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SSL & TLS

SSL & TLS. “At the end of the day, the goals are simple: safety and security” – Jodi Rell. - Richard Bhuleskar. Goals of Security. Integrity. Authenticity. Confidentiality. SSL. Public Key Cryptography Key generation eg. Deffie Hellman Encrypt data. Handshake.

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SSL & TLS

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  1. SSL & TLS “At the end of the day, the goals are simple: safety and security” – Jodi Rell - Richard Bhuleskar

  2. Goals of Security Integrity Authenticity Confidentiality

  3. SSL • Public Key Cryptography • Key generation eg. Deffie Hellman • Encrypt data

  4. Handshake 1. Available Ciphers, Random number 2. Select Cipher, Random no, Server certificate 3. Encrypted pre-master-secret Server Client 4. Compute Keys 4. Compute Keys 5. MAC of handshake messages 6. MAC of handshake messages

  5. SSL Security - MITM Intended connect Bob Alice Trudy claims as Alice Trudy claims as Bob Trudy

  6. Benefits • Transparent- application and transport layer • Authentication and Key exchange. • Communication privacy, Message Integrity.

  7. Conclusion • Not a complete solution. • Cannot protect if systems compromised. • Poor performance

  8. Thank You

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