Is there any speculation on this encryption with the new Extension 4 file system about to enter Linux land? It seems like Extension 4 will be something people will really want to use. On Tue, Feb 10, 2009 at 9:16 AM, unggnu <unggnu@xxxxxxxxxxxxxx> wrote: > Hi, > > afaik using 256 bit key length with aes-xts-plain results in a 128 bit aes > encryption and a 128 bit XTS key. > 128-AES should be secure of course but what difference does the half XTS > key make? According to Wikipedia there is a terabyte limit which might be > lower with 128 and XTS uses two keys which might result in two 64 bit ones? > Does anyone know which impact it have or know a good source for this? I > haven't found any information which might be interesting for non crypto > experts. > 256 is faster but most likely because of the less rounds of AES-128. If > there is no real difference like between AES-256 and AES-128 the keylength > of 256 would make sense for slower cpus. > > Thanks in advance > unggnu > > --------------------------------------------------------------------- > dm-crypt mailing list - http://www.saout.de/misc/dm-crypt/ > To unsubscribe, e-mail: dm-crypt-unsubscribe@xxxxxxxx > For additional commands, e-mail: dm-crypt-help@xxxxxxxx > >
