Pre-Grant Publication Number: 20070250920
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Prior Art Detail
Summary / Description
| Summary / Description | A software product for Linux that provides deniable encryption of a hard drive. The user enters one of a set of passphrases, and each provides access to a different encrypted aspect of the drive. One or more aspects may be primary and others may be feigned. |
Basic Information
| Type of Prior Art | Online Publication |
| URL | http://iq.org/~proff/rubberhose... |
| Author/Creator | Julian Assange, Ralf P. Weinmann and Suelette Dreyfus |
| Title | Rubberhose cryptographically deniable transparent disk encryption system |
| Publication Date | August 22, 2000 |
| Publisher | Julian Assange |
| Directions to Document Location | |
| Additional Information | |
Notes / To Do
| Notes | |
Excerpt
Excerpt Rubberhose is a type of deniable cryptography package. Deniable cryptography gives a person not wanting to disclose the plaintext data corresponding to their encrypted material the ability to show that there is more than one interpretation of the encrypted data. What deniable crypto means in the Rubberhose context is this: if someone grabs your Rubberhose-encrypted hard drive, he or she will know there is encrypted material on it, but not how much -- thus allowing you to hide the existence of some of your data.
...
Since Rubberhose strews the bits all over the drive, we decided to call a Rubberhose section an "aspect", rather than a partition or level. Each Rubberhose aspect has its own passphrase and must be decrypted separately. The entire Rubberhose drive is an "extent". The idea behind choosing the word aspect is simple: a Rubberhose "aspect" is simply a view of the same thing (the extent) from a different perspective -- like viewing the same object from different angles. The program lets you make as many aspects in one extent as you want. If anyone seizes your data, they will not be able to tell either through mathematical analysis or physical testing of the disk how many aspects are on the drive, or how much real data is on any one aspect. |
Relevance
Claims
1
A security system for controlling the access of a user to an asset, comprising a password-protected access interface and asset access means, the access interface comprising means for receiving user credentials comprising a password, wherein the access interface accepts user credentials in which the password is one of a recognized primary password and one or more recognized secondary passwords, the asset access means being operably associated with the access interface such that when the accepted user credentials comprise the primary password, the asset access means provides access to the asset, and when the accepted user credentials comprise one of the one or more secondary passwords, the asset access means provides relatively limited or feigned access to the asset, and when the user credentials do not comprise one of the primary password and the one or more secondary passwords, the asset access means denies access to the asset.
Relevance
Rubberhose provides an access interface that permits the user to mount one aspect of the drive with one password or another aspect of the drive with another password. This amounts to a mechanism that is in essence equivalent to this claim.
Rubberhose provides an access interface that permits the user to mount one aspect of the drive with one password or another aspect of the drive with another password. This amounts to a mechanism that is in essence equivalent to this claim.
Claim Chart
All
