GenerateRandom

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

API Functions

GenerateMacUpdate

GetOperationalStatistics

GenerateRandom

Library
Spi Parameters
Notes ON Api
Return Value
See Also

Api Parameters
Description
Notes ON Spi
Errors

NAME

GenerateRandom: CSSM_GenerateRandom, CSP_GenerateRandom function - Generate random data (CDSA)

SYNOPSIS

# include <cssm.h>

API:
CSSM_RETURN CSSMAPI CSSM_GenerateRandom
(CSSM_CC_HANDLE CCHandle,
CSSM_DATA_PTR RandomNumber)
SPI:
CSSM_RETURN CSSMCSPI CSP_GenerateRandom
(CSSM_CSP_HANDLE CSPHandle,
CSSM_CC_HANDLE CCHandle,
const CSSM_CONTEXT *Context,
CSSM_DATA_PTR RandomNumber)

LIBRARY

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

API PARAMETERS

`CCHandle` (input)
		The handle that describes the context of this cryptographic operation used to link to the CSP-managed information.
`RandomNumber` (output)
		Pointer to CSSM_DATA structure used to obtain the random number and the size of the random number in bytes.

SPI PARAMETERS

`CSPHandle` (input)
		The handle that describes the add-in Cryptographic Service Provider module used to perform calls to CSSM for the memory functions managed by CSSM.
`Context` (input)
		Pointer to CSSM_CONTEXT structure that describes the attributes with this context.

DESCRIPTION

This function generates random data.

NOTES ON API

The output is returned to the caller either by filling the caller-specified buffer or by using the application's declared memory allocation functions to allocate buffer space. To specify a specific, preallocated output buffer, the caller must provide an array of one or more CSSM_DATA structures, each containing a Length field value greater than zero and a non-NULL data pointer field value. To specify automatic output buffer allocation by the CSP, the caller must provide an array of one or more CSSM_DATA structures, each containing a Length field value equal to zero and a NULL data pointer field value. The application is always responsible for deallocating the memory when it is no longer needed.

NOTES ON SPI

The output is returned to the caller as specified in Buffer Management for Cryptographic Services.

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.

ERRORS

Errors are described in the CDSA Technical Standard.

None specific to this call.