+++ /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.
- */
-
-
-/*
- * desContext.cpp - glue between BlockCrytpor and DES implementation
- * Written by Doug Mitchell 3/28/2001
- */
-
-#include "desContext.h"
-#include <security_utilities/debugging.h>
-#include <security_utilities/globalizer.h>
-#include <security_utilities/threading.h>
-
-#define DESDebug(args...) secdebug("desContext", ## args)
-
-/*
- * DES encrypt/decrypt.
- */
-DESContext::DESContext(AppleCSPSession &session) : BlockCryptor(session), DesInst(NULL)
-{
-}
-
-DESContext::~DESContext()
-{
- if (DesInst != NULL) {
- CCCryptorRelease(DesInst);
- }
-
- DesInst = NULL;
-}
-
-/*
- * Standard CSPContext init, called from CSPFullPluginSession::init().
- * Reusable, e.g., query followed by en/decrypt.
- */
-void DESContext::init(
- const Context &context,
- bool encrypting)
-{
- CSSM_SIZE keyLen;
- uint8 *keyData = NULL;
-
- /* obtain key from context */
- symmetricKeyBits(context, session(), CSSM_ALGID_DES,
- encrypting ? CSSM_KEYUSE_ENCRYPT : CSSM_KEYUSE_DECRYPT,
- keyData, keyLen);
- if(keyLen != (DES_KEY_SIZE_BITS_EXTERNAL / 8)) {
- CssmError::throwMe(CSSMERR_CSP_INVALID_ATTR_KEY);
- }
-
- if (DesInst != NULL)
- {
- CCCryptorRelease(DesInst);
- }
-
- (void) CCCryptorCreateWithMode(0, kCCModeECB, kCCAlgorithmDES, ccDefaultPadding, NULL, keyData, kCCKeySizeDES, NULL, 0, 0, 0, &DesInst);
-
- /* Finally, have BlockCryptor do its setup */
- setup(DES_BLOCK_SIZE_BYTES, context);
-}
-
-/*
- * Functions called by BlockCryptor
- * DES does encrypt/decrypt in place
- */
-void DESContext::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(plainTextLen != DES_BLOCK_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_INPUT_LENGTH_ERROR);
- }
- if(cipherTextLen < DES_BLOCK_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
- }
- (void) CCCryptorEncryptDataBlock(DesInst, NULL, plainText, DES_BLOCK_SIZE_BYTES, cipherText);
- cipherTextLen = DES_BLOCK_SIZE_BYTES;
-}
-
-void DESContext::decryptBlock(
- const void *cipherText, // length implied (one block)
- size_t cipherTextLen,
- void *plainText,
- size_t &plainTextLen, // in/out, throws on overflow
- bool final) // ignored
-{
- if(plainTextLen < DES_BLOCK_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
- }
- if(plainText != cipherText) {
- /* little optimization for callers who want to decrypt in place */
- memmove(plainText, cipherText, DES_BLOCK_SIZE_BYTES);
- }
- (void) CCCryptorDecryptDataBlock(DesInst, NULL, cipherText, DES_BLOCK_SIZE_BYTES, plainText);
- plainTextLen = DES_BLOCK_SIZE_BYTES;
-}
-
-/***
- *** Triple-DES - EDE, 24-bit key only
- ***/
-
-DES3Context::DES3Context(AppleCSPSession &session) : BlockCryptor(session), DesInst(NULL)
-{
-}
-
-
-
-DES3Context::~DES3Context()
-{
- if (DesInst != NULL) {
- CCCryptorRelease(DesInst);
- }
-
- DesInst = NULL;
-}
-
-/*
- * Standard CSPContext init, called from CSPFullPluginSession::init().
- * Reusable, e.g., query followed by en/decrypt.
- */
-void DES3Context::init(
- const Context &context,
- bool encrypting)
-{
- CSSM_SIZE keyLen;
- uint8 *keyData = NULL;
-
- /* obtain key from context */
- symmetricKeyBits(context, session(), CSSM_ALGID_3DES_3KEY_EDE,
- encrypting ? CSSM_KEYUSE_ENCRYPT : CSSM_KEYUSE_DECRYPT,
- keyData, keyLen);
- if(keyLen != DES3_KEY_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_INVALID_ATTR_KEY);
- }
-
- if (DesInst != NULL) {
- CCCryptorRelease(DesInst);
- }
-
- (void) CCCryptorCreateWithMode(0, kCCModeECB, kCCAlgorithm3DES, ccDefaultPadding, NULL, keyData, kCCKeySize3DES, NULL, 0, 0, 0, &DesInst);
-
- /* Finally, have BlockCryptor do its setup */
- setup(DES3_BLOCK_SIZE_BYTES, context);
-}
-
-/*
- * Functions called by BlockCryptor
- * DES does encrypt/decrypt in place
- */
-void DES3Context::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(plainTextLen != DES3_BLOCK_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_INPUT_LENGTH_ERROR);
- }
- if(cipherTextLen < DES3_BLOCK_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
- }
- (void) CCCryptorEncryptDataBlock(DesInst, NULL, plainText, DES3_BLOCK_SIZE_BYTES, cipherText);
- cipherTextLen = DES3_BLOCK_SIZE_BYTES;
-}
-
-void DES3Context::decryptBlock(
- const void *cipherText, // length implied (one block)
- size_t cipherTextLen,
- void *plainText,
- size_t &plainTextLen, // in/out, throws on overflow
- bool final) // ignored
-{
- if(plainTextLen < DES3_BLOCK_SIZE_BYTES) {
- CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
- }
- (void) CCCryptorDecryptDataBlock(DesInst, NULL, cipherText, DES3_BLOCK_SIZE_BYTES, plainText);
- plainTextLen = DES3_BLOCK_SIZE_BYTES;
-}
projects / apple / security.git / blobdiff