Number Encrypt-Decrypt With Password

[GoravG]

1. Enter Number limit 15 (Use only number)
2. Enter Password limit 10 (Use only number)
3. Enter Number 01 = 1, Enter Password 01 = 1

Example:-

   Enter Number(01) > Enter Password(01) > Encrypt Number(-50) > Decrypt Number(1)

 EDNumber.7z

[jchd]

Ah, got it: it's a joke, correct?

Func Encrypt($Number, $key)
    Return $Number - 4 * $key - 47
EndFunc

Func Decrypt($Number, $key)
    Return $Number + 4 * $key + 47
EndFunc

Can you please stop that?

[GoravG]

Ah, got it: it's a joke, correct?

Func Encrypt($Number, $key)
    Return $Number - 4 * $key - 47
EndFunc

Func Decrypt($Number, $key)
    Return $Number + 4 * $key + 47
EndFunc

Can you please stop that?

​It's a not joke, i'm new, i'm create simple example

[jchd]

I get that but do you really think that your example is non-trivial enough and hence does deserve a thread in this forum?

[czardas]

@GoravG
We see a lot of encryptions similar to yours which turn out not to be secure. Writing a secure encryption is not easy, I know this because I tried it myself. I think you misunderstood jchd, who has only good intentions: I am absolutely certain of this. Your encryption has been cracked, so you need to go back to the drawing board - maybe you should read up on the subject.