get_fingerprint
get_fingerprint(cert, &fp, NULL);
if (!get_fingerprint(cert, &certfingerprint, alg)) {
&& get_fingerprint(cert1, &fp1, NULL)
&& get_fingerprint(cert2, &fp2, NULL)) {
(void)get_fingerprint(cur_cert, &cur_fingerprint, NULL);
bool get_fingerprint(const X509 *, char **, const char *);