https://github.com/cryptimeleon/predenc
Predenc contains predicate encryption implementations as well as key encapsulation mechanisms based on such implementations, for example attribute-based encryption.
https://github.com/cryptimeleon/predenc
abe abe-kem ciphertext-policy encryption ibe java kem key-policy predicate-encryption
Last synced: about 1 month ago
JSON representation
Predenc contains predicate encryption implementations as well as key encapsulation mechanisms based on such implementations, for example attribute-based encryption.
- Host: GitHub
- URL: https://github.com/cryptimeleon/predenc
- Owner: cryptimeleon
- License: apache-2.0
- Created: 2021-01-25T09:49:59.000Z (about 5 years ago)
- Default Branch: develop
- Last Pushed: 2023-04-05T14:06:40.000Z (almost 3 years ago)
- Last Synced: 2025-10-18T20:00:11.867Z (4 months ago)
- Topics: abe, abe-kem, ciphertext-policy, encryption, ibe, java, kem, key-policy, predicate-encryption
- Language: Java
- Homepage:
- Size: 402 KB
- Stars: 5
- Watchers: 2
- Forks: 0
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
- Citation: CITATION.cff
Awesome Lists containing this project
README
# Predenc
The Cryptimeleon Predenc project contains various predicate encryption implementations such as attribute-based encryption or identity-based encryption.
Furthermore, it contains key encapsulation mechanisms based on predicate encryption schemes.
## Security Disclaimer
**WARNING: This library is meant to be used for prototyping and as a research tool *only*. It has not been sufficiently vetted for use in security-critical production environments. All implementations are to be considered experimental.**
## Implemented Schemes
* **Encryption schemes**:
* Attribute-based:
* Waters' ciphertext-policy attribute-based encryption scheme [Wat11]
* Goyal et al.'s key-policy attribute-based encryption scheme [GPSW06]
* Identity-based:
* Fuzzy identity-based encryption [SW05]
* Identity based encryption from the Weil pairing [BF01]
* **Key encapsulation mechanisms (KEM)**: We implement several KEMs based on the encryption schemes implemented in this library. Predenc provides KEMs for [Wat11], [GPSW06] and [SW05].
## Quickstart
### Installation With Maven
To add the newest Predenc version as a dependency, add this to your project's POM:
```xml
org.cryptimeleon
predenc
1.0.1
```
### Installation With Gradle
Predenc is published via Maven Central.
Therefore, you need to add `mavenCentral()` to the `repositories` section of your project's `build.gradle` file.
Then, add `implementation group: 'org.cryptimeleon', name: 'predenc', version: '1.0.1'` to the `dependencies` section of your `build.gradle` file.
For example:
```groovy
repositories {
mavenCentral()
}
dependencies {
implementation group: 'org.cryptimeleon', name: 'predenc', version: '1.0.1'
}
```
### Tutorials
Predenc uses the mathematical facilities of our [Math library](https://github.com/cryptimeleon/math).
Therefore, we recommend you go through our [short Math tutorial](https://cryptimeleon.github.io/getting-started/5-minute-tutorial.html) to get started.
## Miscellaneous Information
- Official Documentation can be found [here](https://cryptimeleon.github.io/).
- The *For Contributors* area includes information on how to contribute.
- Predenc adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
- The changelog can be found [here](CHANGELOG.md).
- Predenc is licensed under Apache License 2.0, see [LICENSE file](LICENSE).
## Authors
The library was implemented at Paderborn University in the research group ["Codes und Cryptography"](https://cs.uni-paderborn.de/en/cuk/).
## References
[BF01] Dan Boneh and Matt Franklin. "Identity-Based Encryption from the Weil Pairing". In: Advances in Cryptology — CRYPTO 2001. CRYPTO 2001. Ed. by Joe Kilian. Vol. 2139. Lecture Notes in Computer Science. Springer, Berlin, Heidelberg, August 2001, pp. 213-229.
[SW05] Amit Sahai and Brent Waters. "Fuzzy Identity-Based Encryption". In: Advances in Cryptology – EUROCRYPT 2005 (pp. 457–473). Springer Berlin Heidelberg.
[GPSW06] Vipul Goyal, Omkant Pandey, Amit Sahai, and Brent Waters. "Attribute-based encryption for fine-grained access control of encrypted data". In: ACM Conference on Computer and Communications Security. ACM, 2006, pages 89–98.
[Wat11] Brent Waters. Ciphertext-policy attribute-based encryption: An
expressive, efficient, and provably secure realization. In Public Key
Cryptography. Springer, 2011, pp. 53–70.