ct.7ssl(7)
SECCIÓN: 7 - Miscelánea
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 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>.
3.0.17 2025-09-26 CT(7SSL)
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