Daniel J. Bernstein

“The first rule of sane cryptography: never invent your own.”

“The goal is not to make something that's unbreakable. The goal is to make something that's too expensive to break.”

“If you think cryptography is the answer to your problem, then you don't know what your problem is.”

“The user is not a co-designer.”

“Public-key cryptography is not a panacea. It's a tool, and like any tool, it can be misused.”

“The problem is not that people are stupid. The problem is that people are busy.”

“The cost of a security hole can be much larger than the cost of the software itself.”

“It's much easier to write a small, secure program than a large, insecure one.”

“There's something wrong with the way that the C language is being used.”

“Most people are starting to realize that the world has a security problem.”

“My software is in the public domain. You can do whatever you want with it.”

“Assume that the attacker has complete control of the network.”

“The current state of TLS security is a disaster.”

“The problem with patents is that they are a government-granted monopoly on an idea.”

“The NSA is breaking and subverting a tremendous amount of crypto.”