Reply to post: Re: One time pads

UK.gov is launching an anti-Facebook encryption push. Don't think of the children: Think of the nuances and edge cases instead

Charles 9

Re: One time pads

But for one snag. OTP is consumed one-to-one with your data. It's a requirement for OTP;s strong data security (defined as the idea that a ciphertext encrypted using a OTP can literally be decoded to anything of that size or smaller). A 4K message requires at least a 4K OTP. This also makes it redundant to use one OTP to send another one: you use up the same amount of pad either way.

POST COMMENT House rules

Not a member of The Register? Create a new account here.

  • Enter your comment

  • Add an icon

Anonymous cowards cannot choose their icon