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* Update RandomBlock to use RandomAccessFile. This helpsNick Kralevich2009-06-181-7/+17
| | | | | | prevent certain unusual conditions from corrupting the entropy file. (for example, if Android should happen to crash while a write is in progress)
* load entropy data at boot. Periodically write entropy data to disk.Nick Kralevich2009-06-181-0/+90