X509_STORE_CTX_get_current_cert
err_cert = X509_STORE_CTX_get_current_cert(ctx);
X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
err_cert = X509_STORE_CTX_get_current_cert(ctx);
X509 * X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
if ((crt = X509_STORE_CTX_get_current_cert(ctx)) != NULL &&