1=pod 2 3=head1 NAME 4 5ct - Certificate Transparency 6 7=head1 SYNOPSIS 8 9 #include <openssl/ct.h> 10 11=head1 DESCRIPTION 12 13This library implements Certificate Transparency (CT) verification for TLS 14clients, as defined in RFC 6962. This verification can provide some confidence 15that a certificate has been publicly logged in a set of CT logs. 16 17By default, these checks are disabled. They can be enabled using 18L<SSL_CTX_enable_ct(3)> or L<SSL_enable_ct(3)>. 19 20This library can also be used to parse and examine CT data structures, such as 21Signed Certificate Timestamps (SCTs), or to read a list of CT logs. There are 22functions for: 23- decoding and encoding SCTs in DER and TLS wire format. 24- printing SCTs. 25- verifying the authenticity of SCTs. 26- loading a CT log list from a CONF file. 27 28=head1 SEE ALSO 29 30L<d2i_SCT_LIST(3)>, 31L<CTLOG_STORE_new(3)>, 32L<CTLOG_STORE_get0_log_by_id(3)>, 33L<SCT_new(3)>, 34L<SCT_print(3)>, 35L<SCT_validate(3)>, 36L<SCT_validate(3)>, 37L<CT_POLICY_EVAL_CTX_new(3)>, 38L<SSL_CTX_set_ct_validation_callback(3)> 39 40=head1 HISTORY 41 42The ct library was added in OpenSSL 1.1.0. 43 44=head1 COPYRIGHT 45 46Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved. 47 48Licensed under the Apache License 2.0 (the "License"). You may not use 49this file except in compliance with the License. You can obtain a copy 50in the file LICENSE in the source distribution or at 51L<https://www.openssl.org/source/license.html>. 52 53=cut 54