ObtainPrivateKeyFromPublicKey

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HP Open Source Security for OpenVMS Volume 1:...

API Functions

MDSUTIL_Term

PassThrough

ObtainPrivateKeyFromPublicKey

Library
Description
Return Value
See Also

Parameters
Notes
Errors

NAME

ObtainPrivateKeyFromPublicKey: 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 CSPHandleconst 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 performthis operation.
`PublicKey` (input)
		The public key corresponding to the private keybeing sought.
`PrivateKey` (output)
		A reference to the private key corresponding tothe public key.

DESCRIPTION

Given a public key this function returns a reference to theprivate key. The private key and its associated passphrase can beused as an input to any function requiring a private key value.

NOTES

The KeyData field of the CSSM_KEY structureis allocated by the CSP. The application is required to free this memoryusing the CSSM_FreeKey() (CSSM API), or CSP_FreeKey() (CSP SPI), function or with the memory functions registeredfor the CSPHandle.

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.

ERRORS

Errors are described in the CDSA Technical Standard.

CSSMERR_CSP_PRIVATE_KEY_NOT_FOUND