HP OpenVMS Systems Documentation

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HP Open Source Security for OpenVMS Volume 2: HP SSL for OpenVMS > SSL Application Programming Interface (API) Reference

SSL_load_client_CA_file

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NAME

SSL_load_client_CA_file — load certificate names from file

Synopsis

#include <openssl/ssl.h> 
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);

DESCRIPTION

SSL_load_client_CA_file() reads certificates from file and returns a STACK_OF(X509_NAME) with the subject names found.

NOTES

SSL_load_client_CA_file() reads a file of PEM formatted certificates and extracts the X509_NAMES of the certificates found. While the name suggests the specific usage as support function for SSL_CTX_set_client_CA_list(3), it is not limited to CA certificates.

EXAMPLES

Load names of CAs from file and use it as a client CA list:

 SSL_CTX *ctx;
STACK_OF(X509_NAME) *cert_names;

...
cert_names = SSL_load_client_CA_file("/path/to/CAfile.pem");
if (cert_names != NULL)
SSL_CTX_set_client_CA_list(ctx, cert_names);
else
error_handling();
...

RETURN VALUES

The following return values can occur:

  • NULL

    The operation failed, check out the error stack for the reason.

  • Pointer to STACK_OF(X509_NAME)

    Pointer to the subject names of the successfully read certificates.

SEE ALSO

ssl(3), SSL_CTX_set_client_CA_list(3)