Shamir's secret sharing.

1. Installation.

Used modules:

• argparse
• difflib
• random
• functools

2. Run the code.

One can find some help for the main programs by running:

• python src/make_shares.py -h or python src/make_shares.py --help
• python src/open_vault.py -h or python src/open_vault.py --help

Example. Suppose Alice, Bob and Charlie want to share 987654321, by requiring at least 2 keys and with following priorities:

• Alice has priority 3.
• Bob has priority 1.
• Charlie has priority 1.

Note: if dave has priority n, dave will receive n distinct keys.

To simulate such a scenario:

• run python src/make_shares.py --holders alice=3 bob=1 charlie=1 -s 987654321 -m 2

Then, if any combination of the above members is here, run python src/open_vault.py --present member1 member2

For example python src/open_vault.py -p alice or python src/open_vault.py -p alice charlie will unlock the secret.
But, python src/open_vault.py -p bob charlie won't.