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Encryption
The document outlines types of encryption, specifically symmetric and asymmetric encryption, along with their uses and drawbacks. It also explains hashing, its properties, uses, and distinctions from encryption. The discussion highlights the challenges associated with each method, such as key management and security vulnerabilities.
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Encryption
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- 3. Main Types ofEncryption Symmetric Encryption Asymmetric Encryption Hashing
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- 6. Symmetric Encryption-Uses Cloudbackup Services To encrypt computer or storage device To create secure Channel between two endpoints
- 7. Symmetric Encryption-Drawbacks Encryptionbecomes useless Attacker gains the key over network Software or Platform itself is compromised
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- 10. Asymmetric Encryption-Uses TLS(Transport layer Security) SSH (Secure Sockets Layer) In Email
- 11. Asymmetric Encryption-Drawbacks Mainproblem trusted public key Man in Middle
- 12. Hashing ? DataStorage String or Number Fixed length Result vary widely with small variations in input
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- 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
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- 16. Hash Encryption-Weakness Impossibleto reverse a hash Costs a lot to find a collision for
- 17. Difference b/w Encryptionvs Hashing Hashing
- 18. Difference b/w Encryptionvs Hashing Encryption
Editor's Notes
- #13 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.
- #16 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.