Com InfoSec Resource Advertise at Cissps. Availability is the property that a given resource will be usable during a given time period, and is not provided by cryptography.
Cryptography is the solution to counteract such threats.
Cryptography is the science of mapping readable text, called plaintext, into an unreadable format, called ciphertext, and vice versa. The mapping process is a sequence of mathematical computations. The computations affect the appearance of the data, without changing its meaning. It provide routing service to establish connections across communications networks. It provides service directly to users such as file transfer protocols.