I don't do, I want to try encryption, so I use my familiar PHP to write ...
principle:
Convert characters to the ASCII code, then convert the ASCII code, turn the result to the character, and complete it.
?
achieve:
Enter the characters you want to encrypted:
Error_Reporting (255); if (isset ($ VAL)) {? // Encryption ?? for ($ I = 0; $ I
? {
? $ c = $ value [$ I];
? $ c = ORD ($ C);
?? IF ($ C> 31 && $ C <107)
?? {
??? $ c = $ c 20;
??? Print ("The characters before encryption:". $ VAL);
???print ("
Encrypted characters: ". Chr ($ c));
???print ("
");
??}?
?? Elseif ($ C> 106 && $ C <127)
?? {
??? $ c = $ c-75;
??? Print ("The characters before encryption:". $ VAL);
???print ("
Encrypted characters: ". Chr ($ c));
???print ("
");??
??}
?
}
Else
{
? Print ("Please enter the character you want to encrypted");
}
?>
Pay attention to some problems during the conversion of ASC, such as ASC from 0-127, then when transforming, the ASC greater than 127 or less, this is controlled, it is best to grade its own list .
Since the encryption algorithm has come out, then the decryption is almost the same, huh, I will not write .....
