Informations about SSL certificates and networks security
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We’ve long known that 64 bits is too small for a block cipher these days. That’s why new block ciphers like AES have 128-bit, or larger, block sizes. The insecurity of the smaller block is nicely illustrated by a new attack called “Sweet32.” It exploits the ability to find block collisions in Internet protocols to … Read More “Collision Attacks Against 64-Bit Block Ciphers” »
In a cautionary tale to those who favor government-mandated backdoors to security systems, Microsoft accidentally leaked the key protecting its UEFI Secure boot feature. As we all know, the problems with backdoors are less the cryptography and more the systems surrounding the cryptography. Powered by WPeMatico
New paper: “Surreptitiously Weakening Cryptographic Systems,” by Bruce Schneier, Matthew Fredrikson, Tadayoshi Kohno, and Thomas Ristenpart. Abstract: Revelations over the past couple of years highlight the importance of understanding malicious and surreptitious weakening of cryptographic systems. We provide an overview of this domain, using a number of historical examples to drive development of a weaknesses … Read More “"Surreptitiously Weakening Cryptographic Systems"” »
I’m not sure what to make of this, or even what it means. The IRS has a standard called IDES: International Data Exchange Service: “The International Data Exchange Service (IDES) is an electronic delivery point where Financial Institutions (FI) and Host Country Tax Authorities (HCTA) can transmit and exchange FATCA data with the United States.” … Read More “IRS Encourages Poor Cryptography” »
Interesting National Science Foundation award: In the proposed “CryptoClub” afterschool program, middle-grade students will explore cryptography while applying mathematics to make and break secret codes. The playfulness and mystery of the subject will be engaging to students, and the afterschool environment will allow them to learn at their own pace. Some activities will involve moving … Read More “Cryptography for Kids” »
In Colombia: The team began experimenting with Morse code using various percussion instruments and a keyboard. They learned that operators skilled in Morse code can often read the signals at a rate of 40 words per minute but played that fast, the beat would sound like a European Dance track. “We discovered the magic … Read More “Hiding a Morse Code Message in a Pop Song” »
I missed this paper when it was first published in 2012: “Neuroscience Meets Cryptography: Designing Crypto Primitives Secure Against Rubber Hose Attacks” Abstract: Cryptographic systems often rely on the secrecy of cryptographic keys given to users. Many schemes, however, cannot resist coercion attacks where the user is forcibly asked by an attacker to reveal the … Read More “Subconscious Keys” »
Here’s an IDEA-variant with a 128-bit block length. While I think it’s a great idea to bring IDEA up to a modern block length, the paper has none of the cryptanalysis behind it that IDEA had. If nothing else, I would have expected more than eight rounds. If anyone wants to practice differential and linear … Read More “The IDEA Encryption Algorithm with a 128-bit Block Length” »
In the wake of the Paris terrorist shootings, David Cameron has said that he wants to ban encryption in the UK. Here’s the quote: “If I am prime minister I will make sure that it is a comprehensive piece of legislation that does not allow terrorists safe space to communicate with each other.” This is … Read More “David Cameron's Plan to Ban Encryption in the UK” »
This talk (and paper) describe a lattice-based public-key algorithm called Soliloquy developed by GCHQ, and a quantum-computer attack on it. News article. Powered by WPeMatico