- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- SEE ALSO
- HISTORY

# NAME

X509_new, X509_free - X509 certificate ASN1 allocation functions

# SYNOPSIS

     #include <openssl/x509.h>

     X509 *X509_new(void);
     void X509_free(X509 *a);

# DESCRIPTION

The X509 ASN1 allocation routines, allocate and free an X509 structure, which represents an X509 certificate.

`X509_new()` allocates and initializes a X509 structure.

`X509_free()` frees up the X509 structure a.

# RETURN VALUES

If the allocation fails, `X509_new()` returns NULL and sets an error code that can be obtained by ERR_get_error. Otherwise it returns a pointer to the newly allocated structure.

`X509_free()` returns no value.

# SEE ALSO

ERR_get_error, d2i_X509

# HISTORY

`X509_new()` and `X509_free()` are available in all versions of SSLeay and OpenSSL.