NAME
   CSSM_UpdateContextAttributes - Update context attribute values (CDSA)

 SYNOPSIS
   # include <cssm.h>

        CSSM_RETURN CSSMAPI CSSM_UpdateContextAttributes
        (CSSM_CC_HANDLE CCHandle,
        uint32 NumberOfAttributes,
        const CSSM_CONTEXT_ATTRIBUTE *ContextAttributes)

 LIBRARY
   Common Security Services Manager library (CDSA$INCSSM300_SHR.EXE)

 PARAMETERS
   CCHandle (input)
           The handle to the existing context.

   NumberOfAttributes (input)
           The number of CSSM_CONTEXT_ATTRIBUTE structures to allocate.

   ContextAttributes (input)
           Pointer to data that describes the attributes to be associated
           with this context.

 DESCRIPTION
   This function updates one or more context attribute values stored as
   part of an existing context specified by CCHandle. The basic context
   structure is not modified by this function. Only the context attributes
   are updated.

   The NumberOfAttributes parameter specifies the number of attributes to
   update. The new attribute values are specified in ContextAttributes.
   If an attribute provided in ContextAttributes is already present in the
   existing context, the existing value is replaced by the new value. If
   an attribute provided in ContextAttributes is not present in the
   existing context, then the new attribute is added. Attribute values are
   never deleted from the existing context.

 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_CSSM_INVALID_CONTEXT_HANDLE
        CSSMERR_CSSM_INVALID_ATTRIBUTE

 SEE ALSO
   Books

   Intel CDSA Application Developer's Guide (see CDSA)

   Other Help Topics

   Functions: CSSM_DeleteContextAttributes
              CSSM_GetContextAttribute