Question

Briefly explain asymmetric key encryption, its advantages and disadvantages

Answer 1

Asymmetric key encryption also known as public key encryption. It basically works with pair of keys. keys are private and public keys. Both are not same that's why it is asymmetric. Here public key is distributed among clients over network but private key is secret. you can encrypt data through public key but to decrypt you need private key. So one who want to send data to you can send encrypted data over network using his public key but that data can only be decrypted by person who is having private key.

Advantages:

1. No need for exchanging keys as we are passing it through network. Thus key distribution problem get eliminated.

2. higher secure as private key is secret and never distributed.

3. It can provide digital signature(electronic signature facility).

Disadvantages:

1.It is slow as compared to symmetric key encryption as its key length is large and need more time to encrypt.