Certificate Overview
| Valid Host Names | Matched | github.com www.github.com | |
|---|---|---|---|
| Expires | in 5 months | Valid after May 27, 2011 | |
| Trust | Trusted | The certificate was issued by DigiCert High Assurance EV CA-1 |
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 | Yes | ||
| Protocols | OK | SSLv3, TLSv1 |
Performance
| HTTP Keepalive | Yes | ||
|---|---|---|---|
| SSL Session Cache | No | SSL Session caching allows faster re-establishment of a cached SSL session, improving user experience | |
| 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 | 4436 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 | ||
|---|---|---|---|---|---|---|---|
| RC4-SHA | Medium | RC4 | 128-bit | RSA | 118ms | 4284 bytes | |
| AES128-SHA | High | AES | 128-bit | RSA | 120ms | 4308 bytes | |
| DHE-RSA-AES128-SHA | High | AES | 128-bit | DH | 169ms | 4710 bytes | |
| DES-CBC3-SHA | High | 3DES | 168-bit | RSA | 118ms | 4292 bytes | |
| EDH-RSA-DES-CBC3-SHA | High | 3DES | 168-bit | DH | 173ms | 4694 bytes | |
| AES256-SHA | High | AES | 256-bit | RSA | 122ms | 4308 bytes | |
| DHE-RSA-AES256-SHA | High | AES | 256-bit | DH | 173ms | 4710 bytes | |