Java：從編碼密鑰獲取密鑰

Question

如何從編碼字節[]返回到java.security.Key？

import java.security.Key; 
import javax.crypto.SecretKey; 
import javax.crypto.KeyGenerator; 

public class TestRSA { 

    public static void main(String[] args) throws Exception { 

    KeyGenerator kgen = KeyGenerator.getInstance("AES"); 
    kgen.init(128); 
    SecretKey key = kgen.generateKey(); 
    byte[] encoded = key.getEncoded(); 

    // now, how to get back the Key object from the encoded byte[]? 

    } 
} 

Answer 1

找到了！ http://www.exampledepot.com/egs/javax.crypto/GetKeyBytes.html

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