Hello, OpenSSL version: 1.1.1k. I noticed that X509 *d2i_X509(X509 **px, const unsigned char **in, long len); function is no longer defined in openssl/x509.h available in 1.0.x versions, the only one available is now X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length); Do I understand correctly that I should rewrite corresponding code of my application so that it would only use d2i_X509_AUX ? Note: d2i_X509() is still mentioned in https://www.openssl.org/docs/man1.1.1/man3/d2i_X509.html -- Sincerely, Konstantin Boyandin