Asymmetric Cipher Algos

Breakthrough 1976 paper by DH (and independently by RSA) a.k.a. Public Key Cryptosystem which enabled practical applications of crypto in banking, e-commerce etc.
Keyspace is necessarily larger because the “keypair” needs to be mathematically related
Based on the mathematics of the difficulty of large number factorisation
The public key is used to encrypt data and only the other related private key can decrypt the data back.

Breakthrough 1976 paper by DH (and independently by RSA) a.k.a. Public Key Cryptosystem which enabled practical applications of crypto in banking, e-commerce etc.