An encryption key that is kept concealed because its discovery voids the security of the encryption session. A secret key generally refers to the secret key cryptography system, in which both sides ...

Encryption, for security purposes, is also known as a cipher. It is a mathematical algorithm that hides information or makes it secret. Data that is not encrypted is called plain text, while encrypted ...

Readers of a certain age will remember those 'invisible ink' spy toys that let you write a 'secret' message which would only appear after rubbing the page with half of a lemon. Yeah, this is not that.