Hi, I'm interessted in the inner workings of encrypting block devices like the encrypted volumes created with the cryptsetup tool. Let's say a file of size 200K is stored on an encrypted ext2 filesystem. How is the enrcyption key applied to it? I guess the password is used only for accessing/mounting the volume, and the key is only a starting value (ie. a "seed") for the underlying cipher. Since in these cases usually a blockwise operating cipher is used, that means that the file will be encrypted of course blockwise, for example in blocks of 32 bytes. Now the question: are the blocks of that file all encrypted using the same one key? Or does a kind of "streaming" or HMAC get used for the subsequent blocks of the file? -- TIA Uenal _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
