Security summary for a given TLS client connection being handled by a
|nsITLSServerSocket| server.
This is accessible through the security info object on the transport, which
will be an instance of |nsITLSServerConnectionInfo| (see below).
The values of these attributes are available once the |onHandshakeDone|
method of the security observer has been called (see
|nsITLSServerSecurityObserver| below).
peerCert
The client’s certificate, if one was requested via |requestCertificate|
above and supplied by the client.
tlsVersionUsed
The version of TLS used by the connection. See values above.
cipherName
Name of the cipher suite used, such as
“TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256”.
See security/nss/lib/ssl/sslinfo.c for the possible values.
keyLength
The “effective” key size of the symmetric key in bits.
macLength
The size of the MAC in bits.
Values for tlsVersionUsed, as defined by TLS