, X448(b, 5) */
+ "3eb7a829b0cd20f5bcfc0b599b6feccf6da4627107bdb0d4f345b430"
+ "27d8b972fc3e34fb4232a13ca706dcb57aec3dae07bdc1c67bf33609",
+ /* Their shared secret, K */
+ "07fff4181ac6cc95ec1c16a94a0f74d12da232ce40a77552281d282b"
+ "b60c0b56fd2464c335543936521c24403085d59a449a5037514a879d");
+ ntests++;
+
+ /* three tests which results 0. */
+ test_cv (7,
+ "3d262fddf9ec8e88495266fea19a34d28882acef045104d0d1aae121"
+ "700a779c984c24f8cdd78fbff44943eba368f54b29259a4f1c600ad3",
+ "00000000000000000000000000000000000000000000000000000000"
+ "00000000000000000000000000000000000000000000000000000000",
+ "00000000000000000000000000000000000000000000000000000000"
+ "00000000000000000000000000000000000000000000000000000000");
+ ntests++;
+
+ test_cv (8,
+ "3d262fddf9ec8e88495266fea19a34d28882acef045104d0d1aae121"
+ "700a779c984c24f8cdd78fbff44943eba368f54b29259a4f1c600ad3",
+ "01000000000000000000000000000000000000000000000000000000"
+ "00000000000000000000000000000000000000000000000000000000",
+ "00000000000000000000000000000000000000000000000000000000"
+ "00000000000000000000000000000000000000000000000000000000");
+ ntests++;
+
+ test_cv (9,
+ "3d262fddf9ec8e88495266fea19a34d28882acef045104d0d1aae121"
+ "700a779c984c24f8cdd78fbff44943eba368f54b29259a4f1c600ad3",
+ "feffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+ "feffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+ "00000000000000000000000000000000000000000000000000000000"
+ "00000000000000000000000000000000000000000000000000000000");
+ ntests++;
+
+ if (ntests != N_TESTS)
+ fail ("did %d tests but expected %d", ntests, N_TESTS);
+ else if ((ntests % 256))
+ show_note ("%d tests done\n", ntests);
+}
+
+
+int
+main (int argc, char **argv)
+{
+ int last_argc = -1;
+
+ if (argc)
+ { argc--; argv++; }
+
+ while (argc && last_argc != argc )
+ {
+ last_argc = argc;
+ if (!strcmp (*argv, "--"))
+ {
+ argc--; argv++;
+ break;
+ }
+ else if (!strcmp (*argv, "--help"))
+ {
+ fputs ("usage: " PGM " [options]\n"
+ "Options:\n"
+ " --verbose print timings etc.\n"
+ " --debug flyswatter\n",
+ stdout);
+ exit (0);
+ }
+ else if (!strcmp (*argv, "--verbose"))
+ {
+ verbose++;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--debug"))
+ {
+ verbose += 2;
+ debug++;
+ argc--; argv++;
+ }
+ else if (!strncmp (*argv, "--", 2))
+ die ("unknown option '%s'", *argv);
+ }
+
+ xgcry_control ((GCRYCTL_DISABLE_SECMEM, 0));
+ if (!gcry_check_version (GCRYPT_VERSION))
+ die ("version mismatch\n");
+ if (debug)
+ xgcry_control ((GCRYCTL_SET_DEBUG_FLAGS, 1u , 0));
+ xgcry_control ((GCRYCTL_ENABLE_QUICK_RANDOM, 0));
+ xgcry_control ((GCRYCTL_INITIALIZATION_FINISHED, 0));
+
+ start_timer ();
+ check_x448 ();
+ stop_timer ();
+
+ info ("All tests completed in %s. Errors: %d\n",
+ elapsed_time (1), error_count);
+ return !!error_count;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-11 13:39:54 +0000