Hi,

I'm in the Firefox OS Security team and I'm starting working on adding
support for stronger passwords in the Firefox OS lockscreen (bug 877541)
[1].
At the moment, only a 4-digit password can be configured and we want to
improve that for FxOS 1.4 (March 2014).

Some time ago, David Dahl provided on a patch for having hashing
functions in Gecko: it's a JSM living next to the SettingsManager for
FxOS [2]. Supported algorithms are sha256, sha384 and sha512.

But having a set of hashing functions that could be called from anywhere
would definitely be best.

My question is:

Could/should it be implemented in the Javascript crypto API? I am not
really familiar with the state of progress of that API. At the time it
was discussed, it wasn't conceivable.

Or is it better to keep it as a module in Gecko, as David started doing,
and build a kind of "mozHash" webAPI?


Thanks!

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=877541
[2] https://bug877541.bugzilla.mozilla.org/attachment.cgi?id=779450


Stéphanie
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