Utilities to generate test vectors for the data-driven Hallacoin tests.
Usage:
PYTHONPATH=../../test/functional/test_framework ./gen_key_io_test_vectors.py valid 50 > ../../src/test/data/key_io_keys_valid.json
PYTHONPATH=../../test/functional/test_framework ./gen_key_io_test_vectors.py invalid 50 > ../../src/test/data/key_io_keys_invalid.json