Classes
Pure-PHP implementation of AES.
            Base Class for all Crypt_* cipher classes
            Pure-PHP implementation of Blowfish.
            Pure-PHP implementation of DES.
            Pure-PHP implementations of keyed-hash message authentication codes (HMACs) and various cryptographic hashing functions.
            Pure-PHP implementation of RC2.
            Pure-PHP implementation of RC4.
            Pure-PHP PKCS#1 compliant implementation of RSA.
            Pure-PHP implementation of Rijndael.
            Pure-PHP implementation of Triple DES.
            Pure-PHP implementation of Twofish.
            Pure-PHP ANSI Decoder
            Pure-PHP ASN.1 Parser
            ASN.1 Element
            Pure-PHP X.509 Parser
            Pure-PHP arbitrary precision integer arithmetic library. Supports base-2, base-10, base-16, and base-256
numbers.
            Pure-PHP implementations of SCP.
            Pure-PHP implementations of SFTP.
            SFTP Stream Wrapper
            Pure-PHP implementation of SSHv1.
            Pure-PHP implementation of SSHv2.
            Pure-PHP ssh-agent client identity factory
            Pure-PHP ssh-agent client identity object