Most of this code is based on https://github.com/xeals/signal-back
signal-back is licensed under the Apache License, Version 2.0. The decrypt package it provided is largely derivative of Signal for Android (specifically this file) which is licensed under the GPLv3. Since works that are derivative of GPLv3 material must themselves be licensed under the GPLv3, this work is also licensed under the GPLv3, despite also deriving from work that's licensed under the Apache License, Version 2.0.
- The
decryptpackage was based on types/backup.go - The
smstypepackage was based on this function and this enum - The
mimetoextpackage was based on this function
None of this is affiliated with Signal, the 501(c)(3) nonprofit trademark holder. This is not a project made by Signal, or officially blessed in any way by them.