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NAME

       CTLOG_new, CTLOG_new_from_base64, CTLOG_free, CTLOG_get0_name, CTLOG_get0_log_id,
       CTLOG_get0_public_key - encapsulates information about a Certificate Transparency log

SYNOPSIS

        #include <openssl/ct.h>

        CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name);
        int CTLOG_new_from_base64(CTLOG ** ct_log,
                                  const char *pkey_base64, const char *name);
        void CTLOG_free(CTLOG *log);
        const char *CTLOG_get0_name(const CTLOG *log);
        void CTLOG_get0_log_id(const CTLOG *log, const uint8_t **log_id,
                               size_t *log_id_len);
        EVP_PKEY *CTLOG_get0_public_key(const CTLOG *log);

DESCRIPTION

       CTLOG_new() returns a new CTLOG that represents the Certificate Transparency (CT) log with
       the given public key. A name must also be provided that can be used to help users identify
       this log. Ownership of the public key is transferred.

       CTLOG_new_from_base64() also creates a new CTLOG, but takes the public key in
       base64-encoded DER form and sets the ct_log pointer to point to the new CTLOG.  The base64
       will be decoded and the public key parsed.

       Regardless of whether CTLOG_new() or CTLOG_new_from_base64() is used, it is the caller's
       responsibility to pass the CTLOG to CTLOG_free() once it is no longer needed. This will
       delete it and, if created by CTLOG_new(), the EVP_PKEY that was passed to it.

       CTLOG_get0_name() returns the name of the log, as provided when the CTLOG was created.
       Ownership of the string remains with the CTLOG.

       CTLOG_get0_log_id() sets *log_id to point to a string containing that log's LogID (see RFC
       6962). It sets *log_id_len to the length of that LogID. For a v1 CT log, the LogID will be
       a SHA-256 hash (i.e. 32 bytes long). Ownership of the string remains with the CTLOG.

       CTLOG_get0_public_key() returns the public key of the CT log. Ownership of the EVP_PKEY
       remains with the CTLOG.

RETURN VALUES

       CTLOG_new() will return NULL if an error occurs.

       CTLOG_new_from_base64() will return 1 on success, 0 otherwise.

SEE ALSO

       ct(7)

HISTORY

       These functions were added in OpenSSL 1.1.0.

COPYRIGHT

       Copyright 2016 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>.