CTLOG_STORE_new_ex, CTLOG_STORE_new, CTLOG_STORE_free, CTLOG_STORE_load_default_file,

       Copyright 2016-2024 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use this file except in compliance
       with the License.  You can obtain a copy in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.

3.5.0                                              2025-06-04                              CTLOG_STORE_NEW(3SSL)

       A CTLOG_STORE is a container for a list of CTLOGs (Certificate Transparency logs). The list can be loaded
       from one or more files and then searched by LogID (see RFC 6962, Section 3.2, for the definition of a
       LogID).

       CTLOG_STORE_new_ex() creates an empty list of CT logs associated with the library context libctx and the
       property query string propq.

       CTLOG_STORE_new() does the same thing as CTLOG_STORE_new_ex() but with the default library context and
       property query string.

       The CTLOG_STORE is then populated by CTLOG_STORE_load_default_file() or CTLOG_STORE_load_file().
       CTLOG_STORE_load_default_file() loads from the default file, which is named ct_log_list.cnf in OPENSSLDIR
       (see the output of openssl-version(1)). This can be overridden using an environment variable named
       CTLOG_FILE. CTLOG_STORE_load_file() loads from a caller-specified file path instead. Both of these
       functions append any loaded CT logs to the CTLOG_STORE.

       The expected format of the file is:

        enabled_logs=foo,bar

        [foo]
        description = Log 1
        key = <base64-encoded DER SubjectPublicKeyInfo here>

        [bar]
        description = Log 2
        key = <base64-encoded DER SubjectPublicKeyInfo here>

       Once a CTLOG_STORE is no longer required, it should be passed to CTLOG_STORE_free(). This will delete all
       of the CTLOGs stored within, along with the CTLOG_STORE itself. If the argument is NULL, nothing is done.

       CTLOG_STORE_new_ex was added in OpenSSL 3.0. All other functions were added in OpenSSL 1.1.0.

       CTLOG_STORE_new_ex, CTLOG_STORE_new, CTLOG_STORE_free, CTLOG_STORE_load_default_file,
       CTLOG_STORE_load_file - Create and populate a Certificate Transparency log list

       If there are any invalid CT logs in a file, they are skipped and the remaining valid logs will still be
       added to the CTLOG_STORE. A CT log will be considered invalid if it is missing a "key" or "description"
       field.

       Both CTLOG_STORE_load_default_file and CTLOG_STORE_load_file return 1 if all CT logs in the file are
       successfully parsed and loaded, 0 otherwise.

ct(7), CTLOG_STORE_get0_log_by_id(3), SSL_CTX_set_ctlog_list_file(3)

        #include <openssl/ct.h>

        CTLOG_STORE *CTLOG_STORE_new_ex(OSSL_LIB_CTX *libctx, const char *propq);
        CTLOG_STORE *CTLOG_STORE_new(void);
        void CTLOG_STORE_free(CTLOG_STORE *store);

        int CTLOG_STORE_load_default_file(CTLOG_STORE *store);
        int CTLOG_STORE_load_file(CTLOG_STORE *store, const char *file);