CKS is an openPGP (RFC2440) compliant public key server. It is currently under development. It is written in C, and runs on Linux. It uses PostgreSQL for key storage, and supports the hkp protocol (it can interface with GnuPG and NAI PGP). The keyserver is mostly functional, and there is a link to a running copy on the homepage.
cwebldap is a CGI program written in ANSI C which uses the LDAP API to allow web clients to query an LDAP directory. It uses a configuration file to determine what to display from the directory. The configuration file allows you to set maximum result set size, schema information, binding information, and LDAP server information.
CryptNET Passgen (passgen) is a password generator. It generates a list of password candidates for the user to choose from by mapping operating system sources of pseudo-randomness into printable character arrays using a mod operation. A number of available command line options gives it a great deal of flexibility. It is capable of generating passwords composed of printable characters, alphanumeric characters, alphabetic characters, or only numeric characters.
GPL'd ANSI C Version of RC5-64
I wrote a GPL'd ANSI C implementation of RC5-64 and the
rest of the RC5 challenges. If you don't want to run the
dnet client because of security considerations, please run
the open free code.
You can download it from here: