Certificate Overview
| Valid Host Names | Matched | www.twitter.com twitter.com | |
|---|---|---|---|
| Expires | in one year | Valid after Apr 10, 2012 | |
| Trust | Trusted | The certificate was issued by VeriSign Class 3 Extended Validation SSL CA |
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 | 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 | Yes | ||
| SSL Handshake Size | 4007 bytes | A smaller SSL handshake means a faster connection. Reducing the number & size of certificates in your chain, and reducing the size of the public key will reduce this. |
Encryption Ciphers (TLS/SSLv3)
| Cipher | Strength | Algo | Key | KeyEx | Handshake | ||
|---|---|---|---|---|---|---|---|
| RC4-MD5 | Medium | RC4 | 128-bit | RSA | 204ms | 3847 bytes | |
| RC4-SHA | Medium | RC4 | 128-bit | RSA | 214ms | 3855 bytes | |
| AES128-SHA | High | AES | 128-bit | RSA | 218ms | 3879 bytes | |
| DES-CBC3-SHA | High | 3DES | 168-bit | RSA | 224ms | 3863 bytes | |
| AES256-SHA | High | AES | 256-bit | RSA | 212ms | 3879 bytes | |