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CTLOG_new(3)                        OpenSSL                       CTLOG_new(3)



NAME
       CTLOG_new_ex, CTLOG_new, CTLOG_new_from_base64,
       CTLOG_new_from_base64_ex, CTLOG_free, CTLOG_get0_name,
       CTLOG_get0_log_id, CTLOG_get0_public_key - encapsulates information
       about a Certificate Transparency log

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/ct.h>

        CTLOG *CTLOG_new_ex(EVP_PKEY *public_key, const char *name,
                            OSSL_LIB_CTX *libctx, const char *propq);
        CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name);

        int CTLOG_new_from_base64_ex(CTLOG **ct_log, const char *pkey_base64,
                                     const char *name, OSSL_LIB_CTX *libctx,
                                     const char *propq);
        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_ex() returns a new CTLOG that represents the Certificate
       Transparency (CT) log with the given public key and associates it with
       the library context libctx and property query string propq. 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() does the same thing as CTLOG_new_ex() but with the default
       library context and the default property query string.

       CTLOG_new_from_base64_ex() 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. The CTLOG will be associated with the given library context
       libctx and property query string propq.

       CTLOG_new_from_base64() does the same thing as
       CTLOG_new_from_base64_ex() except that the default library context and
       property query string are used.

       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
       The functions CTLOG_new_ex() and CTLOG_new_from_base64_ex() were added
       in OpenSSL 3.0. All other functions were added in OpenSSL 1.1.0.

COPYRIGHT
       Copyright 2016-2020 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>.



3.0.12                            2023-05-07                      CTLOG_new(3)