cdsa/cdsa_client/macclient.h

   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 #ifndef _H_CDSA_CLIENT_MACCLIENT
  23 #define _H_CDSA_CLIENT_MACCLIENT  1
  24
  25 #include <Security/cspclient.h>
  26 #include <Security/keyclient.h>
  27
  28 namespace Security
  29 {
  30
  31 namespace CssmClient
  32 {
  33
  34 //
  35 // A signing/verifying mac context
  36 //
  37 class MacContext : public Context
  38 {
  39 public:
  40         MacContext(const CSP &csp, CSSM_ALGORITHMS alg)
  41                 : Context(csp, alg) { }
  42
  43         // preliminary interface
  44         Key key() const { assert(mKey); return mKey; }
  45         void key(const Key &k) { mKey = k; set(CSSM_ATTRIBUTE_KEY, mKey); }
  46
  47 protected:
  48         void activate();
  49         Key mKey;
  50 };
  51
  52
  53 class GenerateMac : public MacContext
  54 {
  55 public:
  56         GenerateMac(const CSP &csp, CSSM_ALGORITHMS alg) : MacContext(csp, alg) { }
  57
  58         // integrated
  59         void sign(const CssmData &data, CssmData &mac) { sign(&data, 1, mac); }
  60         void sign(const CssmData *data, uint32 count, CssmData &mac);
  61
  62         // staged
  63         void init(); // Optional
  64         void sign(const CssmData &data) { sign(&data, 1); }
  65         void sign(const CssmData *data, uint32 count);
  66         void operator () (CssmData &mac);
  67         CssmData operator () () { CssmData mac; (*this)(mac); return mac; }
  68 };
  69
  70 class VerifyMac : public MacContext
  71 {
  72 public:
  73         VerifyMac(const CSP &csp, CSSM_ALGORITHMS alg) : MacContext(csp, alg) { }
  74
  75         // integrated
  76         void verify(const CssmData &data, const CssmData &mac) { verify(&data, 1, mac); }
  77         void verify(const CssmData *data, uint32 count, const CssmData &mac);
  78
  79         // staged
  80         void init(); // Optional
  81         void verify(const CssmData &data) { verify(&data, 1); }
  82         void verify(const CssmData *data, uint32 count);
  83         void operator () (const CssmData &mac);
  84 };
  85
  86 } // end namespace CssmClient
  87
  88 } // end namespace Security
  89
  90 #endif // _H_CDSA_CLIENT_MACCLIENT