Function decrypt

util/crypto-util.ts:26–35

(buffer: Uint8Array, key: AesKey)

}

export function decrypt(buffer: Uint8Array, key: AesKey): string {
  const nonce = buffer.subarray(0, NONCE_SIZE);
  const tag = buffer.subarray(buffer.length - TAG_SIZE);
  const ciphertext = buffer.subarray(NONCE_SIZE, buffer.length - TAG_SIZE);
  const decipher = createDecipheriv('aes-256-gcm', key, nonce);
  decipher.setAuthTag(tag);
  const plaintext = decipher.update(ciphertext);
  decipher.final();
  return plaintext.toString('utf8');
}