libsecurity_cdsa_client/lib/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_cdsa_client/cspclient.h>
  26 #include <security_cdsa_client/keyclient.h>
  27
  28 namespace Security {
  29 namespace CssmClient {
  30
  31
  32 //
  33 // A signing/verifying context
  34 //
  35 class SigningContext : public Context
  36 {
  37 public:
  38         SigningContext(const CSP &csp, CSSM_ALGORITHMS alg, CSSM_ALGORITHMS signOnly = CSSM_ALGID_NONE)
  39         : Context(csp, alg), mSignOnly(signOnly) { }
  40
  41         Key key() const { assert(mKey); return mKey; }
  42         void key(const Key &k) { mKey = k; set(CSSM_ATTRIBUTE_KEY, mKey); }
  43
  44     CSSM_ALGORITHMS signOnlyAlgorithm() const   { return mSignOnly; }
  45     void signOnlyAlgorithm(CSSM_ALGORITHMS alg) { mSignOnly = alg; }
  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, CSSM_ALGORITHMS signOnly = CSSM_ALGID_NONE)
  58         : SigningContext(csp, alg, signOnly) { }
  59
  60         // integrated
  61         void sign(const CssmData &data, CssmData &signature) { sign(&data, 1, signature); }
  62         void sign(const CssmData *data, uint32 count, CssmData &signature);
  63
  64         // staged
  65         void init(); // Optional
  66         void sign(const CssmData &data) { sign(&data, 1); }
  67         void sign(const CssmData *data, uint32 count);
  68         void operator () (CssmData &signature);
  69         CssmData operator () () { CssmData signature; (*this)(signature); return signature; }
  70 };
  71
  72 class Verify : public SigningContext
  73 {
  74 public:
  75         Verify(const CSP &csp, CSSM_ALGORITHMS alg, CSSM_ALGORITHMS verifyOnly = CSSM_ALGID_NONE)
  76         : SigningContext(csp, alg, verifyOnly) { }
  77
  78         // integrated
  79         void verify(const CssmData &data, const CssmData &signature) { verify(&data, 1, signature); }
  80         void verify(const CssmData *data, uint32 count, const CssmData &signature);
  81
  82         // staged
  83         void init(); // Optional
  84         void verify(const CssmData &data) { verify(&data, 1); }
  85         void verify(const CssmData *data, uint32 count);
  86         void operator () (const CssmData &signature);
  87 };
  88
  89 } // end namespace CssmClient
  90
  91 } // end namespace Security
  92
  93 #endif // _H_CDSA_CLIENT_SIGNCLIENT