StructResult result;
    HCRYPTPROV provider;
    DWORD dwBlobLenSimple;
    BYTE *pbKeyBlobSimple = NULL;
    
    if (!CryptAcquireContext(&provider, 0, NULL, PROV_GOST_2012_256, CRYPT_VERIFYCONTEXT)) {
        result.error = true;        
    }
    
    HCRYPTKEY key;
    if (!CryptGenKey(provider, CALG_GR3412_2015_K, CRYPT_EXPORTABLE, &key)) {
        CryptReleaseContext(provider, 0);
        result.error = true;       
    }
    
    if(!CryptExportKey(key, 0, PLAINTEXTKEYBLOB, 0, NULL, &dwBlobLenSimple)) {
        result.error = true;
    }
    
    pbKeyBlobSimple = (BYTE*)malloc(dwBlobLenSimple);
    
    if(!CryptExportKey(key, 0, PLAINTEXTKEYBLOB, 0, pbKeyBlobSimple, &dwBlobLenSimple)) {
        result.error = true;        
    }