What is Secure Hash Algorithm (SHA) in Network Security

Cryptographic hash functions cannot be thought of outside mathematics. Cryptographic hash functions are a valuable tool in cryptography. They are applied in many areas of information security to provide protection of the authenticity of messages; data integrity verification which prevents modification of data from going undetected, time stamping and digital signature scheme. The hash functions that are used in various security related applications are called cryptographic hash functions. Secure Hashing Algorithms, also known as SHA, are a family of cryptographic functions designed to keep data secured. Overview of SHA The SHA i.e. Secure Hash Algorithm is basically based on the concept of hash function. The basic idea of a hash function is that it takes a variable length message as input and produces a fixed length message as output which can also be called as hash or message-digest. The trick behind building a good, secured cryptographic hash function is to devise a good compression function in which each input bit affects as many output bits as possible. In computer cryptography, a popular message compress standard is utilized known as Secure Hash Algorithm (SHA). Its enhanced version is called SHA-1. It has the ability to compress a fairly lengthy message and create…

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