#ifndef CRYPTPHELPER_H_
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#define CRYPTPHELPER_H_
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#include <memory>
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#include <cstddef>
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#include <string>
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namespace license {
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using namespace std;
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/**
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* Helper class definition to generate and export Public/Private keys
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* for Asymmetric encryption.
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*
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* <p>Since this part relies heavily on operating system libraries this class
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* provides a common facade to the cryptographic functions. The two implementing
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* subclasses are chosen in the factory method #getInstance(). This is to avoid
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* to clutter the code with many "ifdef". (extreme performance is not an issue here)</p>
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*<p> *it is shared by bootstrap and license-generator projects.</p>
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*/
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class CryptoHelper {
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protected:
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inline CryptoHelper(){};
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public:
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virtual void generateKeyPair() = 0;
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virtual const string exportPrivateKey() const = 0;
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virtual const string exportPublicKey() const = 0;
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virtual const string signString(const void* privateKey,
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size_t pklen, const string& license) const = 0;
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static unique_ptr<CryptoHelper> getInstance();
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inline virtual ~CryptoHelper(){};
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};
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}
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#endif
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