Review Video Dina Dwi Maharani 3 D3 IT A 2103141011.

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Presentation transcript:

Review Video Dina Dwi Maharani 3 D3 IT A 2103141011

Cryptogrpahy 101 – The Basics Cryptogrpahy adalah praktek dan teknik untuk mengamankan komunikasi dan data dalam adanya gangguan musuh

Cryptogrpahy 101 – The Basics Video Topics : Motivating Example Ciphertext Plaintext Keys Public Key Cryptography Private Key Cryptography

Cryptogrpahy 101 – The Basics I love you I hate you Public Forum (Internet) m m Bob Alice Cryptonium Pipe Keterangan: m = Pesan (Plaintext) Eve (Enemy)

Cryptogrpahy 101 – The Basics kd Public Forum (Internet) c m c’ E D m or error ke Bob Alice Eve (Enemy) Keterangan: m = Pesan (Plaintext) ke = Encryption Key kd = Descryption Key c = Ciphertext E = Encryption Program D = Descryption Program

Cryptogrpahy 101 – The Basics HTTPS, the Hyper-Text Transfer Protocol with Secure Sockets, uses both public and private-key crypto to secure communications. Public key cryptography called elliptic curve Diffie-Hellman (ECDHE) Private key cryptography called the Advanced Encryption Standard (AES)

How SSL Works Tutorial - with HTTPS Example Why ssl Exists Encryption Identification Hiding what is sent from one computer to another Making sure the computer you are speaking to is the one you trust

How SSL Works Tutorial - with HTTPS Example ENCRYPTION Pesan Pesan Pesan v87,@ff!

How SSL Works Tutorial - with HTTPS Example Computers agree on how to encrypt Server sends certificate Encryption Your computer says ‘start encrypting’ The server says ‘start encrypting’ All messages are now encrypted

How SSL Works Tutorial - with HTTPS Example Company asks CA for a certificate CA creates certificate and signs it Who to trust Certificate installed in server Browser issued with root certificates Browser trusts correctly signed certs

Thank You