How can I check my browser to see if it supports 128-bit encryption?

Question

I was given the task of finding a replacement for part of the old code. I assume it is tested to see if the browser supports 128 bit encryption. Here is the old code: (I intentionally split the link into 4 lines) Have you ever seen this code before? How can I duplicate this functionality inside a php page?

http://www.verisign.com/update-cgi/outPage.exe
?good=../docs/html/good.html
&nsbad=../docs/html/upgradeNSonly.html
&ie2=../docs/html/upgradeIEonly.html


Explanation The
old webmaster found a link to verisign that did a browser check. Since then, Verisign has stopped supporting this link. Personally, I think that we just need to ask our customers to click on Help> About inside the browser and find the strength of the encryption. If it is not at least 128, then we just tell them to update the browser.

Answer 1

All modern browsers support 128-bit encryption out of the box. Do you have a need to support browsers older than IE 5.5?

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Answer 2

, , - URL.

, , : " php?" ...

-, , , , - , . , , - .

mod_ssl apache, mod_php ( , /- PHP), $_SERVER, "SSL_CIPHER", "SSL_CIPHER_USEKEYSIZE", "SSL_CIPHER_ALGKEYSIZE" "SSL_SERVER_A_KEY"

.

http://httpd.apache.org/docs/2.0/mod/mod_ssl.html#envvars

, , , , , , :

, , 128- ?

.

Answer 3

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:

• , SSL;
• , , ;
• , , . PHP.

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Answer 4

128 . , , - (, 40 56).

I suggest you ask how to configure a web server to enforce it based on your platform at:

http://serverfault.com