Decryptor/Decryptor/ECDSASignatureBox.cpp

#include "Openssl_crypto.h"

class ECDSASignatureBox : public ECDHKeypair {
public:
  void get_keypair(uint8_t* output_keypair);
  uint32_t sign(uint8_t* signature_data, uint32_t signature_data_length, uint8_t* signature)
  {
    return compute_ecdsa_signature(signature_data, signature_data_length, private_key, signature);
  }

  void get_keypair(uint8_t* output_keypair)
  {
    // TODO: What happens if the ECDH keypair's generate keypair hasnt been set.
    uint32_t counter;
    for(counter=0; counter<ECDH_PRIVATE_KEY_SIZE; counter++)
      *(output_keypair + counter) = *(private_key + counter);
    for(counter=0; counter<ECDH_PUBLIC_KEY_SIZE; counter++)
      *(output_keypair + counter) = *(public_key + counter);
  }

  void set_keypair(uint8_t* input_keypair)
  {
    uint32_t counter;
    for(counter=0; counter<ECDH_PRIVATE_KEY_SIZE; counter++)
      *(private_key + counter) = *(input_keypair + counter);
    for(counter=0; counter<ECDH_PUBLIC_KEY_SIZE; counter++)
      *(public_key + counter) = *(input_keypair + counter);
  }
}