In China and Iran, a license is still required to use cryptography.

A second method of prevention is by using cryptography.

Of these, just over 400 had been scrambled, using unbreakable cryptography.

Probabilistic encryption is particularly important when using public key cryptography.

So, I mean, it's using state-of-the-art cryptography to protect itself.

Cryptographic engineering is the discipline of using cryptography to solve human problems.

I mean, it sounds like there's - if you use real cryptography, this thing would not stand up at all.

All that is needed is for the camera to sign each photo digitally using public key cryptography.

It also did not use public key cryptography.

They showed how to use public key cryptography to implement a secure information extortion attack.