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Analysis of the evolution of Android permissions. This repository contains the results presented in the paper "Small Changes, Big Changes: An Updated View on the Android Permission System".

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README.md

Android Permission Evolution

Analysis of the evolution of Android permissions. This repository contains the results presented in the paper "Small Changes, Big Changes: An Updated View on the Android Permission System".

Description

Since the appearance of Android, its permission system was central to many studies of Android security. For a long time, the previous description of the architecture provided by Enck et al. the seminal work "Understanding Android Security" was immutably used in various research papers. The introduction of highly anticipated runtime permissions in Android 6.0 forced us to reconsider this model.

In this repository you will find the results of the analysis of the permission evolution in the Android Open Source Project (AOSP). We spit all the permissions into 4 groups:

  • sample - permissions that are declared by the sample apps shipped with the platform source code (appeared from API 21);
  • test - permissions that are declared in the manifest files of packages developed for testing purposes;
  • package - permissions that are declared in various packages that complement the framework, and that are not of test or sample groups;
  • core - permissions that are declared in the core Android manifest file located in the frameworks/base/core/res folder.

The following figure shows the amount of permissions in different Android API versions according to this classification:

After that we analyzed these permissions in details. In particular, we extracted the information to which permission group they belong to, their protection level, protection level flags and permission flags. All the permissions with the corresponding information can be found in the dataset/ directory. Additionally, there you can also find the information about the permission groups.

The directory analysis/ contains the description of the changes related to permission and permission groups happened in the different API versions.

The details qualitative analysis on how the changes influence on the security analysis as well as on application developers can be found in our paper.

Publication

The results of our research were presented at the 19th International Symposium on Research in Attacks, Intrusions and Defenses (RAID 2016). Please use the following bibtex reference to cite our paper:

@inproceedings{SmallChangesBigChanges_Zhauniarovich2016,
    author = {Zhauniarovich, Yury and Gadyatskaya, Olga},
    title = {{Small Changes, Big Changes: An Updated View on the Android Permission System}},
    booktitle = {Proceedings of 19th International Symposium on Research in Attacks, Intrusions and Defenses},
    series = {RAID 2016},
    pages = {346--367},
    year = {2016},
    isbn={978-3-319-45719-2},
    doi={10.1007/978-3-319-45719-2_16},
    url={http://dx.doi.org/10.1007/978-3-319-45719-2_16}
}

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Analysis of the evolution of Android permissions. This repository contains the results presented in the paper "Small Changes, Big Changes: An Updated View on the Android Permission System".

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