RSA Data must start with zero问题解决方法

RSA工具使用公钥加密之后生成byte[] ，直接解密是没有问题的，但将byte[]通过Base64.encode(byte[])之后得到的字符串重新getBytes()去解密是会出现RSA Data must start with zero的问题的。

解决方法：

/**
* 将加密后的字节数组转换为对象
*
* @MethodName: bytesToString
* @Description:
* @param encrytpByte
* @return
* @throws
*/
public static String bytesToString(byte[] encrytpByte) {
String result = "";
for (Byte bytes : encrytpByte) {
result += bytes.toString() + " ";
}
return result;
}

/**
* 公钥加密
*
* @MethodName: encrypt
* @Description:
* @param publicKey
* @param obj
* @return
* @throws
*/
public static byte[] encrypt(RSAPublicKey publicKey, byte[] obj) {
if (publicKey != null) {
try {
Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
return cipher.doFinal(obj);
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}

/**
* 私钥解密
*
* @MethodName: decrypt
* @Description:
* @param privateKey
* @param obj
* @return
* @throws
*/
public static byte[] decrypt(RSAPrivateKey privateKey, byte[] obj) {
if (privateKey != null) {
try {
Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, privateKey);
return cipher.doFinal(obj);
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}测试方法：
@Test
public void testRSA() throws Exception{

String publicKey=EhcacheUtil.get(StaticProperty.WMS_OPEN_API_RSA_PUBLIC_KEY).toString();

String privateKey=EhcacheUtil.get(StaticProperty.WMS_OPEN_API_RSA_PRIVATE_KEY).toString();

String platformCode="1234",tenantCode="10000";

byte [] bytes=SAASTokenManager.generateBytesToken(publicKey, platformCode, tenantCode);

System.out.println("RSA bites 加密:"+new String(bytes));

System.out.println("RSA bites 解密:"+new String(RSAUtils.decryptByPrivateKey(bytes, privateKey)));

// 将bytes转换为String
String bytesStr = RSAUtils.bytesToString(bytes);

String[] strArr = bytesStr.split(" ");

int len = strArr.length;

// 转回bytes
byte[] clone = new byte[len];

for (int i = 0; i < len; i++) {
clone[i] = Byte.parseByte(strArr[i]);
}

System.out.println("RSA bites 解密:"+new String(RSAUtils.decryptByPrivateKey(clone, privateKey)));

}