Download Certificate Authority Certificates
CSAIL has three certificate authorities: one top-level ("root", "trusted") CA signs the certificates of two intermediate CAs, which then sign the certificates of clients and servers. For Web browsers, email clients, and other client software, you may need only the top-level CA, or you may need only the intermediate CAs, depending on the program and version. For servers, you will need all three certificates; choose the format appropriate for your SSL/TLS library.
| If you have... |
Then install these certificates... |
| Firefox |
Master CA v2 |
| Internet Explorer |
Master CA v2 |
| Opera |
Master CA v2 |
| Safari |
Master CA v2 (must be installed in System Roots keychain [X509Anchors in 10.4]) |
| Chrome |
Same as the "native" browser for your platform |
| Older Netscape and Mozilla browsers |
Server CA, Client CA |
| Thunderbird |
Server CA, Client CA |