相关疑难解决方法(0)

我使用以下代码将密钥转换为字节

SecretKey key = KeyGenerator.getInstance("DES").generateKey();
byte[] bkey=key.getEncoded();

现在如何从中获取密钥bkey？我试过了:

SecretKeySpec secretkey = new SecretKeySpec(bkey,"DES");   
SecretKeyFactory sfkey = SecretKeyFactory.getInstance("DES");
SecretKey skey = sfkey.generateSecret(secretkey);

我收到以下错误:

Error during Exception java.security.spec.InvalidKeySpecException: Inappropriate key specification

由于使用RSAPublicKeyImpl，我收到一些警告：

警告：RSAPublicKeyImpl是内部专有API，可能会在以后的发行版中删除。import sun.security.rsa.RSAPublicKeyImpl;

我试图找到替代产品，但是没有运气。此类的开源替代品是什么？

来源: 如何从byte []数组中恢复RSA公钥？

这是我的KeyPair生成方法:

    try {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDSA", "BC");
        SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
        ECGenParameterSpec ecSpec = new ECGenParameterSpec("prime192v1");
        // Initialize the key generator and generate a KeyPair
        keyGen.initialize(ecSpec, random); // 256 bytes provides an
                                            // acceptable security level
        KeyPair keyPair = keyGen.generateKeyPair();
        // Set the public and private keys from the keyPair
        privateKey = keyPair.getPrivate();
        publicKey = keyPair.getPublic();


        System.out.println("Private and public keys:");
        System.out.println("PRIVATE: " + StringUtil.getStringFromKey(this.privateKey));
        System.out.println("PUBLIC: " + StringUtil.getStringFromKey(this.publicKey));

    } catch (Exception e) {
        throw new RuntimeException(e); …