坏填充异常 - pkcs11中的RSA / ECB / OAEPWITHSHA-256ANDMGF1PADDING

Question

我的应用程序正在访问电子令牌以解密来自服务器的响应

来自服务器的会话密钥使用以下方式加密： -

RSA / ECB / OAEPWITHSHA-256ANDMGF1PADDING

我正在使用SunPKCS11 Provider来实现对加密令牌的访问。每当我尝试使用上述机制解密时，即使用RSA / ECB / OAEPWITHSHA-256ANDMGF1PADDING，我得到： -

**javax.crypto.BadPaddingException: doFinal() failed  
    at sun.security.pkcs11.P11RSACipher.implDoFinal(P11RSACipher.java:328)  
    at sun.security.pkcs11.P11RSACipher.engineDoFinal(P11RSACipher.java:353)  
    at javax.crypto.Cipher.doFinal(DashoA13*..)

以下是我的代码： -

private static final String TRANSFORMATION = "RSA/ECB/OAEPWITHSHA-256ANDMGF1PADDING";
private static final String SECURITY_PROVIDER = "BC";
private static final String DIGEST_ALGORITHM = "SHA-256";
private static final String MASKING_FUNCTION = "MGF1";

错误发生的代码段如下： -

private byte[] decryptSecretKeyData(byte[] encryptedSecretKey, byte[] iv, PrivateKey privateKey) throws Exception {

        try {
            Cipher rsaCipher = Cipher.getInstance(TRANSFORMATION, SECURITY_PROVIDER);

            System.out.println("Cipher block initialized"); - **Printed**
            PSource pSrc = (new PSource.PSpecified(iv));
            System.out.println("PSource inisitialized"); - **Printed**


            rsaCipher.init(Cipher.DECRYPT_MODE, privateKey,
                    new OAEPParameterSpec(DIGEST_ALGORITHM, MASKING_FUNCTION,
                            MGF1ParameterSpec.SHA256, pSrc));


            System.out.println("Here after cipher initilaization");  - **Not Printed***

            return rsaCipher.doFinal(encryptedSecretKey);
        } catch (GeneralSecurityException e) {
            System.out.println("GeneralSecurityException is "+e.getMessage());
            throw new Exception("Failed to decrypt AES secret key using RSA.", e);
        }
    }

我被困在这里，无法解密OAEP转型。