Using Crypto APIs from Add-on (in Javascript)

[Dominik-20]

Hi all,

I am developing a JavaScript-based Firefox add-on which could make use
of cryptography primitives like encrypting/decrypting short strings
with RSA/AES.

A pure JS implementation of those algorithms is way to slow. I have
come across the NSS library which seems to be part of the default
Firefox distributions. Is it possible to access its API (e.g. via
XPCOM) from my JavaScript extension code?

Best regards,
Dominik
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[Kai Engert-4]

Dominik schrieb:
> I am developing a JavaScript-based Firefox add-on which could make use
> of cryptography primitives like encrypting/decrypting short strings
> with RSA/AES.
>
> A pure JS implementation of those algorithms is way to slow. I have
> come across the NSS library which seems to be part of the default
> Firefox distributions. Is it possible to access its API (e.g. via
> XPCOM) from my JavaScript extension code?
>  

 From JS you can only access the subset of NSS that has been wrapped in
XPCOM interfaces. Most of the IDL files are below mozilla/security/manager
I fear there is nothing that can be used directly for encryption.
However, you might want to ping the Mozilla labs people who work on the
Weave project, I think they have faced similar challenges. Maybe you can
look at their code to get ideas. Or ask on irc.mozilla.org channel #labs

Kai



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[Justin Dolske-2]

Kai Engert wrote:

> However, you might want to ping the Mozilla labs people who work on the
> Weave project, I think they have faced similar challenges. Maybe you can
> look at their code to get ideas.

That would be: http://hg.mozilla.org/labs/weave/file/53e25c0c7e2e/src/

It's not a general-purpose crypto API, as it's tailored for Weave's usecase.

Justin
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