Hey Ilya, if you want to encrypt a file, I think the goal should be that the complete file is random looking. TrueCrypt does a pretty good job at that. I propose that you place the file size encrypted at the beginning of the file. I do even further propose that you might want to take a look at TrueCrypt's container header. <https://code.google.com/p/cryptsetup/wiki/TrueCryptOnDiskFormat> You may wanto to exchange some things (CRC -> SHA-3?) but all in all it's pretty good header.
BR JPM Am Freitag, 20. Februar 2015 07:50:16 UTC+1 schrieb Ilya Bizyaev: > > I encrypt a file with AES, but I need to store original file size for > decryping. Should I decrypt the file size or not? > -- -- You received this message because you are subscribed to the "Crypto++ Users" Google Group. To unsubscribe, send an email to [email protected]. More information about Crypto++ and this group is available at http://www.cryptopp.com. --- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
