IPFS Berlin Developers Meetings - July 2018, 9 Jul 2018

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From YouTube: Lightning Demos - PEERGOS - Dr. Ian Preston

Description

Originally recorded during the Berlin Developers Meetings from July 9-13, 2018.

@Peergos - e2e encrypted p2p social network demo

A

Parris, oh I was hoping this would be after my talk, in which case you'd have a bit more context but long story short Pegasus is an end-to-end encrypted file, storage and social network on my PFS, so I'm just going to demo a few basic things. So, let's start with signing up.

A

Obviously, that's not a secure password, but that doesn't matter today.

A

All right, so we signed up, we have an account, let's create another one.

A

Rightio so now, let's see something social, so let's send a follower quest to the other guy.

A

And what this is doing is basically sending a cryptographic capability to a part in this users file system through which we can then share stuff with the other one follow Chris down, and now we go back to the other guy.

A

Look, we've got one if we had logged out and logged in. We also would have got this little plus one thing but yeah. Let's, uh let's allow that for now.

A

Cool so now we're bidirectional following so we're both friends with each other. Now so the yeah, the high level each user gets their own storage space under their username in the global namespace, so test 18. We go back up here, I'm just actually doing this.

A

That's just registered that we're friends from the other guy, so currently there's nothing in there. If we go up to the top, we can now see the other guy. They haven't shared anything with us yet, but let's do something with a file. So let's upload an image.

A

So this is all SSA its end-to-end encrypted, so all the encryption happens and decryption happens in the browser and let's share this.

A

Share this is 17.

A

Right yo, so now we go back to 17 and we need to refresh the roots. So we can see the other guy but yep. Now you going to do T, no look. We can see the file. We can see the thumbnail which is everything's encrypted. We we hide all the metadata and stuff. We can view that directly in the browser.

A

That's the solution: you can tell I have a young kid, that's not by the way. So what a screen do we can get so this make some directories actually, no, let's do a public link. So this thing we can also create a public link which you can share with anyone. They don't need a big loss account and basically the cryptographic capabilities are in the URL itself, using the usual technique, which is putting it in the hash. So you can open that in another tab and there's no context shared between these tabs.

A

So you can see that that's now there we can see. That's you get the path and the file itself and the same idea. We can. We can view that or download it or whatever.

A

Yes, so the other thing you can do is directories. Let's make a directory.

A

Going here at a file.

A

Five minutes: okay, all right running out of time, so I'm going to skip to hopefully more impressive demo. So this is another account.

A

And for one we're downloading and decrypting stuff in the browser, if you're trying to say it's an image, that's easy! It's generally pretty small, so you just make one big byte array and turn that into a URL in the browser. If you're trying to stream videos you you can't do that because you're limited by you have to fit the thing in RAM, but you can get around that with service workers. This only works in Chrome, sadly, but and I hope it works. It can be flaky.

A

So we've got the simple movie here which is well. You can see it's 120 Meg which would fit in around, but let's not do that and we can try and stream it.

A

So this will download at 5 Meg at a time, decrypted reassemble it and then write it to this writable stream, which which thing gets played.

A

A

The sound as well I, don't you can hear, but.

A

Yeah, and so that's all you need to do is be able to download and decrypt it faster than you're actually playing it. So your resolution that you can do with this is is limited by out your connection, but you get the idea.

A

You've, probably all seen that a million times, so, let's stop that. What else do we have? We have a few basic media players so that, obviously we just you've just seen images and videos. We have audio as well, which also does streaming. We also have a very basic text in inline text. Viewer.

A

So you know whatever here's some JavaScript I.

A

Think it still might be doing some video stuff in the background but yeah and if it's a format which we don't have a viewer for yet then the default fallback. Let's find something.

A

That's 12, maybe think yeah. So this guy we.

A

Fall back to basically a hex viewer and you can, if you imagine, trying to render 12 mega of hex in the browser it doesn't. It doesn't do that so it lazily downloads, what you're trying to section your out to display it. So there we go, you can see it's a PDF hash PDF and you can scroll down and that's doing that on demand.

A

Modulo 5 make chunks.

A

But the idea is we'll get more like. Hopefully we will have a PDF viewer at some point, but there's a harder to secure sure we'd, say whoo yeah awesome. Thank you.