mvn compile

mvn exec:java -Dexec.mainClass="com.applied_crypto.Circuit" -Dexec.args="./circuit.json"

If everything went well, you should expect to see the following output (in between a lot of noisy [INFO] lines from the build tool):

reading circuit...
[{w7=0}]

This means the output wire named w7 has a 0 value.

You can modify the circuit.json file to try out different input values.

We provide a python script, run_adder.py, to help you evaluate the example circuit (32-bit adder) on numeric inputs. You provide it with the name of the JSON file, and two numeric inputs (decimal numbers). The python script converts the decimal numbers to bits, and writes the bits into the JSON file.

python run_adder.py <./32adder.json> <x> <y>

As you implement your tasks in Evaluator.java, you can use the following command to execute Bob's role, the circuit evaluator (this will print an error until you implement something!):

mvn exec:java -Dexec.mainClass="com.applied_crypto.Evaluator" -Dexec.args="./gar_circuit.json"

We include the gar_circuit.json as an example of a garbled circuit JSON file generated from our reference implementation. After you implement your own Garbled Circuit Evaluator, you can change this filename to point to your own generated files as well.

As you implement your tasks in Generator.java, you can use the following command to execute Alice's role, the circuit generator (this will print an error until you implement something!):

mvn exec:java -Dexec.mainClass="com.applied_crypto.Generator" -Dexec.args="./circuit.json"

We provide a precompiled (jar file) implementation of the garbled circuit evaluator. You can run this to check if your garbled circuit implementation matches ours exactly.

java -jar gc-reference-evaluator.jar ./gar_circuit.json