RW_SECSOCK_SEEDRNGFROMSCREEN

Module:  Secure Communication Module   Package:  Secure Sockets

Global Macro

• Local Index
• Description

This macro is defined automatically on Windows when the Secure Sockets package determines that your application can seed the random number generator from screen data. This means that your application can call the constructor

RWSecureSocketPackageInit(WindowsSeedScreen, ErrorStringsFlag)

and the function

RWSecureSocketPackageInit::seedRNGFromScreen().

When you use this seeding functionality in your applications, wrap it in RW_SECSOCK_SEEDRNGFROMSCREEN for maximum portability.

If an application must seed the RNG, programs compiled for MS Windows will use screen data, and other platforms will use the file seeddata.dat. The following code block outlines the previously mentioned example:

#if defined (RW_SECSOCK_RNG_NEEDS_SEEDING)
   #if defined (RW_SECSOCK_SEEDRNGFROMSCREEN)
     RWSecureSocketPackageInit::seedRNGFromScreen();
   #else         
     RWSecureSocketPackageInit::seedRNGFromFile("seeddata.dat");
   #endif
#endif

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