The code from the Applied Cryptography disk, available outside the US.

An open source cryptography library that contains highly optimized C and assembler implementations of many well-known algorithms including Blowfish, MD5, SHA-1, Diffie-Hellman and ElGamal.

An open-source C++ crypto library that includes block and stream ciphers, hash functions, MACs, and public key algorithms, along with an easy to use filter-based interface.

A free, public domain implementation of RSA Data Security's BSAFE API, using the SSLeay crypto library.

Library of cryptographic primitives in ANSI C, including block ciphers and hash functions, together with generic modes of operation. Also includes simple key management system, multiprecision arithmetic, and public key algorithms.

A powerful security toolkit which allows even inexperienced crypto programmers to easily add encryption and authentication services to their software.

Free C++ library for cryptography: includes ciphers, message authentication codes, one-way hash functions, public-key cryptosystems, and key agreement schemes.

CTClib (PGP-interoperable ANSI C encryption software library) and CTCjava (Java crypto components and application).

Gives your applications access to multi-precision integer math routines with just a function call. Full source code available. For VB, C++, or embedded systems.

Offers Elliptic Curve software. including ECDSACom, an ActiveX control, and borZoi, an open source library. Includes product descriptions and contact information.

Includes code for IDEA, Blowfish, SHA-1, MD5, RC16 (RC4 extension), an initial implementation of DES and a few related toys.

A variety of tools to add PKI functionality to your application.

A free implementation of the public key cryptography system with source code and documentation.

Supports the following algorithms; BLOWFISH, TWOFISH, DES, TripleDES, 3-WAY, SAFER-sk64, SAFER-sk128, SAFER+, LOKI97, GOST, RC2, RC6, MARS, IDEA, RIJNDAEL-128 (AES), RIJNDAEL-192, RIJNDAEL-256, SERPENT, CAST-128, CAST-256, ARCFOUR and WAKE. ANSI C.

Information and implementation in various languages.

Mozilla's NSS, is a set of libraries designed to support cross-platform development of security-enabled server applications.

The Nickellie Encryption Toolkit is a data and file encryption library that provides a COM interface to simplify development of Windows and Pocket PC software that requires encryption.

A collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.

Tools to work with X.509 certificates and revocation lists, various security syntax and messaging formats, a time stamping API, public key encryption algorithms, key exchange protocols, and a range of secure hash functions. Lists types of uses and compatible languages.

Collection of programming examples on encryption including: file encryption, steganography in images and sound, data base record encryption, and password verification. All written in Pascal, all source code available.

Implements the public key signature system QuartzLight in Java where QuartzLight refers to a research version of the Quartz standard.

Implementation of RC5 (128) in C.

An implementation of the message digest algorithm. Includes a performance measurement facility.

Add hash (MD2, MD5, SHA-1, SHA-2, RIPEMD-160, PANAMA, TIGER), checksum (CRC32, ADLER32) and HMAC (HMAC-MD5, HMAC-SHA1, HMAC-SHA256, HMAC-SHA384, HMAC-SHA512, HMAC-RIPEMD160, HMAC-PANAMA, HMAC-TIGER) calculations to your Windows apps quickly and easily. C++, commercial.

A library for the TMS320C54x DSP, contains algorithms for symmetric block ciphers, one-way hash functions, public key encryption and digital signature.

SSL++ is simple C++ library encapsulating OpenSSL functionality to make it simple and easily accessible to C++ programmers.

A Java open source cipher that combines one time pad with public and private keys.

Contains C source code.

In C, Delphi, Java, Perl and Visual Basic.

Cryptographic classes for Microsoft .NET. Includes DES, TripleDES, RC2, and Rijndael (AES) implementations.