MD5

This package provides MD5sum capabilities to LuaJit, leveraging the FFI library. Note that it does not work with Lua.

Installation

$ torch-pkg install md5

Usage

Require md5. Note that it does not create a global table.

> md5 = require 'md5'
> print(md5.string('hello world'))
5eb63bbbe01eeed093cb22bb8f5acdc3

Two functions are provided:

md5.string(<string>)

or

md5.file(<filename>)

md5.string() returns a string. md5.file() returns a string if the given filename is valid, nil otherwise.

Advanced usage

For finer control over the library, one can also use the following functions:

md5.init(MD5_CTX *);
md5.update(MD5_CTX *, unsigned char *, unsigned int)
md5.final(unsigned char [16], MD5_CTX *);

Note that the functions expect FFI types. MD5_CTX is defined through FFI with:

typedef struct {
  UINT4 state[4];                                   /* state (ABCD) */
  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
  unsigned char buffer[64];                         /* input buffer */
} MD5_CTX;

For more details, please refer to the RFC1321 documentation.