> The current implementation adds a 512 byte header to the encrypted file to > store information about the plain data length to work around padding issues > if the data that is to be encrypted is not a multiple of 512. The header is > also encrypted with the load so the only way to read the header is to first > decrypt the encrypted file with the correct passphrase. > > Like somebody said in one of the previous discussions on plain volumes,the > only way to know a correct passphrase was used when decrypting a plain > volume is to check in the decrypted data for something that is known to be > there from the original data. > > The question i am asking is, is it possible to write some information in > the header in a way that will tell me the decrypting key is the same as the > encrypting key? I apologise in advance if I've misunderstood your question in any way. It occurs to me that using hashes could be a good idea? You could either use a hash of (at least part of) the file itself, or you could use a hash of the passphrase?
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