Applications of Diffie Hellman Algorithm

Many protocol uses Diffie-Hellman algorithm to enhance security and few of them are:

1. Secure Shell (SSH): SSH is a secure network protocol that can be used to transmit files and log into distant machines. SSH uses the Diffie-Hellman algorithm to allow secure key exchange between client and server and secure data transfer.
2. Transport Layer Security (TLS) / Secure Sockets Layer (SSL): Secure Sockets Layer (SSL) and Transport Layer Security (TLS) are encryption protocols that are used to protect online communication. These protocols use the Diffie-Hellman algorithm to safely exchange encryption keys, preventing data manipulation and eavesdropping.
3. Public Key Infrastructure (PKI): To secure communication over the internet, PKI uses a system of digital certificates, certificate authorities, and public key encryption. PKI uses the Diffie-Hellman algorithm to exchange encryption keys securely while preserving data integrity and secrecy.
4. Internet Key Exchange (IKE): IKE is a protocol that is used to establish a secure virtual private network (VPN) connection. IKE uses the Diffie-Hellman algorithm to create a secure VPN connection and securely exchange encryption keys.
5. Internet Protocol Security (IPSec): The security protocol known as Internet Protocol Security (IPSec) is used to protect online communication. IPSec uses the Diffie-Hellman algorithm to exchange encryption keys securely while preserving the confidentiality and integrity of data transmission.

Diffie-Hellman-Algorithm is primarily a protocol that is used for key exchange. Using this interactive protocol two parties will derive a common secret key by communicating each other. The security of Diffie-Hellman algorithm is mainly based on the difficulty of computing the discrete logarithms.