TL-SMD: Two layered secure message digest algorithm

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, MD5, 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 (CBC) mode and electronic codebook (ECB) mode with some modification is used.