What is Reddit's opinion of Cyph?

From 3.5 billion Reddit comments

Cyph is great for communication. Like protonmail, but more secure and more focused on, chat, video, files, etc. There's also a cryptocurrency wallet coming out for it soon.

I've also slowly been using hacker news a lot more instead of reddit. I really only come back here now for a few subreddits.

Edit: added links

No, what you're thinking of is OTR leaking MAC keys (which are different from encryption keys).

OTR's deniability property comes from two different pieces:
​

1. Most importantly, by proving message authenticity with MACs, rather than signatures. A MAC can essentially be thought of as a "symmetric signature", in that the same key is required both to "sign" a message and to verify it.
   ​
   Because generating a valid MAC is only possible for someone who can decrypt the message and read the MAC key, both Alice and Bob can be sure that at least one of them is the author of any decrypted message (given the precondition of real-time confidentiality) – thus guaranteeing in-the-moment authenticity.
   ​
   However, unlike with signatures, after-the-fact decryption by a third party not only fails to pinpoint the origin of the message to either Alice or Bob specifically, but also grants that third party the capability to "forge" a message using the MAC key – thus giving both Alice and Bob "plausible deniability" of authorship (from a cryptographic standpoint).
   ​

2. Unlike the TextSecure protocol and Cyph's Castle protocol, OTR goes one step further by publishing each message's MAC key in the clear for everyone to see after that message has been read by its intended recipient.
   ​
   In theory, this makes the authenticity slightly "more" deniable; though it does somewhat increase its attack surface, and the practical impact remains untested to my knowledge (in terms of legal precedent).

​
#2 is what you were referring to. (Note that if you wanted to accomplish this form of plausible deniability without confidentiality, you could simply use no crypto at all.)

No, what you're thinking of is OTR leaking MAC keys (which are different from encryption keys).

OTR's deniability property comes from two different pieces:
​

1. Most importantly, by proving message authenticity with MACs, rather than signatures. A MAC can essentially be thought of as a "symmetric signature", in that the same key is required both to "sign" a message and to verify it.
   ​
   Because generating a valid MAC is only possible for someone who can decrypt the message and read the MAC key, both Alice and Bob can be sure that at least one of them is the author of any decrypted message (given the precondition of real-time confidentiality) – thus guaranteeing in-the-moment authenticity.
   ​
   However, unlike with signatures, after-the-fact decryption by a third party not only fails to pinpoint the origin of the message to either Alice or Bob specifically, but also grants that third party the capability to "forge" a message using the MAC key – thus giving both Alice and Bob "plausible deniability" of authorship (from a cryptographic standpoint).
   ​

2. Unlike the TextSecure protocol and Cyph's Castle protocol, OTR goes one step further by publishing each message's MAC key in the clear for everyone to see after that message has been read by its intended recipient.
   ​
   In theory, this makes the authenticity slightly "more" deniable; though it does somewhat increase its attack surface, and the practical impact remains untested to my knowledge (in terms of legal precedent).

​
#2 is what you were referring to. (Note that if you wanted to accomplish this form of plausible deniability without confidentiality, you could simply use no crypto at all.)

It sounds like he isn't really a capitalist, or is far enough from our understanding of laissez-faire capitalism that branding himself as "anti-capitalist" is what he sees as the most effective messaging. He may not want to end private property, but I have no doubt that in Bernie's ideal world my startup Cyph wouldn't have the potential to reach Google-scale, or if it did it would be taxed enough to essentially be a non-profit by that point.

That being said, Bernie isn't running on a platform of remaking the government and economy in his own image. The office wouldn't give him that power to begin with. If he's elected, his mandate will be moderate compared to the rest of the first world, and even that will likely require compromise within his own party, before the Republicans have their say.

You don't have to be far-left to agree with:

• Cutting massive government waste ($50 - $100 billion annually on the Drug War + clamping down on a bloated healthcare industry and subsides to its overpriced middlemen)

• Closing loopholes that allow the über-wealthy and multinational corporations to avoid paying their fair share and shift the burden onto the rest of us

• Ensuring that even the poorest in society have an acceptable baseline opportunity to be healthy (M4A) and productive (expanding public education to cover college and trade school)

• Taking decisive action to make sure we're not all dead in 80 years (it's the government's job to balance paper economic growth against negative externalities like climate change, not the private sector's)

At the risk of producing a quote that would be embarrassing out of context, if you think suicide is badass you may enjoy my startup Cyph's company voicemail greeting (recorded here).

Obligatory disclaimer: We in no way condone suicide, and don't recommend it to anyone ~~except the baddest of badasses~~. If you actually have any suicidal ideations, please consult /r/SuicideWatch immediately.

/u/thatawkwardcosplayer, I just sent you an invite to the Cyph beta.

I honestly don't know how well it works with screen readers right now, but I would definitely appreciate any feedback you're willing to give and make an effort to prioritize any issues you report.

You could also preinstall the Cyph app that was just released and gift him a premium account.

I'll shoot you a PM with a free invite code to try it out first if you'd like. (Disclaimer: I'm a cofounder of Cyph.)