SRA解密报错：Data must start with zero

项目背景：要对打印地址进行加密，用公钥加密后会乱码需要base64 decode一下，但是在解密时报错：javax.crypto.BadPaddingException: Data must start with zero

解决办法：
1.加解密时KeyFactory keyFactory = KeyFactory.getInstance("RSA");
2.将加解密的Cipher cipher = Cipher.getInstance(“RSA”)改为Cipher cipher = Cipher.getInstance(“RSA/ECB/NoPadding”)

困扰了两天的问题解决了，代码如下，希望有次问题的同学不必再走此弯路。

package resources.util.encryption;
 
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
 
import javax.crypto.Cipher;
 
import org.junit.Test;
 
public class EncryptionUtil {
    private static final String RSA = "RSA";
    private static final String RSANOPADDING = "RSA/ECB/NoPadding";
    private static final String PUBLIC_KEY_PATH = "public.key";
    private static final String PRIVATE_KEY_PATH = "private.key";
    private static final String path = Thread.currentThread().getContextClassLoader().getResource("/").getPath();
//    private static final String path = "";
    @Test
    public void generateKey() throws Exception {
        //KeyPairGenerator引擎类用于产生密钥对，JDK(7)默认支持的算法有，DiffieHellman、DSA、RSA、EC
        KeyPairGenerator generator = KeyPairGenerator.getInstance(RSA);
        generator.initialize(512);
        //产生密钥对
        KeyPair keyPair = generator.generateKeyPair();
        //获取公钥
        PublicKey publicKey = keyPair.getPublic();
        //获取私钥
        PrivateKey privateKey = keyPair.getPrivate();
         
        //将公钥与私钥写入文件，以备后用
        writeKey(PUBLIC_KEY_PATH, publicKey);
        writeKey(PRIVATE_KEY_PATH, privateKey);
    }
    
    //公钥加密
    public byte[] SRAEncrypt(String src) throws Exception {
    	PublicKey publicKey= (PublicKey)readKey(path + PUBLIC_KEY_PATH);
    	X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(publicKey.getEncoded());
    	KeyFactory keyFactory = KeyFactory.getInstance(RSA);
    	publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
    	Cipher cipher = Cipher.getInstance(RSANOPADDING);
    	cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    	byte[] data = src.getBytes();
    	int blockSize = 53;//根据异常提示设的53
    	//根据块大小分块，不足一块的部分为一块
        int blocksNum = (int)Math.ceil((1.0*data.length)/blockSize);
        //加密
        for (int i = 0; i < blocksNum; i++) {
            if (i < blocksNum - 1) {
                cipher.doFinal(data, i * blockSize, blockSize);
            } else {
                cipher.doFinal(data, i * blockSize, data.length - i * blockSize);
            }
        } 
    	return data;
    }
    
    //私钥解密
    public String SRADecrypt(byte[] data) throws Exception{
    	PrivateKey privateKey= (PrivateKey)readKey(path + PRIVATE_KEY_PATH);
    	PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    	KeyFactory keyFactory = KeyFactory.getInstance(RSA);
    	privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
    	Cipher cipher = Cipher.getInstance(RSANOPADDING);
    	cipher.init(Cipher.DECRYPT_MODE, privateKey);
    	int blockSize = 64;//根据异常提示设的64
    	//根据块大小分块，不足一块的部分为一块
    	int blocksNum = (int)Math.ceil((1.0*data.length)/blockSize);
    	//解密
    	for (int i = 0; i < blocksNum; i++) {
            if (i < blocksNum - 1) {
                cipher.doFinal(data, i * blockSize, blockSize);
            } else {
                cipher.doFinal(data, i * blockSize, data.length - i * blockSize);
            }
        } 
    	return new String(data);
    }
    
    public void writeKey(String path, Key key) throws Exception {
        FileOutputStream fos = new FileOutputStream(path);
        ObjectOutputStream oos = new ObjectOutputStream(fos);
        oos.writeObject(key);
        oos.close();
    }
     
    public Key readKey(String path) throws Exception {
        FileInputStream fis = new FileInputStream(path);
        ObjectInputStream bis = new ObjectInputStream(fis);
        Object object = bis.readObject();
        bis.close();
        return (Key)object;
    }
    
    @Test
    public void testEncryptAndDecrypt() throws Exception {
        Cipher cipher = Cipher.getInstance(RSA);
        //读取公钥，进行加密
        PublicKey publicKey= (PublicKey) readKey("component/"+PUBLIC_KEY_PATH);
        cipher.init(Cipher.ENCRYPT_MODE, publicKey);
        //加密
        String sendInfo = "我的明文";
        byte[] results = cipher.doFinal(sendInfo.getBytes());
        
        //读取私钥，进行解密
        PrivateKey privateKey = (PrivateKey) readKey("component/"+PRIVATE_KEY_PATH);
        cipher.init(Cipher.DECRYPT_MODE, privateKey);
        //解密
        byte[] deciphered = cipher.doFinal(results);
        //得到明文
        String recvInfo = new String(deciphered);
        System.out.println(recvInfo);
    }
     
    @Test
    public void testSRA() throws Exception{
    	PublicKey publicKey= (PublicKey)readKey("component/" + PUBLIC_KEY_PATH);
    	X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(publicKey.getEncoded());
    	KeyFactory keyFactory = KeyFactory.getInstance(RSA);
    	publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
    	Cipher cipher = Cipher.getInstance(RSA);
    	cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    	byte[] result = cipher.doFinal("yuanyuan".getBytes());
    	
    	PrivateKey privateKey= (PrivateKey)readKey("component/" + PRIVATE_KEY_PATH);
    	PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    	privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
    	cipher = Cipher.getInstance(RSANOPADDING);
    	cipher.init(Cipher.DECRYPT_MODE, privateKey);
    	result = cipher.doFinal(result);
    	System.out.println(new String(result));
    }
}