srp

This package provides an implementation of the Secure Remote Password protocol (SRP). SRP is a cryptographically strong authentication protocol for password-based, mutual authentication over an insecure network connection.

Unlike other common challenge-response autentication protocols, such as Kerberos and SSL, SRP does not rely on an external infrastructure of trusted key servers or certificate management. Instead, SRP server applications use verification keys derived from each user's password to determine the authenticity of a network connection.

SRP provides mutual-authentication in that successful authentication requires both sides of the connection to have knowledge of the user's password. If the client side lacks the user's password or the server side lacks the proper verification key, the authentication will fail.

Unlike SSL, SRP does not directly encrypt all data flowing through the authenticated connection. However, successful authentication does result in a cryptographically strong shared key that can be used for symmetric-key encryption.

For a full description of the pysrp package and the SRP protocol, please refer to the srp module documentation_.

.. _srp module documentation: http://packages.python.org/srp