cipher.des

The module cipher.des of lua-cipher provides the block ciphers DES and
Triple DES (EDE with two or three keys) in the modes ECB, CBC (PKCS#7
padding), CFB, CFB8, OFB and CTR, in one call or as a stream, and a
reusable key schedule object for single blocks, for reading and writing
legacy formats. Own self-contained C code without table lookups, no
external library. Data may be Lua strings or carray objects, read
without copying; the output can be written directly into a carray.