比较两个字节数组是否相等

 /// <summary>
    /// 比较两个字节数组是否相等
    /// </summary>
    /// <param name="b1">byte数组1</param>
    /// <param name="b2">byte数组2</param>
    /// <returns>是否相等</returns>
    private bool byteEquals(byte[] b1, byte[] b2)
    {
        if (b1.Length != b2.Length) return false;
        if (b1 == null || b2 == null) return false;
        for (int i = 0; i < b1.Length; i++)
            if (b1[i] != b2[i])
                return false;
        return true;
    }