iain.davidson100 has added a photo to the pool:

iain.davidson100 has added a photo to the pool:

iain.davidson100 has added a photo to the pool:

One if my favourite flowers/shrubs

"Signature forgery." It's a new way to break RSA keys — and it doesn't require factoring. Ars Technica reports on new research using classical computing to "reduce the current RSA security level to an unacceptably low threshold" and lower the required computing resources by orders of magnitude.


There's "a gap in current RSA-type security assumptions," according to a paper co-authored by University of California, San Diego professor Nadia Heninger, who argues that gap "gives classical cryptanalytic evidence in favor of moving away from RSA entirely during the current post-quantum transition."

The practical risk is limited, but still significant. Applying the attack against the deprecated use of 1024-bit keys took a handful of months on an academic CPU cluster, significantly less than the current estimates for 1024-bit factoring that would require resources that only nations or companies with massive resources could achieve. Widely used RSA implementations are also safe. Nonetheless, the research has taken cryptographers by surprise... "If this result holds up under peer review, it would indeed be a conceptual break-through," Karsten Nohl, a cryptography expert and the head of innovation at Allurity, said in an interview. "RSA is as difficult to break as it is to factor large integers, at least so we thought. The researcher suggests that you can practically break RSA without cracking its key...."


The key forgery attack Heninger and the other researchers devised poses an immediate threat to 1024-bit RSA. Even for 2048- and 4096-bit keys, the method reduces the security of RSA to unacceptable levels. The National Security Agency, National Institute of Standards and Technology, and European Union Agency for Network and Information Security require that any cryptosystem should provide a level of no less than 128 or more bits, meaning the operations required must exceed 2**128. The forgery attack drops these levels to 2**65, 2**90, and 2**119 for 1024-, 2048-, and 4096-bit keys respectively. These levels may further drop because Heninger's team did all the coding by hand and used no AI or GPUs in performing the forgeries. The researcher said these tools will "almost certainly" drop the security levels further.


The attack works only against blind-signature implementations of RSA... Still, some real-world systems continue to use blind-signature, also known as textbook, RSA... The paper's authors and other researchers stress that the new attack poses little real-world threat. It does, however, drastically lower the estimated security of textbook RSA, and it does so in a way no one knew of previously... The new attack will further increase the urgency of completely moving away from the cryptosystem.

Thanks to long-time Slashdot reader phatrabt for sharing the article.

Read more of this story at Slashdot.

SOMEREN (ANP) - De politie heeft waarschuwingsschoten gelost bij een aanhouding in Someren. De politie kreeg in de nacht van vrijdag op zaterdag een melding van een bedreiging met een vuurwapen aan de Ter Hofstadlaan in de Noord-Brabantse plaats, waarna een agent met een dienstwapen meerdere schoten loste.

Er vielen geen gewonden. De politie onderzoekt de zaak.

HENGELO (ANP) - Inwoners van Hengelo kunnen nog dagen last houden van stankoverlast, meldt de veiligheidsregio Twente Veilig. Er kwamen vrijdagavond vanuit de buurten Tuindorp-Zuid en Nijverheid meerdere meldingen binnen van een hinderlijke lucht. De stank blijkt afkomstig van een bedrijf aan de Onyxstraat op het bedrijventerrein Twentekanaal. De lucht levert geen gevaar op voor de gezondheid, maar kan volgens de brandweer wel "als hinderlijk worden ervaren".

De geur is afkomstig van de eigen waterzuiveringsinstallatie van het bedrijf, waar "een biologisch proces plaatsvindt waarbij op dit moment meer geur vrijkomt dan gebruikelijk". De geur is op verschillende plaatsen en in wisselende mate waar te nemen. "Door veranderingen in de windrichting kan de geur ook in andere delen van Hengelo te ruiken zijn", stelt de brandweer.

Thomas Hawk posted a photo:

Thomas Hawk posted a photo:

Thomas Hawk posted a photo:

Thomas Hawk posted a photo:

Thomas Hawk posted a photo:

Terwijl ik thee zet, bespreken mijn man en ik welke leuke uitjes we kunnen doen de komende tijd. Een van de dingen waar we altijd erg van genieten, is een reisje gekoppeld aan…