N/crypto Module in NetSuite: Hashing, Encryption & Digital Signatures

The N/crypto module provides cryptographic operations for SuiteScript — including hashing (SHA-256, MD5), HMAC signing, encryption, decryption, and digital signature creation. It is essential for securing webhook validation, API authentication, and data protection.

Creating an HMAC Hash (Webhook Validation)

define(["N/crypto", "N/encode", "N/log"], (crypto, encode, log) => {
  // Create a secret key
  const secretKey = crypto.createSecretKey({
    key: encode.convert({ string: "mySecretKey", inputEncoding: encode.Encoding.UTF_8, outputEncoding: encode.Encoding.BASE_64 }),
    encoding: encode.Encoding.BASE_64
  });

  // Create HMAC signature
  const hmac = crypto.createHmac({
    algorithm: crypto.HashAlg.SHA256,
    key: secretKey
  });
  hmac.update({ input: "payload_to_sign" });
  const signature = hmac.digest({ outputEncoding: encode.Encoding.HEX });
  log.debug("Signature", signature);
  return {};
});

Hash Algorithms

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