# What is Asymmetric & Symmetric Encryption?

The difference between these two types of encryption algorithms is that symmetric encryption uses one key for both encryption and decryption, and asymmetric encryption uses a public key for encryption and a private key for decryption.

## What is asymmetric and symmetric encryption?

Asymmetric and symmetric encryption are two different types of cryptography. Symmetric encryption is the oldest type of cryptosystem and was used in World War II to encrypt messages. Symmetric encryption uses a single key that both the sender and receiver share, meaning that if someone intercepts your message they can also read it because they know how to decrypt it!

In this blog post, we will discuss what asymmetric and symmetric encryption is. Asymmetric encryption is a system where two keys are used to encrypt and decrypt data.

One key is public and the other private, which means that only the person with the private key can read any encrypted information. Symmetric encryption relies on one key to both encrypt and decrypt data – it's called “symmetrical” because it uses one single set of instructions for each process.

Asymmetric encryption solves this problem by using a public key for anyone who wants to send you an encrypted message (the “public” part of asymmetrical means available for everyone) and a private key which only you have access to (so no one else can read your messages). We'll get into what these keys are exactly in just a moment. Let's discuss symmetric or asymmetric encryption!

## How do asymmetric and symmetric encryption work?

Asymmetric and symmetric encryption both work on the same principle. They use a shared key for encrypting and decrypting information. The idea is that if everyone involved knows the same key, they can securely pass information back and forth through this common channel.

For example, If Alice and Bob both have the same key and want to send messages to each other securely using encryption, Alice would put her message into a secure container (i.e., encrypt it) with the shared key and then send it to Bob.

When Bob receives the encrypted message, he can decrypt it by removing the container with the same shared key. This is the general idea behind symmetric encryption, but it gets a little more complicated when we start to think about how these keys are actually created and shared.

Symmetric vs Asymmetric encryption is a very interesting topic with public-key encryption and the decryption process. Both encryption algorithm includes sensitive data.

### Asymmetric Encryption

In an asymmetric encryption system, each person has a pair of keys that work together: a public key and a private key. The public key is shared openly with everyone, while the private key must remain known only to its owner. This works similarly to real-world locks that have a front door and a back door with no way of accessing one without having access to the other.

If Alice wants to send Bob an encrypted message, she will use Bob's public key to encrypt the message and then send it to him. The encrypted message will only be able to be read with Bob's corresponding private key, which he must keep secret from everyone else.

### Symmetric Encryption

In a symmetric encryption system, each person has one key that both encrypts and decrypts data. In this case, the shared key must be kept secret from everyone else. If Alice wants to send Bob a very secure message, she can use her private key to encrypt the data and then send it using Bob's public key.

When Bob receives this encrypted data, he can decrypt it with his own private key so that only he is able to see the sensitive information. The symmetric key encryption offers secret key options with symmetric key cryptography and the symmetric encryption process.

## Benefits of Asymmetric and symmetric encryption

Asymmetric encryption is generally used to encrypt communications to improve the confidentiality of the message, while symmetric encryption is typically used to encrypt disk storage or databases. Both types of encryption are very important for the protection of data and provide distinct security advantages over non-encrypted data.  Widely used symmetric encryption algorithms include AES-128, AES-192, and AES-256.

Key management is also easier with both asymmetric and symmetric key algorithms, because each user has a pair of keys. One key is used for encryption and the other is used for decryption. The two keys are mathematically related in such a way that data encrypted with one key from the pair can only be decrypted by the other key in the pair.

Asymmetric encryption is typically implemented in a public key cryptography system. In this type of system, each user has a pair of cryptographic keys -a private key and a public key. The two keys are related, but it is computationally very difficult to derive one key based on the other.

## Summary

When you think of encryption, what comes to mind? Most people are familiar with the concept of AES and RSA. But do you know what they stand for? And if not, how can you be sure that your data is safe? Encryption is one way to ensure the safety of your data by keeping it hidden from prying eyes. However, there are two different types: symmetric and asymmetric encryption. Let's take a look at these two types in more detail!

### References

https://en.wikipedia.org/wiki/Public-key_cryptography

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