The one-time pad (OTP) is a theoretically unbreakable cipher. However, in practice it is of limited usability because it requires a pre-shared key of at least the same length as the message. This tool helps you encode or decode one-time pads if you have the key.
About Math Pad. MathPad is a tool for students to work on addition, subtraction, multiplication or division problems on a computer. MathPad is a word processor for math, not a tutorial or calculator. The student provides answers to math problems and the final answers can be checked in the Problem List mode for accuracy.
