I am trying to aggregate public shares in the context of BLS TSS.
The problem is, DKGBLSWrapper::CreateTEPublicKey is declared at DKGBLSWrapper.h#L55 . However, its definitions does not appear in DKGBLSWrapper.cpp.

There is an equivalent API DKGTEWrapper::CreateTEPublicKey implemented at DKGTEWrapper.cpp#L81, which returns TEPublicKey . But no explicit conversion method from TEPublicKey to BLSPublicKey is provided.

@olehnikolaiev Could you fix this problem? Thanks.

┆Issue is synchronized with this Jira Task

• asymmetrical pairing to use same BLS keys both for signing blocks and encrypting / decrypting transactions

┆Issue is synchronized with this Jira Task

i build passed all things. and got error when use this lib in myown project mytest.cpp
here is myproject structure:

-ReplicaTest/
--build/
--include/
----libBLS/
--src/
--CMakeFile
--mytest.cpp

CMakeFiles:

cmake_minimum_required(VERSION 3.5.1)
project(ReplicaTest)
set(CMAKE_CXX_STANDARD 14)
#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -Wall -Wextra -pthread")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -Wall -Wextra -pthread -L${PROJECT_SOURCE_DIR}/include/libBLS/deps/libff/build/libff -lff")
set_directory_properties(${PROJECT_SOURCE_DIR}/bin)
include_directories(/usr/include)
include_directories(${PROJECT_SOURCE_DIR}/include)
include_directories(${PROJECT_SOURCE_DIR}/include/libBLS)
include_directories(${PROJECT_SOURCE_DIR}/include/libBLS/bls)
include_directories(${PROJECT_SOURCE_DIR}/src)

add_executable(ReplicaTest
        mytest.cpp
        include/libBLS/libBLS.h)

and mytest.cpp is (copy from docs/using threshold signatur.md):

#include <libBLS.h>
#include <random>
#include <cassert>
using namespace std;
int main() {
    size_t num_all = 4;
    size_t num_signed = 3;

    std::vector<size_t> participants(num_all);

    for (size_t i = 0; i < num_signed; ++i)
        participants.at(i) = i + 1; //set participants indices 1,2,3

    std::shared_ptr<std::vector<std::shared_ptr<BLSPrivateKeyShare>>> Skeys =
            BLSPrivateKeyShare::generateSampleKeys(num_signed, num_all)->first;

    std::default_random_engine rand_gen((unsigned int) time(0));
    std::array<uint8_t, 32> hash_byte_arr;
    for ( size_t i = 0; i < 32 ; i++){        //generate random hash
        hash_byte_arr.at(i) = rand_gen() % 255;
    }
    std::shared_ptr<std::array<uint8_t, 32>> hash_ptr =
            std::make_shared< std::array<uint8_t, 32> >(hash_byte_arr);

    BLSSigShareSet sigSet(num_signed, num_all);

    for (size_t i = 0; i < num_signed; ++i) {
        std::shared_ptr<BLSPrivateKeyShare> skey = Skeys->at(i);

// sign with private key of each participant
        std::shared_ptr<BLSSigShare> sigShare = skey->sign(hash_ptr, participants.at(i));

        sigSet.addSigShare(sigShare);
    }

    std::shared_ptr<BLSSignature> common_sig_ptr = sigSet.merge();         //create common signature

//create common private key from private keys of each participant
    BLSPrivateKey common_skey
            (Skeys, std::make_shared<std::vector<size_t>>(participants), num_signed, num_all);

//create common public key from common private key
    BLSPublicKey common_pkey(*(common_skey.getPrivateKey()), num_signed, num_all);

// verify common signature with common public key
    assert(common_pkey.VerifySig(hash_ptr, common_sig_ptr, num_signed, num_all));
}

then run make in build got this error :

[ 50%] Building CXX object CMakeFiles/ReplicaTest.dir/test.cpp.o
In file included from ReplicaTest/include/libBLS/bls/BLSSignature.h:27:0,
                 from /ReplicaTest/include/libBLS/bls/BLSPublicKey.h:28,
                 from ReplicaTest/include/libBLS/bls/BLSPrivateKeyShare.h:28,
                 from ReplicaTest/include/libBLS/bls/BLSPrivateKey.h:28,
                 from ReplicaTest/include/libBLS/libBLS.h:27,
                 from /ReplicaTest/test.cpp:5:
/home/z/GraDesign/test/ReplicaTest/include/libBLS/bls/bls.h:35:10: fatal error: libff/algebra/curves/alt_bn128/alt_bn128_pp.hpp: No such file or directory
 #include <libff/algebra/curves/alt_bn128/alt_bn128_pp.hpp>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
CMakeFiles/ReplicaTest.dir/build.make:62: recipe for target 'CMakeFiles/ReplicaTest.dir/test.cpp.o' failed
make[2]: *** [CMakeFiles/ReplicaTest.dir/test.cpp.o] Error 1
CMakeFiles/Makefile2:75: recipe for target 'CMakeFiles/ReplicaTest.dir/all' failed
make[1]: *** [CMakeFiles/ReplicaTest.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

how to fix this situation? did i not point to libff or libBLS in cmakefile?
thanks.

Turn off Open SSL optmizations in skaled, consensus and libBLS

┆Issue is synchronized with this Jira Task

add npm package to improve UX

┆Issue is synchronized with this Jira Story

MAGIC_STRING is used to mark encrypted output for consensus, so they can be easily identified

┆Issue is synchronized with this Jira Task

unit tests fail from time to time in random places. need to find the root cause and fix it to make the nighly and unit testing flow more smooth

┆Issue is synchronized with this Jira Bug

I am trying to generate sample keys with BLSPrivateKeyShare::generateSampleKeys following step 2 in using-threshold-signatures.md. However, the two assertions in the code below failed, where keys_->second->getRequiredSigners() and keys_->second->getTotalSigners() both returned 0.

My code:

#include "libBLS.h"

int main()
{
	auto keys_ = BLSPrivateKeyShare::generateSampleKeys(20, 20);
	assert(keys_->second->getRequiredSigners() == 20); // Assertion `keys_->second->getRequiredSigners() == 20' failed
	assert(keys_->second->getTotalSigners() == 20); // Assertion `keys_->second->getTotalSigners() == 20' failed
	return 0;
}

For your convenience, keys_ is of type

std::shared_ptr< std::pair < 
    std::shared_ptr< std::vector< std::shared_ptr< BLSPrivateKeyShare > > >,
    std::shared_ptr< BLSPublicKey > 
> >

My CMake linking configuration is

target_link_libraries(project-name
    libsodium.a
    libbls.a
    libff.a
    libgmpxx.a
    libgmp.a
    libgcov.a
    libssl.a
    libcrypto.a
    libz.so
    libpthread.so
    libdl.so
) 

Am I using the BLSPrivateKeyShare::generateSampleKeys function correctly? Thanks!

The is_well_formed check in libff::alt_bn128_G2 is insufficient. It checks that the projective coordinates (X,Y,Z) satisfy the equation of the curve, but G2 is actually a subgroup of the elliptic curve points. An attacker that controls n-t participants, where n are all participants and t+1 is the number of participants required to sign a message with the common public key, will always be able to corrupt the public key so it is almost impossible to create a common signature, allowing the attacker to escape later detection during the signing phase. With a probability of 1/10069 the attacker can do the same with n-t participants.

┆Issue is synchronized with this Jira Bug

Describe the bug
A clear and concise description of what the bug is.

Los of libbls compiler warnings in skaled build. It make it hard to analyze build logs

To Reproduce
Build skaled

Expected behavior
Please add flags to cmake file of libbls to disable warning

update threshold encryption implementation according to docs including:

• fix aes key size and IV size
• fix aes mode

┆Issue is synchronized with this Jira Task

Describe the bug
I believe the individual class instances are not thread-safe, but I expected that different class instances can be accessed by different threads. This does not seem to be the case and I am running into segmentation violations due to null pointer dereference(?).

To Reproduce
Build and run the following code:

#include <iostream>
#include <thread>

#include <bls/BLSPrivateKey.h>
#include <bls/BLSPublicKeyShare.h>
#include <bls/BLSSigShare.h>
#include <bls/BLSSigShareSet.h>

#include <libff/common/profiling.hpp>

int inited = 0;
void init() {
    if ( inited == 1 )
        return;
    inited = 1;
    libff::init_alt_bn128_params();
    libff::inhibit_profiling_info = true;
}

void bls_sign_and_verify_test( void ) {
    size_t num_all = 3;
    size_t num_signed = 2;

    std::vector< size_t > participants( num_all );
    for ( size_t i = 0; i < num_signed; ++i )
        participants.at( i ) = i + 1;

    std::shared_ptr< std::vector< std::shared_ptr< BLSPrivateKeyShare > > > Skeys =
        std::make_shared< std::vector< std::shared_ptr< BLSPrivateKeyShare > > >();
    Skeys->emplace_back( std::make_shared< BLSPrivateKeyShare >(
        "13495860062249993865734902048793710375616417009831840885382880613253415974387",
        num_signed, num_all ) );
    Skeys->emplace_back( std::make_shared< BLSPrivateKeyShare >(
        "14432995725644194091092767544667816115262418605728523769974352756346168301805",
        num_signed, num_all ) );
    Skeys->emplace_back( std::make_shared< BLSPrivateKeyShare >(
        "15370131389038394316450633040541921854908420201625206654565824899438920629223",
        num_signed, num_all ) );

    std::shared_ptr< std::vector< std::string > > pkeys =
        std::make_shared< std::vector< std::string > >();
    pkeys->emplace_back( std::string(
        "3872398145671381750051310361161029866141599796961754550720954525373154029641" ) );
    pkeys->emplace_back( std::string(
        "18913992266273626846214164704318441079079824927432633934738241159011855215319" ) );
    pkeys->emplace_back( std::string(
        "7545865829532108925029707269152845926323190473050391644910514830901650171418" ) );
    pkeys->emplace_back( std::string(
        "6044262478369222839265815623050805443715326867730809093545852876997568163314" ) );
    std::shared_ptr< BLSPublicKey > common_pkey =
        std::make_shared< BLSPublicKey >( pkeys, num_signed, num_all );

    std::default_random_engine rand_gen( ( unsigned int ) time( 0 ) );
    std::array< uint8_t, 32 > hash_byte_arr;
    std::string hello = "hello";
    for ( size_t i = 0; i < 32; i++ ) {
        hash_byte_arr.at( i ) = rand() % 255;
    }
    std::shared_ptr< std::array< uint8_t, 32 > > hash_ptr =
        std::make_shared< std::array< uint8_t, 32 > >( hash_byte_arr );

    BLSSigShareSet sigSet( num_signed, num_all );

    for ( size_t i = 0; i < num_signed; i++ ) {
        auto share = Skeys->at( i );
        auto sigShare = share->signWithHelper( hash_ptr, participants.at( i ) );
        sigSet.addSigShare( sigShare );
    }

    std::shared_ptr< BLSSignature > common_sig_ptr = sigSet.merge();  // create common signature

    // create common private key from private keys of each participant
    BLSPrivateKey common_skey(
        Skeys, std::make_shared< std::vector< size_t > >( participants ), num_signed, num_all );

    if ( common_pkey->VerifySig( hash_ptr, common_sig_ptr, num_signed, num_all ) ) {
        printf( "verified!!!\n" );
    }

    // verify common signature with common public key
    assert( common_pkey->VerifySig( hash_ptr, common_sig_ptr, num_signed, num_all ) );
}

void* thread_run(void* _id) {
    int id = *((int*)_id);
    init();
    std::cout << id << std::endl;
    for ( int i = 0; i < 100; i++ ) {
        bls_sign_and_verify_test();
    }
    return NULL;
}

int main() {
    std::cout << "Spawning 3 threads...\n";
    pthread_t threads[3];
    for (int i=0; i < 3; i++)
    {
        pthread_create( &threads[i], NULL, &thread_run, &i );
    }
    std::cout << "Done spawning threads. Now waiting for them to join:\n";
    void *res;
    for (int i=0; i < 3; i++)
    {
        pthread_join(threads[i], &res);
    }
    std::cout << "All threads joined!\n";
    return 0;
}

Expected behavior
Individual threads should be able to produce and verify signatures without any issues.

Environment:

• OS Platform and Distribution (e.g. Linux Ubuntu 16.04): Ubuntu 18.04
• GCC/Compiler version: 7.5.0

Additional context
Add any other context about the problem here, such as logs or source code. Please link to a GitHub Gist instead of posting any lengthy content.

hi, i wonder if the project can be compiled in windows. How to deal with “bash ./build.sh” in windows environment.

move to GA to have better CI process

┆Issue is synchronized with this Jira Task

Hello!
When I compile threshold_encryption/TEPrivateKeyShare.cpp, there is a error:

threshold_encryption/TEPrivateKeyShare.cpp: In static member function ‘static std::pair<std::shared_ptr<std::vector<std::shared_ptr > >, std::shared_ptr > TEPrivateKeyShare::generateSampleKeys(size_t, size_t)’:

threshold_encryption/TEPrivateKeyShare.cpp:128:15: error: missing template arguments before ‘keys’
128 | std::pair keys = std::make_pair(
| ^~~~
threshold_encryption/TEPrivateKeyShare.cpp:131:12: error: ‘keys’ was not declared in this scope; did you mean ‘skeys’?
131 | return keys;

the codes are:

std::pair keys = std::make_pair(
std::make_shared< std::vector< std::shared_ptr< TEPrivateKeyShare > > >( skey_shares ),
std::make_shared< TEPublicKey >( common_public ) );
return keys;

I think the type of variable should be indicated before keys .Am I right? Is there any other solution?

• PRD: SYSTEM UPGRADE
• Warning: Github Actions will drop Ubuntu 18.04 runner on April 1st (actions/runner-images#6002), which will affect both development and testing.

We need to update libbls to ubuntu 20.04 as it is a part of sgxwallet. Need to:

• Verify its compatibility with ubuntu 20.04 and 18.04
• Fix incompatibilities if presented
• Update CI to use ubuntu 20.04

Implement Gas Costs reimbursement logic according to the spec: https://skalelabs.atlassian.net/wiki/spaces/SKALE/pages/1713143812/Gas+cost+reimbursement

┆Issue is synchronized with this Jira Task

A stack buffer overflow vulnerability is present in the BLSSignature.cpp and BLSSigShare.cpp. The toString() methods has a fixed buffer of size 512 called str. The function utilizes the hint variable in the gmp_sprintf to add it to the str buffer. However, there is no check on the size of the hint variable which can easily overflow the str buffer of size 512. The hint variable is in the control of the user, and therefore, a buffer overflow can be executed.

hi, i found the "toString" function in TEPrivateKeyShare and TEPublicKeyShare only encodes the PublicKey and PrivateKey, leaving alone other arguments "SignedTx, requiredSigners and requiredSigners". If i want to recover a TEPrivatekeyshare directly from bytes, could you give a complete function which will encode the entire arguments.

Thank you.

Hello,I have a cmake error when I do the following command on Ubuntu 16.04TLS:

cmake -H. -Bbuild

and then ,the terminal shows that:

CMake Error at CMakeLists.txt:10 (message):
Require at least gcc-7.0

-- Configuring incomplete, errors occurred!

but when I check the gcc version by gcc -v
it shows:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.5.0-3ubuntu116.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu116.04)

I think my gcc version have reached this lib, but why I have this error? How can I fix it?

there were some changes in libBLS API which break compatibility with consensus module. we need to review and fix it

┆Issue is synchronized with this Jira Task

I got a problem when I "cmake --build build -- -j$(nproc)" in ubuntu 18.04 ,gcc version 7.5.0, g++ version 7.5.0

the error are

"Sysctl: could not obtain the file status of /proc/sys/hw/ncpu (stat): there is no file or directory
[ 1%] Building CXX object threshold_encryption/CMakeFiles/te.dir/TEPrivateKey.cpp.o
[ 3%] Building CXX object threshold_encryption/CMakeFiles/te.dir/threshold_encryption.cpp.o
[ 7%] Building CXX object threshold_encryption/CMakeFiles/te.dir//dkg/DKGTEWrapper.cpp.o
[ 9%] Building CXX object threshold_encryption/CMakeFiles/te.dir/TEPrivateKeyShare.cpp.o
[ 12%] Building CXX object threshold_encryption/CMakeFiles/te.dir/TEDecryptSet.cpp.o
[ 14%] Building CXX object threshold_encryption/CMakeFiles/te.dir/TEPublicKeyShare.cpp.o
[ 10%] Building CXX object threshold_encryption/CMakeFiles/te.dir//dkg/dkg.cpp.o
[ 16%] Building CXX object threshold_encryption/CMakeFiles/te.dir//tools/utils.cpp.o
[ 5%] Building CXX object threshold_encryption/CMakeFiles/te.dir/TEPublicKey.cpp.o
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:62: recipe for target 'threshold_encryption/CMakeFiles/te.dir/threshold_encryption.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir/threshold_encryption.cpp.o] Error 1
make[2]: *** Waiting for unfinished tasks....
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:134: recipe for target 'threshold_encryption/CMakeFiles/te.dir/TEPrivateKey.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir/TEPrivateKey.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
[ 18%] Building CXX object threshold_encryption/CMakeFiles/te.dir//dkg/DKGTESecret.cpp.o
threshold_encryption/CMakeFiles/te.dir/build.make:110: recipe for target 'threshold_encryption/CMakeFiles/te.dir/TEPrivateKeyShare.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir/TEPrivateKeyShare.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:230: recipe for target 'threshold_encryption/CMakeFiles/te.dir//dkg/DKGTEWrapper.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir//dkg/DKGTEWrapper.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:86: recipe for target 'threshold_encryption/CMakeFiles/te.dir/TEDecryptSet.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir/TEDecryptSet.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:206: recipe for target 'threshold_encryption/CMakeFiles/te.dir//dkg/dkg.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir//dkg/dkg.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:278: recipe for target 'threshold_encryption/CMakeFiles/te.dir//tools/utils.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir//tools/utils.cpp.o] Error 1
threshold_encryption/CMakeFiles/te.dir/build.make:158: recipe for target 'threshold_encryption/CMakeFiles/te.dir/TEPublicKey.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir/TEPublicKey.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:182: recipe for target 'threshold_encryption/CMakeFiles/te.dir/TEPublicKeyShare.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir/TEPublicKeyShare.cpp.o] Error 1
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
threshold_encryption/CMakeFiles/te.dir/build.make:254: recipe for target 'threshold_encryption/CMakeFiles/te.dir//dkg/DKGTESecret.cpp.o' failed
make[2]: *** [threshold_encryption/CMakeFiles/te.dir//dkg/DKGTESecret.cpp.o] Error 1
CMakeFiles/Makefile2:777: recipe for target 'threshold_encryption/CMakeFiles/te.dir/all' failed
make[1]: *** [threshold_encryption/CMakeFiles/te.dir/all] Error 2
make[1]: *** 正在等待未完成的任务....
[ 20%] Building CXX object CMakeFiles/bls.dir/bls/bls.cpp.o
[ 21%] Building CXX object CMakeFiles/bls.dir/bls/BLSPrivateKeyShare.cpp.o
[ 23%] Building CXX object CMakeFiles/bls.dir/bls/BLSPublicKeyShare.cpp.o
[ 25%] Building CXX object CMakeFiles/bls.dir/bls/BLSPublicKey.cpp.o
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
[ 27%] Building CXX object CMakeFiles/bls.dir/bls/BLSPrivateKey.cpp.o
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
[ 29%] Building CXX object CMakeFiles/bls.dir/bls/BLSSigShareSet.cpp.o
[ 30%] Building CXX object CMakeFiles/bls.dir/bls/BLSSignature.cpp.o
CMakeFiles/bls.dir/build.make:62: recipe for target 'CMakeFiles/bls.dir/bls/bls.cpp.o' failed
make[2]: *** [CMakeFiles/bls.dir/bls/bls.cpp.o] Error 1
make[2]: *** 正在等待未完成的任务....
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
CMakeFiles/bls.dir/build.make:86: recipe for target 'CMakeFiles/bls.dir/bls/BLSPrivateKeyShare.cpp.o' failed
make[2]: *** [CMakeFiles/bls.dir/bls/BLSPrivateKeyShare.cpp.o] Error 1
[ 32%] Building CXX object CMakeFiles/bls.dir/dkg/dkg.cpp.o
[ 34%] Building CXX object CMakeFiles/bls.dir/dkg/DKGBLSWrapper.cpp.o
[ 36%] Building CXX object CMakeFiles/bls.dir/bls/BLSSigShare.cpp.o
[ 38%] Building CXX object CMakeFiles/bls.dir/dkg/DKGBLSSecret.cpp.o
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
[ 40%] Building CXX object CMakeFiles/bls.dir/tools/utils.cpp.o
CMakeFiles/bls.dir/build.make:158: recipe for target 'CMakeFiles/bls.dir/bls/BLSPublicKey.cpp.o' failed
make[2]: *** [CMakeFiles/bls.dir/bls/BLSPublicKey.cpp.o] Error 1
[ 41%] Building CXX object CMakeFiles/bls.dir/third_party/cryptlite/base64.cpp.o
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
cc1plus: error: -Werror=deprecated-copy: no option -Wdeprecated-copy
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Detecting CXX [-std=c++11] compiler features compiled with the following output:
Change Dir: /home/yorknb/Documents/libBLS/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_29488/fast"
/usr/bin/make -f CMakeFiles/cmTC_29488.dir/build.make CMakeFiles/cmTC_29488.dir/build
make[1]: 进入目录“/home/yorknb/Documents/libBLS/build/CMakeFiles/CMakeTmp”
Building CXX object CMakeFiles/cmTC_29488.dir/feature_tests.cxx.o
/usr/bin/g++ -std=c++11 -o CMakeFiles/cmTC_29488.dir/feature_tests.cxx.o -c /home/yorknb/Documents/libBLS/build/CMakeFiles/feature_tests.cxx
Linking CXX executable cmTC_29488
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_29488.dir/link.txt --verbose=1
/usr/bin/g++ CMakeFiles/cmTC_29488.dir/feature_tests.cxx.o -o cmTC_29488
make[1]: 离开目录“/home/yorknb/Documents/libBLS/build/CMakeFiles/CMakeTmp”

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Detecting CXX [-std=c++98] compiler features compiled with the following output:
Change Dir: /home/yorknb/Documents/libBLS/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_e4d89/fast"
/usr/bin/make -f CMakeFiles/cmTC_e4d89.dir/build.make CMakeFiles/cmTC_e4d89.dir/build
make[1]: 进入目录“/home/yorknb/Documents/libBLS/build/CMakeFiles/CMakeTmp”
Building CXX object CMakeFiles/cmTC_e4d89.dir/feature_tests.cxx.o
/usr/bin/g++ -std=c++98 -o CMakeFiles/cmTC_e4d89.dir/feature_tests.cxx.o -c /home/yorknb/Documents/libBLS/build/CMakeFiles/feature_tests.cxx
Linking CXX executable cmTC_e4d89
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_e4d89.dir/link.txt --verbose=1
/usr/bin/g++ CMakeFiles/cmTC_e4d89.dir/feature_tests.cxx.o -o cmTC_e4d89
make[1]: 离开目录“/home/yorknb/Documents/libBLS/build/CMakeFiles/CMakeTmp”

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"

please help me.

(Environment: CLion remote development; CMake 3.22.1; gcc 9.4.0)

I got linking problem while trying to invoke libBLS. And I have changed it to rather simple code:

// main.cpp

#include <iostream>
#include "inc/libBLS.h"

int main() {
    DKGBLSWrapper dkg_obj(3, 4);
    std::cout << "Hello, World!" << std::endl;
    return 0;
}

The CMakeLists configuration I am using is

project(tomchain)
set(CMAKE_CXX_STANDARD 14)

include_directories(inc)
link_directories(lib)

add_executable(tomchain main.cpp)

target_link_libraries(tomchain
        libbls.a
        libgmp.a
        libgcov.a
        libff.a
        libssl.a
        libcrypto.a
        libpthread.a
        libdl.so
        )

It does not work with either libgmp.a or libgmp.so. And the error message is:

Consolidate compiler generated dependencies of target tomchain
[ 50%] Linking CXX executable tomchain
/tmp/tmp.vlK1F0idmX/lib/libff.a(alt_bn128_g1.cpp.o): In function `libff::alt_bn128_G1::print_coordinates() const':
alt_bn128_g1.cpp:(.text+0x81b): undefined reference to `__gmp_printf'
/tmp/tmp.vlK1F0idmX/lib/libff.a(alt_bn128_g1.cpp.o): In function `libff::alt_bn128_G1::print() const':
alt_bn128_g1.cpp:(.text+0xc1a): undefined reference to `__gmp_printf'
/tmp/tmp.vlK1F0idmX/lib/libff.a(alt_bn128_g2.cpp.o): In function `libff::alt_bn128_G2::print_coordinates() const':
alt_bn128_g2.cpp:(.text+0xa5f): undefined reference to `__gmp_printf'
/tmp/tmp.vlK1F0idmX/lib/libff.a(alt_bn128_g2.cpp.o): In function `libff::alt_bn128_G2::print() const':
alt_bn128_g2.cpp:(.text+0x13a4): undefined reference to `__gmp_printf'
collect2: error: ld returned 1 exit status
CMakeFiles/tomchain.dir/build.make:96: recipe for target 'tomchain' failed
make[2]: *** [tomchain] Error 1
CMakeFiles/Makefile2:82: recipe for target 'CMakeFiles/tomchain.dir/all' failed
make[1]: *** [CMakeFiles/tomchain.dir/all] Error 2
Makefile:90: recipe for target 'all' failed
make: *** [all] Error 2

All information around this problem I can find is https://github.com/zcash/zcash/issues/1992. But it seems not so relevant to this.

Could you help me with this problem? Thanks.

┆Issue is synchronized with this Jira Task

please remove boost and use straight c++17

┆Issue is synchronized with this Jira Task

compile libBLS (or specific file) with emscripten (or clang --traget=wasm) to be albe to call them from browser, integrate it in browser

┆Issue is synchronized with this Jira Task

Describe the bug

As dependency, glibtool is noted in README.md. However, it doesn't exist in brew. Did you mean libtool?

To Reproduce
Steps to reproduce the behavior:
1. Install dependencies by brew install flex bison glibtool automake cmake pkg-config yasm
2. See error: glibtool is not found.

Expected behavior
Package should be installed without an error

Environment:

• MacOS 10.15.3

I am trying to distribute secret shares in the context of DKG.
My plan is to serialize the libff::alt_bn128_Fr objects that DKGBLSWrapper::createDKGSecretShares produces, and distribute them to other participants through TCP network.

However, I got linking errors with the overloaded operator<< of libff::alt_bn128_Fr.

The code segment relevant to this issue is

DKGBLSWrapper dkg_obj(t, n);

// serialize public shares
std::shared_ptr< std::vector< libff::alt_bn128_G2 > > public_shares = dkg_obj.createDKGPublicShares();
std::ostringstream oss_a;
oss_a << public_shares->at(0); // no error reported

// serialize private shares
std::shared_ptr< std::vector< libff::alt_bn128_Fr > > private_shares = dkg_obj.createDKGSecretShares();
std::ostringstream oss_b;
oss_b << private_shares->at(0); // FIXME: undefined reference to overloaded operator

The error info is

    in function `std::ostream& libff::operator<< <4l>(std::ostream&, libff::bigint<4l> const&)': 
    /libff/algebra/fields/bigint.tcc:192: undefined reference to `operator<<(std::ostream&, __mpz_struct const*)'

My linking configs of cmake is

target_link_libraries(project_name
    libsqlite3.so
    libmysqlcppconn.so
    libsodium.a
    libbls.a
    libff.a
    libgmp.so
    libgcov.so
    libssl.so
    libcrypto.a
    libz.so
    libmuduo_net.a
    libmuduo_base.a
    libpthread.so
    libdl.so
)

and cmake reported no errors during generation.

Could you help me with this problem?
In other words, what is the correct way to serialize and distribute public and private shares during DKG? Thanks.

┆Issue is synchronized with this Jira Task

Describe the bug
The use of the following BLSPublicKey constructor

 BLSPublicKey(
        std::shared_ptr< std::map< size_t, std::shared_ptr< BLSPublicKeyShare > > > map_pkeys_koefs,
        size_t _requiredSigners, size_t _totalSigners );

leads to libc++abi.dylib: terminating with uncaught exception of type std::out_of_range: vector

To Reproduce
The following minimal example can be used to reproduce the error

size_t n = 3;
size_t t = 2;

DKGBLSWrapper dkg_obj1(t, n);
DKGBLSWrapper dkg_obj2(t, n);
DKGBLSWrapper dkg_obj3(t, n);

std::shared_ptr <std::vector<libff::alt_bn128_G2>> public_shares1 = dkg_obj1.createDKGPublicShares();
std::shared_ptr <std::vector<libff::alt_bn128_Fr>> private_shares1 = dkg_obj1.createDKGSecretShares();

std::shared_ptr <std::vector<libff::alt_bn128_G2>> public_shares2 = dkg_obj2.createDKGPublicShares();
std::shared_ptr <std::vector<libff::alt_bn128_Fr>> private_shares2 = dkg_obj2.createDKGSecretShares();

std::shared_ptr <std::vector<libff::alt_bn128_G2>> public_shares3 = dkg_obj3.createDKGPublicShares();
std::shared_ptr <std::vector<libff::alt_bn128_Fr>> private_shares3 = dkg_obj3.createDKGSecretShares();

// Participant 1
std::shared_ptr <std::vector <libff::alt_bn128_Fr>>  private_shares_collected1 = std::make_shared<std::vector <libff::alt_bn128_Fr>>();
private_shares_collected1->push_back(private_shares1->at(0));
private_shares_collected1->push_back(private_shares2->at(0));
private_shares_collected1->push_back(private_shares3->at(0));
BLSPrivateKeyShare privateKeyShare1 = dkg_obj1.CreateBLSPrivateKeyShare(private_shares_collected1);
BLSPublicKeyShare publicKeyShare1(*(privateKeyShare1.getPrivateKey()), t, n);

// Participant 2
std::shared_ptr <std::vector <libff::alt_bn128_Fr>>  private_shares_collected2 = std::make_shared<std::vector <libff::alt_bn128_Fr>>();
private_shares_collected2->push_back(private_shares1->at(1));
private_shares_collected2->push_back(private_shares2->at(1));
private_shares_collected2->push_back(private_shares3->at(1));
BLSPrivateKeyShare privateKeyShare2 = dkg_obj2.CreateBLSPrivateKeyShare(private_shares_collected2);
BLSPublicKeyShare publicKeyShare2(*(privateKeyShare2.getPrivateKey()), t, n);

// Participant 3
std::shared_ptr <std::vector <libff::alt_bn128_Fr>>  private_shares_collected3 = std::make_shared<std::vector <libff::alt_bn128_Fr>>();
private_shares_collected3->push_back(private_shares1->at(2));
private_shares_collected3->push_back(private_shares2->at(2));
private_shares_collected3->push_back(private_shares3->at(2));
BLSPrivateKeyShare privateKeyShare3 = dkg_obj3.CreateBLSPrivateKeyShare(private_shares_collected3);
BLSPublicKeyShare publicKeyShare3(*(privateKeyShare3.getPrivateKey()), t, n);

std::map<size_t, std::shared_ptr< BLSPublicKeyShare>> publicKeyMap;
publicKeyMap[1] = std::make_shared<BLSPublicKeyShare>(publicKeyShare1);
publicKeyMap[2] = std::make_shared<BLSPublicKeyShare>(publicKeyShare2);
publicKeyMap[3] = std::make_shared<BLSPublicKeyShare>(publicKeyShare3);

BLSPublicKey commonPublicKey(std::make_shared<std::map<size_t, std::shared_ptr< BLSPublicKeyShare>>>(publicKeyMap), t, n);

Expected behavior
The constructor should produce a valid BLSPublicKey

Environment:

• OS Platform and Distribution (e.g. Linux Ubuntu 16.04): macOS Catalina
• GCC/Compiler version: clang v12.0.0

Additional context
Add any other context about the problem here, such as logs or source code. Please link to a GitHub Gist instead of posting any lengthy content.

┆Issue is synchronized with this Jira Task

I got a problem when I "cmake --build build -- -j$(nproc)" in ubuntu.

the error msgs are
"
[ 1%] Building CXX object libff/depends/CMakeFiles/zm.dir/ate-pairing/src/zm.cpp.o
cc1plus: error: -Werror=int-in-bool-context: no option -Wint-in-bool-context
libff/depends/CMakeFiles/zm.dir/build.make:62: recipe for target 'libff/depends/CMakeFiles/zm.dir/ate-pairing/src/zm.cpp.o' failed
make[2]: *** [libff/depends/CMakeFiles/zm.dir/ate-pairing/src/zm.cpp.o] Error 1
CMakeFiles/Makefile2:666: recipe for target 'libff/depends/CMakeFiles/zm.dir/all' failed
make[1]: *** [libff/depends/CMakeFiles/zm.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
"

What can I do for it?

Investigate gnark library, run and compile code for SKALE ZK:
https://github.com/ConsenSys/gnark

Hello！
I am trying to build the project from source.

I have run the following command.

sudo apt-get update
sudo apt-get install -y automake cmake build-essential libprocps-dev libtool\
                        pkg-config yasm texinfo autoconf flex bison clang-format-6.0
git clone https://github.com/skalenetwork/libBLS.git
cd libBLS
cd deps
bash ./build.sh
cd ..

cmake -H. -Bbuild

Until now , all steps above were done successfully.
When I run

cmake --build build -- -j$(nproc)

It came to the error as the title said:

....
[ 96%] Linking CXX executable bls_unit_test
[ 96%] Built target bls_unit_test
/home/bob/pkg/libBLS/test/unit_tests_dkg.cpp: In member function ‘void DkgAlgorithm::PolynomialValue::test_method()’:
/home/bob/pkg/libBLS/test/unit_tests_dkg.cpp:64:20: error: catching polymorphic type ‘class std::logic_error’ by value [-Werror=catch-value=]
64 | } catch ( std::logic_error ) {
| ^~~~~~~~~~~
[ 98%] Linking CXX executable generate_key_system
[ 98%] Built target generate_key_system
cc1plus: all warnings being treated as errors
make[2]: *** [CMakeFiles/dkg_unit_test.dir/build.make:63：CMakeFiles/dkg_unit_test.dir/test/unit_tests_dkg.cpp.o] error 1
make[1]: *** [CMakeFiles/Makefile2:506：CMakeFiles/dkg_unit_test.dir/all] error 2
make: *** [Makefile:141：all] error 2

Seeking help to fix this building error.

Host operating system

Description: Ubuntu 20.04.2 LTS

Compiler information

gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0

┆Issue is synchronized with this Jira Task

hi, i am interested about your projects for "threshold encryption" implementation, but comes across a question now. Why "init_alt_bn128_params()" was called many times during whole threshold encryption process. it seems to be a system params setup, which was generally regarded initialed only once, right? Could you give some explainations.
Thanks.

create threshold encryption sample app to illustrate methods usage and process

┆Issue is synchronized with this Jira Task

we need to implement the common encryption scheme to be able to receive different messages

┆Issue is synchronized with this Jira Task

Need to enable linter for libBLS to check c++ code format.

• Currently it is disabled:

 - name: Run format check
      run: |
        cd build
        #make bls-format-check

• Proposed to use separate linter as in skaled: https://github.com/skalenetwork/skaled/blob/develop/.github/workflows/clang-format-check.yml