| Both encryption and decryption can be done using just one key. | It TAKES two keys to encrypt and DECRYPT data respectively. |
| In this technique, the encryption system is very fast. | In this technique, the encryption system is slow. |
| When a huge volume of data must be transferred, it is used. | When a small volume of data must be transferred, it is used. |
| When compared to asymmetric key encryption, symmetric key encryption uses fewer resources. | When compared to symmetric key encryption, asymmetric key encryption uses more resources. |
| The ciphertext is the same size as or smaller than the plain text. | The ciphertext is the same size as or greater than the plain text. |
| Eg :- AES, DES | Eg :- DSA and RSA |
