int Crypto_RetrieveLocalKey(int keyid, char *keyfp, size_t keyfplen, char *idfp, size_t idfplen, qboolean *issigned); // return value: -1 if more to come, +1 if valid, 0 if end of list
size_t Crypto_SignData(const void *data, size_t datasize, int keyid, void *signed_data, size_t signed_size);
int Crypto_RetrieveLocalKey(int keyid, char *keyfp, size_t keyfplen, char *idfp, size_t idfplen, qboolean *issigned); // return value: -1 if more to come, +1 if valid, 0 if end of list
size_t Crypto_SignData(const void *data, size_t datasize, int keyid, void *signed_data, size_t signed_size);