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Comment on Factoring RSA Keys with Many Zeros by Weather

Bruce Schneier· ·1 min read · 0 reactions · 0 comments · 3 views
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Factoring RSA Keys with Many Zeros Interesting research on a new class of weak RSA keys: keys with lots of zeros. It turns out that these keys are out in the wild. The badkeys project is an open-source service that checks public keys for known vulnerabilities.

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Schneier on Security » Comments Feed · Bruce Schneier
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Factoring RSA Keys with Many Zeros Interesting research on a new class of weak RSA keys: keys with lots of zeros. It turns out that these keys are out in the wild. The badkeys project is an open-source service that checks public keys for known vulnerabilities. While developing this tool, Hanno collected a massive number of real-world keys from public sources, including Certificate Transparency logs, internet-wide TLS and SSH scans, PGP keys, and many others. By searching this dataset for unexpectedly sparse RSA moduli, we uncovered a large number of keys in the wild with the patterns in Figure 1. Both patterns include several regularly spaced blocks of all zeros interleaved with seemingly random data.

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