void *(*createkey)(unsigned char *pub_blob, int pub_len,
unsigned char *priv_blob, int priv_len);
void *(*openssh_createkey)(unsigned char **blob, int *len);
void *(*createkey)(unsigned char *pub_blob, int pub_len,
unsigned char *priv_blob, int priv_len);
void *(*openssh_createkey)(unsigned char **blob, int *len);