NAME

CSSM_CSP_CreatePassThroughContext

SYNOPSIS

CSSM_CC_HANDLE CSSMAPI CSSM_CSP_CreatePassThroughContext
    (CSSM_CSP_HANDLE CSPHandle,
    const CSSM_KEY_PTR Key,
    const CSSM_DATA_PTR ParamBufs,
    uint32 ParamBufCount)

DESCRIPTION

This function creates a custom cryptographic context, given a handle of a CSP and pointer to a custom input data structure. The cryptographic context handle is returned. The cryptographic context handle can be used to call the CSSM pass-through function for the CSP.

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 error.

Key (input)

The key to be used for the context. The caller passes in a pointer to a CSSM_KEY structure containing the key.

ParamBufs (input)

Array of input buffers to the pass-through call.

ParamBufCount (input)

The number of input buffers pointed to by ParamBufs.

RETURN VALUE

Returns a cryptographic context handle. If the handle is NULL, an error has occurred. Use CSSM_GetError to obtain the error code.

ERRORS

CSSM__INVALID_CSP_HANDLE

Invalid provider handle.

CSSM__MEMORY_ERROR

Internal memory error.

Comments

A CSP can create its own set of custom functions. The context information can be passed through its own data structure. The CSSM_CSP_PassThrough function should be used along with the function ID to call the desired custom function.

SEE ALSO

CSSM_CSP_PassThrough, CSSM_GetContext,
CSSM_SetContext, CSSM_DeleteContext,
CSSM_GetContextAttribute, CSSM_UpdateContextAttributes