Background: Security Paradigm(s)

• Hop-by-Hop security (aka ìlink securityî)

  • encrypt -> decrypt -> encrypt -> decrypt -> encrypt -> decrypt
  • requires ìtrustedî gateways (e.g., trusted to not disclose decrypted data)

• End-to-End security

  • source to destination (writer to reader)
  • requires non-encrypted headers for routing (e.g., encryption above network or transport layers)

Previous slide

Next slide

Back to first slide

View graphic version