A library of pseudorandom number generators (PRNGs), ideal for playing with cryptography. These are not built to be secure and will get you hacked if deployed in a real system.

pnc contains standalone, clean implementations. You should be able to:

• Generate numbers as part of a larger system.
• Attack third-party generators to recover their internal state.
• Understand and modify the code to better understand how the generators work.

Install Golang on your machine.

Run go get github.com/46bit/pnc to fetch the code.

Try the examples in $GOPATH/github.com/46bit/pnc/examples.

• Mersenne Twister [1, 2], an incredibly common, insecure PRNG.
• Linear Congruential Generator [1], a common but defective PRNG.
• Tausworthe Generator [1, 2], a weak PRNG once used in slot machines.
• Blum Blum Shub [1, 2], a CSPRNG secured by integer factorisation.
• Blum Micali [1], a CSPRNG secured by the discrete-logarithm problem (DLP).
• Dual EC DRBG [1, 2, 3], a famously backdoored CSPRNG secured by elliptic curve DLP.

Built by Michael Mokrysz from December 2013. Licensed under MIT and formerly known as Pinocchio.