So after more digging, I've discovered that the library actually just runs much slower when used in my Android app. Testing it as a standalone algorithm, jbcrypt hashes several strings per second, but under the same conditions within the app its takes close to 6 minutes to run! There is a paramater that I can tweak that controls the number of rounds of hashing to apply - the work factor increases exponentially as 2**log_rounds. If I push this value to its lowest limit, the hashing happens within 5 seconds or so. Still not ideal, but possibly acceptable.
I'm wondering if anybody has any ideas why this type of performance difference exists in the execution of the same piece of code. What types of limitions does Android place on memory/CPU that is available to apps? I believe I might be able to move forward with what I have now, but I would still like to better understand what is causing the issue. Thanks, SImon On Jun 13, 3:24 pm, Mark Murphy <mmur...@commonsware.com> wrote: > On Mon, Jun 13, 2011 at 3:10 PM, Simon <simon.wilkin...@gmail.com> wrote: > > I have. Its within the 'private byte[] crypt_raw(byte password[], > > byte salt[], int log_rounds)' method, within the for loop where > > key(password) and key(salt) are being called. It never gets past this > > loop. > > Well, I don't know anything about their code. Perhaps they are > tripping over some subtle difference between Dalvik and a standard > Java VM. However, if you can get this far, you should be able to work > with the library's authors to try to figure out why you're in a > (presumably) infinite loop. > > Perhaps somebody else has already done this and will chime in on the thread. > > -- > Mark Murphy (a Commons > Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy > > Warescription: Three Android Books, Plus Updates, One Low Price! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en