As specified on the website, this image is explicitly "placed in the public domain".
Public domainPublic domainfalsefalse
This image has been released into the public domain by its creator and original copyright holder. This applies worldwide. As such you are entirely free to reproduce it, create derivative works, or make commercial use of it as you see fit, without any requirement to give the creator credit. However, as a courtesy, a link back to https://signal.org/docs/specifications/doubleratchet/#ipr website would be appreciated.
In case this is not legally possible:
The copyright holder grants any entity the right to use this work for any purpose, without any conditions, unless such conditions are required by law. However, as a courtesy, a link back to https://signal.org/docs/specifications/doubleratchet/#ipr website would be appreciated.
This image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.
It is recommended to name the SVG file “Double Ratchet Algorithm.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
File history
Click on a date/time to view the file as it appeared at that time.
Diagram of the Double Ratchet Algorithm. This diagram represents a [https://signal.org/docs/specifications/doubleratchet/ Double Ratchet Algorithm] as used in the Signal Protocol. See Double Ratchet Algorithm of the Signal Protocol. As specified on the [https://signal.org/docs/specifications/doubleratchet/#ipr website], this image is explicitly "placed in the public domain". {{PD-link|https://signal.org/docs/specifications/...