Passwords – Hash Functions

Basics A cryptographic hash function is a mathematical algorithm that takes in data of arbitrary size and converts it to a string of a fixed size, which is designed to also be a one-way function, that is, a function which is infeasible to invert.  See Fig 1.  The idea...

Passwords – Cracking Hashes

Password Safeguards Password Strength Password strength or complexity is the goal of having a good password and making it strong against brute-force attacks. ab where a is the possible symbols and b is the length. If you have a 4 letter password containing only [0-9]...

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