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  ____       ___      ______    _____     ____    
 |  _ \\    / _ \\   /_   _//  |  ___||  |  _ \\  
 | |_| ||  / //\ \\    | ||    | ||__    | |_| || 
 | .  //  |  ___  ||  _| ||    | ||__    | .  //  
 |_|\_\\  |_||  |_|| /__//     |_____||  |_|\_\\  
 `-` --`  `-`   `-`  `--`      `-----`   `-` --`

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發送短信 : Provably secure symmetric private information retrieval with quantum cryptography