There are various applications of cryptography which are as follows −
Secrecy in Transmission −
Some existing secrecy systems for transmission access a private key system for
converting transmitted data because it is the quickest approach that functions
with rational guarantee and low overhead.
Secrecy in Storage −
Secrecy in storage is frequently preserved by a one-key system where the user
provide the key to the computer at the commencement of a session, and the
system creates concern of encryption and decryption during the phase of normal
use.
Integrity in
Transmission − Some users of communication
systems are not as much worried concerning secrecy as about integrity. In a
computer funds transfer, the sum sent from one account to another is usually
public knowledge.
If an operating tapper
can bring in a false transfer, funds can be shared illegally. An inaccuracy in
an individual bit can cause millions of dollars to be wrongly credited or
debited. Cryptographic methods are generally used to provide that intentional
or accidental modification of transmitted data does not cause flawed actions to
appear.
Integrity in Storage −
The central meaning of assuring integrity of accumulated data has previously
been access control. Access control contains systems of locks and keys, guards,
and other approaches of a physical or logical feature.
The recent advent of
computer viruses has altered this to an important degree, and the use of
cryptographic checksums for assuring the integrity of stored data is becoming
broad.
Authentication of
Identity − Authenticating the identity of individuals
or systems to each other has been a difficult for a very long time. Simple
passwords have been used to test identity. More compound protocols such as
sequence of keywords exchanged between sets of parties are generally display in
the movies or on television.
Credentialing Systems −
A credential is generally a file that introduces one party to another by
referencing a usually known trusted party. When credit is used for, references
are usually requested. The credit of the references is determined and they are
contacted to discover out the tested of the applicant. Credit cards are
generally used to credential an individual to achieve more credit cards.
Electronic Signatures −
Electronic signatures are a means of monetary a lawfully binding transaction
among two or more parties. It can be as functional as a physical signature,
electronic signatures should be at least as hard to fake at least as simple to
use, and accepted in a court of law as binding upon some parties to the
operation.
The necessity for these
electronic signatures is especially intense in business dealings wherein the
parties to an agreement are not in the similar physical vicinity.
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