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Practical Cryptography - Coggle Diagram

- - - - encrpyption done one bits or byte at a time
      - XOR deployed for decryption
      - Operates on continuous stream
      - Faster and less complex
      - Modern Cipher can work on block or stream mode both:
        
        FISH
        
        CryptMT
        
        Scream
        
        Cryptographic hashing
    - - Simple
      - Slower
      - Operates on a block of bits
      - Common block Cipher
        
        AES-CBC
        
        AES-CGM
        
        3DES-EDE
        
        Blowfish
        
        DES
- - - - protocol for securelyexchanging cryptographic keys over an untrusted network
    - - for mobile devices and IoT
    - - used by government agencies,it’s a standard based on the mathematical conceptof modular exponentiation and discrete logarithm problems
    - - most widely used algorithm forsecuring communication and data encryption.
- - - - DHE/EDH (Ephemral DH)
        
        A different key is used each time between the parties
      - ECDH (Elliptic Curve DH)
        
        Uses EC public/private key pair
        
        the same shared secret is used all time between the parties
      - Diffie-Hellman (DH)
        
        the same shared key is used all time between the parties
      - ECDHE/ECEDH (Elliptic curve ephemeral DH)
        
        Uses EC public/private key pair
        
        A different shared secret is used all time between the parties
        
        based on rich math functions of values plotted on an elliptic curve.
        
        256-bit elliptic key = 3072-bit traditional standard key.
        
        This solution is excellent for mobile devices, smart devices,and IoT that have limited memory and limited processing power.
        
        Common use cases
        
        key exchange
        
        It’s used in IPsec, IP version 2,
        
        Transport Layer Security,
        
        digital signatures