A DUAL-ARCHITECTURE HASHING FRAMEWORK WITH INTERLEAVED BLOCK MIXING FOR ENHANCED SECURITY AND ENTROPY
Authors: Vedant Pillai
Affiliation: K J Somaiya Institute of Technology
Category:
Keywords: Hybrid hash, Cryptographic functions, Entropy enhancement, Block mixing, MD5 replacement, Dual architecture, Secure hashing, Software Security
ABSTRACT. Hash functions are used to ensure integrity and confidentiality of sensitive data. They are crucial to ensure that even if sensitive data is leaked, it would be in a non-readable and non-exploitable format. From a security perspective, hash functions can be divided into 2 types - Cryptographic Hash Functions and Non-Cryptographic Hash Functions. Cryptographic hash functions are primarily used in applications that demand security such as digital signatures, certificate verification and password storage. Over the years, many cryptographic hash functions like MD5, SHA-1, SHA-256, BLAKE2 and RIPEMD-160 have been introduced to provide enhanced security. MD5 (Message Digest 5), once a widely used hashing algorithm, is now deprecated due to the presence of collision and preimage attacks. Despite its deprecation, it is still used in many applications due to its simplicity and performance efficiency. Non-Cryptographic hash functions are commonly employed in applications where the primary goal is not security but speed and performance of the application. xxHash is a non-cryptographic hash function which is known for being extremely fast, working at RAM speed limits. It is widely used for non-security tasks like checksums and indexing. Thus, in this paper, a hybrid hashing algorithm is proposed which integrates the legacy compatibility of MD5 with the speed and entropy characteristics of xxHash. The proposed system can be used in applications requiring improved security while not decreasing their performance.
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