Preprocessing prime is not compatible

[jiaaaarui]

This is a follow-up to this issue

I applied the commit patch and attempted again. I ran ./mascot-offline.x -p 0/1 -N 2 -P 115792089210356248762697446949407573530086143415290314195533631308867097853951 export-a2b on two terminals and got the output

115792089210356248762697446949407573530086143415290314195533631308867097853951 is not compatible with our encryption scheme, must be 1 modulo 32768

is this output expected? The preprocessing works with the fake offline, which leads me to think it should work here as well.

[mkskeller]

b47c9bb should fix this.

[jiaaaarui]

Thank you for your response. However, when I run it now, it seems that no edabits are being created in preprocessesing. I can provide more details later.

[jiaaaarui]

I am running ./mascot-offline.x -p 0/1 -N 2 -P 115792089210356248762697446949407573530086143415290314195533631308867097853951 export-a2b as before. I then run ./mascot-party.x -F -P 115792089210356248762697446949407573530086143415290314195533631308867097853951 -N 2 0/1 exp ort-b2a which gives error message

Fatal error at export-b2a-b2a-1:118 (DABIT): Something is wrong with the preprocessing data on disk: IO problem when buffering SPDZ gfp daBits from Player-Data//2-p-256/daBits-p-P0
Have you run the right program for generating it, such as './Fake-Offline.x 2 -P 115792089210356248762697446949407573530086143415290314195533631308867097853951'?

I checked the Player-Data directory, and it returns

$ ls Player-Data/2-p-256/
Opens-p-P0  Params-Data           Player-MAC-Keys-p-P1
Opens-p-P1  Player-MAC-Keys-p-P0

is there a special argument i need to create edabits when invoking mascot-party.x?

[mkskeller]

It looks like you're running the offline phase for export-a2b but the online phase for export-b2a. Nevertheless, the offline phase should produce some edaBits in the Player-Data directory. What commit are you using?

[jiaaaarui]

I am on an older committ but with the patch applied. I will try again on a fresh commit and see how it fairs.