ct

CT(7SSL)                            OpenSSL                           CT(7SSL)

NAME
       ct - Certificate Transparency

SYNOPSIS
        #include <openssl/ct.h>

DESCRIPTION
       This library implements Certificate Transparency (CT) verification for
       TLS clients, as defined in RFC 6962. This verification can provide some
       confidence that a certificate has been publicly logged in a set of CT
       logs.

       By default, these checks are disabled. They can be enabled using
       SSL_CTX_enable_ct(3) or SSL_enable_ct(3).

       This library can also be used to parse and examine CT data structures,
       such as Signed Certificate Timestamps (SCTs), or to read a list of CT
       logs. There are functions for: - decoding and encoding SCTs in DER and
       TLS wire format.  - printing SCTs.  - verifying the authenticity of
       SCTs.  - loading a CT log list from a CONF file.

SEE ALSO
       d2i_SCT_LIST(3), CTLOG_STORE_new(3), CTLOG_STORE_get0_log_by_id(3),
       SCT_new(3), SCT_print(3), SCT_validate(3), SCT_validate(3),
       CT_POLICY_EVAL_CTX_new(3), SSL_CTX_set_ct_validation_callback(3)

HISTORY
       The ct library was added in OpenSSL 1.1.0.

COPYRIGHT
       Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (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>.

1.1.1f                            2023-10-10                          CT(7SSL)