PHP WebShell

• .. (вверх)
• [DIR] ..
• [FILE] index.ts
• [FILE] output.ts

Просмотр файла: output.ts

// OP_RETURN {aa21a9ed} {commitment}

import { script as bscript } from '../../';
import { opcodes } from '../../';
import * as types from 'bitcoinjs-lib/src/types';

const typeforce = require('typeforce');

const HEADER: Buffer = Buffer.from('aa21a9ed', 'hex');

export function check(script: Buffer | Array<number | Buffer>): boolean {
  const buffer = bscript.compile(script);

  return (
    buffer.length > 37 && buffer[0] === opcodes.OP_RETURN && buffer[1] === 0x24 && buffer.slice(2, 6).equals(HEADER)
  );
}

check.toJSON = (): string => {
  return 'Witness commitment output';
};

export function encode(commitment: Buffer): Buffer {
  typeforce(types.Hash256bit, commitment);

  const buffer = Buffer.allocUnsafe(36);
  HEADER.copy(buffer, 0);
  commitment.copy(buffer, 4);

  return bscript.compile([opcodes.OP_RETURN, buffer]);
}

export function decode(buffer: Buffer): Buffer {
  typeforce(check, buffer);

  return (bscript.decompile(buffer)![1] as Buffer).slice(4, 36);
}

Выполнить команду