Question

当我尝试使用EC公钥加密字节数组时，我收到以下异常：

java.security.InvalidKeyException: No installed provider supports this key:
sun.security.ec.ECPublicKeyImpl

当我调用Cipher.init（）时会生成此异常。下面的行显示了我在程序中所做的事情：

ECPublicKey publicKey ;
ECPrivateKey privateKey;

//Generating key paire (public and private keys) 
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC", "SunEC");
    SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");

    keyGen.initialize(571, random);
    KeyPair pair = keyGen.generateKeyPair();
    privateKey = (ECPrivateKey) pair.getPrivate();
    publicKey = (ECPublicKey) pair.getPublic();

// get an AES cipher object with CTR encription mode 
   Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding");

// encrypt the sharedSecret using the public key
   cipher.init(Cipher.ENCRYPT_MODE, publicKey);**
   byte[] result = cipher.doFinal(data);

我必须添加一个提供程序来支持这个公钥吗？

Answer 1

最后，我找到了这个例外的来源。问题是密码的初始化：

//This is the wrong initialization
Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding");

//This is the right initialization
Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding","SunJCE");

但是现在，我还有另外一个例外（它不像前一个那么重要）：

java.security.InvalidKeyException: Invalid AES key length: 170 bytes

那么我现在必须使用哪种加密算法和ECDSA公钥？

使用ECPublicKey的InvalidKeyException

1 个答案: