PHP WebShell

• .. (вверх)
• [DIR] ..
• [FILE] array.ts
• [FILE] auth.ts
• [FILE] blake2b.ts
• [FILE] blake2s.ts
• [FILE] box.ts
• [FILE] check.ts
• [DIR] client
• [FILE] convert.ts
• [FILE] core.ts
• [FILE] curve25519.ts
• [FILE] hash.ts
• [FILE] nacl.ts
• [FILE] poly1305.ts
• [FILE] random.ts
• [FILE] salsa20.ts
• [FILE] scalarmult.ts
• [FILE] sealedbox.ts
• [FILE] secretbox.ts
• [DIR] server
• [FILE] sign.ts
• [FILE] validate.ts
• [FILE] verify.ts

Просмотр файла: auth.ts

import { ByteArray } from './array';
import { hash } from './hash';

export const enum AuthLength {
    Auth = 32,
    AuthFull = 64,
    Key = 32,
}

export function auth(msg: ByteArray, key: ByteArray) {
    const out = ByteArray(32);

    out.set(hmac(msg, key).subarray(0, 32));

    return out;
}

const BLOCK_SIZE = 128;
const HASH_SIZE = 64;

function hmac(msg: ByteArray, key: ByteArray): ByteArray {
    const buf = ByteArray(BLOCK_SIZE + Math.max(HASH_SIZE, msg.length));
    let i, innerHash;

    if (key.length > BLOCK_SIZE) key = hash(key);

    for (i = 0; i < BLOCK_SIZE; i++) buf[i] = 0x36;
    for (i = 0; i < key.length; i++) buf[i] ^= key[i];

    buf.set(msg, BLOCK_SIZE);
    innerHash = hash(buf.subarray(0, BLOCK_SIZE + msg.length));

    for (i = 0; i < BLOCK_SIZE; i++) buf[i] = 0x5c;
    for (i = 0; i < key.length; i++) buf[i] ^= key[i];

    buf.set(innerHash, BLOCK_SIZE);
    return hash(buf.subarray(0, BLOCK_SIZE + innerHash.length));
}

export const auth_full: (message: ByteArray, key: ByteArray) => ByteArray = hmac;

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