How to use the libOTe_Tests about libote

[ladnir]

the following should work

python3 ./build.py
./out/build/linux/frontend/frontend_libOTe -u kkrt

[StarKirby1102]

Thank you, this worked. Another qustion: My purpose is not to run the whole project. My own project cpp file has the interfaces of libOTe. I copied it to the same root directory and want to generate an executable file through g++ -o test test.cpp. Is this possible?

[ladnir]

Yes but I suggest cmake. Here's a project template https://github.com/ladnir/ProjectTemplate

If you want to directly compile with g++, you'll need to link the the libraries in out/install/linux/lib/ and libOTe, cryptoTools in out/build/linux/...

Then also do the includes out/install/linux and libOTe/, cryptoTools/cryptoTools

[StarKirby1102]

@ladnir Thanks! I'll try it.

[StarKirby1102]

Sorry, I meet the anther question when I cmake the test demo:
When I cd /home/user/libOTe/libOTe_Tests/cmakeTests to run the test:

I type cmake . -D CMAKE_PREFIX_PATH=/home/user/libOTe/out/build/linux into the terminal, the error is:

And when I type cmake . -D CMAKE_PREFIX_PATH=/home/user/libOTe/out/build/linux into the terminal again, the error is:

But I remember when I install the libOTe I used relic.

[StarKirby1102]

Hello teacher, the front span-lite issue had been solved. However, when I cmake . another question occur:

CMake Error at libOTe/out/build/linux/cryptoTools/cryptoToolsDepHelper.cmake:92 (message):
  could not find relic.  Add -DFETCH_RELIC=ON or -DFETCH_ALL=ON to auto
  download.

How to solve that, thanks! Sorry to disturb you again.

[ladnir]

You need to install relic and whatever else you are using (eg span). You can install them to that out/install/linux dir using the main libOTe build.py script. This calls cmake which will build and install them.

[ladnir]

Also take a look at the ProjectTemplate Readme. It talks about some of this

[StarKirby1102]

You need to install relic and whatever else you are using (eg span). You can install them to that out/install/linux dir using the main libOTe build.py script. This calls cmake which will build and install them.

I check my out/install/linux, I have installed the relic before cmake:
This is my out/install/linux dir, I'm not sure if it has been installed.

[ladnir]

Is your code on github? I can take a look

[StarKirby1102]

Is your code on github? I can take a look

Here is my code: I want to test the KKRT's N-choose-One OT, and I've copy the test demo to the main.cpp in the root dir. My purpose is to use its interface but I can't cmake it. Thank you for helping!
Here's my code: https://github.com/StarKirby1102/KKRT

[ladnir]

change your headers to

#include "libOTe/TwoChooseOne/OTExtInterface.h"

#include "libOTe/Tools/Tools.h"
#include "libOTe/Tools/LinearCode.h"
#include <cryptoTools/cryptoTools/Network/Channel.h>
#include <cryptoTools/cryptoTools/Network/Session.h>
#include <cryptoTools/cryptoTools/Network/IOService.h>
#include <cryptoTools/cryptoTools/Common/Log.h>
#include <cryptoTools/cryptoTools/Common/TestCollection.h>

#include "libOTe/NChooseOne/Kkrt/KkrtNcoOtReceiver.h"
#include "libOTe/NChooseOne/Kkrt/KkrtNcoOtSender.h"

call cmake with -DCMAKE_PREFIX_PATH=path/to/libOTe. So assuming you are in your KKRT directory, call

cmake . -DCMAKE_PREFIX_PATH=./libOTe

[StarKirby1102]

change your headers to

#include "libOTe/TwoChooseOne/OTExtInterface.h"

#include "libOTe/Tools/Tools.h"
#include "libOTe/Tools/LinearCode.h"
#include <cryptoTools/cryptoTools/Network/Channel.h>
#include <cryptoTools/cryptoTools/Network/Session.h>
#include <cryptoTools/cryptoTools/Network/IOService.h>
#include <cryptoTools/cryptoTools/Common/Log.h>
#include <cryptoTools/cryptoTools/Common/TestCollection.h>

#include "libOTe/NChooseOne/Kkrt/KkrtNcoOtReceiver.h"
#include "libOTe/NChooseOne/Kkrt/KkrtNcoOtSender.h"

call cmake with -DCMAKE_PREFIX_PATH=path/to/libOTe. So assuming you are in your KKRT directory, call

cmake . -DCMAKE_PREFIX_PATH=./libOTe

I try it follow your answer, but a new question has occured.

  Could not find a package configuration file provided by "span-lite" with
  any of the following names:

    span-liteConfig.cmake
    span-lite-config.cmake

However, I have install my project before runninig.

Is there something missing?

[ladnir]

Here's what I did. I have two folders,

LibOTe
KKRT

I build libOTe as normal.

Then I cloned your repo (without libOTe as a sub module)

Fixed your headers

Called cmake . -DCMAKE_PREFIX_PATH=../libOTe

In theory, libOTe can be anywhere.

[StarKirby1102]

Here's what I did. I have two folders,

LibOTe KKRT

I build libOTe as normal.

Then I cloned your repo (without libOTe as a sub module)

Fixed your headers

Called cmake . -DCMAKE_PREFIX_PATH=../libOTe

In theory, libOTe can be anywhere.

Maybe missing some denpendencies when downloading, building or installing, my district can't use vpn to dowanload some resouce. Could you please send me an installed libOTe version(zip or tar.gz) to me or help me to install my project? I'm a rookie, I really want to try to use it , thanks!

[ladnir]

No, maybe you should get off VPN.

Take a look at the cryptoTools/thirdparty/getXXXX.cmake files. You can manually download them and place them in the thirdparty folder and run the build.

You'll only need to do this for cryptoTools/thirdparty ( span, relic, boost). But libOTe has other dependancies depending on how it's configured.

[StarKirby1102]

I rebuild the libOTe, successfully run the test! Thanks.