Secure Distributed Network Time Synchronization
Time keeping is crucial for security, privacy, and anonymity. Sdwdate is a Tor friendly replacement for rdate and ntpdate that sets the system's clock by communicating via onion encrypted TCP with Tor onion webservers.
At randomized intervals, sdwdate connects to a variety of webservers and extracts the time stamps from http headers (RFC 2616). Using sclockadj option, time is gradually adjusted preventing bigger clock jumps that could confuse logs, servers, Tor, i2p, etc.
This package contains the sdwdate time fetcher and daemon. No installation on remote servers required. To avoid conflicts, this daemon should not be enabled together with ntp or tlsdated.
How to install sdwdate using apt-get
1. Download the APT Signing Key.
wget https://www.whonix.org/derivative.asc
Users can check Whonix Signing Key for better security.
2. Add the APT Signing Key..
sudo cp ~/derivative.asc /usr/share/keyrings/derivative.asc
3. Add the derivative repository.
echo "deb [signed-by=/usr/share/keyrings/derivative.asc] https://deb.whonix.org bullseye main contrib non-free" | sudo tee /etc/apt/sources.list.d/derivative.list
4. Update your package lists.
sudo apt-get update
5. Install sdwdate.
sudo apt-get install sdwdate
How to Build deb Package from Source Code
Can be build using standard Debian package build tools such as:
dpkg-buildpackage -b
See instructions. (Replace generic-package with the actual name of this package sdwdate.)
- A) easy, OR
- B) including verifying software signatures
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