/* Callbacks */
int cbtls_password(char *buf, int num, int rwflag, void *userdata);
void cbtls_info(const SSL *s, int where, int ret);
-int cbtls_verify(int ok, X509_STORE_CTX *ctx);
void cbtls_msg(int write_p, int msg_version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
RSA *cbtls_rsa(SSL *s, int is_export, int keylength);