signature-verification-key.hpp

#pragma once
 
#include <cassert>
#include <sodium.h>
#include <vector>
#include <string>
 
#include "sodium-buffer.hpp"
 
class SignatureVerificationKey {
public:
  const std::vector<unsigned char> signatureVerificationKeyBytes;
  const std::string recipe;
 
  SignatureVerificationKey(
    const std::vector<unsigned char> &keyBytes,
    const std::string& recipe
  );
 
  static SignatureVerificationKey fromJson(
    const std::string& signatureVerificationKeyAsJson
  );
 
  const std::string toJson(
    int indent = -1,
    const char indent_char = ' '
  ) const;
 
private:
  static bool verify(
    const unsigned char* signatureVerificationKeyBytes,
    const unsigned char* message,
    const size_t messageLength,
    const unsigned char* signature
  );
 
public:
  static bool verify(
    const unsigned char* signatureVerificationKeyBytes,
    const size_t signatureVerificationKeyBytesLength,
    const unsigned char* message,
    const size_t messageLength,
    const unsigned char* signature,
    const size_t signatureLength
  );
 
  static bool verify(
    const std::vector<unsigned char>& signatureVerificationKeyBytes,
    const unsigned char* message,
    const size_t messageLength,
    const std::vector<unsigned char>& signature
  );
 
  bool verify(
    const unsigned char* message,
    const size_t messageLength,
    const std::vector<unsigned char>& signature
  ) const;
 
  bool verify(
    const std::vector<unsigned char>& message,
    const std::vector<unsigned char>& signature
  ) const;
 
  bool verify(
    const SodiumBuffer& message,
    const std::vector<unsigned char>& signature
  ) const;
 
  const std::vector<unsigned char> getKeyBytes() const;
 
  const std::string getKeyBytesAsHexDigits() const;
 
  const std::string getRecipeJson() const {
    return recipe; 
  }
 
  const SodiumBuffer toSerializedBinaryForm() const;
 
  static SignatureVerificationKey fromSerializedBinaryForm(const SodiumBuffer &serializedBinaryForm);
 
  const std::string toOpenSshPublicKey() const;
};