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【转载】解决Linux操作系统下AES解密失败的问题

现象描述:

windows上加解密正常,linux上加密正常,解密时发生如下异常:

javax.crypto.BadPaddingException: Given final block not properly padded

       at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
       at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
       at com.sun.crypto.provider.AESCipher.engineDoFinal(DashoA13*..)
       at javax.crypto.Cipher.doFinal(DashoA13*..)
       at chb.test.crypto.AESUtils.crypt(AESUtils.java:386)
       at chb.test.crypto.AESUtils.AesDecrypt(AESUtils.java:254)
       at chb.test.crypto.AESUtils.main(AESUtils.java:40)

解决方法:

经过检查之后,定位在生成KEY的方法上,如下:

public static SecretKey getKey (String strKey) {  
	try {           
		KeyGenerator _generator = KeyGenerator.getInstance( "AES" );  
		_generator.init(128, new SecureRandom(strKey.getBytes()));  
			return _generator.generateKey();  
	}  catch (Exception e) {  
		 throw new RuntimeException( " 初始化密钥出现异常 " );  
	}  
}