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         Key key() const { assert(mKey); return mKey; }
  44         void key(const Key &k) { mKey = k; set(CSSM_ATTRIBUTE_KEY, mKey); }
  45
  46     CSSM_ALGORITHMS signOnlyAlgorithm() const   { return mSignOnly; }
  47     void signOnlyAlgorithm(CSSM_ALGORITHMS alg) { mSignOnly = alg; }
  48
  49 protected:
  50         void activate();
  51         CSSM_ALGORITHMS mSignOnly;
  52         Key mKey;
  53 };
  54
  55
  56 class Sign : public SigningContext
  57 {
  58 public:
  59         Sign(const CSP &csp, CSSM_ALGORITHMS alg, CSSM_ALGORITHMS signOnly = CSSM_ALGID_NONE)
  60         : SigningContext(csp, alg, signOnly) { }
  61
  62         // integrated
  63         void sign(const CssmData &data, CssmData &signature) { sign(&data, 1, signature); }
  64         void sign(const CssmData *data, uint32 count, CssmData &signature);
  65
  66         // staged
  67         void init(); // Optional
  68         void sign(const CssmData &data) { sign(&data, 1); }
  69         void sign(const CssmData *data, uint32 count);
  70         void operator () (CssmData &signature);
  71         CssmData operator () () { CssmData signature; (*this)(signature); return signature; }
  72 };
  73
  74 class Verify : public SigningContext
  75 {
  76 public:
  77         Verify(const CSP &csp, CSSM_ALGORITHMS alg, CSSM_ALGORITHMS verifyOnly = CSSM_ALGID_NONE)
  78         : SigningContext(csp, alg, verifyOnly) { }
  79
  80         // integrated
  81         void verify(const CssmData &data, const CssmData &signature) { verify(&data, 1, signature); }
  82         void verify(const CssmData *data, uint32 count, const CssmData &signature);
  83
  84         // staged
  85         void init(); // Optional
  86         void verify(const CssmData &data) { verify(&data, 1); }
  87         void verify(const CssmData *data, uint32 count);
  88         void operator () (const CssmData &signature);
  89 };
  90
  91 } // end namespace CssmClient
  92
  93 } // end namespace Security
  94
  95 #endif // _H_CDSA_CLIENT_SIGNCLIENT