OpenSSL

OpenSSL is a popular open source encryption toolkit and library. It is a fork of the discontinued SSLeay software. It can create, decrypt, and convert many encryption-related formats.

Related formats

 * OpenSSL salted format
 * PEM
 * TLS

Many of the formats listed in the Encryption and Security articles are supported by OpenSSL.

Links

 * OpenSSL website
 * OpenSSL