import "crypto" for Crypto var mainFiber = Fiber.new { System.print("Random v4 : %(Crypto.uuid4())") System.print("DNS v5 : %(Crypto.uuid5("example.com"))") var blob = Crypto.encrypt("secret message", "my-key") System.print("decrypted : %(Crypto.decrypt(blob, "my-key"))") while(true){ Fiber.yield() } }