James

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James last won the day on July 20 2016

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  1. Emmanuel Thomé and his colleagues at the National Institute for Research in Computer Science and Automation (Inria) have cracked the largest key so far. The team factored RSA-240, an RSA key with 240 decimal digits. The total computing time took was equivalent to a single computer core running for almost 4000 years. https://www.newscientist.com/article/2226458-number-crunchers-set-new-record-for-cracking-online-encryption-keys/ https://www.popularmechanics.com/science/math/a30149512/longest-encryption-ever-cracked/ https://www.darkreading.com/vulnerabilities---threats/scientists-break-largest-encryption-key-yet-with-brute-force/d/d-id/1336560
  2. Mastercard, Visa, eBay and Stripe have also withdrawn from the Libra Association. https://www.bbc.co.uk/news/technology-50023008
  3. The Libra Association co-founded by Facebook aims to serve as a monetary authority for the Libra cryptocurrency. It says Libra's purpose is to "empower billions of people," citing 1.7 billion adults without bank accounts who could use the currency. The Libra Association is a group of 28 companies and non-profits helping to develop Libra. The Libra blockchain is implemented using Rust. The coding guidelines for the Libra Core Rust codebase are at https://developers.libra.org/docs/community/coding-guidelines On Friday 4th October, PayPal announced its withdrawal from the project. It said it remained supportive of Libra's aspirations but had chosen to focus on its own core businesses. https://www.bbc.co.uk/news/world-australia-49944421
  4. NIST has a section for Threshold Encryption and says it has areas of relevant related research including secure multi-party computation, intrusion tolerant distributed systems, and threshold circuit design... https://csrc.nist.gov/Projects/Threshold-Cryptography
  5. VeraCrypt is now available from https://www.veracrypt.fr/en/Home.html VeraCrypt 1.22 was released in March 2018. It included Kuznyechik speedup, new cascades cipher algorithms, and TRIM support for SSD. VeraCrypt 1.23 was released in September 2018. It added a default SecureBoot for the Windows EFI system.
  6. Tesla has confirmed that it will carry out an over-the-air software update to fix a security flaw in key fobs for the Tesla S. The key fob, manufactured by Pektron, was previously based on 40-bit encryption, and upgraded to 80-bit encryption after it was found that fobs could be easily cloned. Unfortunately the latest fobs have a bug which allows two 40-bit keys to be cracked instead of the expected 80-bit key. Further information about the hack is at https://carbuzz.com/news/turns-out-the-tesla-model-s-is-still-easy-to-hack
  7. There is an interesting discussion of the cryptographic strength of Data's password at https://orbitalflower.github.io/tv/startrek/datas-password.html The password has 52 characters - 173467321476c32789777643t732v73117888732476789764376 You will need to memorise this password if you want to sing along to Data & Picard by Pogo
  8. I have always been interested in Steganography but this process would rely upon the security of the message board, and their network connections. An interesting concept nonetheless.
  9. A couple of thoughts... if you have repeated characters and you can choose different positions then when you re-run the encryption you could reveal which characters are the same. If the plain text is English then we could expect the most duplicated characters to be the letter E, and the least duplicated to be letters such as Q and Z, and then just test out different character mapping arrangements. However I don't fully understand the decryption process... if you give me the key of XYZ and positions 2,1,4,3,5 how do I know which letter a position relates to unless it is in the key. How do I come up with A, B or C? Or does the key have to contain all the unique letters of the plain text? Also, with the key embedded, I am just wondering about forward secrecy implications.
  10. Why not submit it for a competition or for peer review first? https://competitions.cr.yp.to/
  11. You are very welcome to post here. Forum guidelines are here but basically are just about being polite to one another. For video/files etc I recommend hosting off-site with YouTube/DropBox etc and linking to them so that your copy stays safe. Looking forward to hearing more about your concept.
  12. One area it might be useful is for a blind auction. I think this method would rely upon a per-document key rather than a per-user key, similar to https://github.com/owncloud The process is outlined in more detail here... https://security.stackexchange.com/a/78933 However this only covers multi-user encryption, rather than your lockdown until all users have completed. Perhaps that aspect is better covered by file access after the encrypting stages?
  13. The message was... !!! Happy Birthday LCS !!! (seed value b for p = 712238904468723561162000937465778229877598711342253664788091132335) Source: https://www.mersenneforum.org/showthread.php?p=516879#post516879
  14. Apple has released a video to promote End-to-End Encryption
  15. Self-taught Belgian bloke cracks crypto conundrum that was supposed to be uncrackable until 2034 By Katyanna Quach 30 Apr 2019 at 06:04 https://www.theregister.co.uk/2019/04/30/cryptography_conundrum_cracked/ 'It was easy, for some definition of easy,' solver tells El Reg A cryptographic puzzle proposed two decades ago that involves roughly 80 trillion squarings has been cracked much earlier than expected - in just three and a half years. On Monday, the puzzle was solved by Bernard Fabrot, a self-taught independent Java developer from Belgium. The time capsule will, thus, be cracked open by Rivest for the world to see on May 15, and the secret message revealed.