java加密解密2 非对称加密解密

分对称的加密解密

 

package endual;

import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;

import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;

public class SecretKeyTest {

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {

		publicEnrypt() ;
		privateDecrypt() ;
		
	}

	//共有加密
	private static void publicEnrypt() throws Exception, Exception {
		// TODO Auto-generated method stub
		Cipher cipher = Cipher.getInstance("RSA") ; //非对称加密算法
		Key arg1 = null;
		KeyPairGenerator keyParGenerator = KeyPairGenerator.getInstance("RSA") ;
		KeyPair keyPair =  keyParGenerator.generateKeyPair() ;
		PrivateKey pirvateKey = keyPair.getPrivate() ; //私有密匙
		PublicKey publicKey = keyPair.getPublic() ; //共有密匙
		cipher.init(Cipher.ENCRYPT_MODE, publicKey) ;
		
		
		
		
	}
	
	
//私有解密
	private static void privateDecrypt() {
		// TODO Auto-generated method stub
		
	}

}

 

 

主要是从解密加密的算法上去考虑的，还有就是key 产生 的类。百度下应该有详细的代码的