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Change GF(2^128) API

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from `r = op(a, b)` to `op(r, a, b)`
This commit is contained in:
Zhi Guan
2024-04-11 17:57:41 +08:00
parent 6a55fd1445
commit f9e9b20fa7
5 changed files with 153 additions and 194 deletions
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75
tests/gf128test.c
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@@ -77,25 +77,17 @@ int test_gf128_mul_more(void)
printf("test %zu\n", i);
a = gf128_from_hex(tests[i].a);
b = gf128_from_hex(tests[i].b);
gf128_from_hex(a, tests[i].a);
gf128_from_hex(b, tests[i].b);
printf("a0 = %llx, a1 = %llx\n", a.lo, a.hi);
printf("b0 = %llx, b1 = %llx\n", b.lo, b.hi);
r = gf128_mul(a, b);
printf("r0 = %llx, r1 = %llx\n", r.lo, r.hi);
gf128_print_bits(a);
gf128_print_bits(b);
gf128_print_bits(r);
gf128_to_bytes(r, buf);
format_bytes(stderr, 0, 0, "r" ,buf ,16);
gf128_mul(r, a, b);
if (gf128_equ_hex(r, tests[i].r) != 1) {
printf("error: %s\n", tests[i].label);
error_print();
//return -1;
return -1;
}
}
@@ -103,39 +95,6 @@ int test_gf128_mul_more(void)
return 1;
}
int test_gf128_armv8(void)
{
gf128_t a = { 1, 0 };
gf128_t b = { 1, 0 };
a = gf128_from_hex("de300f9301a499a965f8bf677e99e80d");
b = gf128_from_hex("14b267838ec9ef1bb7b5ce8c19e34bc6");
// pmull 是对低位做了乘法
//gf128_print_bits(b);
gf128_t c = gf128_mul(a, b);
gf128_print_bits(c);
return 1;
}
int test_gf128_print(void)
{
gf128_t a = { 0, 0x8000000000000000 }; // a = 1 + 0*x + ... + 0*x^127
gf128_print(stderr, 0, 0, "1 + 0*x + ... + 0*x^127", a);
// 这个函数打印的不对，因为真正的值是需要 reverse_bits 的，但是这里我们没有反转
gf128_print_bits(a);
// 看来这个比较奇怪了
return 1;
}
int test_gf128_from_hex(void)
{
char *tests[] = {
@@ -149,7 +108,7 @@ int test_gf128_from_hex(void)
int i;
for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
a = gf128_from_hex(tests[i]);
gf128_from_hex(a, tests[i]);
if (gf128_equ_hex(a, tests[i]) != 1) {
error_print();
return -1;
@@ -160,7 +119,7 @@ int test_gf128_from_hex(void)
return 1;
}
int test_gf128_mul2(void)
int test_gf128_mul_by_2(void)
{
char *tests[] = {
"00000000000000000000000000000001",
@@ -174,8 +133,8 @@ int test_gf128_mul2(void)
int i;
for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
a = gf128_from_hex(tests[i]);
a = gf128_mul2(a);
gf128_from_hex(a, tests[i]);
gf128_mul_by_2(a, a);
if (gf128_equ_hex(a, results[i]) != 1) {
error_print();
return -1;
@@ -196,16 +155,16 @@ int test_gf128_mul(void)
char *hex_mul_a_b = "7d87dda57a20b0c51d9743071ab14010";
gf128_t a, b, r;
a = gf128_from_hex(hex_a);
b = gf128_from_hex(hex_b);
gf128_from_hex(a, hex_a);
gf128_from_hex(b, hex_b);
r = gf128_add(a, b);
gf128_add(r, a, b);
if (gf128_equ_hex(r, hex_add_a_b) != 1) {
error_print();
return -1;
}
r = gf128_mul(a, b);
gf128_mul(r, a, b);
if (gf128_equ_hex(r, hex_mul_a_b) != 1) {
error_print();
return -1;
@@ -217,11 +176,9 @@ int test_gf128_mul(void)
int main(void)
{
if (test_gf128_armv8() != 1) goto err;
if (test_gf128_mul_by_2() != 1) goto err;
if (test_gf128_mul_more() != 1) goto err;
if (test_gf128_print() != 1) goto err;
if (test_gf128_from_hex() != 1) goto err;
if (test_gf128_mul2() != 1) goto err;
if (test_gf128_mul() != 1) goto err;
printf("%s all tests passed\n", __FILE__);
return 0;