unsigned char *(*private_blob)(void *key, 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);
char *(*fingerprint)(void *key);
int (*verifysig)(void *key, char *sig, int siglen,
char *data, int datalen);