.\"=============================================================================
.\" Header
.\"
.\" Copyright (c) 2018-2024 Michael Baeuerle
.\"
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.\"
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.\" the Software and that both the above copyright notice(s) and this
.\" permission notice appear in supporting documentation.
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.\" SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER
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.\" SPDX-License-Identifier: ICU
.\"
.\"
.TH $NAME 3 $DATE Unix "$NAME $VERSION manual"
.\"
.\"
.\"=============================================================================
.\" NAME section
.\"
.SH NAME
cl_split - Split Cancel-Key or Cancel-Lock with $NAME
.\"
.\"
.\"=============================================================================
.\" SYNOPSIS section
.\"
.SH SYNOPSIS
.nf
.B #include <libcanlock-3/canlock.h>
.sp
.BI "cl_hash_version cl_split(char *" input ", char **" klstring );
.fi
.sp
Possible return values (by version 3.0.0 of $NAME):
.br
CL_INVALID CL_SHA1 CL_SHA224 CL_SHA256 CL_SHA384 CL_SHA512
.\"
.\"
.\"=============================================================================
.\" DESCRIPTION section
.\"
.SH DESCRIPTION
The
.BR cl_split ()
function splits a <c-key> or <c-lock> element according to RFC 8315.
.sp
The hash algorithm for <scheme> is extracted and the corresponding ID is
returned. If the hash algorithm is not found or not supported, CL_INVALID
is returned.
.sp
A pointer to the <c-key-string> or <c-lock-string> element respectively is
written to
.I klstring
on success (points inside the string
.I input
and therefore no additional memory is allocated).
.br
NULL is written to
.I klstring
on error.
.\"
.\"
.\"=============================================================================
.\" RETURN VALUE section
.\"
.SH RETURN VALUE
Hash algorithm ID (CL_INVALID on error).
.\"
.\"
.\"=============================================================================
.\" AUTHORS section
.\"
.SH AUTHORS
Michael Baeuerle
.br
(Based in part on
.BR lock_strip_alpha()
written by G. J. Andruk for Version 2)
.\"
.\"
.\"=============================================================================
.\" REPORTING BUGS section
.\"
.SH REPORTING BUGS
Report bugs to <mailto:$BUGREPORT>.
.\"
.\"
.\"=============================================================================
.\" STANDARDS section
.\"
.SH STANDARDS
.B $NAME
tries to comply with the following standards:
.PP
RFC 5537, RFC 6234, RFC 8315
.\"
.\"
.\"=============================================================================
.\" SEE ALSO section
.\"
.SH SEE ALSO
.BR cl_clear_secret (3),
.BR cl_get_key (3),
.BR cl_get_lock (3),
.BR cl_verify (3),
.BR cl_verify_multi (3),
.BR canlock (1)
.\"
.\"
.\" EOF
