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Message boards : General discussion : Researcher uses 379-year-old algorithm to crack crypto keys found in the wild

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Message 154951 - Posted: 26 Mar 2022 | 16:21:04 UTC

Researcher uses 379-year-old algorithm to crack crypto keys found in the wild

Cryptographers have long known that RSA keys that are generated with primes that are too close together can be trivially broken with Fermat's factorization method.

____________

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Message 154953 - Posted: 26 Mar 2022 | 17:23:06 UTC


/JeppeSN

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Message 154955 - Posted: 26 Mar 2022 | 19:28:51 UTC - in response to Message 154951.

Researcher uses 379-year-old algorithm to crack crypto keys found in the wild
Cryptographers have long known that RSA keys that are generated with primes that are too close together can be trivially broken with Fermat's factorization method.

It is a known fact. See https://facthacks.cr.yp.to/fermat.html for example, written in 2012.

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Message 155239 - Posted: 27 Apr 2022 | 21:43:50 UTC

Next year, it will a 380-year-old algorithm, and still just as useful for breaking weak keys.

If testing key strength is not a standard part of generating new crypto keys, it should be.

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Message boards : General discussion : Researcher uses 379-year-old algorithm to crack crypto keys found in the wild

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