LIBRARYCommon 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 operationfor 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 correspondingentries for the data block output sizes that are returned by thisfunction.
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.
Context (input)
Pointer to CSSM_CONTEXT structure that describesthe attributes with this context.
DESCRIPTIONThis function queries for the size of the output data fora cryptographic operation. If the context is an encryption or decryptioncontext type then the Encrypt parameter willdetermine which operation is being performed. If Encrypt isset to CSSM_TRUE then it is an encrypt operation, otherwise it isa decrypt operation. For all other context types the Encrypt parameteris ignored. This function can also be used to query the output sizerequirements for the intermediate steps of a staged cryptographicoperation. There may be algorithm-specific and token-specific rulesrestricting the lengths of data following data update calls. RETURN VALUEA CSSM_RETURN value indicating success or specifying a particularerror condition. The value CSSM_OK indicates success. All othervalues represent an error condition. ERRORSErrors are described in the CDSA Technical Standard.
HP Open Source Security for OpenVMS Volume 1:... 
API Functions
