How to calculate hash of a string vector?

[Devharsh Trivedi]

I am trying to calculate SHA256 digest for entire string vector like this:

byte digest[SHA256::DIGESTSIZE];

SHA256().CalculateDigest(digest, (const byte*)stringVector.data(), stringVector.size());

What is the correct way to calculate hash of entire vector?

[Devharsh Trivedi]

I am using hash.Update to iterate over a vector to calculate the hash of the container. Is there a better way to do this?

std::string digest;

SHA256 hash;

for(auto str: stringVector) { 

hash.Update((const byte*)str.data(), str.size()); 

} 

digest.resize(hash.DigestSize()); 

hash.Final((byte*)&digest[0]);

[Jeffrey Walton]

https://www.cryptopp.com/wiki/SHA2

Jeff