Difference between encryption and decryption

Introduction

In the world security computing, two terms that are often used interchangeably are encrypted y decryption. Although both are related to data protection, it is important to understand the difference between them. In this article, we will explain what each term means and discuss how they are used in information security.

Encryption

Encryption is the process of converting a readable message or data into a form that cannot be understood by unauthorized persons. Encryption is used to protect the privacy of information so that even someone who has access to the message or data cannot read it. There are several types of encryption used in computer security, including symmetric key encryption and public key encryption.

Symmetric key encryption

In symmetric key encryption, both the sender and receiver use the same secret key to encrypt and decrypt the message. This key is always kept secret and is not disclosed to anyone other than the sender and receiver of the message. This type of encryption is faster and more efficient than other types, but can have security problems if the secret key is found by someone unauthorized.

Public key encryption

Public key encryption, also known as public key cryptography, uses two different keys: one public and one private. The public key is used to encrypt the message and the corresponding private key is used to decrypt it. The public key can be shared with anyone, but the private key is always kept secret. This type of encryption is more secure than symmetric key encryption, because even if someone discovers the public key, they will not be able to decrypt the message without the corresponding private key.

Decryption

Decryption is the reverse process of encryption. It is the process of converting encrypted data into readable format again. If someone who is not authorized gains access to encrypted information, they will not be able to read it without the correct key to decrypt it. However, if someone with authorization gains access to the data, she can use the decryption process to decrypt it and convert it into a readable format.

Conclusion

Although encryption and decryption are closely related, it is important to remember that they are different processes. Encryption is used to protect user data, while decryption is used to access encrypted data that is needed to recover readable information. There are several types of encryption and decryption used in computer security, each with its strengths and weaknesses. It is important for cybersecurity professionals to understand these processes to protect the privacy and security of online information.

References:

• https://www.interserver.net/tips/kb/difference-encryption-decryption/
• https://www.tutorialspoint.com/cryptography/cryptography_quick_guide.htm