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If the plaintext format is indeed as you describe, then you're out of luck: the insertion of the newlines and the consequent shifting of the plaintext records is enough to disrupt any structure in the ciphertext. If the plaintext were longer, say, 8 records, then it could work, but with just 7 records there's no way to switch the first and last record ...


This procedure, also called signing a message, does not encrypt the message itself, thus does not ensure it cannot be read by others. Instead, a hash sum of the message is encrypted using the private key. For verifying, the recipient again calculates the hash sum of the message, and decrypts the hash sum calculated by the sender using the sender's public ...

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