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SSL_add_client_CA(3) - SSL_CTX_add_client_CA, SSL_CTX_set_client_CA_list, SSL_add_client_CA, SSL_set_client_CA_list - set list of CAs sent to the client when requesting a client certificate - man 3 SSL_add_client_CA

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SSL_CTX_set_client_CA_list(3)       OpenSSL      SSL_CTX_set_client_CA_list(3)



NAME
       SSL_CTX_set_client_CA_list, SSL_set_client_CA_list,
       SSL_CTX_add_client_CA, SSL_add_client_CA - set(7,n,1 builtins) list of CAs sent to the
       client when requesting a client certificate

SYNOPSIS
        #include <openssl/ssl.h>

        void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *list);
        void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *list);
        int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *cacert);
        int SSL_add_client_CA(SSL *ssl, X509 *cacert);

DESCRIPTION
       SSL_CTX_set_client_CA_list() sets the list of CAs sent to the client
       when requesting a client certificate for ctx.

       SSL_set_client_CA_list() sets the list of CAs sent to the client when
       requesting a client certificate for the chosen ssl, overriding the set-
       ting valid for ssl's SSL_CTX object.

       SSL_CTX_add_client_CA() adds the CA name extracted from cacert to the
       list of CAs sent to the client when requesting a client certificate for
       ctx.

       SSL_add_client_CA() adds the CA name extracted from cacert to the list
       of CAs sent to the client when requesting a client certificate for the
       chosen ssl, overriding the setting valid for ssl's SSL_CTX object.

NOTES
       When a TLS/SSL server requests a client certificate (see
       SSL_CTX_set_verify_options()), it sends a list of CAs, for which it
       will accept(2,8) certificates, to the client.

       This list must explicitly be set(7,n,1 builtins) using SSL_CTX_set_client_CA_list() for
       ctx and SSL_set_client_CA_list() for the specific ssl. The list speci-
       fied overrides the previous setting. The CAs listed do not become
       trusted (list only contains the names, not the complete certificates);
       use SSL_CTX_load_verify_locations(3) to additionally load(7,n) them for ver-
       ification.

       If the list of acceptable CAs is compiled in(1,8) a file(1,n), the
       SSL_load_client_CA_file(3) function can be used to help importing the
       necessary data.

       SSL_CTX_add_client_CA() and SSL_add_client_CA() can be used to add
       additional items the list of client CAs. If no list was specified
       before using SSL_CTX_set_client_CA_list() or SSL_set_client_CA_list(),
       a new client CA list for ctx or ssl (as appropriate) is opened.

       These functions are only useful for TLS/SSL servers.

RETURN VALUES
       SSL_CTX_set_client_CA_list() and SSL_set_client_CA_list() do not return
       diagnostic information.

       SSL_CTX_add_client_CA() and SSL_add_client_CA() have the following
       return values:

       1   The operation succeeded.

       0   A failure while manipulating the STACK_OF(X509_NAME) object
           occurred or the X509_NAME could not be extracted from cacert. Check
           the error(8,n) stack to find out the reason.

EXAMPLES
       Scan all certificates in(1,8) CAfile and list them as acceptable CAs:

         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));

SEE ALSO
       ssl(3), SSL_get_client_CA_list(3), SSL_load_client_CA_file(3),
       SSL_CTX_load_verify_locations(3)



0.9.7d                            2001-04-12     SSL_CTX_set_client_CA_list(3)

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