CSSM_CSP_CreateAsymmetricContext

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

API Functions

CSSM_CSP_ChangeLoginOwner

CSSM_CSP_CreateDeriveKeyContext

CSSM_CSP_CreateAsymmetricContext

Library
Description
See Also

Parameters
Return Value

NAME

CSSM_CSP_CreateAsymmetricContext - Create an asymmetric encryption cryptographic context (CDSA)

SYNOPSIS

# include <cssm.h>

CSSM_RETURN CSSMAPI CSSM_CSP_CreateAsymmetricContext
(CSSM_CSP_HANDLE CSPHandle,
CSSM_ALGORITHMS AlgorithmID,
const CSSM_ACCESS_CREDENTIALS *AccessCred,
const CSSM_KEY *Key,
CSSM_PADDING Padding,
CSSM_CC_HANDLE *NewContextHandle)

LIBRARY

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

PARAMETERS

`CSPHandle` (input)
		The handle that describes the add-in Cryptographic Service Provider module used to perform this function. If a NULL handle is specified, CSSM returns an error.
`AlgorithmID` (input)
		The algorithm identification number for the algorithm used for asymmetric encryption.
`AccessCred` (input)
		A pointer to the set of one or more credentials required to unlock the private key. The credentials structure can contain an immediate value for the credential, such as a passphrase, or the caller can specify a `callback` function the CSP can use to obtain one or more credentials. Credentials can be required for encryption and decryption operations.
`Key` (input)		The key used for asymmetric encryption. The caller passes a pointer to a CSSM_KEY structure containing the key. When the context is used for a sign operation, `AccessCredentials` is required to access the private key used for signing. When the context is used for a verify operation, the public key is used to verify the signature. When the context is used for a wrapkey operation, the public key can be used as the wrapping key. When the context is used for an unwrap operation, `AccessCredentials` is required to access the private key used to perform the unwrapping.
`Padding` (input/optional)
		The method for padding. Typically specified for ciphers that pad.
`NewContextHandle` (output)
		Cryptographic context handle.

DESCRIPTION

This function creates an asymmetric encryption cryptographic context, given a handle of a CSP, an algorithm identification number, a key, and padding. The cryptographic context handle is returned. The cryptographic context handle can be used to call asymmetric encryption functions and cryptographic wrap or unwrap 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.