This PDF document describes the Helix stream cipher, devised by Niels Ferguson, Doug Whiting, Bruce Schneier, John Kelsey, Stefan Lucks, and Tadayoshi Kohno. The cipher produces a MAC for every plaintext it encrypts. Source code is not included in this document, but Qualcomm Australia has implemented Helix in C.

Describes the 128-bit variable-length key NESSIE candidate.

The Data Encryption Standard, supporting ECB and CBC modes. Also has a function for Triple DES. Includes an explanation of how the program works and source code.

The Rabbit stream cipher was developed by CRYPTICO A/S in Denmark. It runs in synchronous mode, uses a 128-bit key, and 513 bits of state data. This PDF document includes C source code for Rabbit.

Block cipher proposed by RSA as an AES candidate.

Describes the VMPC one-way function and a stream cipher based on it, designed by Bartosz Zoltak. Pseudo code and test-vectors are available here. The algorithm is similar to RC4 and VERY simple.

Describes the Snow stream cipher: both Snow 1.0 submitted to the NESSIE project and Snow 2.0. Snow is the work of Patrik Ekdahl and Thomas Johansson of the I.T. Dept. at Lund Univ., Sweden. The C source code for Snow is also provided.

A stream cipher developed by Robert Jenkins. It was inspired by RC4.

Documents the Camellia block cipher jointly developed by NTT and Mitsubishi Electric in Japan in 2000. C source code is also provided.

SN3 is a stream cipher designed by Simeon Maltchev. Somewhat like ISAAC, it uses three constantly evolving blocks of state data which update each other. The C source code for SN3 is also provided.