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add gmssl command

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This commit is contained in:
Zhi Guan
2022-04-16 22:18:45 +08:00
parent 7e4dd76839
commit 22639fce28
33 changed files with 786 additions and 216 deletions
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148
src/gf128.c
View File

@@ -59,6 +59,7 @@
#include <gmssl/gf128.h>
#include "endian.h"
gf128_t gf128_zero(void)
{
uint8_t zero[16] = {0};
@@ -87,92 +88,31 @@ int gf128_equ_hex(gf128_t a, const char *s)
void gf128_print_bits(gf128_t a)
{
int i;
for (i = 0; i < 128; i++) {
printf("%d", (int)(a % 2)); //FIXME
a >>= 1;
for (i = 0; i < 64; i++) {
printf("%d", (int)(a.hi % 2));
a.hi >>= 1;
}
for (i = 0; i < 64; i++) {
printf("%d", (int)(a.lo % 2));
a.lo >>= 1;
}
printf("\n");
}
void gf128_print(const char *s, gf128_t a)
int gf128_print(FILE *fp, int fmt, int ind, const char *label, gf128_t a)
{
uint8_t be[16];
int i;
printf("%s", s);
printf("%s", label);
gf128_to_bytes(a, be);
for (i = 0; i < 16; i++) {
printf("%02X", be[i]);
}
printf("\n");
return 1;
}
#ifdef GMSSL_HAVE_UINT128
gf128_t gf128_mul(gf128_t a, gf128_t b)
{
const gf128_t mask = (gf128_t)1 << 127;
gf128_t r = 0;
int i;
for (i = 0; i < 128; i++) {
// r = r * 2
if (r & mask)
r = (r << 1) ^ 0x87;
else r <<= 1;
// if b[127-i] == 1, r = r + a
if (b & mask)
r ^= a;
b <<= 1;
}
return r;
}
gf128_t gf128_add(gf128_t a, gf128_t b)
{
return a ^ b;
}
gf128_t gf128_mul2(gf128_t a)
{
if (a & ((gf128_t)1 << 127))
return (a << 1) ^ 0x87;
else return (a << 1);
}
gf128_t gf128_reverse(gf128_t a)
{
gf128_t r = 0;
int i;
for (i = 0; i < 128; i++) {
r = (r << 1) | (a & 1);
a >>= 1;
}
return r;
}
gf128_t gf128_from_bytes(const uint8_t p[16])
{
uint64_t hi = GETU64(p);
uint64_t lo = GETU64(p + 8);
gf128_t r = (gf128_t)hi << 64 | lo;
r = gf128_reverse(r);
return r;
}
void gf128_to_bytes(gf128_t a, uint8_t p[16])
{
a = gf128_reverse(a);
uint64_t hi = a >> 64;
uint64_t lo = a;
PUTU64(p, hi);
PUTU64(p + 8, lo);
}
#else
gf128_t gf128_from_bytes(const uint8_t p[16])
{
gf128_t r;
@@ -253,4 +193,68 @@ gf128_t gf128_mul2(gf128_t a)
return r;
}
#endif
/*
gf128_t gf128_mul(gf128_t a, gf128_t b)
{
const gf128_t mask = (gf128_t)1 << 127;
gf128_t r = 0;
int i;
for (i = 0; i < 128; i++) {
// r = r * 2
if (r & mask)
r = (r << 1) ^ 0x87;
else r <<= 1;
// if b[127-i] == 1, r = r + a
if (b & mask)
r ^= a;
b <<= 1;
}
return r;
}
gf128_t gf128_add(gf128_t a, gf128_t b)
{
return a ^ b;
}
gf128_t gf128_mul2(gf128_t a)
{
if (a & ((gf128_t)1 << 127))
return (a << 1) ^ 0x87;
else return (a << 1);
}
gf128_t gf128_reverse(gf128_t a)
{
gf128_t r = 0;
int i;
for (i = 0; i < 128; i++) {
r = (r << 1) | (a & 1);
a >>= 1;
}
return r;
}
gf128_t gf128_from_bytes(const uint8_t p[16])
{
uint64_t hi = GETU64(p);
uint64_t lo = GETU64(p + 8);
gf128_t r = (gf128_t)hi << 64 | lo;
r = gf128_reverse(r);
return r;
}
void gf128_to_bytes(gf128_t a, uint8_t p[16])
{
a = gf128_reverse(a);
uint64_t hi = a >> 64;
uint64_t lo = a;
PUTU64(p, hi);
PUTU64(p + 8, lo);
}
*/

73
src/sm4_modes.c
View File

@@ -239,7 +239,6 @@ int sm4_gcm_decrypt(const SM4_KEY *key, const uint8_t *iv, size_t ivlen,
return 1;
}
int sm4_cbc_encrypt_init(SM4_CBC_CTX *ctx,
const uint8_t key[SM4_BLOCK_SIZE], const uint8_t iv[SM4_BLOCK_SIZE])
{
@@ -303,9 +302,6 @@ int sm4_cbc_encrypt_finish(SM4_CBC_CTX *ctx, uint8_t *out, size_t *outlen)
error_print();
return -1;
}
format_bytes(stderr, 0, 0, "encrypt_finish", ctx->block, ctx->block_nbytes);
if (sm4_cbc_padding_encrypt(&ctx->sm4_key, ctx->iv, ctx->block, ctx->block_nbytes, out, outlen) != 1) {
error_print();
return -1;
@@ -370,13 +366,74 @@ int sm4_cbc_decrypt_finish(SM4_CBC_CTX *ctx, uint8_t *out, size_t *outlen)
error_print();
return -1;
}
format_bytes(stderr, 0, 0, "block", ctx->block, ctx->block_nbytes);
format_bytes(stderr, 0, 0, "iv", ctx->iv, 16);
if (sm4_cbc_padding_decrypt(&ctx->sm4_key, ctx->iv, ctx->block, SM4_BLOCK_SIZE, out, outlen) != 1) {
error_print();
return -1;
}
return 1;
}
int sm4_ctr_encrypt_init(SM4_CTR_CTX *ctx,
const uint8_t key[SM4_BLOCK_SIZE], const uint8_t ctr[SM4_BLOCK_SIZE])
{
sm4_set_encrypt_key(&ctx->sm4_key, key);
memcpy(ctx->ctr, ctr, SM4_BLOCK_SIZE);
memset(ctx->block, 0, SM4_BLOCK_SIZE);
ctx->block_nbytes = 0;
return 1;
}
int sm4_ctr_encrypt_update(SM4_CTR_CTX *ctx,
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
{
size_t left;
size_t nblocks;
size_t len;
if (ctx->block_nbytes >= SM4_BLOCK_SIZE) {
error_print();
return -1;
}
*outlen = 0;
if (ctx->block_nbytes) {
left = SM4_BLOCK_SIZE - ctx->block_nbytes;
if (inlen < left) {
memcpy(ctx->block + ctx->block_nbytes, in, inlen);
ctx->block_nbytes += inlen;
return 1;
}
memcpy(ctx->block + ctx->block_nbytes, in, left);
sm4_ctr_encrypt(&ctx->sm4_key, ctx->ctr, ctx->block, SM4_BLOCK_SIZE, out);
in += left;
inlen -= left;
out += SM4_BLOCK_SIZE;
*outlen += SM4_BLOCK_SIZE;
}
if (inlen >= SM4_BLOCK_SIZE) {
nblocks = inlen / SM4_BLOCK_SIZE;
len = nblocks * SM4_BLOCK_SIZE;
sm4_ctr_encrypt(&ctx->sm4_key, ctx->ctr, in, len, out);
in += len;
inlen -= len;
out += len;
*outlen += len;
}
if (inlen) {
memcpy(ctx->block, in, inlen);
}
ctx->block_nbytes = inlen;
return 1;
}
int sm4_ctr_encrypt_finish(SM4_CTR_CTX *ctx, uint8_t *out, size_t *outlen)
{
size_t left;
size_t i;
if (ctx->block_nbytes >= SM4_BLOCK_SIZE) {
error_print();
return -1;
}
sm4_ctr_encrypt(&ctx->sm4_key, ctx->ctr, ctx->block, ctx->block_nbytes, out);
return 1;
}