🔒 hashword

Command-line password generator by calculating hashes

Winner of the 2022 Congressional App Challenge!

Algorithm

1. Prompt for seed and key
2. Generate a hash of 46 integers between 0 and 255 with Argon2 using seed and key
3. Take the first 16 integers and convert them to a character string res using modulo indices
4. Using the next 16 integers:
   1. If the index is even, store the integer into the variable pos
   2. If the index is odd, replace index pos of res with an indexed LOWERCASE character
5. Repeat step 4 for UPPERCASE, NUMERIC, and SPECIAL characters
   Halve the number of integers taken in each iteration
   It can be proved that this produces at least 1 of each type of character in the final result
6. Print res and copy it to the system clipboard

Argon2 config

Variant: Argon2id
Version: 13
Memory cost: 65536
Iterations: 4
Parallelism factor: 8
Hash length: 8