TLS (Transport Layer Security)

The CIA triad stands for...

• Connection, Interface, Allocation

• Control, Inspection, Authorisation

• Confidentiality, Integrity, Availability

• Computing, Internet access, Authentication

If my communications meet the integrity property...

• My messages will remain secret

• The receiver will 100% of time receive my messages

• My communication will be fast

• My messages will remain unaltered

TLS takes care of...

• Confidentiality & Integrity

• Integrity & Availability

• Availability & Authorisation

• Authentication & Integrity

In which layer does TLS operate?

• Network Layer

• Transport Layer

• Session Layer

• Application Layer

Which advantages does TLS have for being applied in the session layer?

• E2E between apps

• E2E between hosts

• Interoperability among protocols

• Reusability

Which information is agreed between peers during a TLS session?

• TLS version

• Cipher suite

• Contents of the messages

• Server identity certificates

Which protocols can use underneath TLS?

• TCP

• Any application layer protocol

• IP

• UDP

Which protocol is most recent?

• SSL 1.0

• SSL 2.0

• SSL 3.0

• TLS 1.0

Symmetric cryptography...

• Uses a single key

• Uses a pair of keys

• Is faster than assymetric cryptography

• Can be use to prove someone's identity

Asymmetric cryptography...

• Uses a single key

• Uses a pair of keys

• Ciphered messages are bigger

• Can be use to prove someone's identity