timestamp

trusted timestamp script written in POSIX sh

Demo

Features

• create/remove trusted timestamp for git commits
• verify trusted timestamp
• show information of a timestamp

Usage

timestamp [command] [revision]

Command:

• create: Create a timestamp
• verify: Verify an existing timestamp
• examine: Show the full text output of an existing timestamp
• remove: Remove an existing timestamp
• push: Push the timestamp namespace to origin.
• fetch: Fetch the timestamp namespace from origin.
• version: Show version
• help: Show help message

By default, if a revision is not specified, the latest revision will be used.

Dependencies

• a POSIX shell
• curl
• git
• openssl or libressl

Configuration

timestamp is configured through the following environment variables:

• TSA_URL: url of the time stamp authority
  • default: https://freetsa.org/tsr
• TSA_CAFILE: location of time stamp authority's CA certificate
  • default: ~/tsa-cacert.pem
• TSA_BLOBREF: name of git blob uses for storing timestamp
  • default: tsa-blobs

Installation

to install, run:

$ make install

to uninstall, run:

$ make uninstall

Manual Installation

Place the executable timestamp in your $PATH. For example, you could also include this directory in $PATH by adding the following in your profile:

PATH=$PATH:path/to/timestamp

To get zsh completion working, place the _timestamp completion script in your fpath. For example, you could add the following to your ~/.zshrc to include the directory that contains the _timestamp file in your $fpath:

fpath=(path/to/timestamp/completion/zsh $fpath)

To get bash completion working, source the timestamp.bash completion script. For example, add the following to your ~/.bashrc:

. path/to/timestamp/completion/bash/timestamp.bash

Reload your shell and the completion script should be working

To get access to the manpage, either place timestamp.1 in your $MANPATH or include this directory in the $MANPATH by adding the following in your profile:

MANPATH=$MANPATH:path/to/timestamp