發送短信 : Optical Encryption and Authentication Based on Phase Retrieval and Sparsity Constraints

           _    _    __   __   __   __    ______  
    ___   | || | ||  \ \\/ //  \ \\/ //  /_   _// 
   /   || | || | ||   \   //    \ ` //   `-| |,-  
  | [] || | \\_/ ||   / . \\     | ||      | ||   
   \__ ||  \____//   /_//\_\\    |_||      |_||   
    -|_||   `---`    `-`  --`    `-`'      `-`'   
     `-`