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Differentiate between symmetric key cryptography & public key cryptography.

Subject: Mobile Computing

Difficulty: Medium

Marks: 4 Marks


1 Answer
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Sr No. Symmetric key cryptography Public key cryptography.
1 Also called as private key Also called as asymmetric key
2 Only one key is used:Private key Two keys are used: Public and private
3 The key is kept secret Public key is freely available to all, while private key is a secret key
4 Same key is used for encryption and decryption. One key is used for encryption while other is decryption.
5 Faster than public key cryptography Slower than symmetric key cryptography
6 It is used for encrypting small or large messages. It is used for encrypting small messages.
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