adenzhang / ipsecdecryptor

IPsecDecrytor

Decrypt ESP packt with SA.

Created by Zhang Jie on Aug 7 2014.

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Developed in Android Studio, this project has two modules: java library IPsecDecrypt and android application app.

-- Module IPsecDecrypt: A java library provides common classes to read pcap file and decrypt ESP packets. SA files should be given for decryption. Below are all potentially supported decryption algorithms.

1. AES-CBC (tested already)
2. AES-CTR.
3. 3DES-CBC.
4. DES-CBC.
5. CAST5-CBC.
6. BLOWFISH-CBC.
7. TWOFISH-CBC.
8. AES-GSM.

Module app: Android applciation to demo decryption.

-- v0.1 What Done: - pcap reader. - IP info parser. - Decryption framwework. - SA file reader. - SA manager to store SA's. - Algorithms: AES-CBC, 3DES-CBC (not tested yet).

TODO: - pcap write. - SA generation on rooted phones. - Implement more decryption algorithms.