Security-57031.1.35.tar.gz

[apple/security.git] / libsecurity_apple_csp / lib / gladmanContext.cpp

diff --git a/libsecurity_apple_csp/lib/gladmanContext.cpp b/libsecurity_apple_csp/lib/gladmanContext.cpp
deleted file mode 100644 (file)
index 16fddca..0000000
--- a/libsecurity_apple_csp/lib/gladmanContext.cpp
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- * 
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-/*
- * gladmanContext.cpp - glue between BlockCryptor and Gladman AES implementation
- * Written by Doug Mitchell 12/12/2001
- */
- 
-#include "gladmanContext.h"
-#include "cspdebugging.h"
-#include <CommonCrypto/CommonCryptor.h>
-
-/*
- * AES encrypt/decrypt.
- */
-GAESContext::GAESContext(AppleCSPSession &session) : 
-    BlockCryptor(session),
-       mAesKey(NULL),
-       mInitFlag(false),
-       mRawKeySize(0),
-       mWasEncrypting(false)
-{ 
-       cbcCapable(false);
-       multiBlockCapable(false);
-}
-
-GAESContext::~GAESContext()
-{
-    if(mAesKey) {
-        CCCryptorFinal(mAesKey,NULL,0,NULL);
-        CCCryptorRelease(mAesKey);
-        mAesKey = NULL;
-    }
-    
-       deleteKey();
-       memset(mRawKey, 0, MAX_AES_KEY_BITS / 8);
-       mInitFlag = false;
-}
-       
-void GAESContext::deleteKey()
-{
-       mRawKeySize = 0;
-}
-
-/* 
- * Standard CSPContext init, called from CSPFullPluginSession::init().
- * Reusable, e.g., query followed by en/decrypt. Even reusable after context
- * changed (i.e., new IV in Encrypted File System). 
- */
-void GAESContext::init( 
-       const Context &context, 
-       bool encrypting)
-{
-       if(mInitFlag && !opStarted()) {
-               return;
-       }
-       
-       CSSM_SIZE       keyLen;
-       uint8           *keyData = NULL;
-       bool            sameKeySize = false;
-       
-       /* obtain key from context */
-       symmetricKeyBits(context, session(), CSSM_ALGID_AES, 
-               encrypting ? CSSM_KEYUSE_ENCRYPT : CSSM_KEYUSE_DECRYPT,
-               keyData, keyLen);
-       
-       switch(keyLen) {
-               case kCCKeySizeAES128:
-               case kCCKeySizeAES192:
-               case kCCKeySizeAES256:
-                       break;
-               default:
-                       CssmError::throwMe(CSSMERR_CSP_INVALID_ATTR_KEY);
-       }
-       
-       /*
-        * Delete existing key if key size changed
-        */
-       if(mRawKeySize == keyLen) {
-               sameKeySize = true;
-       }
-       else {
-               deleteKey();
-       }
-       
-       /* 
-        * Init key only if key size or key bits have changed, or 
-        * we're doing a different operation than the previous key
-        * was scheduled for.
-        */
-       if(!sameKeySize || (mWasEncrypting != encrypting) ||
-               memcmp(mRawKey, keyData, mRawKeySize)) {
-        (void) CCCryptorCreateWithMode(0, kCCModeECB, kCCAlgorithmAES128, ccDefaultPadding, NULL, keyData, keyLen, NULL, 0, 0, 0, &mAesKey);
-
-               /* save this raw key data */
-               memmove(mRawKey, keyData, keyLen); 
-               mRawKeySize = (uint32)keyLen;
-               mWasEncrypting = encrypting;
-       }
-
-       /* we handle CBC, and hence the IV, ourselves */
-       CSSM_ENCRYPT_MODE cssmMode = context.getInt(CSSM_ATTRIBUTE_MODE);
-    switch (cssmMode) {
-               /* no mode attr --> 0 == CSSM_ALGMODE_NONE, not currently supported */
-               case CSSM_ALGMODE_CBCPadIV8:
-               case CSSM_ALGMODE_CBC_IV8:
-               {
-                       CssmData *iv = context.get<CssmData>(CSSM_ATTRIBUTE_INIT_VECTOR);
-                       if(iv == NULL) {
-                               CssmError::throwMe(CSSMERR_CSP_MISSING_ATTR_INIT_VECTOR);
-                       }
-                       if(iv->Length != kCCBlockSizeAES128) {
-                               CssmError::throwMe(CSSMERR_CSP_INVALID_ATTR_INIT_VECTOR);
-                       }
-               }
-               break;
-               default:
-               break;
-       }
-       
-       /* Finally, have BlockCryptor do its setup */
-       setup(GLADMAN_BLOCK_SIZE_BYTES, context);
-       mInitFlag = true;
-}      
-
-/*
- * Functions called by BlockCryptor
- * FIXME make this multi-block capabl3e 
- */
-void GAESContext::encryptBlock(
-       const void              *plainText,                     // length implied (one block)
-       size_t                  plainTextLen,
-       void                    *cipherText,    
-       size_t                  &cipherTextLen,         // in/out, throws on overflow
-       bool                    final)                          // ignored
-{
-       if(cipherTextLen < plainTextLen) {
-               CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
-       }
-    (void) CCCryptorEncryptDataBlock(mAesKey, NULL, plainText, plainTextLen, cipherText);
-
-       cipherTextLen = plainTextLen;
-}
-
-void GAESContext::decryptBlock(
-       const void              *cipherText,            // length implied (one cipher block)
-       size_t                  cipherTextLen,  
-       void                    *plainText,     
-       size_t                  &plainTextLen,          // in/out, throws on overflow
-       bool                    final)                          // ignored
-{
-       if(plainTextLen < cipherTextLen) {
-               CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
-       }
-    (void) CCCryptorDecryptDataBlock(mAesKey, NULL, cipherText, cipherTextLen, plainText);
-       plainTextLen = cipherTextLen;
-}
-