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#define _WIN32_WINNT 0x0400
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#include <windows.h>
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#include <wincrypt.h>
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#include <tchar.h>
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// Helper class definition to generate and export Public/Private keys
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// for Asymmetric encryption. The semantics for usage are:
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// Call AcquireContext with a container name, call
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// GenerateKeyPair next and then call ExportPublicKey or
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// ExportPrivateKey.
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class CryptoHelper
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{
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private:
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HCRYPTPROV m_hCryptProv;
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public:
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HCRYPTKEY m_hCryptKey;
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CryptoHelper();
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~CryptoHelper();
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HRESULT AcquireContext(LPCTSTR wszContainerName);
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HRESULT GenerateKeyPair();
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HRESULT ExportPublicKey(BYTE **ppPublicKey, DWORD &cbKeySize);;
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HRESULT ExportPrivateKey(BYTE **ppPrivateKey, DWORD &cbKeySize);
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};
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