Episode 98 - Encryption

Encryption is the process of scrambling data to protect personal files, secure communication, hide identities and much more.  In this video we will learn about the different type of encryptions we will talk about symmetric encryption, asymmetrical encryption, where they are used for and the pros and cons of each one.  Symmetric encryption Asymmetrical encrypt  Pros and cons of sym va asym  Symmetric encryption  Might as well just call it classic encryption I would argue and i think this is the first encryption known to us. I have some thing I dont want anyone to see I use a lock key to lock it. Only I can open it unless I have a lock.  The same key you use to encrypt is the same key to Decrypt.  Examples Examples of popular symmetric-key algorithms include  AES Twofish Serpent  DES Twofish, Serpent, AES (Rijndael), Blowfish  CAST5, Kuznyechik, RC4, DES, 3DES, Skipjack, Safer+/++ (Bluetooth), and IDEA  Asymmetrical encryptions  We had symmetric encryptions for a long time, then internet came and networking and we needed to encrypt messages going back and forth. We said cool lets use AES. Then we said wait a second.. the other computer doesnt really have my key so we need to encrypt it..  Also called Public key encryption  1977  Rivest–Shamir–Adleman (RSA)  Diffie–Hellman key exchange protocol DSS (Digital Signature Standard), which incorporates the Digital Signature Algorithm ElGamal Various elliptic curve techniques Various password-authenticated key agreement techniques Paillier cryptosystem RSA encryption algorithm (PKCS#1) Cramer–Shoup cryptosystem YAK authenticated key agreement protocol