== Encryption Application ==
The encryption application provides a simple method to encrypt a plaintext into a ciphertext. This application was the original "simple serial". The following operations are performed:
# Load encryption key with 'k' command (for example, k2b7e151628aed2a6abf7158809cf4f3c\n sets key to k2b7e151628aed2a6abf7158809cf4f3c2b7e151628aed2a6abf7158809cf4f3c).
# Set input text to encryption module with 'p' command. Device encrypts input text, and toggles the I/O trigger line during the encryption operation.
# The ciphertext is returned with the 'r' command.