Freenet 0.7.5 build 1416

Freenet 0.7.5 build 1416 is now available. Please upgrade, it will be mandatory in two weeks. The sole change in this build is a new encryption format for CHKs, which significantly improves security, in particular it makes it harder to identify that CHKs belong to the same splitfile. The code is fully backwards compatible, and you can even insert old-format keys with CompatibilityMode, but by default new inserts will use the new format. 

1416 will use Java's built in encryption JCA (or some faster provider you have installed) if available, but unfortunately this is usually broken in Sun/Oracle Java 1.6 due to export restrictions (you can fix it by installing the unlimited strength policy files). I believe Oracle 1.7 fixes this problem, but I'm not sure; OpenJDK appears to work fine, so you may want to upgrade to OpenJDK. In any case, we have built-in encryption for when the JCA doesn't work (but we'd like to get rid of it eventually, at least in the code handling new format CHKs). If you have a modern CPU and 64-bit Linux you can install NSS/JSS as a provider to reduce Freenet's CPU usage, but don't ask me how.

Thanks!

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