1. /**
  2. * Hashes user data for non-production use with optional flags.
  3. *
  4. * @param {string} data The data to hash.
  5. * @param {string} [algorithm='sha256'] The hashing algorithm to use (e.g., 'md5', 'sha1', 'sha256', 'sha512'). Defaults to 'sha256'.
  6. * @param {boolean} [salt=true] Whether to include a salt. Defaults to true.
  7. * @param {string} [saltString='randomSalt'] The salt string to use. Defaults to 'randomSalt'.
  8. * @returns {string} The hashed data. Returns an empty string if data is invalid.
  9. */
  10. function hashData(data, algorithm = 'sha256', salt = true, saltString = 'randomSalt') {
  11. if (typeof data !== 'string' || data.length === 0) {
  12. return ""; // Handle invalid input
  13. }
  15. const crypto = require('crypto');
  17. let hash;
  18. try {
  19. let hashOptions = {};
  20. switch (algorithm.toLowerCase()) {
  21. case 'md5':
  22. hashOptions = { algorithm: 'md5' };
  23. break;
  24. case 'sha1':
  25. hashOptions = { algorithm: 'sha1' };
  26. break;
  27. case 'sha256':
  28. hashOptions = { algorithm: 'sha256' };
  29. break;
  30. case 'sha512':
  31. hashOptions = { algorithm: 'sha512' };
  32. break;
  33. default:
  34. console.warn(`Unknown algorithm: ${algorithm}. Defaulting to sha256.`);
  35. hashOptions = { algorithm: 'sha256' };
  36. }
  38. let hashValue;
  39. if (salt) {
  40. hashValue = crypto.createHash(algorithm, data + saltString).digest('hex');
  41. } else {
  42. hashValue = crypto.createHash(algorithm).update(data).digest('hex');
  43. }
  45. return hashValue;
  46. } catch (error) {
  47. console.error("Hashing error:", error);
  48. return ""; // Handle errors
  49. }
  50. }
  52. module.exports = hashData;

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