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Convert test_add and test_sub to file_test.

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Test vectors taken from one run of bc_test with the -bc flag, along with
a handful of manual test vectors around numbers close to zero. (The
output was compared against bc to make sure it was correct.)

BUG=31

Change-Id: I9e9263ece64a877c8497716cd4713b4c3e44248c
Reviewed-on: https://boringssl-review.googlesource.com/8521
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
David Benjamin 2016-06-26 15:03:41 -04:00 committed by Adam Langley
parent d1fa9f970e
commit 80137ba1d3
3 changed files with 1100 additions and 106 deletions
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169
crypto/bn/bn_test.cc
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@ -83,6 +83,7 @@
#include <openssl/err.h>
#include <openssl/mem.h>
#include "../crypto/test/file_test.h"
#include "../crypto/test/scoped_types.h"
#include "../crypto/test/test_util.h"
@ -97,8 +98,6 @@ static const int num0 = 100; // number of tests
static const int num1 = 50; // additional tests for some functions
static const int num2 = 5; // number of tests for slow functions
static bool test_add(FILE *fp);
static bool test_sub(FILE *fp);
static bool test_lshift1(FILE *fp);
static bool test_lshift(FILE *fp, BN_CTX *ctx, ScopedBIGNUM a);
static bool test_rshift1(FILE *fp);
@ -127,6 +126,7 @@ static bool test_asc2bn(BN_CTX *ctx);
static bool test_mpi();
static bool test_rand();
static bool test_asn1();
static bool RunTest(FileTest *t, void *arg);
static const uint8_t kSample[] =
"\xC6\x4F\x43\x04\x2A\xEA\xCA\x6E\x58\x36\x80\x5B\xE8\xC9"
@ -156,10 +156,10 @@ int main(int argc, char *argv[]) {
CRYPTO_library_init();
ScopedFILE bc_file;
const char *name = argv[0];
argc--;
argv++;
while (argc >= 1) {
if (strcmp(*argv, "-bc") == 0) {
if (argc > 0 && strcmp(argv[0], "-bc") == 0) {
if (argc < 2) {
fprintf(stderr, "Missing parameter to -bc\n");
return 1;
@ -168,16 +168,14 @@ int main(int argc, char *argv[]) {
if (!bc_file) {
fprintf(stderr, "Failed to open %s: %s\n", argv[1], strerror(errno));
}
argc--;
argv++;
} else {
fprintf(stderr, "Unknown option: %s\n", argv[0]);
return 1;
}
argc--;
argv++;
argc -= 2;
argv += 2;
}
if (argc != 1) {
fprintf(stderr, "%s [-bc BC_FILE] TEST_FILE\n", name);
return 1;
}
ScopedBN_CTX ctx(BN_CTX_new());
if (!ctx) {
@ -190,18 +188,6 @@ int main(int argc, char *argv[]) {
"| grep -v 0 */\n");
puts_fp(bc_file.get(), "obase=16\nibase=16\n");
message(bc_file.get(), "BN_add");
if (!test_add(bc_file.get())) {
return 1;
}
flush_fp(bc_file.get());
message(bc_file.get(), "BN_sub");
if (!test_sub(bc_file.get())) {
return 1;
}
flush_fp(bc_file.get());
message(bc_file.get(), "BN_lshift1");
if (!test_lshift1(bc_file.get())) {
return 1;
@ -326,8 +312,7 @@ int main(int argc, char *argv[]) {
return 1;
}
printf("PASS\n");
return 0;
return FileTestMain(RunTest, nullptr, argv[0]);
}
static int HexToBIGNUM(ScopedBIGNUM *out, const char *in) {
@ -337,89 +322,79 @@ static int HexToBIGNUM(ScopedBIGNUM *out, const char *in) {
return ret;
}
static bool test_add(FILE *fp) {
ScopedBIGNUM a(BN_new());
ScopedBIGNUM b(BN_new());
ScopedBIGNUM c(BN_new());
if (!a || !b || !c || !BN_rand(a.get(), 512, 0, 0)) {
static ScopedBIGNUM GetBIGNUM(FileTest *t, const char *attribute) {
std::string hex;
if (!t->GetAttribute(&hex, attribute)) {
return nullptr;
}
ScopedBIGNUM ret;
if (HexToBIGNUM(&ret, hex.c_str()) != static_cast<int>(hex.size())) {
t->PrintLine("Could not decode '%s'.", hex.c_str());
return nullptr;
}
return ret;
}
static bool ExpectBIGNUMsEqual(FileTest *t, const char *operation,
const BIGNUM *expected, const BIGNUM *actual) {
if (BN_cmp(expected, actual) == 0) {
return true;
}
ScopedOpenSSLString expected_str(BN_bn2hex(expected));
ScopedOpenSSLString actual_str(BN_bn2hex(actual));
if (!expected_str || !actual_str) {
return false;
}
for (int i = 0; i < num0; i++) {
if (!BN_rand(b.get(), 450 + i, 0, 0)) {
t->PrintLine("Got %s =", operation);
t->PrintLine("\t%s", actual_str.get());
t->PrintLine("wanted:");
t->PrintLine("\t%s", expected_str.get());
return false;
}
static bool TestSum(FileTest *t) {
ScopedBIGNUM a = GetBIGNUM(t, "A");
ScopedBIGNUM b = GetBIGNUM(t, "B");
ScopedBIGNUM sum = GetBIGNUM(t, "Sum");
if (!a || !b || !sum) {
return false;
}
a->neg = rand_neg();
b->neg = rand_neg();
if (!BN_add(c.get(), a.get(), b.get())) {
ScopedBIGNUM ret(BN_new());
if (!ret ||
!BN_add(ret.get(), a.get(), b.get()) ||
!ExpectBIGNUMsEqual(t, "A + B", sum.get(), ret.get()) ||
!BN_sub(ret.get(), sum.get(), a.get()) ||
!ExpectBIGNUMsEqual(t, "Sum - A", b.get(), ret.get()) ||
!BN_sub(ret.get(), sum.get(), b.get()) ||
!ExpectBIGNUMsEqual(t, "Sum - B", a.get(), ret.get())) {
return false;
}
if (fp != NULL) {
BN_print_fp(fp, a.get());
puts_fp(fp, " + ");
BN_print_fp(fp, b.get());
puts_fp(fp, " - ");
BN_print_fp(fp, c.get());
puts_fp(fp, "\n");
}
a->neg = !a->neg;
b->neg = !b->neg;
if (!BN_add(c.get(), c.get(), b.get()) ||
!BN_add(c.get(), c.get(), a.get())) {
return false;
}
if (!BN_is_zero(c.get())) {
fprintf(stderr, "Add test failed!\n");
return false;
}
}
return true;
}
static bool test_sub(FILE *fp) {
ScopedBIGNUM a(BN_new());
ScopedBIGNUM b(BN_new());
ScopedBIGNUM c(BN_new());
if (!a || !b || !c) {
return false;
}
struct Test {
const char *name;
bool (*func)(FileTest *t);
};
for (int i = 0; i < num0 + num1; i++) {
if (i < num1) {
if (!BN_rand(a.get(), 512, 0, 0) ||
!BN_copy(b.get(), a.get()) ||
!BN_set_bit(a.get(), i) ||
!BN_add_word(b.get(), i)) {
static const Test kTests[] = {
{"Sum", TestSum},
};
static bool RunTest(FileTest *t, void *arg) {
for (const Test &test : kTests) {
if (t->GetType() != test.name) {
continue;
}
return test.func(t);
}
t->PrintLine("Unknown test type: %s", t->GetType().c_str());
return false;
}
} else {
if (!BN_rand(b.get(), 400 + i - num1, 0, 0)) {
return false;
}
a->neg = rand_neg();
b->neg = rand_neg();
}
if (!BN_sub(c.get(), a.get(), b.get())) {
return false;
}
if (fp != NULL) {
BN_print_fp(fp, a.get());
puts_fp(fp, " - ");
BN_print_fp(fp, b.get());
puts_fp(fp, " - ");
BN_print_fp(fp, c.get());
puts_fp(fp, "\n");
}
if (!BN_add(c.get(), c.get(), b.get()) ||
!BN_sub(c.get(), c.get(), a.get())) {
return false;
}
if (!BN_is_zero(c.get())) {
fprintf(stderr, "Subtract test failed!\n");
return false;
}
}
return true;
}
static bool test_div(FILE *fp, BN_CTX *ctx) {

1019
crypto/bn/bn_tests.txt Normal file
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File diff suppressed because it is too large Load Diff

2
util/all_tests.json
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@ -3,7 +3,7 @@
["crypto/asn1/asn1_test"],
["crypto/base64/base64_test"],
["crypto/bio/bio_test"],
["crypto/bn/bn_test"],
["crypto/bn/bn_test", "crypto/bn/bn_tests.txt"],
["crypto/bytestring/bytestring_test"],
["crypto/chacha/chacha_test"],
["crypto/cipher/aead_test", "aes-128-gcm", "crypto/cipher/test/aes_128_gcm_tests.txt"],