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             ___      _____    __   __  __    __  
  ____      / _ \\   |__  //   \ \\/ // \ \\ / // 
 |    \\   | / \ ||    / //     \ ` //   \ \/ //  
 | [] ||   | \_/ ||   / //__     | ||     \  //   
 |  __//    \___//   /_____||    |_||      \//    
 |_|`-`     `---`    `-----`     `-`'       `     
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發送短信 : Provably secure symmetric private information retrieval with quantum cryptography