www.microsoft.com
tested 10 years ago
Certificate Overview
| Valid Host Names | Matched | www.microsoft.com | |
|---|---|---|---|
| Expires | in 11 months | Valid after Jan 12, 2013 | |
| Trust | Trusted | The certificate was issued by MSIT Machine Auth CA 2 |
Security
| Encryption Ciphers | OK | ||
|---|---|---|---|
| Public Key Size | 2048 bits | Key sizes 1024 bits or larger are considered secure. Be aware that unnecessarily large key sizes will slow down the connection establishment. | |
| Secure Renegotiation | No | This server is vulnerable to man-in-the-middle attacks by allowing insecure renegotiation. | |
| Protocols | OK | SSLv3, TLSv1 |
Performance
| HTTP Keepalive | No | Enabling HTTP Keep-Alive will allow subsequent requests to be served faster, without the need to establish a new SSL/TLS connection. | |
|---|---|---|---|
| SSL Session Cache | Yes | ||
| TLS Stateless Resume | No | TLS stateless resume allows for faster re-connections to TLS enabled servers, without needing session state to be stored on the server. | |
| SSL Handshake Size | 6045 bytes | The amount of data exchanged to establish a session with this server is large. This will result in a slower initial connection. Using a certificate with fewer intermediate chains and / or a smaller public key size can reduce the amount of data. |
Encryption Ciphers (TLS/SSLv3)
| Cipher | Strength | Algo | Key | KeyEx | Handshake | ||
|---|---|---|---|---|---|---|---|
| AES256-SHA | High | AES | 256-bit | RSA | 128ms | 5925 bytes | |
| DES-CBC3-SHA | High | 3DES | 168-bit | RSA | 140ms | 5909 bytes | |
| AES128-SHA | High | AES | 128-bit | RSA | 141ms | 5925 bytes | |
| RC4-SHA | Medium | RC4 | 128-bit | RSA | 138ms | 5901 bytes | |
| RC4-MD5 | Medium | RC4 | 128-bit | RSA | 139ms | 5893 bytes | |