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README.md

README.md

Trx Checker

Script for verifying the parameters generated by Trx.

All relevant information about Trx can be found on: http://trx.epfl.ch/

Verification consists of two parts:

  • SlothUnicorn verification: Check if sloth hash generated by Trx is indeed generated from given tweets and image files.
  • Trx verification: Check if generated elliptic curve parameters are OK.

For running the script, you need Python, Sage and Magma installed.

  • Script is implemented in Python.
  • Sage is used because of its interface to Magma.
  • Magma is used for SEA algorithm, because the SEA implementation in Sage does not support early abort and this is huge efficiency problem.

Following command runs the script:

sage -python trx_checker.py

For available options add '-h'. There is one mandatory command line argument:

  • the name of the directory where all the needed files are located. Optional arguments are:
  • -t NUM_THREADS, set number of threads to be used
  • -ss, skip verification of Sloth
  • -sc, skip verification of curve parameters
  • -r , use the information from rejected_curves file in process of curve parameter verification(this will speed up the verification)

Script expects to find given directory in curve_parameters directory, so if you want to check parameters for one of the curves published on the website (http://trx.epfl.ch/), just download the corresponding .zip file end extract it to the curve_parameters directory.

Example: Check parameters for curve located in dir '128_664'
sage -python trx_checker.py 128_664

The result will be dumped in the same directory in the file named 'trx_checker_output.txt'

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