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32 lines
695 B
C++
32 lines
695 B
C++
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std::string DH_der_gen(int iKeyLength)
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{
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DH* dh = 0;
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int iCodes;
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std::string strDer;
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do {
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dh = DH_generate_parameters(iKeyLength, DH_GENERATOR_5, NULL, NULL);
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iCodes = 0;
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DH_check(dh, &iCodes);
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} while (iCodes & (DH_CHECK_P_NOT_PRIME|DH_CHECK_P_NOT_SAFE_PRIME|DH_UNABLE_TO_CHECK_GENERATOR|DH_NOT_SUITABLE_GENERATOR));
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strDer.resize(i2d_DHparams(dh, NULL));
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unsigned char* next = reinterpret_cast<unsigned char *>(&strDer[0]);
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(void) i2d_DHparams(dh, &next);
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return strDer;
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}
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DH* DH_der_load(const std::string& strDer)
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{
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const unsigned char *pbuf = reinterpret_cast<const unsigned char *>(&strDer[0]);
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return d2i_DHparams(NULL, &pbuf, strDer.size());
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}
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// vim:ts=4
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