Creating & Issuing

Keys are identified by the keccak256 hash of: the service id, the time the key is created, the address the key is issued to. This makes them impractical to regenerate so the key should be stored.

A service owner can create a key by passing a service to the createKey function. This creates a new key for that service and issues it to the service owner's account. A transaction will be returned with a log containing a KeyCreated event denoting the _owner, and the new _key.

Alternatively you can pass an account address and service to the issueKey function to directly issue a key to any account address.

Solidity

    event KeyCreated(address indexed _owner, bytes32 indexed _key);

    function createKey(bytes32 service) 
        public
        ownsService(service)        
    {
        issueKey(service, msg.sender);
    }
    
    function issueKey(bytes32 service, address issueTo) 
        public
        ownsService(service)  
    {
        bytes32 id = keccak256(service, now, issueTo);
        require(keys[id].owner == address(0));
        keys[id].owner = issueTo;       
        keys[id].service = service;
        keyList.push(id);        
        KeyCreated(issueTo, id);        
    }