New answers tagged classical-cipher
2
So Vigenere is similar to caesar. So you start decrypting it like you do with caesar:
S - +2 --> U
O - +3 --> R
M - +5 --> R
E - +7 --> L
B - +11 -> M
O - +13 -> B
D - +17 -> U
Y - +19 -> R
So you may have noticed, that the text is decrypt via using the next bigger prime. Just subtract the primes from the decrypted text and you get ...
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