OSSL_STORE-WINSTORE(7SSL) OpenSSL OSSL_STORE-WINSTORE(7SSL)
NAME
OSSL_STORE-winstore - OpenSSL built in OSSL_STORE for Windows
DESCRIPTION
The OSSL_STORE implementation for Windows provides access to Windows'
system "ROOT" certificate store through URIs, using the URI scheme
"org.openssl.winstore".
Supported URIs
There is only one supported URI:
org.openssl.winstore:
No authority (host, etc), no path, no query, no fragment.
Supported OSSL_STORE_SEARCH operations
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.
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:
• The documented capability to override EKU
• The undocumented capability to add name constraints
• The undocumented capability to override the certificate expiry date
Such constraints are not checked by this OSSL_STORE implementation, and
thereby not honoured.
However, once extracted with 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.
SEE ALSO
ossl_store(7), OSSL_STORE_open_ex(3), OSSL_STORE_SEARCH(3)
HISTORY
The winstore ("org.openssl.winstore") implementation was added in
OpenSSL 3.2.0.
NOTES
OpenSSL uses OSSL_DECODER(3) implementations under the hood. To
influence what OSSL_DECODER(3) implementations are used, it's advisable
to use OSSL_STORE_open_ex(3) and set the propq argument.
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
<https://www.openssl.org/source/license.html>.
3.5.4 2025-09-30 OSSL_STORE-WINSTORE(7SSL)
Generated by dwww version 1.16 on Tue Dec 16 04:20:11 CET 2025.