In this era of technology with an increasing usage of Internet, data security has become a major issue.Various cryptographic hash function such as MD4, MDS, SHA-1, SHA-2 has been defined to provide data security. In this paper we proposed a new algorithm, TL-SMD (Two Layered Secure Message Digest) for building a secure hash function, which can provide two level processing security. For the construction of this algorithm, various techniques have been used that includes block cipher technique, modified combination of Merkle-Damgard construction and fast wide pipe construction. For computing the hash value from the input block, combination of cipher block chaining (CBq mode and electronic code book (ECB) mode with some modification is used.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.