發送短信 : Incomplete character sums and polynomial interpolation of the discrete logarithm

 __   _     _____     _  _      ___      ______  
| || | ||  |  ___||  | \| ||   / _ \\   /_   _// 
| '--' ||  | ||__    |  ' ||  | / \ ||  `-| |,-  
| .--. ||  | ||__    | .  ||  | \_/ ||    | ||   
|_|| |_||  |_____||  |_|\_||   \___//     |_||   
`-`  `-`   `-----`   `-` -`    `---`      `-`'