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Compare Public Key and Private Key crypto systems

written 9.7 years ago by teamques10 ★ 70k

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Difference between Conventional Encryption and Public Key Cryptography.(Conventional Encryption (Private Key)

data compression and encryption

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written 9.7 years ago by teamques10 ★ 70k

Private Key Cryptography	Public Key Cryptography
1. The same length algorithm with the same key is used for encryption and decryption.	1. One algorithm is used for encryption and decryption with a pair of keys, one for encryption and one for decryption.
2. The sender and receiver must share the algorithm and the key.	2. The sender and receiver must each have one of the matched pair of keys. (not the same oneOne )
3. The key must be kept secret.	3. One of the two keys must be kept secret
4. It must be impossible or at least impractical to decipher a message if no other information is available.	4. It must be impossible or at least impractical to decipher a message if no other information is available.
5. Knowledge of the algorithm plus samples of ciphertext must be insufficient to determine the key.	5. Knowledge of the algorithm plus one of the keys plus samples of ciphertext must be insufficient to determine the other key.

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