SSE (Searchable Symmetric Encryption)

Final project for Fall'19 - 601.745 | Advanced topics in Cryptography

Trapdoor-based Searchable Symmetric Encryption Scheme for Data

In this project, we use trapdoor-based Searchable Symmetric Encryption scheme to run search queries on encrypted data. The input file used to test this implementation is a log file that tracks error reports and categories with over 4000 records.

Implementation notes:

1. Generate a masterkey using masterkey_gen. This creates a 16 byte long key which will be used to encrypt the input file and generate a trapdoor for a keyword. Ensure you choose the correct encoding and length for the key.

    $ python3 masterkey_gen.py > masterkey
   

2. Build an Index using build_index.py:

    $ python3 build_index.py
   

   (a)Phase I: input_index: The input file is encrypted using the masterkey and generates an index

   (b)Phase II: Generate trapdoor: Uses masterkey and keyword as the input, and outputs the trapdoor of keyword.

   

3. sse_query.py: Used to search the encrypted input file for specific keywords that are saved as trapdoors.

    $ python3 sse_query.py