projects / apple / security.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ab9ed8 | 1 | /* |
| d8f41ccd | 2 | * Copyright (c) 2003,2011-2012,2014 Apple Inc. All Rights Reserved. |
| b1ab9ed8 A |
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 | |
| 7 | * obtain a copy of the License at http://www.apple.com/publicsource and | |
| 8 | * read it before 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 | |
| 12 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 13 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 15 | * Please see the License for the specific language governing rights and | |
| 16 | * limitations under the License. | |
| 17 | */ | |
| 18 | /* | |
| 19 | * AppleCSPKeys.cpp - Key support | |
| 20 | */ | |
| 21 | ||
| 22 | #include "AppleCSPKeys.h" | |
| 23 | #include "AppleCSPUtils.h" | |
| 24 | /* | |
| 25 | * CSPKeyInfoProvider for symmetric keys. | |
| 26 | */ | |
| 27 | CSPKeyInfoProvider *SymmetricKeyInfoProvider::provider( | |
| 28 | const CssmKey &cssmKey, | |
| 29 | AppleCSPSession &session) | |
| 30 | { | |
| 31 | if(cssmKey.blobType() != CSSM_KEYBLOB_RAW) { | |
| 32 | errorLog0("KeyInfoProvider deals only with RAW keys!\n"); | |
| 33 | CssmError::throwMe(CSSMERR_CSP_INTERNAL_ERROR); | |
| 34 | } | |
| 35 | if(cssmKey.keyClass() != CSSM_KEYCLASS_SESSION_KEY) { | |
| 36 | /* that's all we need to know */ | |
| 37 | return NULL; | |
| 38 | } | |
| 39 | return new SymmetricKeyInfoProvider(cssmKey, session); | |
| 40 | } | |
| 41 | ||
| 42 | SymmetricKeyInfoProvider::SymmetricKeyInfoProvider( | |
| 43 | const CssmKey &cssmKey, | |
| 44 | AppleCSPSession &session) : | |
| 45 | CSPKeyInfoProvider(cssmKey, session) | |
| 46 | { | |
| 47 | } | |
| 48 | ||
| 49 | /* cook up a Binary key */ | |
| 50 | void SymmetricKeyInfoProvider::CssmKeyToBinary( | |
| 51 | CssmKey *paramKey, // ignored | |
| 52 | CSSM_KEYATTR_FLAGS &attrFlags, // IN/OUT | |
| 53 | BinaryKey **binKey) | |
| 54 | { | |
| 55 | CASSERT(mKey.keyClass() == CSSM_KEYCLASS_SESSION_KEY); | |
| 56 | SymmetricBinaryKey *symBinKey = new SymmetricBinaryKey( | |
| 57 | mKey.KeyHeader.LogicalKeySizeInBits); | |
| 58 | copyCssmData(mKey, | |
| 59 | symBinKey->mKeyData, | |
| 60 | symBinKey->mAllocator); | |
| 61 | *binKey = symBinKey; | |
| 62 | } | |
| 63 | ||
| 64 | /* obtain key size in bits */ | |
| 65 | void SymmetricKeyInfoProvider::QueryKeySizeInBits( | |
| 66 | CSSM_KEY_SIZE &keySize) | |
| 67 | { | |
| 68 | /* FIXME - do we ever need to calculate RC2 effective size here? */ | |
| 69 | keySize.LogicalKeySizeInBits = keySize.EffectiveKeySizeInBits = | |
| 427c49bc | 70 | (uint32)(mKey.length() * 8); |
| b1ab9ed8 A |
71 | } |
| 72 | ||
| 73 | /* | |
| 74 | * Obtain blob suitable for hashing in CSSM_APPLECSP_KEYDIGEST | |
| 75 | * passthrough. | |
| 76 | */ | |
| 77 | bool SymmetricKeyInfoProvider::getHashableBlob( | |
| 78 | Allocator &allocator, | |
| 79 | CssmData &blob) // blob to hash goes here | |
| 80 | { | |
| 81 | /* | |
| 82 | * This is trivial: the raw key is already in the "proper" format. | |
| 83 | */ | |
| 84 | assert(mKey.blobType() == CSSM_KEYBLOB_RAW); | |
| 85 | const CssmData &keyBlob = CssmData::overlay(mKey.KeyData); | |
| 86 | copyCssmData(keyBlob, blob, allocator); | |
| 87 | return true; | |
| 88 | } | |
| 89 |