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DecryptDataFinal
Library
Spi Parameters
Notes For Api
Return Value
See Also
 Api Parameters
Description
Notes For Spi
Errors

NAME

DecryptDataFinal: CSSM_DecryptDataFinal, CSP_DecryptDataFinal - Finalize staged decryption process (CDSA)

SYNOPSIS  

# include <cssm.h>

API:CSSM_RETURN CSSMAPI CSSM_DecryptDataFinal(CSSM_CC_HANDLE CCHandle,CSSM_DATA_PTR RemData)SPI:CSSM_RETURN CSSMCSPI CSP_DecryptDataFinal(CSSM_CSP_HANDLE CSPHandle,CSSM_CC_HANDLE CCHandle,CSSM_DATA_PTR RemData)


return to top LIBRARY  

Common Security Services Manager library (cdsa$incssm300_shr.exe)


return to top API PARAMETERS  

CCHandle (input)
 The handle that describes the context of this cryptographicoperation used to link to the CSP-managed information.
RemData (output)
 A pointer to the CSSM_DATA structure for the lastdecrypted block, if necessary.


return to top SPI PARAMETERS  

CSPHandle (input)
 The handle that describes the add-in CryptographicService Provider module used to perform calls to CSSM for the memoryfunctions managed by CSSM.


return to top DESCRIPTION  

This function finalizes the staged decryption process by returningany remaining plain text not returned in the previous staged decryptioncall. The plain text is returned in a single buffer.


return to top NOTES FOR API  

The output is returned to the caller either by filling thecaller-specified buffer or by using the application's declared memoryallocation functions to allocate buffer space. To specify a specific,pre-allocated output buffer, the caller must provide an array ofone or more CSSM_DATA structures, each containing a Length fieldvalue greater than zero and a non-NULL data pointer field value.To specify automatic output buffer allocation by the CSP, the callermust provide an array of one or more CSSM_DATA structures, each containinga Length field value equal to zero and a NULL data pointer fieldvalue. The application is always responsible for deallocating thememory when it is no longer needed.


return to top NOTES FOR SPI  

The output is returned to the caller as specified in BufferManagement for Cryptographic Services.


return to top RETURN VALUE  

A CSSM_RETURN value indicating success or specifying a particularerror condition. The value CSSM_OK indicates success. All othervalues represent an error condition.


return to top ERRORS  

Errors are described in the CDSA Technical Standard.
CSSMERR_CSP_BLOCK_SIZE_MISMATCHCSSMERR_CSP_OUTPUT_LENGTH_ERROR


return to top SEE ALSO  

Books

Intel CDSA Application Developer's Guide

Online Help

Functions for the CSSM API:

CSSM_DecryptData, CSSM_DecryptDataInit, CSSM_DecryptDataUpdate

Functions for the CSP SPI:

CSP_DecryptData, CSP_DecryptDataInit, CSP_DecryptDataUpdate


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