What is SHA-1 HASH ?
SHA-1 means Secure Hash Algorithm 1
SHA-2 was designed by the National Security Agency (NSA) and published by the National Institute of Standards and Technology (NIST) in 1995 as a successor to the earlier MD4 and MD5 hash functions. Like other cryptographic hash functions, SHA-1 HASH generator tool takes an input text or string of arbitrary length and produces a fixed-length hash value that is unique to the input data.