我是Android安全概念的新手。

我一直在阅读一些博客，以了解我们可以使用公钥加密数据并可以使用各自的私钥解密数据。加密似乎没有任何问题，但是当我尝试对其进行解密时，它会抛出：

javax.crypto.BadPaddingException：错误：0407106B：rsa例程：RSA_padding_check_PKCS1_type_2：块类型不是02。

我的代码如下：

public String RSAEncrypt(final String plain, PublicKey publicKey ) throws NoSuchAlgorithmException, NoSuchPaddingException,
    InvalidKeyException, IllegalBlockSizeException, BadPaddingException {

    Cipher cipher = Cipher.getInstance("RSA");
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte [] encryptedBytes = cipher.doFinal(plain.getBytes());
    String encrypted = bytesToString(encryptedBytes);
    System.out.println("EEncrypted?????" + encrypted );
    return encrypted;
}

public String RSADecrypt(String encryptedBytes,PrivateKey privateKey ) throws NoSuchAlgorithmException, NoSuchPaddingException,
    InvalidKeyException, IllegalBlockSizeException, BadPaddingException, NoSuchProviderException {
    Cipher cipher1 = Cipher.getInstance("RSA/ECB/PKCS1Padding");
    cipher1.init(Cipher.DECRYPT_MODE, privateKey);
    byte [] decryptedBytes = cipher1.doFinal(stringToBytes(encryptedBytes));

    String decrypted = new String(decryptedBytes);
    System.out.println("DDecrypted?????" + decrypted);
    return decrypted;
    }

public  String bytesToString(byte[] b) {
    byte[] b2 = new byte[b.length + 1];
    b2[0] = 1;
    System.arraycopy(b, 0, b2, 1, b.length);
    return new BigInteger(b2).toString(36);
}

public  byte[] stringToBytes(String s) {
    byte[] b2 = new BigInteger(s, 36).toByteArray();
    return Arrays.copyOfRange(b2, 1, b2.length);
}

堆栈跟踪如下：

07-28 11:27:35.119: I/System.out(22933): KEYSTORE : String to encrypt = > Hello
07-28 11:27:35.119: I/System.out(22933): KEYSTORE : [B@41bbf4d0
07-28 11:27:38.422: I/System.out(22933): KEYSTORE : String to Decrypt = > UJGAchuDhu3mqH5YPjmYqKBapJYMjJRk9g6HIy8bANooWorzwqgiEo+dOse6Nfq7i0yzw/Wt7TSdTNiYROxehkZvEx/mW5+Niw1CgZ2y9b/ijTeNTF+7aGPrqfDXJ38hUFdTPc6oNl2FVOIafncGOSK9po1JOAYeK0JiA2KrACfPLPjsLQSRzseThyYGxttRM7qbx/N0VTmlTeuNpLFld8Gtw3fHR8UoLGkH/OTFYPLZBVNE8t/oCCy8FpcCu9SGXxF8vh1R4rq15bfyyh9sBU9RuVtoLM0wDSbKixHhNOwwx2Z/A+SHDaQD9C+x3p1AnS9FYZm0Y07E+VYQWqzOpw
07-28 11:27:38.562: W/System.err(22933): javax.crypto.BadPaddingException: error:0407106B:rsa routines:RSA_padding_check_PKCS1_type_2:block type is not 02
07-28 11:27:41.515: D/WifiNative-wlan0(773): doString: SIGNAL_POLL
07-28 11:27:41.515: W/WifiHW(773): QCOM Debug wifi_send_command "IFNAME=wlan0 SIGNAL_POLL"
07-28 11:27:41.525: D/wpa_supplicant(16189): nl80211: survey data missing!
07-2
07-28 11:27:56.612: W/WifiHW(773): QCOM Debug wifi_send_command "IFNAME=wlan0 SIGNAL_POLL"
07-28 11:27:56.612: D/wpa_supplicant(16189): nl80211: survey data missing!
07-28 11:27:56.622: I/wpa_supplicant(16189): environment dirty rate=0 [0][0][0]
07-28 11:27:56.622: D/WifiStateMachine(773): fetchRssiAndLinkSpeedNative RSSI = -62 abnormalRssiCnt = 0 newLinkSpeed = 58
07-28 11:27:56.622: D/WifiStateMachine(773): fetchRssiAndLinkSpeedNative mLinkspeedCount = 2, mLinkspeedSum: 116

我不确定哪里出了问题。