Copyright Digital Equipment Corp. All rights reserved.
TP_CertGroupConstruct
NAME
TP_CertGroupConstruct,
CSSM_TP_CertGroupConstruct - Construct credential (CDSA)
SYNOPSIS
# include <cssm.h>
API:
CSSM_RETURN CSSMAPI CSSM_TP_CertGroupConstruct
(CSSM_TP_HANDLE TPHandle,
CSSM_CL_HANDLE CLHandle,
CSSM_CSP_HANDLE CSPHandle,
const CSSM_DL_DB_LIST *DBList,
const void *ConstructParams,
const CSSM_CERTGROUP *CertGroupFrag,
CSSM_CERTGROUP_PTR *CertGroup)
SPI:
CSSM_RETURN CSSMTPI TP_CertGroupConstruct
(CSSM_TP_HANDLE TPHandle,
CSSM_CL_HANDLE CLHandle,
CSSM_CSP_HANDLE CSPHandle,
const CSSM_DL_DB_LIST *DBList,
const void *ConstructParams,
const CSSM_CERTGROUP *CertGroupFrag,
CSSM_CERTGROUP_PTR *CertGroup)
LIBRARY
Common Security Services Manager library (CDSA$INCSSM300_SHR.EXE)
PARAMETERS
TPHandle (input)
The handle to the trust policy module to perform this
operation.
CLHandle (input/optional)
The handle to the certificate library module that can be used
to manipulate and parse values in stored in the certgroup
certificates. If no certificate library module is specified,
the TP module uses an assumed CL module.
CSPHandle (input./optional)
A handle specifying the Cryptographic Service Provider to be
used to verify certificates as the certificate group is
constructed. If the a CSP handle is not specified, the trust
policy module can assume a default CSP. If the module cannot
assume a default, or the default CSP is not available on the
local system, an error occurs.
DBList (input)
A list of handle pairs specifying a data storage library
module and a data store, identifying certificate databases
containing certificates (and possibly other security objects)
that are managed by that module. certificates (and possibly
other security objects). The data stores should be searched
to complete construction of a semantically-related certificate
group.
ConstructParams (input/optional)
A pointer to data that can be used by the add-in trust
policy module in constructing the CertGroup. The semantics
of this parameter are defined by the trust policy and the
credential model supported by that policy. The input
parameter can consist of a set of values, each guiding some
aspect of the construction process. Parameter values can:
· Limit the certificates that are added to the constructed
set.
· Identify other sources of certificates for inclusion in
the constructed set.
CertGroupFrag (input)
A list of certificates that form a possibly incomplete
set of certificates. The first certificate in the group
represents the target certificate for which a group of
semantically related certificates will be assembled.
Subsequent intermediate certificates can be supplied by
the caller. They need not be in any particular order.
CertGroup (output)
A pointer to a complete certificate group based on the
original subset of certificates and the certificate data
stores. The CSSM_CERTGROUP and its sub-structure is
allocated by the service provider and must be deallocated
by the application.
DESCRIPTION
This function builds a collection of certificates that together
make up a meaningful credential for a given trust domain. For
example, in a hierarchical trust domain, a certificate group is a
chain of certificates from an end entity to a top level certification
authority. The constructed certificate group format (such as
ordering) is implementation specific. However, the subject or
end-entity is always the first certificate in the group.
A partially constructed certificate group is specified in
CertGroupFrag. The first certificate is interpreted to be the
subject or end-entity certificate. Subsequent certificates in
the CertGroupFrag structure may be used during the construction
of a certificate group in conjunction with certificates found in
the data stores specified in DBList. The trust policy defines the
certificates that will be included in the resulting set.
The output set is a sequence of certificates ordered by the
relationship among them. The result set can be augmented by adding
semantically-related certificates obtained by searching the
certificate data stores specified in DBList. The data stores are
searched in order of appearance in DBList. If the TP supports a
hierarchical model of certificates, the function output is an
uninterrupted, ordered chain of certificates based on the first
certificate as the leaf of the certificate chain. If the certificate
is multiply-signed, then the ordered chain will follow the first
signing certificate. The function should also detect cross-
certificate pairs and should include both certificates without
duplicating either certificate.
Extraneous certificates in the CertGroupFrag fragment or contained
in the DBList data stores are ignored. The certificate group returned
by this function can be used as input to the function
CSSM_TP_CertGroupVerify() (CSSM API), or TP_CertGroupVerify() (TP SPI).
The constructed certificate group can be consistent locally or
globally. Consistency can be limited to the local system if locally-
defined points of trust are inserted into the group.
RETURN VALUE
A CSSM_RETURN value indicating success or specifying a particular
error condition. The value CSSM_OK indicates success. All other
values represent an error condition.
ERRORS
Errors are described in the CDSA technical standard. See CDSA.
CSSMERR_TP_INVALID_CL_HANDLE
CSSMERR_TP_INVALID_CSP_HANDLE
CSSMERR_TP_INVALID_DL_HANDLE
CSSMERR_TP_INVALID_DB_HANDLE
CSSMERR_TP_INVALID_DB_LIST_POINTER
CSSMERR_TP_INVALID_DB_LIST
CSSMERR_TP_INVALID_CERTGROUP_POINTER
CSSMERR_TP_INVALID_CERTGROUP
CSSMERR_TP_INVALID_CERTIFICATE
CSSMERR_TP_CERTGROUP_INCOMPLETE
SEE ALSO
Books
Intel CDSA Application Developer's Guide (see CDSA)
Other Help Topics
Functions for the CSSM API:
CSSM_TP_CertGroupPrune
CSSM_TP_CertGroupVerify
Functions for the TP SPI:
TP_CertGroupPrune
TP_CertGroupVerify