If the ciphertext is the columns written out in increasing key-digit order then it appears correct to me. Not sure what you mean the mistake should be.shivajikobardan said:
uuh it's confusing as there're multiple perspectives.Filip Larsen said:
The best way to determine if the key of a transposition cipher is correct is to try decrypting the message with the given key. If the resulting message is readable and makes sense, then the key is likely correct. Another way is to compare the decrypted message with the original message to see if they match.
Using the wrong key to decrypt a transposition cipher will result in a message that is either unreadable or makes little sense. This is because the key determines the order in which the letters are rearranged, and using the wrong key will result in a jumbled message.
Yes, it is possible to crack a transposition cipher without knowing the key, but it can be a difficult and time-consuming process. It often involves trying different key combinations and using frequency analysis to determine the correct key.
The length of the key for a transposition cipher depends on the length of the message. Generally, the key should be at least as long as the message to ensure security. However, using a longer key can make it more difficult for someone to crack the cipher.
One weakness of a transposition cipher is that it does not change the actual letters of the message, only their positions. This means that if someone knows or can guess the key, they can easily decrypt the message. Additionally, frequency analysis can still be used to crack a transposition cipher.