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Difference between symmetric and asymmetric key cryptography.

Difference between symmetric and asymmetric key cryptography:

FeatureSymmetric-key CryptographyAsymmetric-key Cryptography
1. Key UsageUses a single key for both encryption and decryption.Uses two different keys – a public key for encryption and a private key for decryption.
2. Shared InformationBoth communicating parties share the same algorithm and key.Communicating parties each have a pair of matched keys (public and private).
3. Speed of ProcessesEncryption and decryption processes are very fast.Encryption and decryption processes are slower compared to symmetric-key cryptography.
4. Key DistributionKey distribution is a problem.Key distribution is not a problem.
5. Encrypted Text SizeThe size of encrypted text is the same or less than the original text.The size of encrypted text is more than the size of the original text.

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