How RSA Works: TLS Foundations

#1

Post by rmdoss » Tue, Dec 12, 2017, 8:26 PM UTC

Re: How RSA Works: TLS Foundations

#2

Post by kss238 » Tue, Dec 12, 2017, 9:16 PM UTC

Can someone explain this section some more

>Considering that we need a distinct key for each individual, that exchanging keys with each person would be a significant computational burden, and that there are more cryptographic functions needed than simply exchanging keys, new methods arose.

Isn't this exactly what RSA does, exchanging a private symmetric key with asymmetric crypto? The next paragraph makes it seem like RSA does something different.

Re: How RSA Works: TLS Foundations

#3

Post by AngeloAnolin » Tue, Dec 12, 2017, 9:19 PM UTC

Noticed that this page worked on Chrome, but not on FF.

On FF (57.0.2) Windows 7, the message is as below:

Error 1010 Ray ID: 3cc3b2b85d0b9300 • 2017-12-12 21:15:17 UTC Access denied What happened?

The owner of this website (fly-io.ghost.io) has banned your access based on your browser's signature (3cc3b2b85d0b9300-ua48).

Not sure if the author or website owner had a beef with FF.

Re: How RSA Works: TLS Foundations

#4

Post by dguaraglia » Tue, Dec 12, 2017, 9:20 PM UTC

AngeloAnolin wrote: post #3

Noticed that this page worked on Chrome, but not on FF. On FF (57.0.2) Windows 7, the message is as below: Error 1010 Ray ID: 3cc3b2b85d0b9300 • 2017-12-12 21:15:17 UTC Access denied What happened? The owner of this website (fly-io.ghost.io) has banned your access based on your browser's signature (3cc3b2b85d0b9300-ua48). Not sure if the author or website owner had a beef with FF.

Same here.

EDIT: never mind, now it's giving the same error on Firefox too, only Safari works. Go figure.

Re: How RSA Works: TLS Foundations

#5

Post by mrkurt » Tue, Dec 12, 2017, 9:21 PM UTC

AngeloAnolin wrote: post #3

Noticed that this page worked on Chrome, but not on FF. On FF (57.0.2) Windows 7, the message is as below: Error 1010 Ray ID: 3cc3b2b85d0b9300 • 2017-12-12 21:15:17 UTC Access denied What happened? The owner of this website (fly-io.ghost.io) has banned your access based on your browser's signature (3cc3b2b85d0b9300-ua48). Not sure if the author or website owner had a beef with FF.

This is CloudFlare helpfully preventing you from DDOSing Ghost. We're working on bypassing CF for our ghost stuff, sorry about that.

Re: How RSA Works: TLS Foundations

#6

Post by [deleted] » Tue, Dec 12, 2017, 9:22 PM UTC

AngeloAnolin wrote: post #3

Noticed that this page worked on Chrome, but not on FF. On FF (57.0.2) Windows 7, the message is as below: Error 1010 Ray ID: 3cc3b2b85d0b9300 • 2017-12-12 21:15:17 UTC Access denied What happened? The owner of this website (fly-io.ghost.io) has banned your access based on your browser's signature (3cc3b2b85d0b9300-ua48). Not sure if the author or website owner had a beef with FF.

[deleted]

Re: How RSA Works: TLS Foundations

#7

Post by [deleted] » Tue, Dec 12, 2017, 9:22 PM UTC

AngeloAnolin wrote: post #3

Noticed that this page worked on Chrome, but not on FF. On FF (57.0.2) Windows 7, the message is as below: Error 1010 Ray ID: 3cc3b2b85d0b9300 • 2017-12-12 21:15:17 UTC Access denied What happened? The owner of this website (fly-io.ghost.io) has banned your access based on your browser's signature (3cc3b2b85d0b9300-ua48). Not sure if the author or website owner had a beef with FF.

[deleted]

Re: How RSA Works: TLS Foundations

#8

Post by goodroot » Tue, Dec 12, 2017, 9:23 PM UTC

kss238 wrote: post #2

Can someone explain this section some more >Considering that we need a distinct key for each individual, that exchanging keys with each person would be a significant computational burden, and that there are more cryptographic functions needed than simply exchanging keys, new methods arose. Isn't this exactly what RSA does, exchanging a private symmetric key with asymmetric crypto? The next paragraph makes it seem lik…

Most excellent question, kss238. The next part in the series, which breaks apart the different parts of a TLS ciphersuite, was just published: http://fly.io/articles/how-ciphersuites-work/

It should answer your question, in similar spirits to that of this article. Thank you for reading and I wish you well.

Re: How RSA Works: TLS Foundations

#9

Post by judge2020 » Tue, Dec 12, 2017, 9:24 PM UTC

mrkurt wrote: post #5

AngeloAnolin wrote: post #3

Noticed that this page worked on Chrome, but not on FF. On FF (57.0.2) Windows 7, the message is as below: Error 1010 Ray ID: 3cc3b2b85d0b9300 • 2017-12-12 21:15:17 UTC Access denied What happened? The owner of this website (fly-io.ghost.io) has banned your access based on your browser's signature (3cc3b2b85d0b9300-ua48). Not sure if the author or website owner had a beef with FF.

This is CloudFlare helpfully preventing you from DDOSing Ghost. We're working on bypassing CF for our ghost stuff, sorry about that.

If you have extra page rules, the "disable security" tick on `https://fly.io/articles/*` may stop this kind of protection.

Re: How RSA Works: TLS Foundations

#10

Post by mrkurt » Tue, Dec 12, 2017, 9:25 PM UTC

judge2020 wrote: post #9

mrkurt wrote: post #5

Earlier quoted context omitted.

This is CloudFlare helpfully preventing you from DDOSing Ghost. We're working on bypassing CF for our ghost stuff, sorry about that.

If you have extra page rules, the "disable security" tick on ` https://fly.io/articles/*` may stop this kind of protection.

It's not actually our CloudFlare site, unfortunately, we're proxying Ghost Pro through our service (so we can serve `/articles/` on the same hostname).