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RSA: updating the supported RSA modulo sizes in sigGen and sigVer modes. #1539

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almau opened this issue Sep 18, 2024 · 0 comments

almau commented Sep 18, 2024

Protocol Section
https://pages.nist.gov/ACVP/draft-celi-acvp-rsa.html#name-keygen-registration-table-2
https://pages.nist.gov/ACVP/draft-celi-acvp-rsa.html#name-rsa-siggen-fips186-5-capabi
https://pages.nist.gov/ACVP/draft-celi-acvp-rsa.html#name-rsa-sigver-fips186-5-capabi

Protocol Question
FIPS186-4 supports RSA modulos ranging from 2048 to 4096 for all certified modes (keyGen, sigGen, and sigVer):

keyGen: 2048, 3072 or 4096
sigGen: 2048, 3072, 4096
sigVer: 1024, 2048, 3072, 4096

The RSA modulo greater than 4096 is only implemented in keyGen for FIPS186-5:

keyGen: 2048, 3072, 4096, 6144, or 8192
sigGen: 2048, 3072, 4096
sigVer: 2048, 3072, 4096

Are you going to increase the supported modulo sizes for sigGen and sigVer modes to 6144 and 8192 bits?

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