RSA 错误的填充异常



我正在尝试在Android上加密RSA数据并将其发送到服务器(spring(。获取 BadPaddingException :

方法:服务器以字符串形式发送公钥,我将其转换为公钥对象,并在加密后从应用程序发送数据作为字符串。服务器有一个私钥字符串,它被转换为公钥对象,然后数据被解密。

任何帮助将不胜感激。

密钥的生成:

    public static KeyPair generateKeyPairRSA()  {
    try {
        SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(1024, random);
        KeyPair keyPair = keyGen.generateKeyPair();
        return keyPair;
    } catch (Exception e) {
        Log.d(TAG,e.getLocalizedMessage());
    }
    return null;
}

public byte[] RSAEncrypt(final String plain, PublicKey publicKey) throws Exception {
    Cipher cipher = Cipher.getInstance(ALGO_RSA);
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte[] encryptedBytes = cipher.doFinal(plain.getBytes());
    return encryptedBytes;
}
public static PublicKey loadPublicKey1(String stored) throws Exception{
    byte[] data = Base64.decode(stored.getBytes());
    X509EncodedKeySpec spec = new X509EncodedKeySpec(data);
    KeyFactory fact = KeyFactory.getInstance(ALGO_RSA);
    return fact.generatePublic(spec);
}

服务器方法:

public byte[] decryptRSA(String inputData) throws Exception {
    byte[] inputBytes = Base64.decodeBase64(inputData);
    PrivateKey key = loadPrivateKey(getPrivateKey());
    Cipher cipher1 = Cipher.getInstance("RSA");
    cipher1.init(Cipher.DECRYPT_MODE, key);
    return cipher1.doFinal(inputBytes);
}
private PrivateKey loadPrivateKey(String key64) throws Exception {
    byte[] pkcs8EncodedBytes = Base64.decodeBase64(key64);
    PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(pkcs8EncodedBytes);
    KeyFactory kf = KeyFactory.getInstance("RSA");
    return kf.generatePrivate(keySpec);
}

让它工作了。所以不同的库有不同的密码实现。所以在打电话时

Cipher.getInstance("RSA/ECB/PKCS1Padding"(;

明确提及加密模式和填充。

希望它对某人有所帮助。

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