5 ms·

Apart from the obvious assault on the presumption of innocence here, is there a cryptographic file-system that stores a secret X and Y that given a key k_x woul

Apart from the obvious assault on the presumption of innocence here, is there a cryptographic file-system that stores a secret X and Y that given a key k_x would decrypt the content X and given k_y would decrypt the content Y without revealing to an attacker that there are multiple contents? If yes, than one could store a real secret X and store a false secret Y, something that looks like a secret enough to be perceived as a secret. Then in case of torture, government persecution, etc, the victim could reveal only Y.

Veratyr 10y ago
Yes, this was a feature of Truecrypt, though I'm not familiar with the underlying crypto.
- maxerickson 10y ago
  It just uses data layout. Normal volumes have some wasted space filled with random data. Volumes with hidden volumes inside them fill that space with a second header. If the outer volume is naively mounted, writes can destroy the data stored in the inner volume.
scld 10y ago
TrueCrypt has a feature like this. Not sure if its efficacy but the idea is that you have a password that decrypts to one thing and password that decrypts to another, I believe?
mrwizrd 10y ago
This is known as deniable encryption. https://en.wikipedia.org/wiki/Deniable_encryption https://en.wikipedia.org/wiki/Deniable_encryption
rtkwe 10y ago
> His sister saw some of it, and the suspect is said to have shown his family an illicit video, too. > Within the virtual machine the examiner found one image of what appeared to be a 14-year-old child wearing a bathing suit and posed in a sexually suggestive position. There were also log files that indicated that Doe had visited groups titled: “toddler_cp,” “lolicam,” “hussy,” “child models – girls,” “pedomom,” “tor- childporn,” and “pthc,” terms that are commonly used in child exploitation. > The exam also found that Freenet, the peer-to-peer file sharing program used by Doe to obtain child pornography from other users, had been installed within the virtual machine. The exam showed that Doe accessed or attempted to access more than 20,000 files with file names consistent with obvious child pornography... and that he used the external hard drives seized by Delaware County detectives to access and store the images. They have a pretty strong amount of evidence that what's in those drives will be CP.

Veratyr 10y ago

Yes, this was a feature of Truecrypt, though I'm not familiar with the underlying crypto.

maxerickson 10y ago
It just uses data layout. Normal volumes have some wasted space filled with random data. Volumes with hidden volumes inside them fill that space with a second header. If the outer volume is naively mounted, writes can destroy the data stored in the inner volume.

scld 10y ago

TrueCrypt has a feature like this. Not sure if its efficacy but the idea is that you have a password that decrypts to one thing and password that decrypts to another, I believe?

mrwizrd 10y ago

This is known as deniable encryption. https://en.wikipedia.org/wiki/Deniable_encryption https://en.wikipedia.org/wiki/Deniable_encryption

rtkwe 10y ago

> His sister saw some of it, and the suspect is said to have shown his family an illicit video, too. > Within the virtual machine the examiner found one image of what appeared to be a 14-year-old child wearing a bathing suit and posed in a sexually suggestive position. There were also log files that indicated that Doe had visited groups titled: “toddler_cp,” “lolicam,” “hussy,” “child models – girls,” “pedomom,” “tor- childporn,” and “pthc,” terms that are commonly used in child exploitation. > The exam also found that Freenet, the peer-to-peer file sharing program used by Doe to obtain child pornography from other users, had been installed within the virtual machine. The exam showed that Doe accessed or attempted to access more than 20,000 files with file names consistent with obvious child pornography... and that he used the external hard drives seized by Delaware County detectives to access and store the images. They have a pretty strong amount of evidence that what's in those drives will be CP.