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9 users online in the past 15 minutes (0 Members · 9 Guests · 0 Anonymous)

Crypto Studies

Posted by JOE.TEKK1 (Members) at Mar 17 2018, 03:10 PM. 0 comments

Introduction : Post-Quantum Cryptology -- Europe
http://www.pqcrypto.eu/index.html

Online banking, e-commerce, telemedicine, mobile communication, and cloud computing depend fundamentally on the security of the underlying cryptographic algorithms. Public-key algorithms are particularly crucial since they provide digital signatures and establish secure communication without requiring in-person meetings.

Essentially all applications today are based on RSA or on the discrete-logarithm problem in finite fields or on elliptic curves. Cryptographers optimize parameter choices and implementation details for these systems and build protocols on top of these systems; cryptanalysts fine-tune attacks and establish exact security levels for these systems. Alternative systems are far less visible in research and unheard of in practice.

It might seem that having three systems offers enough variation, but these systems are all broken as soon as large quantum computers are built. The EU and governments around the world are investing heavily in building quantum computers; society needs to be prepared for the consequences, including cryptanalytic attacks accelerated by these computers. Long-term confidential documents such as patient health-care records and state secrets have to guarantee security for many years, but information encrypted today using RSA or elliptic curves and stored until quantum computers are available will then be as easy to decipher as Enigma-encrypted messages are today.

PQCRYPTO will allow users to switch to post-quantum cryptography: cryptographic systems that are not merely secure for today but that will also remain secure long-term against attacks by quantum computers. PQCRYPTO will design a portfolio of high-security post-quantum public-key systems, and will improve the speed of these systems, adapting to the different performance challenges of mobile devices, the cloud, and the Internet of Things. PQCRYPTO will provide efficient implementations of high-security post-quantum cryptography for a broad spectrum of real-world applications.



DDoS Attack via IOT

Posted by mok-kong shen (Members) at Oct 25 2016, 09:08 PM. 0 comments

http://hub.dyn.com/static/hub.dyn.com/dyn-blog/dyn-statement-on-10-21-2016-ddos-attack.html

[Addendum:] http://fortune.com/2016/11/03/light-bulb-hacking/
A lecture of A. Shamir: "IOT: The Insecurity of Things" https://www.youtube.com/watch?v=A7BCdnscmeY&feature=youtu.be

www.rh.gatech.edu/news/587359/simulated-ransomware-attack-shows-vulnerability-industrial-controls

1,900 year-old classical cipher

Posted by W. K. Choy (Members) at Oct 4 2016, 11:02 AM. 0 comments

Greetings,

A 1,900 year-old classical cipher has been discovered encrypted in an ancient Chinese etymological dictionary called the Shuowen Jiezi. This was announced on an extremely quiet sinology discussion forum. See http://ctext.org/discuss.pl?if=en&thread=2610624

This 1.900 year-old cipher message is the tip of a very large iceberg. There is a highly complex cipher language that exists. This cipher language is classical Chinese. Please read the following thread to the end. There is some Chinese used in the thread, but you can get the drift of what is being said even if you do not understand Chinese. Note that state sponsored spin agents puncutate the discussion with their comments in an attempt to colour the discussion. The discussion was eventually locked. You are at liberty to draw you own conclusions as to the reason for this. Please see http://www.chinese-forums.com/index.php?/topic/52454-the-duality-code/

Classical Chinese is the greatest and most extensive classical cipher in existence. It encompasses an entire language. Chinese characters are symbols that can be read in any language just as the arabic numerals 1, 2, 3, 4, 5, etc can be read in any language. There is, of course, some initial learning involed. I hope members of this community will have fun getting to grips with this cipher language.

Why always use a reliable CSPRNG for encryption

Posted by Karl-Uwe Frank (Members) at Aug 27 2016, 03:23 PM. 0 comments

https://lists.gnupg.org/pipermail/gnupg-announce/2016q3/000395.html

This is a good example of the importance using a reliable CSPRNG for encryption.
Perhaps it might be useful if the encryption software include the FIPS-140-1 test routine
in order to ensure that the byte used are cryptographically strong.

Best of all perhaps would be running the FIPS-140-1 byte check subsequently on the
stream of random bytes drawn from the CSPRNG and if the test failed re-seeding the
CSPRNG.

Steganography: Hiding Morse Code in Club Music

Posted by Karl-Uwe Frank (Members) at Aug 25 2016, 12:01 PM. One comment

In this paper a new method for information hiding in club music is introduced. The method called StegIbiza is based on using the music tempo as a carrier. The tempo is modulated by hidden messages with a 3-value coding scheme, which is an adoption of Morse code for StegIbiza. The evaluation of the system was performed for several music samples (with and without StegIbiza enabled) on a selected group of testers who had a music background. Finally, for the worst case scenario, none of them could identify any differences in the audio with a 1% margin of changed tempo.

http://arxiv.org/abs/1608.02988
 

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