./cs512/c++/cppdef/dsa.cpp:175: error: no matching function for callto

Discussion in 'C++' started by cablepuff@gmail.com, Jan 16, 2008.

  1. Guest

    Hi I have the following error.
    ../cs512/c++/cppdef/dsa.cpp:175: error: no matching function for call
    to 'str_to_numlist(std::back_insert_iterator<std::vector<BigInteger,
    std::allocator<BigInteger> > >, const std::basic_string<char,
    std::char_traits<char>, std::allocator<char> >&, const BigInteger&)'

    Here is the codes

    /****************************************************
    * w = (s') ^ -1 mod q *
    * u1 = [H(M')w] mod q *
    * u2 = (r')w mod q *
    * v = [g^u1*y^u2)mod p] mod q *
    ****************************************************/
    template <class ContainerType>
    bool encryptcpw::dsa<ContainerType>::verifying(
    typename ContainerType::const_reference y,
    typename ContainerType::const_reference rp,
    typename ContainerType::const_reference sp,
    const std::string& Mp)
    {
    typedef typename ContainerType::value_type T;
    const T digits(std::numeric_limits<T>::digits);
    ContainerType myHashTbl;
    encryptcpw::str_to_numlist(std::back_inserter(myHashTbl), Mp,
    digits); // error here.
    T HM(encryptcpw::MyHash(myHashTbl.begin(), myHashTbl.end(),
    digits));
    const T w(algocpw::improve_pow(sp, -1)%q);
    const T u1((HM*w)%q);
    const T u2(rp*w % q);
    const T v(
    ((algocpw::improve_pow(g, u1) * algocpw::improve_pow(y, u2) )
    % p ) % q);
    return v == rp;
    }

    // inside StringConversion.hpp
    namespace encryptcpw
    {
    /**************************************************************
    * name: str_to_numlist *
    * purpose: converts a string into sequence of list *
    * @param s the string to convert. *
    * @param bound the bound of elements with bound >= 256. *
    * @return a list of integer *
    ***************************************************************/
    template <typename OutputIterator>
    OutputIterator str_to_numlist(OutputIterator OutIt, const
    std::string& s, typename OutputIterator::value_type bound);
    }

    // inside StringConversiondef.hpp
    template <typename OutputIterator>
    OutputIterator encryptcpw::str_to_numlist(OutputIterator OutIt, const
    std::string& s, typename OutputIterator::value_type bound)
    {
    //...
    }
    What is wrong?
    , Jan 16, 2008
    #1
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  2. Re: ./cs512/c++/cppdef/dsa.cpp:175: error: no matching function for call to

    wrote:
    > Hi I have the following error.
    > ./cs512/c++/cppdef/dsa.cpp:175: error: no matching function for call
    > to 'str_to_numlist(std::back_insert_iterator<std::vector<BigInteger,
    > std::allocator<BigInteger> > >, const std::basic_string<char,
    > std::char_traits<char>, std::allocator<char> >&, const BigInteger&)'


    Are you sure that the 'value_type' type of 'back_insert_iterator'
    is the same as 'BigInteger'?

    > [..]
    > // inside StringConversiondef.hpp
    > template <typename OutputIterator>
    > OutputIterator encryptcpw::str_to_numlist(OutputIterator OutIt, const
    > std::string& s, typename OutputIterator::value_type bound)
    > {
    > //...
    > }
    > What is wrong?


    Not sure. Can you distill it to a simple sample without all the
    namespaces and BigIntegers?

    V
    --
    Please remove capital 'A's when replying by e-mail
    I do not respond to top-posted replies, please don't ask
    Victor Bazarov, Jan 16, 2008
    #2
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