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Diffstat (limited to 'include/qpdf/QUtil.hh')
| -rw-r--r-- | include/qpdf/QUtil.hh | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/qpdf/QUtil.hh b/include/qpdf/QUtil.hh index cbdc065c..f61fa844 100644 --- a/include/qpdf/QUtil.hh +++ b/include/qpdf/QUtil.hh @@ -15,6 +15,8 @@ #include <stdexcept> #include <stdio.h> +class RandomDataProvider; + namespace QUtil { // This is a collection of useful utility functions that don't @@ -123,8 +125,26 @@ namespace QUtil QPDF_DLL void srandom(unsigned int seed); + // Initialize a buffer with random bytes. By default, qpdf tries + // to use a secure random number source. It can be configured at + // compile time to use an insecure random number source (from + // stdlib). You can also call setRandomDataProvider with a + // RandomDataProvider, in which case this method will get its + // random bytes from that. + QPDF_DLL void initializeWithRandomBytes(unsigned char* data, size_t len); + + // Supply a random data provider. If not supplied, depending on + // compile time options, qpdf will either use the operating + // system's secure random number source or an insecure random + // source from stdlib. The caller is responsible for managing the + // memory for the RandomDataProvider. This method modifies a + // static variable. If you are providing your own random data + // provider, you should call this at the beginning of your program + // before creating any QPDF objects. + QPDF_DLL + void setRandomDataProvider(RandomDataProvider*); }; #endif // __QUTIL_HH__ |