HenryNoble
Beta member
- Messages
- 2
- Location
- England
Hi there, I have a question about how to reverse MOD. Its for a computing course where I have to write my own encryption, but to prove it works I need to write the decryption.
I've used MOD on a number and used 26 as the divisor because each number eventually needs to represent a letter (I've made a table and used the VLOOKUP function to return the original letter into another).
Any help would be greatly appreciated,
Henry
I've used MOD on a number and used 26 as the divisor because each number eventually needs to represent a letter (I've made a table and used the VLOOKUP function to return the original letter into another).
Any help would be greatly appreciated,
Henry