signature.hpp

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#ifndef JOIN_CRYPTO_SIGNATURE_HPP
#define JOIN_CRYPTO_SIGNATURE_HPP
 
// libjoin.
#include <join/digest.hpp>
 
// C++.
#include <system_error>
#include <future>
 
namespace join
{
    class Signaturebuf : public Digestbuf
    {
    public:
        Signaturebuf (const std::string& algo);
 
        Signaturebuf (const Signaturebuf& other) = delete;
 
        Signaturebuf& operator= (const Signaturebuf& other) = delete;
 
        Signaturebuf (Signaturebuf&& other) = default;
 
        Signaturebuf& operator= (Signaturebuf&& other) = default;
 
        virtual ~Signaturebuf () = default;
 
        BytesArray sign (const std::string& privKey);
 
        bool verify (const BytesArray& sig, const std::string& pubKey);
    };
 
    class Signature : public std::ostream
    {
    public:
        Signature (Digest::Algorithm algo);
 
        Signature (const Signature& other) = delete;
 
        Signature& operator= (const Signature& other) = delete;
 
        Signature (Signature&& other);
 
        Signature& operator= (Signature&& other);
 
        virtual ~Signature () = default;
 
        BytesArray sign (const std::string& privKey);
 
        static BytesArray sign (const char* data, std::streamsize size, const std::string& privKey,
                                Digest::Algorithm algo);
 
        static BytesArray sign (const BytesArray& data, const std::string& privKey, Digest::Algorithm algo);
 
        static BytesArray sign (const std::string& data, const std::string& privKey, Digest::Algorithm algo);
 
        bool verify (const BytesArray& signature, const std::string& pubKey);
 
        static bool verify (const char* data, std::streamsize size, const BytesArray& signature,
                            const std::string& pubKey, Digest::Algorithm algo);
 
        static bool verify (const BytesArray& data, const BytesArray& signature, const std::string& pubKey,
                            Digest::Algorithm algo);
 
        static bool verify (const std::string& data, const BytesArray& signature, const std::string& pubKey,
                            Digest::Algorithm algo);
 
    private:
        Signaturebuf _sigbuf;
    };
}
 
#endif