NAME
   QueryKeySizeInBits,
   CSSM_QueryKeySizeInBits,
   CSP_QueryKeySizeInBits - Get CSP logical and effective sizes (CDSA)

 SYNOPSIS
   # include <cssm.h>

    API:
        CSSM_RETURN CSSMAPI CSSM_QueryKeySizeInBits
        (CSSM_CSP_HANDLE CSPHandle,
        CSSM_CC_HANDLE CCHandle,
        const CSSM_KEY *Key,
        CSSM_KEY_SIZE_PTR KeySize)
    SPI:
        CSSM_RETURN CSSMCSPI CSP_QueryKeySizeInBits
        (CSSM_CSP_HANDLE CSPHandle,
        CSSM_CC_HANDLE CCHandle,
        const CSSM_CONTEXT *Context,
        const CSSM_KEY *Key,
        CSSM_KEY_SIZE_PTR KeySize)

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

 API PARAMETERS
   CSPHandle (input/optional)
           The handle that describes the cryptographic service provider
           module used to perform this function.

           For the API, this parameter is ignored if a valid
           cryptographic context handle is specified.

   CCHandle (input/optional)
           A handle to a context that describes a cryptographic
           operation.  The cryptographic context should contain a
           handle to the CSP that is being queried and the key about
           which key-size information is being requested.

   Key (input/optional)
           A pointer to a CSSM_KEY structure containing the key about
           which key-size information is being requested. This
           parameter is ignored if a valid cryptographic context
           handle is specified.

   KeySize (output)
           Pointer to a CSSM_KEY_SIZE data structure. The logical and
           effective sizes (in bits) for the key are returned in this
           structure.

           For the API, if no context handle is provided, only the
           CSSM_KEY_SIZE LogicalKeySizeInBits field is set.

 SPI PARAMETERS
   Context (input)
           Pointer to CSSM_CONTEXT structure that describes the attributes
           with this context.

 DESCRIPTION
   This function queries a Cryptographic Service Provider (CSP) for the
   logical and effective sizes of a specified key.

   The cryptographic service provider (handle) and the key can be
   specified either in the cryptographic context or as parameters to
   the function call.  If a valid cryptographic context handle
   parameter is specified, the CSP handle and key parameters are ignored.

 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_CSP_QUERY_SIZE_UNKNOWN

 SEE ALSO
   Books

   Intel CDSA Application Developer's Guide (see CDSA)

   Other Help Topics

   Functions for the CSSM API:

       CSSM_GenerateRandom
       CSSM_GenerateKeyPair
       CSSM_GenerateKey

   Functions for the CSP SPI:

       CSP_GenerateRandom
       CSP_GenerateKeyPair
       CSP_GenerateKey