AsymmetricMessageDigest.h

#ifndef TENDUKE_LIBCRYPTO_ASYMMETRICMESSAGEDIGEST_H
#define TENDUKE_LIBCRYPTO_ASYMMETRICMESSAGEDIGEST_H
 
#include "crypto/MessageDigestVerifier.h"
 
#include "./LibcryptoPublicKey.h"
 
#include <memory>
#include <string>
 
#include <openssl/evp.h>
 
 
 
namespace tenduke { namespace crypto { namespace libcrypto {
 
 
class AsymmetricMessageDigest : public MessageDigestVerifier
{
public:
    AsymmetricMessageDigest(
            const std::string &algorithmName,
            const LibcryptoPublicKey * verificationKey
    );
    ~AsymmetricMessageDigest() override;
 
// tenduke::crypto::MessageDigestVerifier implementation
public:
    bool verify(
            const void *message,
            std::size_t messageLength,
            const void *signature,
            std::size_t signatureLength
    ) override;
 
private:
    const LibcryptoPublicKey * const verificationKey;
    const EVP_MD *digest;
    const std::unique_ptr<EVP_MD_CTX, decltype(EVP_MD_CTX_free) *> ctx;
};
 
 
}}}
 
#endif // TENDUKE_LIBCRYPTO_ASYMMETRICMESSAGEDIGEST_H