NAME
   QuerySize,
   CSSM_QuerySize,
   CSP_QuerySize   - Get size of the output data (CDSA)

 SYNOPSIS
   # include <cssm.h>

    API:
        CSSM_RETURN CSSMAPI CSSM_QuerySize
        (CSSM_CC_HANDLE CCHandle,
        CSSM_BOOL Encrypt,
        uint32 QuerySizeCount,
        CSSM_QUERY_SIZE_DATA_PTR DataBlockSizes)
    SPI:
        CSSM_RETURN CSSMCSPI CSP_QuerySize
        (CSSM_CSP_HANDLE CSPHandle,
        CSSM_CC_HANDLE CCHandle,
        const CSSM_CONTEXT *Context,
        CSSM_BOOL Encrypt,
        uint32 QuerySizeCount,
        CSSM_QUERY_SIZE_DATA_PTR DataBlockSizes)

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

 API PARAMETERS
   CCHandle (input)
           The handle for an encryption and decryption context.

   Encrypt (input)
           A boolean indicating whether encryption is the operation for
           which the output data size should be calculated. If CSSM_TRUE,
           the operation is encryption. If CSSM_FALSE the operation is
           decryption.

   QuerySizeCount (input)
           The number of entries in the array of DataBlockSizes.

   DataBlockSizes (input/output)
           An array of data block input sizes and corresponding entries
           for the data block output sizes that are returned by this
           function.

 SPI PARAMETERS
   CSPHandle (input)
           The handle that describes the add-in cryptographic service
           provider module used to perform calls to CSSM for the memory
           functions managed by CSSM.

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

 DESCRIPTION
   This function queries for the size of the output data for a
   cryptographic operation. If the context is an encryption or
   decryption context type then the Encrypt parameter will determine
   which operation is being performed. If Encrypt is set to CSSM_TRUE
   then it is an encrypt operation, otherwise it is a decrypt operation.
   For all other context types the Encrypt parameter is ignored. This
   function can also be used to query the output size requirements for
   the intermediate steps of a staged cryptographic operation. There
   may be algorithm-specific and token-specific rules restricting the
   lengths of data following data update calls.

 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_EncryptData
       CSSM_EncryptDataUpdate
       CSSM_DecryptData
       CSSM_DecryptDataUpdate
       CSSM_SignData
       CSSM_VerifyData
       CSSM_DigestData
       CSSM_GenerateMac

   Functions for the CSP SPI:

       CSP_EncryptData
       CSP_EncryptDataUpdate
       CSP_DecryptData
       CSP_DecryptDataUpdate
       CSP_SignData
       CSP_VerifyData
       CSP_DigestData
       CSP_GenerateMac