CSSM_CSP_CreateKeyGenContext

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

API Functions

CSSM_CSP_CreateDigestContext

CSSM_CSP_CreateMacContext

CSSM_CSP_CreateKeyGenContext

Library
Description
See Also

Parameters
Return Value

NAME

CSSM_CSP_CreateKeyGenContext - Create a key generation cryptographic context (CDSA)

SYNOPSIS

# include <cssm.h>

CSSM_RETURN CSSMAPI CSSM_CSP_CreateKeyGenContext(CSSM_CSP_HANDLE CSPHandle,CSSM_ALGORITHMS AlgorithmID,uint32 KeySizeInBits,const CSSM_CRYPTO_DATA *Seed,const CSSM_DATA *Salt,const CSSM_DATE *StartDate,const CSSM_DATE *EndDate,const CSSM_DATA *Params,CSSM_CC_HANDLE *NewContextHandle)

LIBRARY

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

PARAMETERS

`CSPHandle` (input)
		The handle that describes the add-in CryptographicService Provider module used to perform this function. If a NULLhandle is specified, CSSM returns an error.
`AlgorithmID` (input)
		The algorithm identification number of the algorithmused for key generation.
`KeySizeInBits` (input)
		The logical size of the key (specified in bits).This refers to either the actual key size (for symmetric key generation)or the modulus size (for asymmetric key pair generation).
`Seed` (input/optional)
		A seed used to generate the key. The caller caneither pass a seed and seed length in bytes or pass a callback function.If NULL is passed, the Cryptographic Service Provider will use its defaultseed-handling mechanism.
`Salt` (input/optional)
		A salt used to generate the key.
`StartDate` (input/optional)
		A start date for the validity period of the keyor key pair being generated.
`EndDate` (input/optional)
		An end date for the validity period of the key orkey pair being generated.
`Params` (input/optional)
		A data buffer containing parameters required togenerate a key pair for a specific algorithm.
`NewContextHandle` (output)
		Cryptographic context handle.

DESCRIPTION

This function creates a key generation cryptographic context,given a handle of a CSP, an algorithm identification number, a passphrase,a modulus size (for public or private keypair generation), a keysize (for symmetric key generation), a seed, and a salt. The cryptographiccontext handle is returned. The cryptographic context handle canbe used to call key/ or keypair generation functions.

Additional attributes can be added to the newly created contextusing the CSSM_UpdateContextAttributes() function. Incremental attributes of interest for keygeneration include a handle-pair identifying a Data Storage Libraryservice module and an open data store for CSPs that manage multiplepersistent key stores. If a CSP does not support multiple key stores,the CSP ignores the presence or absence of this attribute.

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.