What Is The Difference Between Symmetric And Asymmetric Key Encryptions? Well, let's find out in this article.
Symmetric Key Encryption
Any message can be encrypted in order to prevent unauthorized readers from reading it. The message is encrypted using a key in symmetric-key encryption, and the same key is also used to decrypt the message, making it simple to use but less secure. Additionally , a secure way must be used to pass the key from one party to another.
Asymmetric Key Encryption
Public and private key encryption strategies are the foundation of asymmetric key encryption. The message is encrypted and decrypted using two unique keys. Although slower, it is more secure than symmetric key encryption.
Symmetric vs. Asymmetric Encryption
1. Symmetric Key Encryption: It only requires a single key for both encryption and decryption.
1. Asymmetric Key Encryption: It requires two keys, a public key and a private key, one to encrypt and the other one to decrypt.
2. Symmetric Key Encryption: The size of cipher text is the same or smaller than the original plain text.
2. Asymmetric Key Encryption: The size of cipher text is the same or larger than the original plain text.
3. Symmetric Key Encryption: The encryption process is very fast
3. Asymmetric Key Encryption: The encryption process is slow.
4. Symmetric Key Encryption: It is used when a large amount of data is required to transfer.
4. Asymmetric Key Encryption: It is used to transfer small amounts of data.
5. Symmetric Key Encryption: It only provides confidentiality.
5. Asymmetric Key Encryption: It provides confidentiality, authenticity, and non-repudiation.
6. Symmetric Key Encryption: The length of key used is 128 or 256 bits
6. Asymmetric Key Encryption: The length of key used is 2048 or higher
7. Symmetric key encryption: In symmetric key encryption, resource utilization is low as compared to asymmetric key encryption.
7. Asymmetric Key Encryption: In asymmetric key encryption, resource utilization is high.
8. Symmetric Key Encryption: It is efficient as it is used for handling large amounts of data.
8. Asymmetric Key Encryption: It is comparatively less efficient as it can handle a small amount of data.
9. Symmetric Key Encryption: Security is less as only one key is used for both encryption and decryption purposes.
9. Asymmetric Key Encryption: It is more secure as two keys are used here-one for encryption and the other for decryption.
10. Symmetric Key Encryption: The Mathematical Representation is as follows-
P = D (K, E(P))
where K –> encryption and decryption key
P –> plain text
D –> Decryption
E(P) –> Encryption of plain text
10. Asymmetric Key Encryption: The Mathematical Representation is as follows-
P = D(Kd, E (Ke,P))
where Ke –> encryption key
Kd –> decryption key
D –> Decryption
E(Ke, P) –> Encryption of plain text using encryption key Ke . P –> plain text
Hopefully, reading this article, "What Is The Difference Between Symmetric And Asymmetric Key Encryptions: Symmetric vs. Asymmetric Encryption" can help you to understand it better than before.
