The NTRU public-key cryptosystem provides a Java implementation of the NTRUEncrypt and NTRUSign algorithms. Both algorithms are considered safe against quantum computer attacks. A C port of NTRUEncrypt is available, as well.
libntru is a C library which implements the NTRUEncrypt public-key encryption algorithm.
A tool for securing DNS communications between a client and a DNS resolver.
A polyhedral extraction tool (PET).