Using a certain rule, I can express "THIS PHRASE IS VALID" as "KZZK GZISKV ZK PSDZV". What is this rule, and how did I come to it?
Hint/Note: Non-native English speakers may have a more difficult time solving this.
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This is a
With the key
Which decides the cipher text to the required ‘THIS PHRASE IS VALID’
The actual intended solution was:
Each letter had been rotated through the alphabet using ROT X where X is the number of keys on the particular row a letter is on. X can be rot 10, 9 or 7.
This has the same affect as using the key above, as vigenere uses the letter to rotate a certain amount of characters.