Complex sentence: The Secure Remote Password Protocol (SRP) is a password-authenticated key agreement protocol which allows a user to authenticate himself to a server, which is resistant to dictionary attacks mounted by an eavesdropper, and does not require a trusted third party.
Split into simpler sentences: The Secure Remote Password Protocol (SRP) is a password-authenticated key agreement protocol. The SRP protocol has a number of desirable properties: it allows a user to authenticate himself to a server, it is resistant to dictionary attacks mounted by an eavesdropper, and it does not require a trusted third party.