UBitcoinBackend.h

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#ifndef NOSTR_UBITCOIN_BACKEND_H
#define NOSTR_UBITCOIN_BACKEND_H
 
#include <stddef.h>
#include <stdint.h>
#include <functional>
 
namespace nostr {
namespace crypto {
 
class UBitcoinBackend {
  public:
    using RandomProvider = std::function<bool(uint8_t *, size_t)>;
 
    static bool initialize(const RandomProvider &randomProvider);
    static void shutdown();
    static bool isInitialized();
    static bool publicKey(const uint8_t privateKey[32], uint8_t xOnlyPublicKey[32]);
    static bool sign(const uint8_t privateKey[32], const uint8_t *message, size_t messageSize,
                     const uint8_t auxiliaryRandomness[32], uint8_t signature[64]);
    static bool verify(const uint8_t xOnlyPublicKey[32], const uint8_t *message, size_t messageSize,
                       const uint8_t signature[64]);
    static bool verifyRecoverableEcdsa(const uint8_t digest[32], const uint8_t signature[64],
                                       uint8_t recoveryId,
                                       const uint8_t compressedPublicKey[33] = nullptr);
    static bool ecdhRawX(const uint8_t privateKey[32], const uint8_t xOnlyPublicKey[32],
                         uint8_t sharedX[32]);
};
 
} // namespace crypto
} // namespace nostr
 
#endif