=pod

=head1 NAME

OSSL_STORE-winstore - OpenSSL built in OSSL_STORE for Windows

=head1 DESCRIPTION

The OSSL_STORE implementation for Windows provides access to Windows' system
C<ROOT> certificate store through URIs, using the URI scheme
C<org.openssl.winstore>.

=head2 Supported URIs

There is only one supported URI:

  org.openssl.winstore:

No authority (host, etc), no path, no query, no fragment.

=head2 Supported OSSL_STORE_SEARCH operations

=over 4

=item L<OSSL_STORE_SEARCH_by_name(3)>

As a matter of fact, this must be used.  It is not possible to enumerate all
available certificates in the store.

=back

=head2 Windows certificate store features

Apart from diverse constraints present in the certificates themselves, the
Windows certificate store also has the ability to associate additional
constraining properties alongside a certificate in the store. This includes
both documented and undocumented capabilities:

=over 4

=item *

The documented capability to override EKU

=item *

The undocumented capability to add name constraints

=item *

The undocumented capability to override the certificate expiry date

=back

I<Such constraints are not checked by this OSSL_STORE implementation, and
thereby not honoured>.

However, once extracted with L<OSSL_STORE_load(3)>, certificates that have
constraints in their X.509 extensions will go through the usual constraint
checks when used by OpenSSL, and are thereby honoured.

=head1 SEE ALSO

L<ossl_store(7)>, L<OSSL_STORE_open_ex(3)>, L<OSSL_STORE_SEARCH(3)>

=head1 HISTORY

The winstore (C<org.openssl.winstore>) implementation was added in OpenSSL
3.2.0.

=head1 NOTES

OpenSSL uses L<OSSL_DECODER(3)> implementations under the hood.
To influence what L<OSSL_DECODER(3)> implementations are used, it's advisable
to use L<OSSL_STORE_open_ex(3)> and set the I<propq> argument.

=head1 COPYRIGHT

Copyright 2024 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
L<https://www.openssl.org/source/license.html>.

=cut