I launching an internet e-commerce site where we will be taking
payments. I’ve been doing a lot of research on this.
I spoke to Verisign and Thawte (owned by Verisign) who have this
technology to step up old browsers to 128 bit encryption if they are
lower. That service costs $600 with Thawte and $1000 with Verisign.
There normal SSL service is a few hundred dollars less.
In any case, NO the ssl certificate authorities don’t really matter. You
want to make sure that its well known so that browsers don’t popup a
certificate acceptance notice.
With that said, we went with comodo at instantssl.com, you can even get
the plan to step people up to 128 bit for like 250 which is much
Verisign was the first and most recognized, but for now my company
probably won’t even put up the SSL logo.
Now, if you are doing something small, just go with a comodo’s lowest
plan which is around $100, MOST browsers are 128bit and higher anyways.
Hope this helps. -Aryk