HEX 문자열 BYTE 변환

public static byte[] StringToByteArray(string hex) {
    return Enumerable.Range(0, hex.Length)
                     .Where(x => x % 2 == 0)
                     .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
                     .ToArray();
}

http://stackoverflow.com/questions/8048498/convert-c-function-to-c-sharp

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