C++ Easy To Use SHA1 Function Based On Boost

gistfile1.txt

std::string sha1(const std::string& str)
    {
    using boost::uuids::detail::sha1;

    sha1 sha;
    sha.process_bytes(str.data(), str.size());
    unsigned hash[5] = {0};
    sha.get_digest(hash);
    
    // back to string
    char buf[41] = {0};
    for (int i = 0; i < 5; ++i) std::sprintf(buf + (i << 3), "%08x", hash[i]);
    return buf;
    }