467 reputation
29
bio website github.com/CodesInChaos
location Frankfurt, Germany
age
visits member for 3 years, 5 months
seen Jul 3 at 16:20

Jul
2
comment Does Windows 8 have to be installed on NTFS?
You can have multiple partitions on your flash drive.
Jun
7
comment Why doesn't XCOPY copy my junctions?
"junctions (aka. symlinks / reparse points)" Those are not the same thing.
Apr
29
comment My directory has become recursive. How can I remove it?
Obligatory XKCD
Apr
29
comment My directory has become recursive. How can I remove it?
I wonder which kind of link loop this is. Windows supports pretty many types, junction points, symlinks hardlinks and some others I forgot about. Using the dir command as @dsolimano suggests should enable you to distinguish symlinks from the rest of them
Apr
29
comment My directory has become recursive. How can I remove it?
@and31415 I don't think those will help either since the OP's path is infinite.
Mar
25
comment Is there a way to encrypt a drive with Truecrypt, and keep your data?
TrueCrypt only supports in place encryption for the system partition/disk (don't ask me why). If you're using only Linux, I wouldn't use TrueCrypt in the first place. It's main advantage is the windows support.
Mar
11
comment Why is there used space in empty TrueCrypt file containers?
Could you present some evidence that the overhead for a volume created by TrueCrypt is larger than for windows created volume of the same size? To me it simply looks like the absolute overhead growing much slower than the volume size.
Mar
11
comment Why is there used space in empty TrueCrypt file containers?
For a 10 GB the used space drops to 78 MB. How much used space does a 10 MB NTFS volume created by windows have? I never created such a small volume, so I don't know if your assertion that it is "ALOT compared to normal NTFS" is true.
Feb
12
comment Whats the link between security and processors
An AES-NI based implementation doesn't have timing leaks, most traditional AES implementations do have them. So you don't only gain performance by using AES-NI.
Feb
6
comment How are pseudorandom and truly random numbers different and why does it matter?
@KefSchecter Yes, crypto applications need true random numbers to seed the CSPRNG. But for everything else we can use that CSPRNG.
Feb
6
comment How are pseudorandom and truly random numbers different and why does it matter?
Study the source code of a PRNG. Then you're given as many samples of the output as you'd like of something that may be a true rng or the PRNG you studied. With MT and similar bad PRNGs you will easily be able to tell if it was the PRNG. With a good PRNG you won't be able to tell this, even after observing huge amounts of output.
Feb
6
comment How are pseudorandom and truly random numbers different and why does it matter?
My point is that a deviation which is impossible to detect by any known process is irrelevant. In any case it's much smaller than the chance of random hardware errors or bugs. The seed needs to be big enough to avoid repeating a seed, ever. A repeated seed could be detected with long outputs. But it doesn't need to be big enough to reach all possible output sequences. A PRNG seeded with 256 bits is indistinguishable from true random numbers unless you either 1) observe close to 2^128 different streams or 2) brute force 2^256 seeds. Neither of which is feasible.
Feb
6
comment How are pseudorandom and truly random numbers different and why does it matter?
Why do you care that some shuffles can't happen? That restriction has no observable effect.
Feb
5
comment How are pseudorandom and truly random numbers different and why does it matter?
@KefSchecter It their heard hardware PRNGs generally have biased and/or correlated output. They need a post processing step to turn it into uniform independent output. There is no reason to believe that this post processing step is more reliable than a modern stream cipher. I certainly would trust the stream cipher more. As an extra bonus it's reproducible, which is valuable in science.
Feb
5
comment Copying truecrypt containers?
@ThayananthanNarayanan That sounds completely different issue. To mount a file you need to use the "Select File" button, not the "Select Volume" button in the TrueCrypt UI.
Feb
5
comment Prevent TrueCrypt dismount when sleeping
As an alternative solution you could use a script that mounts the backup device. That will require storing the password in plain, but since you have full disk encryption, it's not much worse security wise than your original solution.
Feb
5
comment Prevent TrueCrypt dismount when sleeping
Perhaps putting the computer to sleep causes a temporary disconnect for a particular broken device. TrueCrypt dismounts volumes stored on missing drives. Not for security reasons, but simply because it has nowhere to read the data from/write it to.
Feb
5
comment How are pseudorandom and truly random numbers different and why does it matter?
I'd blame the WEP stuff on a badly designed protocol using a weak cipher. With modern stream ciphers you can use a counter as IV.
Sep
1
comment Does recompiling a program produce a bit-for-bit identical binary?
It shouldn't be hard to make the built reproducible (apart from a few easily discarded fields like compilation time and the assembly GUID). For example sorting input files into a canonical order is a one-liner. Even that GUID could be a hash of the remainder of the assembly instead of newly generated.
Jul
10
comment Will setting the processor affinity for Pyrit improve the rate at which it cracks a wireless key?
Consider getting an AMD/ATI graphics card. They're typically much faster than nVidia.