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  ______    _____    _    _    _    _    _    _   
 /_____//  |  ___|| | |  | || | || | || | || | || 
 `____ `   | ||__   | |/\| || | || | || | || | || 
 /___//    | ||__   |  /\  || | \\_/ || | \\_/ || 
 `__ `     |_____|| |_// \_||  \____//   \____//  
 /_//      `-----`  `-`   `-`   `---`     `---`   
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Text this: Strong identity-based proxy signature schemes, revisited