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  ____     __   __   _    _    __   __   _____    
 |  _ \\   \ \\/ // | |  | ||  \ \\/ // |  __ \\  
 | |_| ||   \ ` //  | |/\| ||   \ ` //  | |  \ || 
 | .  //     | ||   |  /\  ||    | ||   | |__/ || 
 |_|\_\\     |_||   |_// \_||    |_||   |_____//  
 `-` --`     `-`'   `-`   `-`    `-`'    -----`

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Text this: ID-based Multi-signer Universal Designated Multi-verifier Signature Based on Discrete Logarithm