IMAGE BASED MULTI-LENGTH RANDOM KEY GENERATOR

Abstract

Random Number Generators (RNGs) are an important building block for algorithms and protocols incryptography. They are dominant in the construction of encryption keys and other cryptographic algorithm parameters. In practice, statistical testing is employed to gather evidence that a generator indeed produces numbers that appear to be random. In this paper a new algorithm is proposed to generate variable length random binary sequence. The random sequence is generated by selecting different point from hashed digital images; the selecting process is organized in such a way to ensure randomness and to avoid regeneration of same sequence within a year. The generated sequences are tested to meet the National Institute of Standard and Technology (NIST) criteria. In proposed algorithm the traditional key exchange is not needed which gives advantage to the system from the security point of view. This proposed algorithm is capable of generating random binary sequences that can meet security requirements of cryptographic algorithms.