usr/src/lib/pkcs11/pkcs11_kernel/common/kernelRand.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include "kernelGlobal.h"
  30 #include <errno.h>
  31 #include <security/cryptoki.h>
  32 #include <sys/crypto/common.h>
  33 #include <sys/crypto/ioctl.h>
  34
  35 CK_RV
  36 C_SeedRandom(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pSeed, CK_ULONG ulSeedLen)
  37 {
  38         kernel_session_t *session_p;
  39         crypto_seed_random_t seed_random;
  40         boolean_t ses_lock_held = B_FALSE;
  41         CK_RV rv;
  42         int r;
  43
  44         if (!kernel_initialized)
  45                 return (CKR_CRYPTOKI_NOT_INITIALIZED);
  46
  47         /* Obtain the session pointer. */
  48         rv = handle2session(hSession, &session_p);
  49         if (rv != CKR_OK)
  50                 return (rv);
  51
  52         if ((pSeed == NULL) || (ulSeedLen == 0)) {
  53                 REFRELE(session_p, ses_lock_held);
  54                 return (CKR_ARGUMENTS_BAD);
  55         }
  56
  57         seed_random.sr_session = session_p->k_session;
  58         seed_random.sr_seedbuf = (caddr_t)pSeed;
  59         seed_random.sr_seedlen = ulSeedLen;
  60
  61         while ((r = ioctl(kernel_fd, CRYPTO_SEED_RANDOM, &seed_random)) < 0) {
  62                 if (errno != EINTR)
  63                         break;
  64         }
  65         if (r < 0) {
  66                 rv = CKR_FUNCTION_FAILED;
  67         } else {
  68                 if (seed_random.sr_return_value != CRYPTO_SUCCESS) {
  69                         rv = crypto2pkcs11_error_number(
  70                             seed_random.sr_return_value);
  71                 } else {
  72                         rv = CKR_OK;
  73                 }
  74         }
  75
  76         REFRELE(session_p, ses_lock_held);
  77         return (rv);
  78 }
  79
  80 CK_RV
  81 C_GenerateRandom(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pRandomData,
  82     CK_ULONG ulRandomLen)
  83 {
  84         kernel_session_t *session_p;
  85         crypto_generate_random_t generate_random;
  86         boolean_t ses_lock_held = B_FALSE;
  87         CK_RV rv;
  88         int r;
  89
  90         if (!kernel_initialized)
  91                 return (CKR_CRYPTOKI_NOT_INITIALIZED);
  92
  93         /* Obtain the session pointer. */
  94         rv = handle2session(hSession, &session_p);
  95         if (rv != CKR_OK)
  96                 return (rv);
  97
  98         if ((pRandomData == NULL) || (ulRandomLen == 0)) {
  99                 REFRELE(session_p, ses_lock_held);
 100                 return (CKR_ARGUMENTS_BAD);
 101         }
 102
 103         generate_random.gr_session = session_p->k_session;
 104         generate_random.gr_buf = (caddr_t)pRandomData;
 105         generate_random.gr_buflen = ulRandomLen;
 106
 107         while ((r = ioctl(kernel_fd, CRYPTO_GENERATE_RANDOM,
 108             &generate_random)) < 0) {
 109                 if (errno != EINTR)
 110                         break;
 111         }
 112         if (r < 0) {
 113                 rv = CKR_FUNCTION_FAILED;
 114         } else {
 115                 if (generate_random.gr_return_value != CRYPTO_SUCCESS) {
 116                         rv = crypto2pkcs11_error_number(
 117                             generate_random.gr_return_value);
 118                 } else {
 119                         rv = CKR_OK;
 120                 }
 121         }
 122
 123         REFRELE(session_p, ses_lock_held);
 124         return (rv);
 125 }