147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
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// KeyContext.h -- Key Context class declaration
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 1999. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#if !defined(SLBCSP_KEYCONTEXT_H)
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#define SLBCSP_KEYCONTEXT_H
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#include <memory> // for auto_ptr
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#include <wincrypt.h>
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#include <winscard.h>
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#include <handles.h>
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#include "AlignedBlob.h"
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#include "RsaKey.h"
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#define KT_UNDEFINED static_cast<DWORD>(0x00000000)
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#define KT_PUBLICKEY static_cast<DWORD>(PUBLICKEYBLOB)
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#define KT_SESSIONKEY static_cast<DWORD>(SIMPLEBLOB)
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class CKeyContext
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: public CHandle
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{
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public:
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// Types
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typedef RsaKey::StrengthType StrengthType;
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enum
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{
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Symmetric,
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RsaKeyPair
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} KeyClass;
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// C'tors/D'tors
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virtual
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~CKeyContext();
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// Operators
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// Operations
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virtual std::auto_ptr<CKeyContext>
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Clone(DWORD const *pdwReserved,
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DWORD dwFlags) const = 0;
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virtual void
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Close();
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virtual void
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Decrypt(HCRYPTHASH hAuxHash,
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BOOL fFinal,
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DWORD dwFlags,
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BYTE *pbData,
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DWORD *pdwDataLen);
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virtual void
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Encrypt(HCRYPTHASH hAuxHash,
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BOOL fFinal,
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DWORD dwFlags,
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BYTE *pbData,
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DWORD *pdwDataLen,
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DWORD dwBufLen);
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virtual void
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Generate(ALG_ID AlgoId,
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DWORD dwFlags) = 0;
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virtual void
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ImportToAuxCSP() = 0;
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// Access
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virtual AlignedBlob
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AsAlignedBlob(HCRYPTKEY hcryptkey,
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DWORD dwBlobType) const = 0;
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HCRYPTKEY
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GetKey() const;
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virtual HCRYPTKEY
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KeyHandleInAuxCSP();
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virtual StrengthType
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MaxStrength() const = 0;
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virtual StrengthType
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MinStrength() const = 0;
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virtual DWORD
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TypeOfKey() const;
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// Predicates
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protected:
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// Types
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// C'tors/D'tors
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CKeyContext(HCRYPTPROV hProv,
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DWORD dwTypeOfKey = KT_UNDEFINED);
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// Duplicate the key and its state
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CKeyContext(CKeyContext const &rhs,
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DWORD const *pdwReserved,
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DWORD dwFlags);
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// Operators
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// Operations
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// Access
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HCRYPTPROV
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AuxProvider() const;
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// Predicates
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// Variables
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HCRYPTKEY m_hKey;
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std::auto_ptr<AlignedBlob> m_apabKey;
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private:
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// Types
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// C'tors/D'tors
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// not defined, copying not allowed
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CKeyContext(CKeyContext const &rkctx);
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// Operators
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// not defined, initializing not allowed
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CKeyContext &
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operator=(CKeyContext const &rkctx);
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// Operations
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// Access
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// Predicates
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// Variables
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DWORD const m_dwTypeOfKey;
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HCRYPTPROV const m_hAuxProvider;
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};
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#endif // SLBCSP_KEYCONTEXT_H
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