[warsheep]

Moxie is a great researcher and WhisperSystems seem serious. However, I don't understand why you claim that TextSecure is designed by cryptographers.

From what I've seen, they use something called the "Axolotl Ratchet", developed by Trevor Perrin. A quick search of his name didn't yield any crypto papers / research by him.

Also, you write "and has been studied in detail for years"

There are no links/references to code/protocol reviews in the WhisperSystems website.

Again, I have the utmost respect for their research, it's just that from the side of a non-crypto-versed user/coder, Telegram and TextSecure look the same.

[moxie]

Trevor Perrin worked at Cryptography Research (I mean, the domain name is cryptography.com!) for six years, which alone should probably be enough to call yourself a cryptographer. His other work outside of CRI is also really quite prolific.

> Again, I have the utmost respect for their research, it's just that from the side of a non-crypto-versed user/coder, Telegram and TextSecure look the same.

Yep, it's frustrating to be the quixotically genuine seller in a market for lemons.

[conradev]

I have a question about TextSecure. Do you plan on implementing something like SMP from OTRv3 in the TextSecure protocol?

[sillysaurus2]

I don't understand why you claim that TextSecure is designed by cryptographers. From what I've seen, they use something called the "Axolotl Ratchet", developed by Trevor Perrin.

Here are some resources:

https://www.hnsearch.com/search#request/all&q=by%3Atptacek+t...

https://www.whispersystems.org/blog/advanced-ratcheting/

https://pond.imperialviolet.org/

[mattlutze]

Perrin appears to be one of the lead authors here: http://tack.io/draft.html

You might also try reading some of his more recent discussion comments on IETF working groups:

- http://www.ietf.org/mail-archive/web/websec/current/maillist...

- http://www.ietf.org/mail-archive/web/tls/current/maillist.ht...

- (from 2002): http://mhonarc.domainunion.de/archive/html/ietf-openpgp/2002...

Just a few things that turned up when I Googled him.

[tptacek]

Trevor Perrin is a cryptographer.