Android_verify/third_party/android-libs/share/man/man3/CTLOG_new.3ossl

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.\" ========================================================================
.\"
.IX Title "CTLOG_NEW 3ossl"
.TH CTLOG_NEW 3ossl "2024-09-03" "3.3.2" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "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
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #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);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBCTLOG_new_ex()\fR returns a new \s-1CTLOG\s0 that represents the Certificate
Transparency (\s-1CT\s0) log with the given public key and associates it with the
library context \fIlibctx\fR and property query string \fIpropq\fR. 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()\fR does the same thing as \fBCTLOG_new_ex()\fR but with the default
library context and the default property query string.
.PP
\&\fBCTLOG_new_from_base64_ex()\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. The \s-1CTLOG\s0
will be associated with the given library context \fIlibctx\fR and property query
string \fIpropq\fR.
.PP
\&\fBCTLOG_new_from_base64()\fR does the same thing as
\&\fBCTLOG_new_from_base64_ex()\fR except that the default library context and
property query string are used.
.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. If the argument to \fBCTLOG_free()\fR is \s-1NULL,\s0 nothing is done.
.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"
The functions \fBCTLOG_new_ex()\fR and \fBCTLOG_new_from_base64_ex()\fR
were added in OpenSSL 3.0. All other functions were added in OpenSSL 1.1.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2016\-2024 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (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>.