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MNT curves security level in PBC #274
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According to [1], these four curves (SS512, MNT159, MNT201, MNT224) provide security levels of 80-bit, 80-bit, 100-bit, and 112-bit, respectively. But the expression of the security level of the same curve is inconsistent in different papers. [1] H. Cui, Z. Wan, R. H. Deng, G. Wang and Y. Li, "Efficient and Expressive Keyword Search Over Encrypted Data in Cloud," in IEEE Transactions on Dependable and Secure Computing, vol. 15, no. 3, pp. 409-422, 1 May-June 2018, doi: 10.1109/TDSC.2016.2599883. |
Hi everyone,
Could anyone please let me know what is the security level of MNT curves mentioned in this: https://github.com/JHUISI/charm/blob/bbb7e62c8f79549e8d843dafa09802caefcf2e89/charm/toolbox/pairingcurves.py
I found that MNT159 supports an 80-bit security level claimed in few papers. However, I can't find any reference to this information as well as other curves like MNT224, MNT201.
Thank you for your help.
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