Packages with the scrypt use flag

dev-python / passlib : Password hashing framework supporting over 20 schemes

  • accelerated scrypt algoythm support

net-misc / bfgminer : Modular Bitcoin ASIC/FPGA/GPU/CPU miner in C

  • Enable support for scrypt mining algorithm

net-vpn / tor : Anonymizing overlay network for TCP

  • Use app-crypt/libscrypt for the scrypt algorithm