Algorithms

Sosemanuk borrows features of the Snow stream cipher and the Serpent block cipher. The C source code for the cipher is available from the Ecrypt site.

Downloadable password recovery software.

An elementary account of the mathematics behind the RSA cryptosystem.

PPS is a specification for email programs to follow to exchange public keys and encrypt mail. There is no PPS ``program, though. Each email system may find its own way to implement PPS, and may have different criteria for the user-interface.