businessCard.sol

pragma solidity ^0.4.0;

contract Ownable {
    
    address owner;
    
    function Ownable() public {
        owner = msg.sender;
    }
 
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }
 
    function transferOwnership(address newOwner) public onlyOwner {
        owner = newOwner;
    }
    
}
 
contract BusinessCard is Ownable {
    
    mapping (bytes32 => string) data;
 
    function setData(string key, string value) public onlyOwner {
        data[keccak256(key)] = value;
    }
 
    function getData(string key) public constant returns(string) {
        return data[keccak256(key)];
    }
 
}