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I want to know what security level is provided by the type a and type d curves which are included in charm crypto library? For example, the type a curves SS512 and SS1024 have a prime field of 512 and 1024 bits respectively? Can anyone tell me what security is provided by them?

Aisha
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    probably more appropriate for http://crypto.stackexchange.com – lockcmpxchg8b Dec 04 '17 at 14:36
  • @lockcmpxchg8b If I ask on crytpo Stackexchange they will say it is related to coding and must be asked on stackover flow. – Aisha Dec 04 '17 at 14:45
  • Table A-1 in https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4730686/ gives some parameters and their associated security levels. I am unfortunately not familiar with this particular primitive. In the table, `q` seems to be the field order...so you'll have to find `k` and `r` for your curves of interest. – lockcmpxchg8b Dec 04 '17 at 14:58
  • @lockcmpxchg8b Thanks for sending this. I will read the article and hopefully find the answer to my question – Aisha Dec 04 '17 at 15:46

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