libpkcs11/common/pkcs11Rand.c

	pkcs11Rand.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <security/cryptoki.h>
#include "pkcs11Global.h"
#include "pkcs11Session.h"
#include "pkcs11Slot.h"

/*
 * C_SeedRandom will verify that the session handle is valid within
 * the framework, that random numbers are not disabled for the slot
 * associated with this session, and then redirect to the underlying
 * provider.
 */
CK_RV
C_SeedRandom(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pSeed, CK_ULONG ulSeedLen)
{
    CK_RV rv;
    pkcs11_session_t *sessp;
    CK_SLOT_ID slotid;

    /* Check for a fastpath */
    if (purefastpath || policyfastpath) {
        /* Check if random number functions are allowed */
        if (policyfastpath &&
            slottable->st_slots[fast_slot]->sl_norandom) {
            return (CKR_FUNCTION_FAILED);
        }
        return (fast_funcs->C_SeedRandom(hSession, pSeed, ulSeedLen));
    }

    if (!pkcs11_initialized) {
        return (CKR_CRYPTOKI_NOT_INITIALIZED);
    }

    /* Obtain the session pointer */
    HANDLE2SESSION(hSession, sessp, rv);

    if (rv != CKR_OK) {
        return (rv);
    }

    slotid = sessp->se_slotid;

    /* Check if random number functions are allowed */
    if (slottable->st_slots[slotid]->sl_norandom)
        return (CKR_FUNCTION_FAILED);

    /* Pass data to the provider */
    rv = FUNCLIST(slotid)->C_SeedRandom(sessp->se_handle, pSeed,
        ulSeedLen);

    /* Present consistent interface to the application */
    if (rv == CKR_FUNCTION_NOT_SUPPORTED) {
        return (CKR_FUNCTION_FAILED);
    }

    return (rv);
}

/*
 * C_GenerateRandom will verify that the session handle is valid within
 * the framework, that random numbers are not disabled for the slot
 * associated with this session, and then redirect to the underlying
 * provider.
 */
CK_RV
C_GenerateRandom(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pRandomData,
    CK_ULONG ulRandomLen)
{
    CK_RV rv;
    pkcs11_session_t *sessp;
    CK_SLOT_ID slotid;

    /* Check for a fastpath */
    if (purefastpath || policyfastpath) {
        /* Check if random number functions are allowed */
        if (policyfastpath &&
            slottable->st_slots[fast_slot]->sl_norandom) {
            return (CKR_FUNCTION_FAILED);
        }
        return (fast_funcs->C_GenerateRandom(hSession, pRandomData,
                ulRandomLen));
    }

    if (!pkcs11_initialized) {
        return (CKR_CRYPTOKI_NOT_INITIALIZED);
    }

    /* Obtain the session pointer */
    HANDLE2SESSION(hSession, sessp, rv);

    if (rv != CKR_OK) {
        return (rv);
    }

    slotid = sessp->se_slotid;

    /* Check if random number functions are allowed */
    if (slottable->st_slots[slotid]->sl_norandom)
        return (CKR_FUNCTION_FAILED);

    /* Pass data to the provider */
    rv = FUNCLIST(sessp->se_slotid)->C_GenerateRandom(sessp->se_handle,
        pRandomData, ulRandomLen);

    /* Present consistent interface to the application */
    if (rv == CKR_FUNCTION_NOT_SUPPORTED) {
        return (CKR_FUNCTION_FAILED);
    }

    return (rv);
}