Cryptography News (12 Posts)

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An update on my XOR-Sum Uniqueness Cryptanalysis attack

#10 - Posted on 25 August 2010 - Author: SM - Category: Cryptography

I have updated the information I wrote about what I consider to be a potentially new type of cryptanalysis attack.

Although the described attack is relevant to my BUGS algorithm, it could also be used to attack any algorithms using some type of Cipher Block Chaining (CBC) or Cipher Feedback (CFB) mode of operation, in fact, any algorithms using a XOR function between plaintext blocks as part of their encryption process.

The explanation assume the reader is familiar with the different block cipher modes of operation. Although I start with a simple example, it helps setting the context for which the final attack could be in theory applied to: any XOR operations.

For more information on my theoretical Unrestricted XOR-Sum Uniqueness Cryptanalysis attack, please ...
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New Version of Truecrypt

#3 - Posted on 21 July 2010 - Author: SM - Category: Cryptography

Truecrypt is a tool I have been using for a while, it is a great product and… free!

It allows for full disk encryption, being your desktop hardisk or a USB stick.

A new version has just been released, version 7, and it now provides:
– Hardware acceleration
– Auto-mount (windows)
– Security improvements related to windows hibernation files

Its main features are:
– Creates a virtual encrypted disk within a file and mounts it as a real disk.
– Encrypts an entire partition or storage device such as USB flash drive or hard drive.
– Encrypts a partition or drive where Windows is installed (pre-boot authentication).
– Encryption is automatic, real-time (on-the-fly) and transparent.
– Parallelization and pipelining allow data to be read and written as fast as if the drive was not encrypted.
– Encryption can be hardware-accelerated on modern processors.
– Pro...
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