logoalt Hacker News

0xbadcafebee06/15/20253 repliesview on HN

No no, they're not. They're names of specific protocols with specific capabilities and versions. "SSL 1.0" and "TLS 1.0" are very different. (see https://aws.amazon.com/compare/the-difference-between-ssl-an...)

The important bits:

- "SSL" is a set of protocols so ridiculously old, busted and insecure that nobody should ever use them. It's like talking about Sanskrit; ancient and dead.

- "TLS" is way better than "SSL", but still there are insecure versions. Any version before 1.2 is no longer supported due to security holes.

- Technically an "ssl certificate" is neither "SSL" nor "TLS", it's really an "X.509 Certificate with Extended Key Usage: Server Authentication". But that doesn't roll off the tongue. You could use a cert from 1996 in a modern TLS server; the problem would be its expiration date, and the hash/signature functions used back then are deprecated. (some servers still support insecure methods to support older clients, which is bad)


Replies

creatonez06/16/2025

The point is more that SSL 3.0 and TLS 1.0 were nearly identical. That is, the breaks in similarity were at SSL 2.0 -> SSL 3.0 (and TLS 1.2 -> TLS 1.3, to a lesser extent), as opposed to the common misconception that TLS 1.0 is what changed everything.

But yes, it's all a bit irrelevant now that anything below TLS 1.2 is sketchy to use.

MOARDONGZPLZ06/15/2025

Right, but they accomplish the same thing and people move monotonically from SSL to TLS. It’s not like choosing between React and Angular, but like choosing between React version 5 and React version 10 for a new project. SSL and TLS are the same in all meaningful respects from this perspective.

show 2 replies
GoblinSlayer06/16/2025

It's a new word in version churn: rename the whole thing on every commit.