SHA256 Online Hash Generator
This tool will take any string and hash it using the SHA256 algorithm.
Frequently Asked Questions about SHA256 Encryption
What is SHA-256?
SHA-256 is a one-way cryptographic hash function designed to turn any string value into a 256 bit (32 byte) string value.
What should I use SHA-256 for?
SHA-256 can be used to obscure whatever text you intend to keep a secret. One example is the way software engineers store passwords, instead of storing your password "Password123" as a plain-text value in a database, the value is first hashed. So if a database is ever compromised, the attacker will just see the hashed value 008c70392e3abfbd0fa47bbc2ed96aa99bd49e159727fcba0f2e6abeb3a9d601 in the database.
Whenever we need to verify an user's password, we take the inputted value and hash it. Then we can compare the hashed value to the value we have in the database.
What is a SHA256 digest?
A SHA256 digest, also known as a Hash or Signature, is the value that is outputted after a value is run through the SHA256 hash algorithm. For example, the SHA256 digest for HelloWorld! is 729e344a01e52c822bdfdec61e28d6eda02658d2e7d2b80a9b9029f41e212dde.
Can a SHA256 hash be reversed, decrypted, or cracked?
No, a SHA256 hash can not be reveresed, you can hash any value but you can't convert the hash back to the original value. This is a principle of hashing/one-way encryption.
Is SHA256 always the same?
Yes, no matter how many times you hash a certain value using the SHA256 hash function, the outputted hash will always be the same.