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Link 404

The writeup here states:

Our work also address how to scale the necessary distributed key generation (DKG) protocol needed to bootstrap a BLS threshold signature scheme. We present these results in another post.

Unfortunately the link https://alinush.github.io/2020/03/12/2020/03/12/towards-scalable-vss.html to the other post is a 404.

error: conversion to ‘long int’ from ‘size_t {aka long unsigned int}’ may change the sign of the result [-Werror=sign-conversion]

When build the project by running make.sh, there is an [-Werror=sign-conversion] error.
Please see the detail:

ubuntu@ip-172-31-5-148:~/libpolycrypto$ make.sh
Making in '/home/ubuntu/builds/polycrypto/master/release' ...

[  1%] Building CXX object libpolycrypto/src/CMakeFiles/polycrypto.dir/FFThresh.cpp.o
[  2%] Building CXX object libpolycrypto/src/CMakeFiles/polycrypto.dir/KateDkg.cpp.o
[  4%] Building CXX object libpolycrypto/src/CMakeFiles/polycrypto.dir/AmtDkg.cpp.o
[  5%] Building CXX object libpolycrypto/src/CMakeFiles/polycrypto.dir/PolyCrypto.cpp.o
/home/ubuntu/libpolycrypto/libpolycrypto/src/PolyCrypto.cpp: In function ‘std::size_t boost::hash_value(const Fr&)’:
/home/ubuntu/libpolycrypto/libpolycrypto/src/PolyCrypto.cpp:114:68: error: conversion to ‘long int’ from ‘size_t {aka long unsigned int}’ may change the sign of the result [-Werror=sign-conversion]
     auto h = boost::hash_range<unsigned char*>(buf, buf + buf.size());
                                                                    ^
cc1plus: all warnings being treated as errors
libpolycrypto/src/CMakeFiles/polycrypto.dir/build.make:75: recipe for target 'libpolycrypto/src/CMakeFiles/polycrypto.dir/PolyCrypto.cpp.o' failed
make[2]: *** [libpolycrypto/src/CMakeFiles/polycrypto.dir/PolyCrypto.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
CMakeFiles/Makefile2:120: recipe for target 'libpolycrypto/src/CMakeFiles/polycrypto.dir/all' failed
make[1]: *** [libpolycrypto/src/CMakeFiles/polycrypto.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2