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Finprint Protocol

Kadena smart contracts for the Finprint protocol, as described in the Finprint whitepaper. Written in the Pact smart contract language.

Contributions are welcome.

Specifications

This implementation of the protocol uses X25519-Chacha20-Poly1305 for encryption/decryption, and blake2b for hashing.

All binary data is encoded in unpadded Base64URL. Public and private keys are encoded in hex format.

Clients using these contracts should note that the combined secret posted by the sharing group and the secretSharesCid included in each lockbox follow the Finprint CID format.

Installation

Download the latest version of pact, e.g. from https://github.com/kadena-io/pact/releases or through Homebrew via:

brew install kadena-io/pact/pact

The contracts require Pact v3.3.1 or higher.

Deploy and initialize contracts locally

yarn
yarn compile
yarn start

# In another tab:
yarn deploy

Smart contracts

The smart contracts in contracts/ are as follows:

  • finprint.pact: The core Finprint protocol, including staking functions.
  • finprint-token.pact: The Finprint token, based on the Pact fungible token interface defined in fungible-v1.pact

Unit tests

Run all unit tests:

yarn test

Use the -v option to print out failures or -vv to print all test output. A glob or the name of a specific .repl file can be passed as a positional argument to run specific tests.

Alternatively, the tests can be run in the pact interpreter as follows:

pact> (load "test/finprint.repl")
pact> (load "test/finprint-token.repl")