Re: [OpenCoin-devel] Fwd: [GSoC-2015] OpenCoin Digital Cash App

[Nils T. <ni...@op...>]

Hi Tom!

I vaguely remember - but i might be wrong - that there is an important
crypto primitive missing, and that is blinding/unblinding. And
unfortunatly the API is only exposing crypto primitives, but not the
underlying BigInt library, so you have to do it outside JS - which is
pretty slow.

I think i even had conversations with the webcrypto gang about this.
Will try to find it when i have more time.

/n


On 01.04.2015 13:15, Tom Salfield wrote:
> Hi Stefan,
> 
> On 15/03/15 21:41, Stefan Xenon wrote:
>> A while ago we did some tests and found that native JS may be
>> problematic because it is very slow for some of our crypto operations.
>> We concluded that a native "module" would be a good choice when using
>> Phonegap. This module would be native platform code (e.g. Java for
>> Android) and perform the crypto calculation. Do you have experience in
>> using such?
> Out of interest what were the performance problems in doing this using
> browser crypto? I'd have thought that with faster browsers, and built in
> random number generation this should perform quite well by now. In
> firefox and chrome and probably IE12 there is asm.js support - making
> implementations potentially significantly faster:
> 
> https://github.com/vibornoff/asmcrypto.js/tree/master/src
> 
> Anyway, just interested to know where the bottleneck would be?
> 
> Thanks,
> 
> Tom
> 
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