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# Rabe
rabe is a rust library implementing several Attribute Based Encryption (ABE) schemes using a modified version of the `bn` library of zcash (type-3 pairing / Baretto Naering curve). The modification of `bn` brings in `serde` instead of the deprecated `rustc_serialize`.
This is a rust crate and comes with C bindings. For integration in distributed applications head over to [rabe-keyserver](ttps://github.com/Fraunhofer-AISEC/rabe-keyserver), which wraps rabe in a standalone REST API webserver.
# Implemented Ciphertext Policy Schemes (CP-ABE)
## BDABE CP-ABE
Georg Bramm, Mark Gall, Julian Schütte , "Blockchain based Distributed Attribute-based Encryption". In Proceedings of the 15th International Joint Conference on e-Business and Telecommunications (ICETE 2018) - Volume 2: SECRYPT, pages 99-110. Available from https://doi.org/10.5220/0006852602650276
## AC17 CP-ABE
Shashank Agrawal, Melissa Chase, "FAME: Fast Attribute-based Message Encryption", (Section 3). In Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security 2017. Available from https://eprint.iacr.org/2017/807.pdf
## AW11 CP-ABE
Lewko, Allison, and Brent Waters, "Decentralizing Attribute-Based Encryption.", (Appendix D). In Eurocrypt 2011. Available from http://eprint.iacr.org/2010/351.pdf
## BSW CP-ABE
John Bethencourt, Amit Sahai, Brent Waters, "Ciphertext-Policy Attribute-Based Encryption" In IEEE Symposion on Security and Privacy, 2007. Available from https://doi.org/10.1109/SP.2007.11
## MKE08 CP-ABE
S Müller, S Katzenbeisser, C Eckert , "Distributed Attribute-based Encryption". Published in International Conference on Information Security and Cryptology, Heidelberg, 2008. Available from http://www2.seceng.informatik.tu-darmstadt.de/assets/mueller/icisc08.pdf
# Implemented Key Policy Schemes (KP-ABE)
## AC17 KP-ABE
Shashank Agrawal, Melissa Chase, "FAME: Fast Attribute-based Message Encryption". In Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security 2017. Available from https://eprint.iacr.org/2017/807.pdf
## LSW KP-ABE
Allison Lewko, Amit Sahai and Brent Waters, "Revocation Systems with Very Small Private Keys". In IEEE Symposium on Security and Privacy, 2010. SP'10. Available from http://eprint.iacr.org/2008/309.pdf
# Building rabe
In order to compile and test:
- install rust nightly
- git clone library
- install build-essential
- and then run 'cargo build && RUST_BACKTRACE=1 cargo test -- --nocapture'
In order to run on the console use
- target/debug/rabe
For example, in order to create msk and pk of an AC17 KP-ABE scheme run:
```bash
$ ./target/debug/rabe --scheme AC17KP setup
```
To compile the C testfile:
```bash
gcc test.c -lrabe -L./target/debug -o test
```