peermerge 0.0.3

Manage JSON-like documents with multiple writers, without a central authority, using a P2P protocol
Documentation 
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use hypercore_protocol::{
    discovery_key as derivate,
    hypercore::{generate_signing_key, SECRET_KEY_LENGTH},
};

pub(crate) use hypercore_protocol::hypercore::SigningKey;

pub(crate) fn generate_keys() -> (SigningKey, [u8; 32]) {
    let signing_key = generate_signing_key();
    let discovery_key = derivate(&signing_key.verifying_key().to_bytes());
    (signing_key, discovery_key)
}

pub(crate) fn discovery_key_from_public_key(public_key: &[u8; 32]) -> [u8; 32] {
    derivate(public_key)
}

pub(crate) fn document_id_from_discovery_key(discovery_key: &[u8; 32]) -> [u8; 32] {
    derivate(discovery_key)
}

pub(crate) fn signing_key_to_bytes(signing_key: &SigningKey) -> Vec<u8> {
    signing_key.to_bytes().to_vec()
}

pub(crate) fn signing_key_from_bytes(signing_key_bytes: &[u8]) -> SigningKey {
    let signing_key_bytes: [u8; SECRET_KEY_LENGTH] = signing_key_bytes.try_into().unwrap();
    SigningKey::from_bytes(&signing_key_bytes)
}

// TODO: p2panda versions of these