package chat import ( "crypto/ecdsa" dr "github.com/status-im/doubleratchet" ) // RatchetInfo holds the current ratchet state type RatchetInfo struct { ID []byte Sk []byte PrivateKey []byte PublicKey []byte Identity []byte BundleID []byte EphemeralKey []byte InstallationID string } // PersistenceService defines the interface for a storage service type PersistenceService interface { // GetKeysStorage returns the associated double ratchet KeysStorage object GetKeysStorage() dr.KeysStorage // GetSessionStorage returns the associated double ratchet SessionStorage object GetSessionStorage() dr.SessionStorage // GetPublicBundle retrieves an existing Bundle for the specified public key GetPublicBundle(*ecdsa.PublicKey) (*Bundle, error) // AddPublicBundle persists a specified Bundle AddPublicBundle(*Bundle) error // GetAnyPrivateBundle retrieves any bundle containing a private key GetAnyPrivateBundle([]byte) (*BundleContainer, error) // GetPrivateKeyBundle retrieves a BundleContainer with the specified signed prekey GetPrivateKeyBundle([]byte) ([]byte, error) // AddPrivateBundle persists a BundleContainer AddPrivateBundle(*BundleContainer) error // MarkBundleExpired marks a bundle as expired, not to be used for encryption anymore MarkBundleExpired([]byte) error // AddRatchetInfo persists the specified ratchet info AddRatchetInfo([]byte, []byte, []byte, []byte, string) error // GetRatchetInfo retrieves the existing RatchetInfo for a specified bundle ID and interlocutor public key GetRatchetInfo([]byte, []byte, string) (*RatchetInfo, error) // GetAnyRatchetInfo retrieves any existing RatchetInfo for a specified interlocutor public key GetAnyRatchetInfo([]byte, string) (*RatchetInfo, error) // RatchetInfoConfirmed clears the ephemeral key in the RatchetInfo // associated with the specified bundle ID and interlocutor identity public key RatchetInfoConfirmed([]byte, []byte, string) error }