1/*
2 * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
3 *
4 * The contents of this file constitute Original Code as defined in and are
5 * subject to the Apple Public Source License Version 1.2 (the 'License').
6 * You may not use this file except in compliance with the License. Please obtain
7 * a copy of the License at http://www.apple.com/publicsource and read it before
8 * using this file.
9 *
10 * This Original Code and all software distributed under the License are
11 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
12 * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
13 * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14 * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
15 * specific language governing rights and limitations under the License.
16 */
17
18
19//
20// macclient - client interface to CSSM sign/verify mac contexts
21//
22#include <security_cdsa_client/macclient.h>
23
24using namespace CssmClient;
25
26
27//
28// Common features of signing and verify mac contexts
29//
30void MacContext::activate()
31{
32    {
33        StLock<Mutex> _(mActivateMutex);
34        if (!mActive)
35        {
36            check(CSSM_CSP_CreateMacContext(attachment()->handle(), mAlgorithm,
37                  mKey, &mHandle));
38            mActive = true;
39        }
40    }
41
42    if (cred())
43        cred(cred());		// install explicitly
44}
45
46
47//
48// Signing
49//
50void GenerateMac::sign(const CssmData *data, uint32 count, CssmData &mac)
51{
52	unstaged();
53	check(CSSM_GenerateMac(handle(), data, count, &mac));
54}
55
56void GenerateMac::init()
57{
58	check(CSSM_GenerateMacInit(handle()));
59	mStaged = true;
60}
61
62void GenerateMac::sign(const CssmData *data, uint32 count)
63{
64	staged();
65	check(CSSM_GenerateMacUpdate(handle(), data, count));
66}
67
68void GenerateMac::operator () (CssmData &mac)
69{
70	staged();
71	check(CSSM_GenerateMacFinal(handle(), &mac));
72	mStaged = false;
73}
74
75
76//
77// Verifying
78//
79void VerifyMac::verify(const CssmData *data, uint32 count, const CssmData &mac)
80{
81	unstaged();
82	check(CSSM_VerifyMac(handle(), data, count, &mac));
83}
84
85void VerifyMac::init()
86{
87	check(CSSM_VerifyMacInit(handle()));
88	mStaged = true;
89}
90
91void VerifyMac::verify(const CssmData *data, uint32 count)
92{
93	staged();
94	check(CSSM_VerifyMacUpdate(handle(), data, count));
95}
96
97void VerifyMac::operator () (const CssmData &mac)
98{
99	staged();
100	check(CSSM_VerifyMacFinal(handle(), &mac));
101	mStaged = false;
102}
103