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.\" ========================================================================
.\"
.IX Title "CTLOG_NEW 3"
.TH CTLOG_NEW 3 "2020-04-21" "1.1.1g" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "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
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #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);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBCTLOG_new()\fR returns a new \s-1CTLOG\s0 that represents the Certificate Transparency
(\s-1CT\s0) 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.
.PP
\&\fBCTLOG_new_from_base64()\fR also creates a new \s-1CTLOG,\s0 but takes the public key in
base64\-encoded \s-1DER\s0 form and sets the ct_log pointer to point to the new \s-1CTLOG.\s0
The base64 will be decoded and the public key parsed.
.PP
Regardless of whether \fBCTLOG_new()\fR or \fBCTLOG_new_from_base64()\fR is used, it is the
caller's responsibility to pass the \s-1CTLOG\s0 to \fBCTLOG_free()\fR once it is no longer
needed. This will delete it and, if created by \fBCTLOG_new()\fR, the \s-1EVP_PKEY\s0 that
was passed to it.
.PP
\&\fBCTLOG_get0_name()\fR returns the name of the log, as provided when the \s-1CTLOG\s0 was
created. Ownership of the string remains with the \s-1CTLOG.\s0
.PP
\&\fBCTLOG_get0_log_id()\fR sets *log_id to point to a string containing that log's
LogID (see \s-1RFC 6962\s0). It sets *log_id_len to the length of that LogID. For a
v1 \s-1CT\s0 log, the LogID will be a \s-1SHA\-256\s0 hash (i.e. 32 bytes long). Ownership of
the string remains with the \s-1CTLOG.\s0
.PP
\&\fBCTLOG_get0_public_key()\fR returns the public key of the \s-1CT\s0 log. Ownership of the
\&\s-1EVP_PKEY\s0 remains with the \s-1CTLOG.\s0
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBCTLOG_new()\fR will return \s-1NULL\s0 if an error occurs.
.PP
\&\fBCTLOG_new_from_base64()\fR will return 1 on success, 0 otherwise.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBct\fR\|(7)
.SH "HISTORY"
.IX Header "HISTORY"
These functions were added in OpenSSL 1.1.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.