OSX/libsecurity_keychain/lib/SecImportExportCrypto.h

   1 /*
   2  * Copyright (c) 2000-2004,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * SecImportExportCrypto.h - low-level crypto routines for wrapping and unwrapping
  25  *                                                       keys.
  26  */
  27
  28
  29 #ifndef _SECURITY_SEC_IMPORT_EXPORT_CRYPTO_H_
  30 #define _SECURITY_SEC_IMPORT_EXPORT_CRYPTO_H_
  31
  32 #include <Security/cssmtype.h>
  33 #include <Security/SecAccess.h>
  34 #include <Security/SecKeychain.h>
  35 #include <Security/SecImportExport.h>
  36 #include <CoreFoundation/CoreFoundation.h>
  37 #include <security_cdsa_utilities/cssmdata.h>
  38 #include <stdint.h>
  39
  40 #ifdef  __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 /*
  45  * Post notification of a "new key added" event.
  46  * If you know of another way to do this, other than a dlclient-based lookup of the
  47  * existing key in order to get a KeychainCore::Item, by all means have at it.
  48  */
  49 OSStatus impExpKeyNotify(
  50         SecKeychainRef  importKeychain,
  51         const CssmData  &keyLabel,              // stored with this, we use it to do a lookup
  52         const CSSM_KEY  &cssmKey);              // unwrapped key in CSSM format
  53
  54 /*
  55  * Attempt to import a raw key. This can be used as a lightweight
  56  * "guess" evaluator if a handle to the raw CSP is passed in (with
  57  * no keychaain), or as the real thing which does full keychain import.
  58  */
  59 OSStatus impExpImportRawKey(
  60         CFDataRef                                                       inData,
  61         SecExternalFormat                                       externForm,
  62         SecExternalItemType                                     itemType,
  63         CSSM_ALGORITHMS                                         keyAlg,
  64         SecKeychainRef                                          importKeychain, // optional
  65         CSSM_CSP_HANDLE                                         cspHand,                // optional
  66         SecItemImportExportFlags                        flags,
  67         const SecKeyImportExportParameters      *keyParams,             // optional
  68         const char                                                      *printName,             // optional
  69         CFMutableArrayRef                                       outArray);              // optional, append here
  70
  71 /*
  72  * Auxiliary encryption parameters associated with a key unwrap.
  73  * Most of these are usually zero (meaning "tell the CSP to take the default").
  74  */
  75 typedef struct {
  76         CSSM_ALGORITHMS                 encrAlg;                // 0 ==> null unwrap
  77         CSSM_ENCRYPT_MODE               encrMode;
  78         CSSM_KEY_PTR                    unwrappingKey;  // NULL ==> null unwrap
  79         CSSM_PADDING                    encrPad;
  80         CSSM_DATA                               iv;
  81
  82         /* weird RC2/RC5 params */
  83         uint32                                  effectiveKeySizeInBits; // RC2
  84         uint32                                  blockSizeInBits;                // RC5
  85         uint32                                  rounds;                                 // RC5
  86 } impExpKeyUnwrapParams;
  87
  88 /*
  89  * Common code to unwrap a key, used for raw keys (which do a NULL unwrap) and
  90  * wrapped keys.
  91  */
  92 OSStatus impExpImportKeyCommon(
  93         const CSSM_KEY                                  *wrappedKey,
  94         SecKeychainRef                                  importKeychain, // optional
  95         CSSM_CSP_HANDLE                                 cspHand,                // optional
  96         SecItemImportExportFlags                flags,
  97         const SecKeyImportExportParameters *keyParams,  // optional
  98         const impExpKeyUnwrapParams             *unwrapParams,
  99         const char                                              *printName,             // optional
 100         CFMutableArrayRef                               outArray);              // optional, append here
 101
 102 /*
 103  * Common code to wrap a key. NULL unwraps don't use this (yet?).
 104  */
 105 CSSM_RETURN impExpExportKeyCommon(
 106         CSSM_CSP_HANDLE         cspHand,                // for all three keys
 107         SecKeyRef                       secKey,
 108         CSSM_KEY_PTR            wrappingKey,
 109         CSSM_KEY_PTR            wrappedKey,             // RETURNED
 110         CSSM_ALGORITHMS         wrapAlg,
 111         CSSM_ENCRYPT_MODE   wrapMode,
 112         CSSM_PADDING            wrapPad,
 113         CSSM_KEYBLOB_FORMAT     wrapFormat,             // NONE, PKCS7, PKCS8
 114         CSSM_ATTRIBUTE_TYPE blobAttrType,       // optional raw key format attr
 115         CSSM_KEYBLOB_FORMAT blobForm,           // ditto
 116         const CSSM_DATA         *descData,              // optional descriptive data
 117         const CSSM_DATA         *iv);
 118
 119 #ifdef  __cplusplus
 120 }
 121 #endif
 122
 123 #endif  /* _SECURITY_SEC_IMPORT_EXPORT_CRYPTO_H_ */