New Technique Bypasses 1,024-Bit RSA Without Factoring It
The RSA encryption algorithm may be even more endangered now, courtesy of University of California, San Diego and Inria Nancy researchers. Cyber Security News reported that a new signature forgery attack detailed in the researchers’ paper deployed a novel method to crack 1,024-bit RSA encryption without factoring (finding the two primes used to create a key). The researchers were able to break encryption with an academic CPU cluster that dedicated 1,380 CPU core-years to the problem over five months.
- ▪The RSA encryption algorithm may be even more endangered now, courtesy of University of California, San Diego and Inria Nancy researchers.
- ▪Cyber Security News reported that a new signature forgery attack detailed in the researchers’ paper deployed a novel method to crack 1,024-bit RSA encryption without factoring (finding the two primes used to create a key).
- ▪The researchers were able to break encryption with an academic CPU cluster that dedicated 1,380 CPU core-years to the problem over five months.
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| Original publisher | Gizmodo |
| Canonical URL | https://gizmodo.com/new-technique-bypasses-1024-bit-rsa-without-factoring-it-2000817054 |
| Publication time | Thu, 24 Sep 2026 22:21:15 +0000 |
| Retrieval time | 2026-09-24T22:25:27.034Z |
| Last seen | 2026-09-24T22:25:27.034Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | O-iKcArk9dg_ · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
The RSA encryption algorithm may be even more endangered now, courtesy of University of California, San Diego and Inria Nancy researchers. Cyber Security News reported that a new signature forgery attack detailed in the researchers’ paper deployed a novel method to crack 1,024-bit RSA encryption without factoring (finding the two primes used to create a key). The researchers were able to break encryption with an academic CPU cluster that dedicated 1,380 CPU core-years to the problem over five months. Factoring a 1,024-bit RSA key, Cyber Security News noted, has previously been estimated to require 500,000 to 1 million CPU core-years. RSA is not quantum-resistant, potentially meaning anything encrypted using it today could be broken by future attackers with access to a quantum computer.
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