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MrSign

MrSign is an application used for generate and verify a signature by of the contents of a directory . This is application is based on client/server architecture and It is developed in Go language. This is a POC version and we are using it in combination with FIT.

The mechanism to calculate the signature is created and delevoped by Marcello Russo @markel1974. It uses the message authentication method provided in the HMAC protocol with MD5, obtained from the union of a series of variables. This signature is generated and stored on a server together with other elements, such as: SID (Signature ID), server (timestamp), client username, etc.

The following flow explain it better.

Prerequisites

Make sure you have installed all of the following prerequisites on your development machine:

• Download & Install Golang compiler.

Cloning the github repository

The recommended way to get FIT is to use git to directly clone the FIT repository:

git clone git@github.com:zitelog/mrsign.git mrsign

This will clone the latest version of the FIT repository to a mrsign folder.

Compile

Once you've downloaded MrSign and installed all the prerequisites:

• go in mrsign folder:

cd mrsign

• compile it:

go build

Usage

$ ./mrsign.exe -h

arguments: -h, --help show this help message and exit

-c (string) the config file path (default "config.json").

-f (string) client signature filename

-g (string) generate hash

-k generate key

-l (string) logfile path

-p (string) client path

-r (string) server url (default "http://127.0.0.1:8123")

-s start local server

-sp (string) server path

-t (string) client host

-u (string) client user

-v show version

Example

First run MrSign as a local server:

./mrsign.exe -s
starting server 127.0.0.1:8123
FolderName:

./mrsign.exe -t hostname -u username -r server_url -p path_of_directory_that_you_make_a_signature -f signature.txt -sp server_db_of_signatures_path