Hashing in Python
as of 2021BFeb25

from hashlib import sha256
h = sha256()
h.update(b'python1990K00L')
hash = h.hexdigest()
print(hash)

in php
$hash=hash(sha256,"python1990K00L")
or
string sha256(string $str) #returns 32 bytes

My hashing process
save the user_name (or email address)
save the rightmost 9 digits of the unix date/time(secs) when the user_name / password was last created
1. create salt=sha256(first 64 characters of text in my chosen book [including spaces]) eor -1

2. pad out all 3 using left(phrase||salt,64)

3. use sha256 to hash the email address+salt
   use sha256 to hash the 9-unix date/time+salt
   use sha256 to hash the password+salt

4. eor the 3 hashes together
5. save the resulting hash as "hashed_value"

Question: Can the string (to be hashed) be greater than 64 bytes long?

Always incorporate a 'salt', which is usually derived from a hash phrase.

Source 1: https://auth0.com/blog/hashing-passwords-one-way-road-to-security/
Source 2: https://auth0.com/blog/adding-salt-to-hashing-a-better-way-to-store-passwords/#:~:text=A%20cryptographic%20salt%20is%20made,compute%20them%20using%20the%20salts.
Source 3: https://www.tools4noobs.com/online_php_functions/sha256/

See text file: ???.txt

/Hashing_In_Python.txt