There are many variations or types of substitution ciphers. One of the more simpler types is a number cipher. A number cipher is where a number takes the place of a letter in the...
When you were a kid, did you have a "Captain Midnight" decoder ring? With it, you could send messages to a friends that no one else could read. Or perhaps you remember using special symbols to write
Everything from your smartphone to your banking relies heavily on cryptography to keep your information safe and your livelihood secure.