export async function decrypt()

in src/crypto.js [36:50]

• 13 lines of code
• 2 McCabe index (conditional complexity)

export async function decrypt(key, iv, ciphertext, additionalData) {
  try {
    const plaintext = await crypto.subtle.decrypt({
      additionalData,
      iv,
      name: 'AES-GCM',
      tagLength: AEAD_SIZE_INFLATION * 8
    }, key, ciphertext);
    return new Uint8Array(plaintext);
  } catch (err) {
    // Yes, we really do throw 'decrypt_error' when failing to verify a HMAC,
    // and a 'bad_record_mac' error when failing to decrypt.
    throw new TLSError(ALERT_DESCRIPTION.BAD_RECORD_MAC);
  }
}