Libgcrypt is a general purpose cryptographic library originally based on code from GnuPG. > Website…
Cryptsetup is utility used to conveniently setup disk encryption based on DMCrypt kernel module.
These include plain dm-crypt volumes, LUKS volumes, loop-AES and TrueCrypt (including VeraCrypt extension) format.
Project also includes veritysetup utility used to conveniently setup DMVerity block integrity checking kernel module.