package civitas.crypto.parameters;
   
   import java.util.Map;
   
   import org.springframework.stereotype.Controller;
   
   import civitas.common.VoteChoice;
   import civitas.crypto.CryptoException;
   import civitas.util.CivitasBigInteger;
  
  @Controller
  public class DecodeChoice {
  	public VoteChoice apply(final Map<CivitasBigInteger, VoteChoice> map, final CivitasBigInteger m)
  			throws CryptoException {
  		VoteChoice found = map.get(m);
  		if (null == found) {
  			throw new CryptoException("Brute force decoding failed");
  		}
  		return found;
  	}
  }