ASIC/FPGA attacks on modern password hashes Weaker Stronger PBKDF2-HMAC-SHA-1 PBKDF2-HMAC-SHA-256, sha256crypt PBKDF2-HMAC-SHA-512, sha512crypt bcrypt scrypt yescrypt It is a sound approach to consider attacks with ASICs, but in practice attacks with less flexible devices are also relevant