CATEGORY
Showing 3 post(s) in this category.
Argon2 won the 2015 Password Hashing Competition by making brute-force attacks expensive in RAM, not just CPU time — closing off the GPU and ASIC cracking farms that broke older schemes. Here's how memory-hardness works.
TLS 1.3 and the Signal Protocol both lean on the same small, elegant primitive to turn a shared secret into however many separate keys they actually need. Here's how HKDF's extract-then-expand design works.
For nearly two decades, PBKDF2's answer to password cracking was simple: make every guess expensive by repeating a hash thousands of times. Here's how it works, and why memory-hard successors like Argon2 eventually surpassed it.
