+++ /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.
- */
-
-
-//
-// SSContext.h - Security Server contexts
-//
-#ifndef _H_SS_CONTEXT
-#define _H_SS_CONTEXT
-
-#include <security_cdsa_plugin/CSPsession.h>
-#include <securityd_client/ssclient.h>
-#include <security_cdsa_utilities/digestobject.h>
-#include <security_cdsa_client/cspclient.h>
-
-//
-// Parent class for all CSPContexts implemented in this CSP. Currently the
-// only thing we add is a reference to our creator's session.
-//
-class SSCSPSession;
-class SSKey;
-
-class SSContext : public CSPFullPluginSession::CSPContext
-{
-public:
- SSContext(SSCSPSession &session);
- ~SSContext() { clearOutBuf(); }
- virtual void init(const Context &context, bool encoding);
-
-protected:
- SecurityServer::ClientSession &clientSession();
- SSCSPSession &mSession;
-
- // mOutBuf provides a holding tank for implied final() operations
- // resulting from an outputSize(true, 0). This form of outputSize()
- // is understood to only occur just prior to the final() call. To avoid
- // an extra RPC (just to perform the outputSize(), most subclasses of
- // SSContext actually perform the final() operation at this time,
- // storing the result in mOutBuf. At final(), mOutBuf() is just copied
- // to the caller's supplied output buffer.
- CssmData mOutBuf;
-
- // We remember a pointer to the passed in context and assume it will
- // remain a valid from init(), update() all the way though the call to
- // final().
- const Context *mContext;
-
- void clearOutBuf();
- void copyOutBuf(CssmData &out);
-};
-
-// context for signature (sign and verify)
-class SSSignatureContext : public SSContext
-{
-public:
- SSSignatureContext(SSCSPSession &session);
- ~SSSignatureContext();
- virtual void init(const Context &context, bool signing);
- virtual void update(const CssmData &data);
- virtual size_t outputSize(bool final, size_t inSize);
-
- /* sign */
- void sign(CssmData &sig);
- virtual void final(CssmData &out);
-
- /* verify */
- virtual void final(const CssmData &in);
-
- /* for raw sign/verify - optionally called after init */
- virtual void setDigestAlgorithm(CSSM_ALGORITHMS digestAlg);
-
-private:
- /* stash the context's key for final sign/verify */
- SecurityServer::KeyHandle mKeyHandle;
-
- /* alg-dependent, calculated at init time */
- CSSM_ALGORITHMS mSigAlg; // raw signature alg
- CSSM_ALGORITHMS mDigestAlg; // digest
-
- /* exactly one of these is used to collect updates */
- NullDigest *mNullDigest;
- CssmClient::Digest *mDigest;
-};
-
-// Context for GenerateRandom operations
-class SSRandomContext : public SSContext
-{
-public:
- SSRandomContext(SSCSPSession &session);
- virtual void init(const Context &context, bool);
- virtual size_t outputSize(bool final, size_t inSize);
- virtual void final(CssmData &out);
-
-private:
- uint32 mOutSize; // spec'd in context at init() time
-};
-
-// Context for Encrypt and Decrypt operations
-class SSCryptContext : public SSContext
-{
-public:
- SSCryptContext(SSCSPSession &session);
- ~SSCryptContext();
- virtual void init(const Context &context, bool encoding);
- virtual size_t inputSize(size_t outSize);
- virtual size_t outputSize(bool final, size_t inSize);
- virtual void minimumProgress(size_t &in, size_t &out);
- virtual void update(void *inp, size_t &inSize, void *outp,
- size_t &outSize);
- virtual void final(CssmData &out);
-
-private:
- SecurityServer::KeyHandle mKeyHandle;
- NullDigest mNullDigest; // accumulator
-};
-
-// Digest, using raw CSP
-class SSDigestContext : public SSContext
-{
-public:
- SSDigestContext(SSCSPSession &session);
- ~SSDigestContext();
- virtual void init(const Context &context, bool);
- virtual void update(const CssmData &data);
- virtual void final(CssmData &out);
- virtual size_t outputSize(bool final, size_t inSize);
-
-private:
- CssmClient::Digest *mDigest;
-};
-
-// common class for MAC generate, verify
-class SSMACContext : public SSContext
-{
-public:
- SSMACContext(SSCSPSession &session);
- virtual void init(const Context &context, bool);
- virtual void update(const CssmData &data);
- virtual size_t outputSize(bool final, size_t inSize);
-
- /* sign */
- void genMac(CssmData &mac);
- virtual void final(CssmData &out);
- /* verify */
- virtual void final(const CssmData &in);
-
-private:
- SecurityServer::KeyHandle mKeyHandle;
- NullDigest mNullDigest; // accumulator
-};
-
-
-#endif // _H_SS_CONTEXT
projects / apple / security.git / blobdiff