OSX/libsecurity_apple_csp/lib/RSA_DSA_signature.h

   1 /*
   2  * Copyright (c) 2000-2001,2011,2013-2014 Apple 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  * RSA_DSA_signature.h - openssl-based signature classes.
  21  */
  22
  23 #ifndef _RSA_DSA_SIGNATURE_H_
  24 #define _RSA_DSA_SIGNATURE_H_
  25
  26 #include <openssl/rsa_legacy.h>
  27 #include <openssl/dsa_legacy.h>
  28 #include <RawSigner.h>
  29 #include <AppleCSPSession.h>
  30
  31 #define RSA_SIG_PADDING_DEFAULT         RSA_PKCS1_PADDING
  32
  33 class RSASigner : public RawSigner {
  34 public:
  35         RSASigner(
  36                 Allocator       &alloc,
  37                 AppleCSPSession &session,
  38                 CSSM_ALGORITHMS digestAlg) :
  39                         RawSigner(alloc, digestAlg),
  40                         mRsaKey(NULL),
  41                         mWeMallocdRsaKey(false),
  42                         mSession(session),
  43                         mPadding(RSA_SIG_PADDING_DEFAULT) { }
  44
  45         ~RSASigner();
  46
  47         /* reusable init */
  48         void signerInit(
  49                 const Context   &context,
  50                 bool                    isSigning);
  51
  52
  53         /* sign */
  54         void sign(
  55                 const void              *data,
  56                 size_t                  dataLen,
  57                 void                    *sig,
  58                 size_t                  *sigLen);       /* IN/OUT */
  59
  60         /* verify */
  61         void verify(
  62                 const void      *data,
  63                 size_t                  dataLen,
  64                 const void              *sig,
  65                 size_t                  sigLen);
  66
  67         /* works for both, but only used for signing */
  68         size_t maxSigSize();
  69
  70 private:
  71
  72         /*
  73          * obtain key from context, validate, convert to RSA key
  74          */
  75         void keyFromContext(
  76                 const Context   &context);
  77
  78         RSA                                     *mRsaKey;
  79         bool                            mWeMallocdRsaKey;
  80         AppleCSPSession         &mSession;
  81         int                                     mPadding;               // RSA_NO_PADDING, RSA_PKCS1_PADDING
  82 };
  83
  84 class DSASigner : public RawSigner {
  85 public:
  86         DSASigner(
  87                 Allocator       &alloc,
  88                 AppleCSPSession &session,
  89                 CSSM_ALGORITHMS digestAlg) :
  90                         RawSigner(alloc, digestAlg),
  91                         mDsaKey(NULL),
  92                         mWeMallocdDsaKey(false),
  93                         mSession(session) { }
  94
  95         ~DSASigner();
  96
  97         /* reusable init */
  98         void signerInit(
  99                 const Context   &context,
 100                 bool                    isSigning);
 101
 102
 103         /* sign */
 104         void sign(
 105                 const void              *data,
 106                 size_t                  dataLen,
 107                 void                    *sig,
 108                 size_t                  *sigLen);       /* IN/OUT */
 109
 110         /* verify */
 111         void verify(
 112                 const void      *data,
 113                 size_t                  dataLen,
 114                 const void              *sig,
 115                 size_t                  sigLen);
 116
 117         /* works for both, but only used for signing */
 118         size_t maxSigSize();
 119
 120 private:
 121
 122         /*
 123          * obtain key from context, validate, convert to DSA key
 124          */
 125         void keyFromContext(
 126                 const Context   &context);
 127
 128         DSA                                     *mDsaKey;
 129         bool                            mWeMallocdDsaKey;
 130         AppleCSPSession         &mSession;
 131 };
 132
 133
 134 #endif  /* _RSA_DSA_SIGNATURE_H_ */