+++ /dev/null
-/*
- * 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.
- */
-
-
-/*
- * rc4Context.cpp - glue between AppleCSPContext and ssleay RC4 implementation
- * Written by Doug Mitchell 04/03/2001
- */
-
-#include "rc4Context.h"
-
-RC4Context::~RC4Context()
-{
- if (rc4Key != NULL) {
- CCCryptorRelease(rc4Key);
- }
- rc4Key = NULL;
-}
-
-/*
- * Standard CSPContext init, called from CSPFullPluginSession::init().
- * Reusable, e.g., query followed by en/decrypt.
- */
-void RC4Context::init(
- const Context &context,
- bool encrypting)
-{
- CSSM_SIZE keyLen;
- uint8 *keyData = NULL;
-
- /* obtain key from context */
- symmetricKeyBits(context, session(), CSSM_ALGID_RC4,
- encrypting ? CSSM_KEYUSE_ENCRYPT : CSSM_KEYUSE_DECRYPT,
- keyData, keyLen);
- if((keyLen < kCCKeySizeMinRC4) || (keyLen > kCCKeySizeMaxRC4)) {
- CssmError::throwMe(CSSMERR_CSP_INVALID_ATTR_KEY);
- }
-
- /* All other context attributes ignored */
- /* init the low-level state */
- (void) CCCryptorCreateWithMode(0, kCCModeRC4, kCCAlgorithmRC4, ccDefaultPadding, NULL, keyData, keyLen, NULL, 0, 0, 0, &rc4Key);
-
-}
-
-/*
- * All of these functions are called by CSPFullPluginSession.
- */
-void RC4Context::update(
- void *inp,
- size_t &inSize, // in/out
- void *outp,
- size_t &outSize) // in/out
-{
- (void) CCCryptorUpdate(rc4Key, inp, inSize, outp, inSize, &outSize);
-}
-
-/* remainding functions are trivial for any stream cipher */
-void RC4Context::final(
- CssmData &out)
-{
- out.length(0);
-}
-
-size_t RC4Context::inputSize(
- size_t outSize) // input for given output size
-{
- return outSize;
-}
-
-size_t RC4Context::outputSize(
- bool final /*= false*/,
- size_t inSize /*= 0*/) // output for given input size
-{
- return inSize;
-}
-
-void RC4Context::minimumProgress(
- size_t &in,
- size_t &out) // minimum progress chunks
-{
- in = 1;
- out = 1;
-}