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 CryptographicService Provider module used to perform this function. If a NULLhandle is specified, CSSM returns an error.
`AlgorithmID` (input)
		The algorithm identification number for the algorithmused for asymmetric encryption.
`AccessCred` (input)
		A pointer to the set of one or more credentialsrequired to unlock the private key. The credentials structure cancontain an immediate value for the credential, such as a passphrase,or the caller can specify a `callback` functionthe CSP can use to obtain one or more credentials. Credentials canbe required for encryption and decryption operations.
`Key` (input)		The key used for asymmetric encryption. The callerpasses a pointer to a CSSM_KEY structure containing the key. Whenthe context is used for a sign operation, `AccessCredentials` isrequired to access the private key used for signing. When the contextis used for a verify operation, the public key is used to verifythe signature. When the context is used for a wrapkey operation,the public key can be used as the wrapping key. When the contextis used for an unwrap operation, `AccessCredentials` isrequired to access the private key used to perform the unwrapping.
`Padding` (input/optional)
		The method for padding. Typically specified forciphers that pad.
`NewContextHandle` (output)
		Cryptographic context handle.

DESCRIPTION

This function creates an asymmetric encryption cryptographiccontext, 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 asymmetricencryption functions and cryptographic wrap or unwrap functions.

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.