Hashing in Swift

Hash.swift

import CryptoKit


/// Hashes a string and returns it as a string.
func hash(_ string: String) -> String {
  guard let data = string.data(using: .utf8) else { return "null" }

  return SHA256
    .hash(data: data)
    .map { String(format: "%02x", $0) }
    .joined()
}