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SHA-256 Cryptographic Hash Algorithm in Javascript Login Example with Java

What is SHA-256?

The SHA (Secure Hash Algorithm) is one of a number of cryptographic hash functions. A cryptographic hash is like a signature for a text or a data file. SHA-256 algorithm generates an almost-unique, fixed size 256-bit (32-byte) hash. A hash is not ‘encryption’ .  Hash is a one way function – it cannot be decrypted back. This makes it suitable for password validation, challenge hash authentication, anti-tamper, digital signatures.

SHA-256 is one of the successor hash functions to SHA-1 and SHA-2 , and is one of the strongest hash functions available.

To Create Login example by using javascript and java we have create following file .

Input.html

SHA256.js

SHALogin.java