crypto-modules-extra: crypto-modules-extra (Extra Cryptographic Kernel Modules) crypto-modules-extra: crypto-modules-extra: A collection of extra cryptographic kernel modules, namely: crypto-modules-extra: twofish, twofish_common, rmd160, serpent, gf128mul, wp512 crypto-modules-extra: and xts. Currently, TrueCrypt is recommended to use this crypto-modules-extra: package crypto-modules-extra: crypto-modules-extra: crypto-modules-extra: crypto-modules-extra: crypto-modules-extra: