Encryption
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It is about Encryption like Symmetric, Asymmetric and Hashing and what are these, how are these working and what are differences exist among these.
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Encryption
- 1. Encryption
- 3. Main Types of Encryption Symmetric Encryption Asymmetric Encryption Hashing
- 6. Symmetric Encryption-Uses Cloud backup Services To encrypt computer or storage device To create secure Channel between two endpoints
- 7. Symmetric Encryption-Drawbacks Encryption becomes useless Attacker gains the key over network Software or Platform itself is compromised
- 8. Text Cipher Algorithm Public / Private Key Encrypted Text Cipher Algorithm Private / Public Key Decrypted Text Text Asymmetric Encryption ?
- 10. Asymmetric Encryption-Uses TLS (Transport layer Security) SSH (Secure Sockets Layer) In Email
- 11. Asymmetric Encryption-Drawbacks Main problem trusted public key Man in Middle
- 12. Hashing ? Data Storage String or Number Fixed length Result vary widely with small variations in input
- 14. Hash Encryption Properties the same data will always produce the same hash it’s impossible to reverse it back to the original data it’s infeasible to create another string of data that will create the same hash
- 15. Hash Encryption-Uses Passwords Files
- 16. Hash Encryption-Weakness Impossible to reverse a hash Costs a lot to find a collision for
- 17. Difference b/w Encryption vs Hashing Hashing
- 18. Difference b/w Encryption vs Hashing Encryption
Editor's Notes
- Hashing is like matching a finger print whereas encrypting it is to scramble the message. Use hashing to determine if the message/file is authentic. Use encryption to protect/hide the content.
- Hashing is used in conjunction with authentication to produce strong evidence that a given message has not been modified. This is accomplished by taking a given input, encrypting it with a given key, hashing it, and then encrypting the key with with the recipient’s public key and signing the hash with the sender’s private key. When the recipient opens the message, they can then decrypt the key with their private key, which allows them to decrypt the message. They then hash the message themselves and compare it to the hash that was signed by the sender. If they match it is an unmodified message, sent by the correct person.