# tea3-py

## install

```bash
python -m venv .venv
source .venv/bin/activate
pip install -e .
```

## run tests

```bash
pip install pytest
pytest
```

## run linear and differential bias empirical tests

in the venv

```bash
tea3-linear-bias
tea3-differential-bias
```

## derive lookup tables

```bash
lookup-tables
```

## run sagemath script

`deactivate` the venv first, then with sagemath installed:

```bash
./run_sage.sh
```

Modes are:  
  1) Classic inspection  
  2) Advanced inspection with forced 0 or 1 bits  
  3) Exhaustive variable-change search  
  4) S box analysis  
  5) Variable XOR  
  6) F31, F32 analysis  
  7) Exhaustive XOR search  
  8) Cube attack search  
  9) Precompute and save model  
  10) Load model  


n steps can be precomputed and then loaded for the offline part of the cube attack with the menu entry 9 and 10.