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update javascript sm3

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This commit is contained in:
Zhi Guan
2020-06-15 15:48:27 +08:00
parent bfebb51a42
commit 281d6337f7
1 changed files with 85 additions and 0 deletions
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85
js/sm3.js
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@@ -86,6 +86,7 @@ function sm3_ctx_new() {
nblocks: 0,
num: 0
};
sm3_ctx_init(ctx);
return ctx;
}
@@ -393,6 +394,48 @@ function sm3_test() {
return 1;
}
const SM3_HMAC_IPAD = 0x36;
const SM3_HMAC_OPAD = 0x5C;
function sm3_hmac_ctx_new() {
var ctx = {
sm3_ctx: sm3_ctx_new(),
key : new Array(SM3_BLOCK_SIZE),
};
return ctx;
}
function sm3_hmac_ctx_free(ctx) {
sm3_ctx_free(ctx.sm3_ctx);
for (var i = 0; i < SM3_BLOCK_SIZE; i++) {
ctx.key[i] = 0;
}
delete ctx;
}
function sm3_hmac_init(ctx, key)
{
var i;
var key_len = key.length;
if (key_len <= SM3_BLOCK_SIZE) {
sm3_memcpy(ctx.key, 0, key, 0, key_len);
sm3_memset(ctx.key, key_len, 0, SM3_BLOCK_SIZE - key_len);
} else {
sm3_init(ctx.sm3_ctx);
sm3_update(ctx.sm3_ctx, key);
sm3_final(ctx.sm3_ctx, ctx.key);
sm3_memset(ctx.key, SM3_DIGEST_LENGTH, 0,
SM3_BLOCK_SIZE - SM3_DIGEST_LENGTH);
}
for (i = 0; i < SM3_BLOCK_SIZE; i++) {
ctx.key[i] ^= SM3_HMAC_IPAD;
}
sm3_init(ctx.sm3_ctx);
sm3_update(ctx.sm3_ctx, ctx.key);
}
function sm3_speed() {
var data = new Array(1000 * 1000);
for (var i = 0; i < data.length; i++) {
@@ -401,3 +444,45 @@ function sm3_speed() {
var dgst = sm3(data);
console.log(dgst);
}
function sm3_hmac_update(ctx, data) {
sm3_update(ctx.sm3_ctx, data);
}
function sm3_hmac_final(ctx, mac)
{
for (var i = 0; i < SM3_BLOCK_SIZE; i++) {
ctx.key[i] ^= (SM3_HMAC_IPAD ^ SM3_HMAC_OPAD);
}
sm3_final(ctx.sm3_ctx, mac);
sm3_init(ctx.sm3_ctx);
sm3_update(ctx.sm3_ctx, ctx.key);
sm3_update(ctx.sm3_ctx, mac);
sm3_final(ctx.sm3_ctx, mac);
}
function sm3_hmac(data, key, mac) {
ctx = sm3_hmac_ctx_new();
sm3_hmac_init(ctx, key);
sm3_hmac_update(ctx, data);
sm3_hmac_final(ctx, mac);
sm3_hmac_ctx_free(ctx);
}
function sm3_kdf(Z, klen) {
var key = [];
var ct = 1;
var buf = new Array(4);
var ctx = sm3_ctx_new();
for (var i = 0; i < Math.ceil(klen / SM3_DIGEST_LENGTH); i++) {
sm3_ctx_init(ctx);
sm3_update(ctx, Z);
SM3_PUTU32(buf, 0, ct);
sm3_update(ctx, buf);
sm3_final(ctx, dgst);
key.concat(dgst);
ct++;
}
return key.slice(0, klen);
}