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Differentiate between symmetric key cryptography & public key cryptography.

written 4.8 years ago by | • modified 4.8 years ago |

**Subject**: Mobile Computing

**Difficulty**: Medium

**Marks**: 4 Marks

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Differentiate between symmetric key cryptography & public key cryptography.

written 4.8 years ago by | • modified 4.8 years ago |

**Subject**: Mobile Computing

**Difficulty**: Medium

**Marks**: 4 Marks

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written 4.8 years ago by | • modified 4.8 years ago |

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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