Intermodal transport (or intermodal transportation) involves the use of more than one mode of transport for a journey. See: Intermodal passenger transport; Intermodal freight transport
Encryption algorithms At the heart of every encrypted application is the algorithm, the math that scrambles and unscrambles data. In a nutshell, an encryption algorithm is a function which takes a string of data bytes and returns a new dataset containing unintelligible content. The same algorithm is used to decrypt data, which means encrypted data goes in from one side and the original data comes out the other.
A system for encrypting and decrypting data is a cryptosystem. These usually involve an algorithm for combining the original data (plaintext) with one or more keys - numbers or strings of characters known only to the sender and/or recipient. The resulting output is known as ciphertext.