dpilch / solmd Goto Github PK

pragma solidity ^0.4.21;
/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

pragma solidity ^0.4.23; 

import "./ERC20Basic.sol";

/**
 * @title ERC20Handler
 */
contract ERC20Handler is ERC20Basic{
 // 
}

/**
@title GavCoin
@author Gavin Wood
*/
contract GavCoin {
	
	/**
	@title Test
	@dev Testing
	@param nbr a number
	*/
	function test(uint nbr) {
		nbr++;
	}
}

pragma experimental ABIEncoderV2;
pragma solidity ^0.4.24;

contract Verifier
{
    // Represents the output of an ECDSA signature
    struct Signature {
        uint8 v;
        bytes32 r;
        bytes32 s;
    }

    /**
    @notice validates an address signed a message hash
    @param _addr public address of the private key that signed the message hash
    @param messageHash a keccak256 hash of the message being signed
    @param sig the signer's ECDSA signature of type Signature struct
    @return {
        "done": "true if the public address signed the message hash"
    }
    */
    function validateSignature(address _addr, bytes32 messageHash, Signature sig)
    public pure
    returns (bool done) {
        return ecrecover(messageHash, sig.v, sig.r, sig.s) == _addr;
    }
}