internal static extern int indy_decrypt_sealed(int command_handle, IntPtr wallet_handle, string did, byte[] encrypted_msg_raw, int encrypted_msg_len, DecryptCompletedDelegate cb);
internal static extern int indy_decrypt(int command_handle, IntPtr wallet_handle, IntPtr pool_handle, string my_did, string did, byte[] encrypted_msg_raw, int encrypted_msg_len, byte[] nonce_raw, int nonce_len, DecryptCompletedDelegate cb);