A known-plaintext attack (KPA) occurs when a hacker uses pairs of both encrypted and unencrypted data to figure out the encryption algorithm or key. In this attack, the hacker has access to both the ...
The Double Playfair is an extension of the Playfair to use two separate keys and to encipher each pair of letters twice. The German police made the mistake in late 1941 of switching from the rather ...
A mysterious manuscript dating back to the 15th century could be a type of encrypted message, a new study has suggested. The ...
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