NAME
CSSM_CSP_ObtainPrivateKeyFromPublicKey, CSP_ObtainPrivateKeyFromPublicKey — Convert public key to private key (CDSA)
SYNOPSIS
# include <cssm.h>
API:
CSSM_RETURN CSSMAPI CSSM_CSP_ObtainPrivateKeyFromPublicKey
(CSSM_CSP_HANDLE CSPHandle
const CSSM_KEY *PublicKey,
CSSM_KEY_PTR PrivateKey)
SPI:
CSSM_RETURN CSSMCSPI CSP_ObtainPrivateKeyFromPublicKey
(CSSM_CSP_HANDLE CSPHandle,
const CSSM_KEY *PublicKey,
CSSM_KEY_PTR PrivateKey) |
LIBRARY
Common Security Services Manager library (cdsa$incssm300_shr.exe)
PARAMETERS
| CSPHandle (input) |
| | | The handle that describes the module to perform
this operation. |
| PublicKey (input) |
| | | The public key corresponding to the private key
being sought. |
| PrivateKey (output) |
| | | A reference to the private key corresponding to
the public key. |
DESCRIPTION
Given a public key this function returns a reference to the
private key. The private key and its associated passphrase can be
used as an input to any function requiring a private key value.
NOTES
The KeyData field of the CSSM_KEY structure
is allocated by the CSP. The application is required to free this memory
using the CSSM_FreeKey() (CSSM API), or CSP_FreeKey() (CSP SPI), function or with the memory functions registered
for the CSPHandle.
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.
CSSMERR_CSP_PRIVATE_KEY_NOT_FOUND |
SEE ALSO
Books
Intel CDSA Application Developer's Guide
