Difference Between Encryption and Decryption

Main difference

Encryption is a method or process of converting or changing normal data into various types of codes based on programming so that it cannot be accessed by any unauthorized third party. Whereas decryption is the process of converting that encoded form of data back into the readable or normal form that it was originally intended to be. Both terms are interrelated with each other and are often used together.

Comparison chart

encryption Decoded
Definition The process of converting normal data into encrypted form, to prevent any unauthorized access, is called Encryption. The method of converting the encrypted data into its actual original form is called Decryption.
Nature Automatic – Whenever data is transferred or sent between two machines, it is automatically encrypted. Automatic and manual: the data receiver automatically converts the data from the codes to the original form. In some cases, it is also done manually.
Users The person is sending the data to the destination, or we can say the source. The receiver that receives the data and converts it. It is also known as destiny.
Example An employee is sending important documents to the manager. The manager is receiving the important documents from the employee.

What is encryption?

It refers to the conversion of data into a secret code form that is safe from unauthorized access by third parties and no one can understand it. The phenomenon of encryption is too old and has been used by the ancient Greeks and Romans to communicate with each other. In his time, messages were sent by replacing the letters of common language with different signs and other markings, indicating those letters. The receiver who originally intended to receive that message knew the meaning of the signs and was able to extract the original message from it. At that time, various tools were used to make the signs. This scheme was quite useful as anyone else receiving the message couldn’t understand it. The same phenomena leap from the pages of history and go through various phases of development. The modern form of such a process is called encryption. Since today communication is done through machines, machines convert the original message into an encrypted form instructed by a program. This coded form is not understandable to humans and is of no use until converted back to its original form. The encryption process has proven to be very helpful when it comes to data security and user privacy.

What is decryption?

Decryption is the method of converting the secretly encoded data to its original form. Data in encoded form is of no use until it is converted to the original, meaningful form. To do this, the recipient of the data must be able to decrypt it. In ancient times, messages that were sent in a secret sign-based language were only understandable to their specific and respective recipients, as they were only aware of the meaning of the secret signs. They extract the original message from the signs by their conversion skills. As machines are used for modern communication, the machine at the destination is capable of converting the encrypted form of data back into its original form. The machines automatically perform the decryption of codes in the maximum of cases. However, in some situations,

Encryption vs. Decryption

  • Encryption is the method of sending data in the form of secret codes that are not understandable and allow data security.
  • Decryption is the method of receiving the encrypted data and converting it back to its original and usable form.
  • The encryption is done automatically when the data is sent by a machine called the source. The pre-installed programs convert the data into secret codes before sending it.
  • Decryption occurs on the target machine. The machine receives and converts the encoded form of data to its original, meaningful form. It can be both automatic and manual.
  • Both methods are interrelated with each other as they are the highest preference for data security and privacy.

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