Real World Application of Cryptography

Cryptography is the study of the encrypted techniques of communication, which only enable the sender and the intended recipient to see their information. The concept comes from the Greek word cryptos, meaning secret. The coding is directly linked to which ordinary texts are scrambled into what is called the cyphertext, and then back at the time of arrival. In addition, cryptographing often covers the hiding of photographs using microdotal or fusion techniques.

The most popular use of encrypting and decrypting email and other plain-text message is when electronic data are transmitted. The most straightforward approach is the scheme symmetric or “hidden key.” The data is secured by a hidden key, and both the encoded message and secret key are forwarded for decryption to the receiver. The issue? When the packet is intercepted, it’s all a third person needs to decode and decipher the message. The asymmetric or “public key” Scheme has been invented by cryptologists to tackle this issue. Each consumer has two keys in this case: one public and one private. Senders request their destination’s public key, encrypt and send the message.

Applications:

1. Digital Signatures/Authentication:

   Authentication is any method by which such evidence is confirmed and checked. One will wish to check the origin of a document, the sender’s identification, the time, dates and signatures of a document, the device or user’s identity etc. A digital signature is an encryption tool that allows all of these to be verified. A document’s digital signature is a detail dependent on the document and the private key of the signer. It is generally generated using a Hash function and a private signing feature (algorithms that create encypyted characters containing specific information about a document and its private keys).

2. Email encryption/decoding:
   
   

   E-mail encryption is a way to secure email material to someone else who wants to get information from a participant outside the email conversation. An e-mail can no longer be read by a person in its encrypted form. Your emails can only be unlocked and decrypted into the original message by means of your private email address.

3. Stamping hour: Time:
   
   

   Time stamping is a procedure which can confirm the existence or the delivery at a certain time of certain electronic documents or correspondence. Time stamping uses a model of encryption called a blind signature system. Blind signature systems enable the sender to receive a response from other parties without revealing the other party’s message.

4. WhatsApp Encryption:
   
   

   WhatsApp uses an encryption “signal” protocol, using a mixture of cryptographic algorithms for asymmetric and symmetrical key. The symmetric key algorithms ensure anonymity and integrity, while the asymmetrical key algorithms contribute to the achievement of other safety objectives, such as authentication and repudiation. A single key for encryption of the data and decryption is used in the symmetric key cryptography.