usr/src/lib/pkcs11/libpkcs11/common/metaDigest.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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 /*
  29  * Message Digesting Functions
  30  * (as defined in PKCS#11 spec section 11.10)
  31  */
  32
  33 #include "metaGlobal.h"
  34
  35
  36 /*
  37  * meta_DigestInit
  38  *
  39  */
  40 CK_RV
  41 meta_DigestInit(CK_SESSION_HANDLE hSession, CK_MECHANISM_PTR pMechanism)
  42 {
  43         CK_RV rv;
  44         meta_session_t *session;
  45
  46         if (pMechanism == NULL)
  47                 return (CKR_ARGUMENTS_BAD);
  48
  49         rv = meta_handle2session(hSession, &session);
  50         if (rv != CKR_OK)
  51                 return (rv);
  52
  53         rv = meta_operation_init_defer(CKF_DIGEST, session, pMechanism, NULL);
  54
  55         REFRELEASE(session);
  56
  57         return (rv);
  58 }
  59
  60
  61 /*
  62  * meta_Digest
  63  *
  64  */
  65 CK_RV
  66 meta_Digest(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pData, CK_ULONG ulDataLen,
  67     CK_BYTE_PTR pDigest, CK_ULONG_PTR pulDigestLen)
  68 {
  69         CK_RV rv;
  70         meta_session_t *session;
  71
  72
  73         if (pData == NULL || pulDigestLen == NULL)
  74                 return (CKR_ARGUMENTS_BAD);
  75
  76         rv = meta_handle2session(hSession, &session);
  77         if (rv != CKR_OK)
  78                 return (rv);
  79
  80         rv = meta_do_operation(CKF_DIGEST, MODE_SINGLE, session, NULL,
  81             pData, ulDataLen, pDigest, pulDigestLen);
  82
  83         REFRELEASE(session);
  84
  85         return (rv);
  86 }
  87
  88
  89 /*
  90  * meta_DigestUpdate
  91  *
  92  */
  93 CK_RV
  94 meta_DigestUpdate(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pPart,
  95     CK_ULONG ulPartLen)
  96 {
  97         CK_RV rv;
  98         meta_session_t *session;
  99
 100
 101         if (pPart == NULL)
 102                 return (CKR_ARGUMENTS_BAD);
 103
 104         rv = meta_handle2session(hSession, &session);
 105         if (rv != CKR_OK)
 106                 return (rv);
 107
 108         rv = meta_do_operation(CKF_DIGEST, MODE_UPDATE, session, NULL,
 109             pPart, ulPartLen, NULL, NULL);
 110
 111         REFRELEASE(session);
 112
 113         return (rv);
 114 }
 115
 116
 117 /*
 118  * meta_DigestKey
 119  *
 120  * NOTE: This function can fail under certain circumstances!
 121  * Unlike the other crypto functions, we didn't get the key object
 122  * when the operation was initialized with C_DigestInit().
 123  * Thus, the slot we're using for the digest operation may
 124  * not be the slot containing the key -- if the key is extractible we can
 125  * deal with it, but if it's not the operation will FAIL.
 126  */
 127 CK_RV
 128 meta_DigestKey(CK_SESSION_HANDLE hSession, CK_OBJECT_HANDLE hKey)
 129 {
 130         CK_RV rv;
 131         meta_session_t *session;
 132         meta_object_t *key;
 133
 134         rv = meta_handle2session(hSession, &session);
 135         if (rv != CKR_OK)
 136                 return (rv);
 137
 138         rv = meta_handle2object(hKey, &key);
 139         if (rv != CKR_OK) {
 140                 REFRELEASE(session);
 141                 return (rv);
 142         }
 143
 144         /* meta_do_operation() will clone the key, if needed. */
 145         rv = meta_do_operation(CKF_DIGEST, MODE_UPDATE_WITHKEY, session, key,
 146             NULL, 0, NULL, NULL);
 147
 148         OBJRELEASE(key);
 149         REFRELEASE(session);
 150
 151         return (rv);
 152 }
 153
 154
 155 /*
 156  * meta_DigestFinal
 157  *
 158  */
 159 CK_RV
 160 meta_DigestFinal(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pDigest,
 161     CK_ULONG_PTR pulDigestLen)
 162 {
 163         CK_RV rv;
 164         meta_session_t *session;
 165
 166         if (pulDigestLen == NULL)
 167                 return (CKR_ARGUMENTS_BAD);
 168
 169         rv = meta_handle2session(hSession, &session);
 170         if (rv != CKR_OK)
 171                 return (rv);
 172
 173         rv = meta_do_operation(CKF_DIGEST, MODE_FINAL, session, NULL,
 174             NULL, 0, pDigest, pulDigestLen);
 175
 176         REFRELEASE(session);
 177
 178         return (rv);
 179 }