cdsa/cdsa_client/signclient.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 // signclient - client interface to CSSM sign/verify contexts
  21 //
  22 #ifndef _H_CDSA_CLIENT_SIGNCLIENT
  23 #define _H_CDSA_CLIENT_SIGNCLIENT  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 context
  36 //
  37 class SigningContext : public Context
  38 {
  39 public:
  40         SigningContext(const CSP &csp, CSSM_ALGORITHMS alg, CSSM_ALGORITHMS signOnly = CSSM_ALGID_NONE)
  41         : Context(csp, alg), mSignOnly(signOnly) { }
  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         CSSM_ALGORITHMS mSignOnly;
  50         Key mKey;
  51 };
  52
  53
  54 class Sign : public SigningContext
  55 {
  56 public:
  57         Sign(const CSP &csp, CSSM_ALGORITHMS alg) : SigningContext(csp, alg) { }
  58
  59         // integrated
  60         void sign(const CssmData &data, CssmData &signature) { sign(&data, 1, signature); }
  61         void sign(const CssmData *data, uint32 count, CssmData &signature);
  62
  63         // staged
  64         void init(); // Optional
  65         void sign(const CssmData &data) { sign(&data, 1); }
  66         void sign(const CssmData *data, uint32 count);
  67         void operator () (CssmData &signature);
  68         CssmData operator () () { CssmData signature; (*this)(signature); return signature; }
  69 };
  70
  71 class Verify : public SigningContext
  72 {
  73 public:
  74         Verify(const CSP &csp, CSSM_ALGORITHMS alg) : SigningContext(csp, alg) { }
  75
  76         // integrated
  77         void verify(const CssmData &data, const CssmData &signature) { verify(&data, 1, signature); }
  78         void verify(const CssmData *data, uint32 count, const CssmData &signature);
  79
  80         // staged
  81         void init(); // Optional
  82         void verify(const CssmData &data) { verify(&data, 1); }
  83         void verify(const CssmData *data, uint32 count);
  84         void operator () (const CssmData &signature);
  85 };
  86
  87 } // end namespace CssmClient
  88
  89 } // end namespace Security
  90
  91 #endif // _H_CDSA_CLIENT_SIGNCLIENT