Allows for quick two-way blowfish encryption without requiring the MCrypt PHP extension.

Status: 1.1.0RC2 (beta) released on 2008-08-30
License: New BSD
Maintained: Yes
Open Bugs: none

A class to emulate Perl's Crypt::CBC module.

Status: 1.0.1 (stable) released on 2012-01-27
License: BSD
Maintained: Yes
Open Bugs: none

Encryption class for RC4 encryption. Users are highly encourages to migrate to Crypt_RC42 (Crypt RC4 2.0); a PHP5 compatible release with multiple bug fixes.

This package has been deprecated in favor of Crypt_RC42.

Status: 1.0.3 (stable) released on 2010-10-04
License: PHP
Maintained: No
Open Bugs: none

Provides RSA-like key generation, encryption/decryption, signing and signature checking. Users are strongly advised to migrate to phpseclib's Crypt_RSA; which is better maintained and less vulnerable to security issues.

Status: 1.2.1 (beta) released on 2009-01-05
License: PHP
Maintained: No
Open Bugs: 6

A class that implements the Tiny Encryption Algorithm (TEA) (New Variant).

Status: 1.1.0 (stable) released on 2008-03-06
License: PHP 2.02
Maintained: Yes
Open Bugs: none

An implementation of the XXTEA encryption algorithm. NOTICE: unregular default behavior.

Status: 0.9.0 (beta) released on 2008-03-06
License: LGPL License
Maintained: Yes
Open Bugs: none

Several other PHP projects provide packages of their software that are installable using the PEAR infrastructure. A list of these projects can be found in the channels section.