Two people may communicate securely by encrypting the messages sent between them. Handshake Protocol is able to negotiate encryption keys as well as authenticate the server before data is exchanged by the higher-level application. The SSL protocol maintains the security and integrity of the transmission channel by using encryption, sender authentication and message authentication codes. The private key is only available to the receiver, thus providing a secure communication, even between the many sources. Identification and Authentication Identification and Authentication are two widely used application of cryptography.
Identification is the process of verifying someone s or something s identity.
This same process can be done electronically using cryptography. Authentication is broader in scope because it does not necessarily involve identifying a person or entity. Authentication merely determines whether the person or entity is authorized for the transfer of information being requested. A digital signature binds a document to the possessor of a particular key, while a digital timestamp binds a document to its creation at a particular time. Electronic Commerce E -commerce is comprised of online banking, online brokerage accounts, and Internet shopping, to name a few of the many applications.