X509_CINF_NEW(3)

📦 version 4.4.0, in alpine 3.24, arch rolling

🌸 NAME 🌸

okay so bestie, welcome to X509_CINF_NEW(3) from the Library Functions Manual 💅 this is the page for X509_CINF_new, X509_CINF_free, X509_VAL_new, X509_VAL_free, X509_CERT_AUX_new, and X509_CERT_AUX_free — literally the X.509 certificate information objects squad 🎀

✨ SYNOPSIS ✨

library “libcrypto” #include <openssl/x509.h>

X509_CINF *
X509_CINF_new(void);

void
X509_CINF_free(X509_CINF *inf);

X509_VAL *
X509_VAL_new(void);

void
X509_VAL_free(X509_VAL *val);

X509_CERT_AUX *
X509_CERT_AUX_new(void);

void
X509_CERT_AUX_free(X509_CERT_AUX *aux);

💖 DESCRIPTION 💖

X509_CINF_new() allocates and initializes an empty X509_CINF object — representing an ASN.1 TBSCertificate structure defined in RFC 5280 section 4.1 🦋 it is used inside the X509 object and holds the main information contained in the X.509 certificate including subject, public key, issuer, serial number, validity period, and extensions. X509_CINF_free() frees inf.

X509_VAL_new() allocates and initializes an empty X509_VAL object — representing an ASN.1 Validity structure defined in RFC 5280 section 4.1 ✨ it is used inside the X509_CINF object and holds the validity period of the certificate. X509_VAL_free() frees val.

X509_CERT_AUX_new() allocates and initializes an empty X509_CERT_AUX structure 🎀 it can be used inside an X509 object to hold optional non-standard auxiliary data appended to a certificate, for example friendly alias names and trust data. X509_CERT_AUX_free() frees aux.

🫶 RETURN VALUES 🫶

X509_CINF_new(), X509_VAL_new(), and X509_CERT_AUX_new() return the new X509_CINF, X509_VAL, or X509_CERT_AUX object, respectively, or NULL if an error occurs 😭

no cap: if it goes wrong, the answer is NULL.

🔥 SEE ALSO 🔥

🌈 STANDARDS 🌈

RFC 5280: Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile

👑 HISTORY 👑

X509_CINF_new(), X509_CINF_free(), X509_VAL_new(), and X509_VAL_free() appeared in SSLeay 0.4 or earlier and have been available since OpenBSD 2.4 ⭐

X509_CERT_AUX_new() and X509_CERT_AUX_free() first appeared in OpenSSL 0.9.5 and have been available since OpenBSD 2.7 💜

mwah 💋 that’s the whole page, bestie. source/version shoutout: Debian, dated June 8, 2025 — footer icon X509_CINF_NEW(3) forever. bye 🫶✨

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