some problem about your OPPRF about volepsi HOT 7 CLOSED

Yes, it's secure

from volepsi.

you will need to set https://github.com/Visa-Research/volepsi/blob/main/volePSI/RsOprf.h#L25 to be true on the OPRF that is used by the OPPRF https://github.com/Visa-Research/volepsi/blob/main/volePSI/RsOpprf.h#L93

Otherwise is should be malicious secure.

from volepsi.

OK, thank you!

from volepsi.

Hi,

I use the RsOPPRF.h, it seems that if the OPPRF sender's setsize is not equal to the OPPRF receiver's setsize, the program will jam and has no output. Can RsOPPRF support the setsize of Sender and receiver is not equal. For example: one is 100,one is 1000.

Thanks!

from volepsi.

It's possible I didn't test that case and there is a bug. I'll take a look when I find time.

from volepsi.

Thank you for your reply, what's more, I want to know the difference between the fucntion RsOpprf_eval_blk_test and RsOpprf_eval_blk_mtx_test in RsOpprf_Tests.h, what does mtx means?
another question is:
In RS Eurocrypt'21, you construct the OPPRF using XoPaXoS and OPRF, where the OPRF is based on VOLE and PaXoS(OKVS) ,
and in RR CCS'22, you improves the OKVS and VOLE of RS'21, does the code RsOpprf.h is constructed using the optimized OKVS(PaXoS) and sub-field Vole?

from volepsi.

you will need to set https://github.com/Visa-Research/volepsi/blob/main/volePSI/RsOprf.h#L25 to be true on the OPRF that is used by the OPPRF https://github.com/Visa-Research/volepsi/blob/main/volePSI/RsOpprf.h#L93

Otherwise is should be malicious secure.

To achieve malicious security against both parties， I set both the OPRF sender https://github.com/Visa-Research/volepsi/blob/main/volePSI/RsOprf.h#L25 and OPRF receiver https://github.com/Visa-Research/volepsi/blob/main/volePSI/RsOprf.h#L51 to be true.

from volepsi.