String Handling in Delphi (part 11) Encryption Example 2

[@sunithayusuf3899]

Exactly what I was looking for for the it exams... Thanks

[@anesushumba4260]

Can you use an array instead of an string variable in this case

[@mckylenaidoo9721]

Can you please do a video encrypting a text using the ceasar cipher

[@MuhammadYusuf-eq8xi]

sir do you know where i can get the codes for the data files?

[@taytayy2005]

hi I'm having a problem for some reason my program changed yet I saved it right and I tried doing save as but it showing 'Encrypt_up'

[@Moon_shadow786]

Mr Long how do we decrypt the message

[@MrLongITandCAT]

Just do the exact some thing in reverse. Instead of referring to sAlphabet, refer to sEncrypt and vice versa.

[@Moon_shadow786]

@@MrLongITandCAT thanks

[@mckylenaidoo9721]

@@MrLongITandCAT i still dont understand...could you maybe do it please.

[@HammadAli-uh3sd]

@mr long decrypt doesn’t work 😿

[@lilylemach103]

how can i use an array in encryption and decryption

[@MrLongITandCAT]

general example is you could use an array to generate a random key: alpha := 'abcedfghijklmnopqrstuvwxyz' ; for i := 1 to 26 do //for each letter in alphabet begin iNum := randomrange( 1, length(alpha) + 1 ) ; //generate a random number that will corrsepond to that position in alpha string arrKey[ i ] := alpha[ iNum ] ; //allocate each position in array to a random value in alpha string Delete( alpha, iNum, 1) ; //remove letter you just randomly selected so you dont use it again in the key end ;

[@lilylemach103]

@@MrLongITandCAT thank youu we have a a practical and our IT teacher knows nothing I wish you could teach our school we only have 5 people in our class

[@MrLongITandCAT]

@@lilylemach103 You can do it! Use whatever videos we have to help you and your class.

[@karib_]

@@MrLongITandCAT morning sir, then how would you decrypt it?, (if we used the array)

[@orylangovender6990]

how would you make it use a edit box and encrypt the message in the edit box

[@MrLongITandCAT]

Put the value from the edit box into a variable and then use the variable like in the video: sTemp := edtSentence.Text ;

[@johannswart9859]

Mr Long in the if statement could you not just say continue and leave the else statement