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I'm setting up my database to receive hashed passwords and not accept plain text.
Would I go something like this?
create table User( username varchar(20) not null, password varchar(64) not null, ); 
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It's always 64 characters, which can be determined by running anything into one of the online SHA-256 calculators.
SHA256 (Secure Hash Algorithm) is a cryptographic hash function designed by the National Security Agency (NSA). SHA256 produces a 256-bit (32-byte) hash value, typically rendered as a hexadecimal number, 64 digits long.
A sha-256 hash has 64 characters, 32 hex combinations, because a hex has 2 characters. Above is a hash where the hex combinations are separated so you can count 32. There are 16 characters available to hex 0-9&a-f and 16^2 or 256 combinations in hex.
The hash size for the SHA256 algorithm is 256 bits.
Yes, a SHA256 is always 256 bits long, equivalent to 32 bytes, or 64 bytes in an hexadecimal string format. You can even use char(64) instead of varchar(64) since the size won't change.
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