761 lines
17 KiB
C
761 lines
17 KiB
C
/* $OpenBSD: bn_convert.c,v 1.6 2024/04/17 08:51:11 jsing Exp $ */
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/*
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* Copyright (c) 2023 Joel Sing <jsing@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <err.h>
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#include <string.h>
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#include <openssl/bn.h>
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/*
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* Additional test coverage is needed for:
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*
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* - BN_bn2binpad()
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* - BN_bn2lebinpad()
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* - BN_print()/BN_print_fp()
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*
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* - Invalid inputs to {asc,dec,hex,mpi}2bn
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* - Zero padded inputs
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*/
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static void
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hexdump(const unsigned char *buf, size_t len)
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{
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size_t i;
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for (i = 1; i <= len; i++)
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fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n");
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fprintf(stderr, "\n");
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}
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static int
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check_bin_output(size_t test_no, const char *label, const uint8_t *bin,
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size_t bin_len, const BIGNUM *bn)
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{
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uint8_t *out = NULL;
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int out_len;
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int ret;
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int failed = 1;
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out_len = BN_num_bytes(bn);
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if (out_len != (int)bin_len) {
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fprintf(stderr, "FAIL: Test %zu %s - BN_num_bytes() = %d, "
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"want %zu\n", test_no, label, out_len, bin_len);
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goto failure;
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}
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if ((out = malloc(out_len)) == NULL)
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err(1, "malloc");
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if ((ret = BN_bn2bin(bn, out)) != out_len) {
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fprintf(stderr, "FAIL: Test %zu %s - BN_bn2bin() returned %d, "
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"want %d\n", test_no, label, ret, out_len);
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goto failure;
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}
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if (memcmp(out, bin, bin_len) != 0) {
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fprintf(stderr, "FAIL: Test %zu %s - output from "
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"BN_bn2bin() differs\n", test_no, label);
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fprintf(stderr, "Got:\n");
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hexdump(out, out_len);
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fprintf(stderr, "Want:\n");
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hexdump(bin, bin_len);
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goto failure;
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}
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failed = 0;
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failure:
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free(out);
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return failed;
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}
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struct bn_asc2bn_test {
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const char *in;
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const uint8_t bin[64];
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size_t bin_len;
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int neg;
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int want_error;
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};
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static const struct bn_asc2bn_test bn_asc2bn_tests[] = {
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{
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.in = "",
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.want_error = 1,
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},
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{
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.in = "-",
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.want_error = 1,
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},
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{
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.in = "0",
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.bin = { 0x00, },
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.bin_len = 0,
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.neg = 0,
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},
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{
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.in = "0x0",
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.bin = { 0x00, },
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.bin_len = 0,
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.neg = 0,
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},
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{
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.in = "-0",
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.bin = { 0x00, },
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.bin_len = 0,
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.neg = 0,
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},
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{
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.in = "-0x0",
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.bin = { 0x00, },
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.bin_len = 0,
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.neg = 0,
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},
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{
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.in = "123456789",
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.bin = { 0x07, 0x5b, 0xcd, 0x15, },
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.bin_len = 4,
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.neg = 0,
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},
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{
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.in = "0123456789",
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.bin = { 0x07, 0x5b, 0xcd, 0x15, },
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.bin_len = 4,
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.neg = 0,
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},
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{
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.in = "-123456789",
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.bin = { 0x07, 0x5b, 0xcd, 0x15, },
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.bin_len = 4,
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.neg = 1,
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},
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{
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.in = "0X123456789",
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.bin = { 0x01, 0x23, 0x45, 0x67, 0x89, },
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.bin_len = 5,
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.neg = 0,
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},
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{
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.in = "0x123456789",
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.bin = { 0x01, 0x23, 0x45, 0x67, 0x89, },
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.bin_len = 5,
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.neg = 0,
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},
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{
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.in = "-0x123456789",
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.bin = { 0x01, 0x23, 0x45, 0x67, 0x89, },
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.bin_len = 5,
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.neg = 1,
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},
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{
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.in = "abcdef123456789",
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.want_error = 1,
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},
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{
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.in = "0x000123456789abCdEf",
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.bin = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef },
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.bin_len = 8,
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.neg = 0,
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},
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};
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#define N_BN_ASC2BN_TESTS \
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(sizeof(bn_asc2bn_tests) / sizeof(*bn_asc2bn_tests))
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static int
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test_bn_asc2bn(void)
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{
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const struct bn_asc2bn_test *bat;
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BIGNUM *bn = NULL;
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size_t i;
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int failed = 1;
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for (i = 0; i < N_BN_ASC2BN_TESTS; i++) {
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bat = &bn_asc2bn_tests[i];
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BN_free(bn);
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bn = NULL;
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if (!BN_asc2bn(&bn, bat->in)) {
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if (bat->want_error)
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continue;
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fprintf(stderr, "FAIL: Test %zu - BN_asc2bn() failed\n", i);
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goto failure;
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}
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if (bat->want_error) {
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fprintf(stderr, "FAIL: Test %zu - BN_asc2bn() succeeded "
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"when it should have failed\n", i);
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goto failure;
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}
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if (check_bin_output(i, "BN_asc2bn()", bat->bin, bat->bin_len,
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bn) != 0)
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goto failure;
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if (BN_is_negative(bn) != bat->neg) {
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fprintf(stderr, "FAIL: Test %zu - BN_asc2bn() resulted "
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"in negative %d, want %d", i, BN_is_negative(bn),
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bat->neg);
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goto failure;
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}
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}
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/*
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* While it makes little sense to call BN_asc2bn() with a NULL bn,
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* check for consistent behavior.
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*/
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if (!BN_asc2bn(NULL, "1") || !BN_asc2bn(NULL, "-1") ||
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!BN_asc2bn(NULL, "0x1") || !BN_asc2bn(NULL, "-0x1")) {
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fprintf(stderr, "FAIL: BN_asc2bn() with NULL BIGNUM failed\n");
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goto failure;
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}
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failed = 0;
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failure:
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BN_free(bn);
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return failed;
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}
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struct bn_convert_test {
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const uint8_t bin[64];
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size_t bin_len;
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int neg;
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const char *dec;
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const char *hex;
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const uint8_t mpi[64];
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int mpi_len;
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};
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static const struct bn_convert_test bn_convert_tests[] = {
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{
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.bin = { 0x0, },
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.bin_len = 0,
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.neg = 0,
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.dec = "0",
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.hex = "0",
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.mpi = { 0x00, 0x00, 0x00, 0x00, },
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.mpi_len = 4,
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},
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{
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.bin = { 0x1, },
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.bin_len = 1,
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.neg = 0,
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.dec = "1",
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.hex = "01",
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.mpi = { 0x00, 0x00, 0x00, 0x01, 0x01, },
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.mpi_len = 5,
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},
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{
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.bin = { 0x1, },
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.bin_len = 1,
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.neg = 1,
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.dec = "-1",
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.hex = "-01",
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.mpi = { 0x00, 0x00, 0x00, 0x01, 0x81, },
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.mpi_len = 5,
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},
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{
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.bin = { 0x7f, 0xff, 0xff, },
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.bin_len = 3,
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.neg = 0,
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.dec = "8388607",
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.hex = "7FFFFF",
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.mpi = { 0x00, 0x00, 0x00, 0x03, 0x7f, 0xff, 0xff },
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.mpi_len = 7,
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},
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{
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.bin = { 0x7f, 0xff, 0xff, },
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.bin_len = 3,
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.neg = 1,
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.dec = "-8388607",
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.hex = "-7FFFFF",
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.mpi = { 0x00, 0x00, 0x00, 0x03, 0xff, 0xff, 0xff },
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.mpi_len = 7,
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},
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{
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.bin = { 0xff, 0xff, 0xff, 0xff, },
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.bin_len = 4,
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.neg = 0,
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.dec = "4294967295",
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.hex = "FFFFFFFF",
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.mpi = {
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0x00, 0x00, 0x00, 0x05, 0x00, 0xff, 0xff, 0xff,
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0xff,
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},
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.mpi_len = 9,
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},
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{
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.bin = { 0xff, 0xff, 0xff, 0xff, },
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.bin_len = 4,
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.neg = 1,
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.dec = "-4294967295",
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.hex = "-FFFFFFFF",
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.mpi = {
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0x00, 0x00, 0x00, 0x05, 0x80, 0xff, 0xff, 0xff,
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0xff,
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},
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.mpi_len = 9,
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},
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{
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.bin = { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, },
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.bin_len = 8,
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.neg = 0,
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.dec = "18446744069414584320",
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.hex = "FFFFFFFF00000000",
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.mpi = {
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0x00, 0x00, 0x00, 0x09, 0x00, 0xff, 0xff, 0xff,
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0xff, 0x00, 0x00, 0x00, 0x00,
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},
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.mpi_len = 13,
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},
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{
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.bin = { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, },
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.bin_len = 8,
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.neg = 1,
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.dec = "-18446744069414584320",
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.hex = "-FFFFFFFF00000000",
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.mpi = {
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0x00, 0x00, 0x00, 0x09, 0x80, 0xff, 0xff, 0xff,
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0xff, 0x00, 0x00, 0x00, 0x00,
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},
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.mpi_len = 13,
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},
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{
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.bin = { 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, },
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.bin_len = 8,
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.neg = 0,
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.dec = "9223794255762391041",
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.hex = "8001800180018001",
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.mpi = {
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0x00, 0x00, 0x00, 0x09, 0x00, 0x80, 0x01, 0x80,
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0x01, 0x80, 0x01, 0x80, 0x01,
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},
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.mpi_len = 13,
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},
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{
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.bin = { 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, },
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.bin_len = 8,
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.neg = 1,
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.dec = "-9223794255762391041",
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.hex = "-8001800180018001",
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.mpi = {
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0x00, 0x00, 0x00, 0x09, 0x80, 0x80, 0x01, 0x80,
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0x01, 0x80, 0x01, 0x80, 0x01,
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},
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.mpi_len = 13,
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},
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{
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.bin = {
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0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80,
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0x01,
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},
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.bin_len = 9,
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.neg = 0,
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.dec = "27670538329471942657",
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.hex = "018001800180018001",
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.mpi = {
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0x00, 0x00, 0x00, 0x09, 0x01, 0x80, 0x01, 0x80,
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0x01, 0x80, 0x01, 0x80, 0x01,
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},
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.mpi_len = 13,
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},
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{
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.bin = {
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0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80,
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0x01,
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},
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.bin_len = 9,
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.neg = 1,
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.dec = "-27670538329471942657",
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.hex = "-018001800180018001",
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.mpi = {
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0x00, 0x00, 0x00, 0x09, 0x81, 0x80, 0x01, 0x80,
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0x01, 0x80, 0x01, 0x80, 0x01,
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},
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.mpi_len = 13,
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},
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{
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.bin = {
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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},
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.bin_len = 32,
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.neg = 0,
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.dec = "57895161181645529494837117048595051142566530671229791132691030063130991362047",
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.hex = "7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF",
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.mpi = {
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0x00, 0x00, 0x00, 0x20, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff,
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},
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.mpi_len = 36,
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},
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{
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.bin = {
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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},
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.bin_len = 32,
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.neg = 1,
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.dec = "-57895161181645529494837117048595051142566530671229791132691030063130991362047",
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.hex = "-7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF7FFF",
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.mpi = {
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0x00, 0x00, 0x00, 0x20, 0xff, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff,
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0x7f, 0xff, 0x7f, 0xff,
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},
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.mpi_len = 36,
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},
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};
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#define N_BN_CONVERT_TESTS \
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(sizeof(bn_convert_tests) / sizeof(*bn_convert_tests))
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static int
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test_bn_convert(void)
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{
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const struct bn_convert_test *bct;
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uint8_t *mpi_out = NULL;
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char *out_str = NULL;
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uint8_t lebin[64];
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BIGNUM *bn = NULL;
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int mpi_len;
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size_t i, j;
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int failed = 1;
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for (i = 0; i < N_BN_CONVERT_TESTS; i++) {
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bct = &bn_convert_tests[i];
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BN_free(bn);
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if ((bn = BN_bin2bn(bct->bin, bct->bin_len, NULL)) == NULL) {
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fprintf(stderr, "FAIL: BN_bin2bn() failed\n");
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goto failure;
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}
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BN_set_negative(bn, bct->neg);
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if (check_bin_output(i, "BN_bin2bn()", bct->bin, bct->bin_len,
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bn) != 0)
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goto failure;
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for (j = 0; j < bct->bin_len; j++)
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lebin[j] = bct->bin[bct->bin_len - j - 1];
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BN_free(bn);
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if ((bn = BN_lebin2bn(lebin, bct->bin_len, NULL)) == NULL) {
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fprintf(stderr, "FAIL: BN_lebin2bn() failed\n");
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goto failure;
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}
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BN_set_negative(bn, bct->neg);
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if (check_bin_output(i, "BN_lebin2bn()", bct->bin, bct->bin_len,
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bn) != 0)
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goto failure;
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free(out_str);
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if ((out_str = BN_bn2dec(bn)) == NULL) {
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fprintf(stderr, "FAIL: BN_bn2dec() failed\n");
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goto failure;
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}
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if (strcmp(out_str, bct->dec) != 0) {
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|
fprintf(stderr, "FAIL: Test %zu - BN_bn2dec() returned "
|
|
"'%s', want '%s'", i, out_str, bct->dec);
|
|
goto failure;
|
|
}
|
|
|
|
free(out_str);
|
|
if ((out_str = BN_bn2hex(bn)) == NULL) {
|
|
fprintf(stderr, "FAIL: BN_bn2hex() failed\n");
|
|
goto failure;
|
|
}
|
|
if (strcmp(out_str, bct->hex) != 0) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_bn2hex() returned "
|
|
"'%s', want '%s'", i, out_str, bct->hex);
|
|
goto failure;
|
|
}
|
|
|
|
free(mpi_out);
|
|
mpi_out = NULL;
|
|
|
|
if ((mpi_len = BN_bn2mpi(bn, NULL)) != bct->mpi_len) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_bn2mpi() returned "
|
|
"%d, want %d", i, mpi_len, bct->mpi_len);
|
|
goto failure;
|
|
}
|
|
if ((mpi_out = calloc(1, bct->mpi_len)) == NULL)
|
|
goto failure;
|
|
if ((mpi_len = BN_bn2mpi(bn, mpi_out)) != bct->mpi_len) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_bn2mpi() returned "
|
|
"%d, want %d", i, mpi_len, bct->mpi_len);
|
|
goto failure;
|
|
}
|
|
if (memcmp(mpi_out, bct->mpi, bct->mpi_len) != 0) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_bn2mpi() "
|
|
"generated:\n", i);
|
|
hexdump(mpi_out, bct->mpi_len);
|
|
fprintf(stderr, "Want:\n");
|
|
hexdump(bct->mpi, bct->mpi_len);
|
|
goto failure;
|
|
}
|
|
|
|
if (BN_dec2bn(&bn, bct->dec) != (int)strlen(bct->dec)) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn() failed\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn) != bct->neg) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_dec2bn() resulted "
|
|
"in negative %d, want %d", i, BN_is_negative(bn),
|
|
bct->neg);
|
|
goto failure;
|
|
}
|
|
if (check_bin_output(i, "BN_dec2bn()", bct->bin, bct->bin_len,
|
|
bn) != 0)
|
|
goto failure;
|
|
|
|
if (BN_hex2bn(&bn, bct->hex) != (int)strlen(bct->hex)) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn() failed\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn) != bct->neg) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_hex2bn() resulted "
|
|
"in negative %d, want %d", i, BN_is_negative(bn),
|
|
bct->neg);
|
|
goto failure;
|
|
}
|
|
if (check_bin_output(i, "BN_hex2bn()", bct->bin, bct->bin_len,
|
|
bn) != 0)
|
|
goto failure;
|
|
|
|
if (BN_mpi2bn(bct->mpi, bct->mpi_len, bn) == NULL) {
|
|
fprintf(stderr, "FAIL: BN_mpi2bn() failed\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn) != bct->neg) {
|
|
fprintf(stderr, "FAIL: Test %zu - BN_mpi2bn() resulted "
|
|
"in negative %d, want %d", i, BN_is_negative(bn),
|
|
bct->neg);
|
|
goto failure;
|
|
}
|
|
if (check_bin_output(i, "BN_mpi2bn()", bct->bin, bct->bin_len,
|
|
bn) != 0)
|
|
goto failure;
|
|
}
|
|
|
|
failed = 0;
|
|
|
|
failure:
|
|
free(mpi_out);
|
|
free(out_str);
|
|
BN_free(bn);
|
|
|
|
return failed;
|
|
}
|
|
|
|
static int
|
|
test_bn_dec2bn(void)
|
|
{
|
|
BIGNUM *bn = NULL;
|
|
BN_ULONG w;
|
|
int ret;
|
|
int failed = 1;
|
|
|
|
/* An empty string fails to parse, as does NULL. */
|
|
if (BN_dec2bn(&bn, "") != 0) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"\") succeeded\n");
|
|
goto failure;
|
|
}
|
|
if (bn != NULL) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"\") succeeded\n");
|
|
goto failure;
|
|
}
|
|
if (BN_dec2bn(&bn, NULL) != 0) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, NULL) succeeded\n");
|
|
goto failure;
|
|
}
|
|
if (bn != NULL) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, NULL) succeeded\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* A minus sign parses as 0. */
|
|
if (BN_dec2bn(&bn, "-") != 1) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-\") failed\n");
|
|
goto failure;
|
|
}
|
|
if (bn == NULL) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-\") failed\n");
|
|
goto failure;
|
|
}
|
|
if (!BN_is_zero(bn)) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-\") is non-zero\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn)) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-\") resulted in "
|
|
"negative zero\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* Ensure that -0 results in 0. */
|
|
if (BN_dec2bn(&bn, "-0") != 2) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-0\") failed\n");
|
|
goto failure;
|
|
}
|
|
if (!BN_is_zero(bn)) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-0\") is non-zero\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn)) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn(_, \"-0\") resulted in "
|
|
"negative zero\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* BN_dec2bn() is the new atoi()... */
|
|
if ((ret = BN_dec2bn(&bn, "0123456789abcdef")) != 10) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn() returned %d, want 10\n", ret);
|
|
goto failure;
|
|
}
|
|
if ((w = BN_get_word(bn)) != 0x75bcd15) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn() resulted in %llx, want %llx\n",
|
|
(unsigned long long)w, 0x75bcd15ULL);
|
|
goto failure;
|
|
}
|
|
|
|
/* And we can call BN_dec2bn() without actually converting to a BIGNUM. */
|
|
if ((ret = BN_dec2bn(NULL, "0123456789abcdef")) != 10) {
|
|
fprintf(stderr, "FAIL: BN_dec2bn() returned %d, want 10\n", ret);
|
|
goto failure;
|
|
}
|
|
|
|
failed = 0;
|
|
|
|
failure:
|
|
BN_free(bn);
|
|
|
|
return failed;
|
|
}
|
|
|
|
static int
|
|
test_bn_hex2bn(void)
|
|
{
|
|
BIGNUM *bn = NULL;
|
|
BN_ULONG w;
|
|
int ret;
|
|
int failed = 1;
|
|
|
|
/* An empty string fails to parse, as does NULL. */
|
|
if (BN_hex2bn(&bn, "") != 0) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"\") succeeded\n");
|
|
goto failure;
|
|
}
|
|
if (bn != NULL) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"\") succeeded\n");
|
|
goto failure;
|
|
}
|
|
if (BN_hex2bn(&bn, NULL) != 0) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, NULL) succeeded\n");
|
|
goto failure;
|
|
}
|
|
if (bn != NULL) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, NULL) succeeded\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* A minus sign parses as 0. */
|
|
if (BN_hex2bn(&bn, "-") != 1) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-\") failed\n");
|
|
goto failure;
|
|
}
|
|
if (bn == NULL) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-\") failed\n");
|
|
goto failure;
|
|
}
|
|
if (!BN_is_zero(bn)) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-\") returned non-zero\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn)) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-\") returned negative zero\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* Ensure that -0 results in 0. */
|
|
if (BN_hex2bn(&bn, "-0") != 2) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-0\") failed\n");
|
|
goto failure;
|
|
}
|
|
if (!BN_is_zero(bn)) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-0\") is non-zero\n");
|
|
goto failure;
|
|
}
|
|
if (BN_is_negative(bn)) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn(_, \"-0\") resulted in "
|
|
"negative zero\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* BN_hex2bn() is the new atoi()... */
|
|
if ((ret = BN_hex2bn(&bn, "9abcdefz")) != 7) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn() returned %d, want 7\n", ret);
|
|
goto failure;
|
|
}
|
|
if ((w = BN_get_word(bn)) != 0x9abcdef) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn() resulted in %llx, want %llx\n",
|
|
(unsigned long long)w, 0x9abcdefULL);
|
|
goto failure;
|
|
}
|
|
|
|
/* A 0x prefix fails to parse without BN_asc2bn() (instead we get 0!). */
|
|
if (BN_hex2bn(&bn, "0x1") != 1) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn() parsed a 0x prefix\n");
|
|
goto failure;
|
|
}
|
|
|
|
/* And we can call BN_hex2bn() without actually converting to a BIGNUM. */
|
|
if ((ret = BN_hex2bn(NULL, "9abcdefz")) != 7) {
|
|
fprintf(stderr, "FAIL: BN_hex2bn() returned %d, want 7\n", ret);
|
|
goto failure;
|
|
}
|
|
|
|
failed = 0;
|
|
|
|
failure:
|
|
BN_free(bn);
|
|
|
|
return failed;
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int failed = 0;
|
|
|
|
failed |= test_bn_asc2bn();
|
|
failed |= test_bn_convert();
|
|
failed |= test_bn_dec2bn();
|
|
failed |= test_bn_hex2bn();
|
|
|
|
return failed;
|
|
}
|