z-utils-ts/src/lib/hash.ts

使用TypeScript编写的工具函数库

export async function computeSHA256Hash(data: string) {
  const encoder = new TextEncoder();
  const dataBuffer = encoder.encode(data);
  const hashBuffer = await crypto.subtle.digest("SHA-256", dataBuffer);
  const hashArray = Array.from(new Uint8Array(hashBuffer));

  let len = hashArray.length
  let result = "";
  for(let i = 0; i < len; i++) {
    hashArray[i] = hashArray[i] & 0xFF;
    let byte = hashArray[i];
    result += padStart(byte.toString(16), 2)
  }
  return result;
}

function padStart(num: string, length: number, symbol: string = '0'): string {
  while (num.length < length) {
    num = symbol + num;
  }
  return num;
}
// function padEnd(num: string, length: number, symbol: string = '0'): string {
//   while (num.length < length) {
//     num =  num + symbol;
//   }
//   return num;
// }