Error Testing Integer Operation on 8.2

[Benyamin Limanto]

Hello I tried to run the test operation on VS 2017 and got error

Testing Integer operations...

Assertion failed: d:\users\ben\my desktop\crypto\cryptopp\integer.cpp(4408): CryptoPP::a_times_b_mod_c

Any idea why?

It's on CRYPTOPP_ASSERT(m.NotZero()); line. and I'm new to crypto++. I also tried sing msys2 and it fail also when run this code on the sample

Reffer to https://www.cryptopp.com/wiki/SHA.

This is the code

#include "cryptopp/cryptlib.h"

#include "cryptopp/sha.h"

#include <iostream>

int main (int argc, char* argv[])

{

    using namespace CryptoPP;

    SHA1 hash;  

    std::cout << "Name: " << hash.AlgorithmName() << std::endl;

    std::cout << "Digest size: " << hash.DigestSize() << std::endl;

    std::cout << "Block size: " << hash.BlockSize() << std::endl;

    return 0; 

}

Any Idea? Thank you

[Jeffrey Walton]

On Wednesday, July 1, 2020 at 12:29:20 AM UTC-4, Benyamin Limanto wrote:

Hello I tried to run the test operation on VS 2017 and got error

Testing Integer operations...

Assertion failed: d:\users\ben\my desktop\crypto\cryptopp\integer.cpp(4408): CryptoPP::a_times_b_mod_c

Any idea why?

It's on CRYPTOPP_ASSERT(m.NotZero()); line. and I'm new to crypto++. I also tried sing msys2 and it fail also when run this code on the sample

Reffer to https://www.cryptopp.com/wiki/SHA.

You are running cryptest.exe in a debug build. That's the reason assertions are present in general.

The reason for this particular assertion is https://github.com/weidai11/cryptopp/blob/master/validat2.cpp#L1150, and the mod 0 tests. The library will throw an Integer::DivideByZero exception, and that's what is being tested.

The assertion that proceeds the throw is intended to help you debug your program. It will be present in our test program and your real programs because of the debug build.

The assertion will not fire in the sample program you provided.

Jeff