projects / apple / security.git / blame
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1 | /* |
| 2 | * Copyright (c) 2000-2001,2003-2006,2013 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 | ||
| 25 | // | |
| 26 | // dbcrypto - cryptographic core for database and key blob cryptography | |
| 27 | // | |
| 28 | #ifndef _H_DBCRYPTO | |
| 29 | #define _H_DBCRYPTO | |
| 30 | ||
| 31 | #include <securityd_client/ssblob.h> | |
| 32 | #include <security_cdsa_client/cspclient.h> | |
| 33 | #include <security_cdsa_client/keyclient.h> | |
| 34 | ||
| 35 | using namespace SecurityServer; | |
| 36 | ||
| 37 | ||
| 38 | // | |
| 39 | // A DatabaseCryptoCore object encapsulates the secret state of a database. | |
| 40 | // It provides for encoding and decoding of database blobs and key blobs, | |
| 41 | // and holds all state related to the database secrets. | |
| 42 | // | |
| 43 | class DatabaseCryptoCore { | |
| 44 | public: | |
| 45 | DatabaseCryptoCore(); | |
| 46 | virtual ~DatabaseCryptoCore(); | |
| 47 | ||
| 48 | bool isValid() const { return mIsValid; } | |
| 49 | bool hasMaster() const { return mHaveMaster; } | |
| 50 | void invalidate(); | |
| 51 | ||
| 52 | void generateNewSecrets(); | |
| 53 | CssmClient::Key masterKey(); | |
| 54 | ||
| 55 | void setup(const DbBlob *blob, const CssmData &passphrase); | |
| 56 | void setup(const DbBlob *blob, CssmClient::Key master); | |
| 57 | ||
| 58 | void decodeCore(const DbBlob *blob, void **privateAclBlob = NULL); | |
| 59 | DbBlob *encodeCore(const DbBlob &blobTemplate, | |
| 60 | const CssmData &publicAcl, const CssmData &privateAcl) const; | |
| 61 | void importSecrets(const DatabaseCryptoCore &src); | |
| 62 | ||
| 63 | KeyBlob *encodeKeyCore(const CssmKey &key, | |
| 64 | const CssmData &publicAcl, const CssmData &privateAcl, | |
| 65 | bool inTheClear) const; | |
| 66 | void decodeKeyCore(KeyBlob *blob, | |
| 67 | CssmKey &key, void * &pubAcl, void * &privAcl) const; | |
| 68 | ||
| 69 | static const uint32 managedAttributes = KeyBlob::managedAttributes; | |
| 70 | static const uint32 forcedAttributes = KeyBlob::forcedAttributes; | |
| 71 | ||
| 72 | bool get_encryption_key(CssmOwnedData &data); | |
| 73 | ||
| 74 | public: | |
| 75 | bool validatePassphrase(const CssmData &passphrase); | |
| 76 | ||
| 77 | private: | |
| 78 | bool mHaveMaster; // master key has been entered (setup) | |
| 79 | bool mIsValid; // master secrets are valid (decode or generateNew) | |
| 80 | ||
| 81 | CssmClient::Key mMasterKey; // database master key | |
| 82 | uint8 mSalt[20]; // salt for master key derivation from passphrase (only) | |
| 83 | ||
| 84 | CssmClient::Key mEncryptionKey; // master encryption key | |
| 85 | CssmClient::Key mSigningKey; // master signing key | |
| 86 | ||
| 87 | CssmClient::Key deriveDbMasterKey(const CssmData &passphrase) const; | |
| 88 | CssmClient::Key makeRawKey(void *data, size_t length, | |
| 89 | CSSM_ALGORITHMS algid, CSSM_KEYUSE usage); | |
| 90 | }; | |
| 91 | ||
| 92 | ||
| 93 | #endif //_H_DBCRYPTO |