Question

Differentiate asymmetric and symmetric algorithms.

Answer 1

Symmetric Key Encryption	Asymmetric Key Encryption
Same key is used for both encryption and decryption.	Different keys are used for encryption and decryption.
Speed of encryption or decryption is very fast.	Speed of encryption or decryption is comparatively slow.
Plain text and cipher text are of same size.	The size of cipher text is always greater than plain text.
Algorithms like DES, AES, RC4 uses symmetric key encryption.	Algorithms like RSA, ECC, DSA use asymmetric key encryption.
Provides confidentially.	Provides confidentially, authenticity and non-repudiation.
The number of key used grows exponentially with the numbers of users.	The number of key used grows linearly with the numbers of users.