1. Secure Socket Layer (SSL) binary and related cryptographic tools. This package contains the openssl binary and related tools. It is part of the OpenSSL implementation of SSL. You need it to perform certain cryptographic actions like: o Creation of RSA, DH and DSA key parameters o Creation of X.509 certificates, CSRs and CRLs o Calculation of Message Digests o Encryption and Decryption with Ciphers o SSL/TLS Client and Server Tests o Handling of S/MIME signed or encrypted mail . From Debian 3.0r0 APT

2. The openssl certificate management tool and the shared libraries that provide various encryption and decription algorithms and protocols, including DES, RC4,RSA and SSL. This product includes software developed by the OpenSSL Project for use in theOpenSSL Toolkit (http://www.openssl.org/). This product includes cryptographic software written by Eric Young(eay@cryptsoft.com). This product includes software written by Tim Hudson (tjh@cryptsoft.com). From Mandrake 9.0 RPM