What is SHA-256?

In simple words, SHA-256 (Secure Hash Algorithm) is a cryptographic hash function with a digest length of 256 bits. SHA-256 generates a unique 256-bit (32-byte) signature for a text.

To give you an example: The SHA-256 hash for the word „Protectstar“ is „769f8b6ea14bb0b65f29ff32c315c1beb3c232ef4faa88c0680dd0eccbd347fa“