Simple RSA cryptography program I wrote to better understand Java and OOP; it is based on the RSA encryption technology and includes an efficient way to compute modulus for large integers. The simple encryption is restricted to the twenty-six lower-case letters in the English alphabet-
The code is written in Java, and variable names, methods and attributes are in Spanish; the important transalations are: llavepublica:= Public Key, frase:= Phrase, clave:= Numeric key/code to translate characters to numbers, Encriptar:= Encryption, Decriptar:= Decrypt.