NAME

DigestDataClone, CSSM_DigestDataClone, CSP_DigestDataClone − Clone a staged message digest (CDSA)

SYNOPSIS

# include <cdsa/cssm.h>

API:
CSSM_RETURN CSSMAPI CSSM_DigestDataClone
(CSSM_CC_HANDLE CCHandle,
CSSM_CC_HANDLE ∗ClonednewCCHandle)
SPI:
CSSM_RETURN CSSMCSPI CSP_DigestDataClone
(CSSM_CSP_HANDLE CSPHandle,
CSSM_CC_HANDLE CCHandle,
CSSM_CC_HANDLE ClonednewCCHandle)

LIBRARY

Common Security Services Manager library (libcssm.so)

API PARAMETERS

CCHandle (input)
The handle that describes the context of a staged message digest operation.

ClonednewCCHandle (output)
The cloned digest context handle. The handle will be set to CSSM_INVALID_HANDLE if the function fails.

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.

DESCRIPTION

This function clones a given staged message digest context with its cryptographic attributes and intermediate result. 

NOTES

When a digest context is cloned, a new context is created with data associated with the parent context. Changes made to the parent context after calling this function will not be reflected in the cloned context. The cloned context could be used with the CSSM_DigestDataUpdate() and CSSM_DigestDataFinal() functions. 

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_intro(3). 

None specific to this call. 

SEE ALSO

Books

Intel CDSA Application Developer’s Guide (see CDSA_intro(3))

Reference Pages

Functions for the CSSM API:

CSSM_DigestData(3), CSSM_DigestDataInit(3), CSSM_DigestDataUpdate(3), CSSM_DigestDataFinal(3)

Functions for the CSP SPI:

CSP_DigestData(3), CSP_DigestDataInit(3), CSP_DigestDataUpdate(3), CSP_DigestDataFinal(3)