GPU attacks on modern hashes PBKDF2-HMAC-SHA-1 PBKDF2-HMAC-SHA-256 sha256crypt PBKDF2-HMAC-SHA-512 sha512crypt scrypt at up to ~1 MB (misuse) Litecoin at 128 KB is ~10x faster on GPU vs. CPU bcrypt (uses 4 KB) scrypt at multi-megabyte memory Revised scrypt with TMTO defeater Weaker Stronger