Question 11: Explain in details the cryptosystem RSA. How are keys generated? Ho

Question

Question 11: Explain in details the cryptosystem RSA. How are keys generated? How is the encryption algorithm? How is the decryption algorithm?

Question 12: “Textbook RSA” like you described in the previous question is not secure. Explain why. Describe the padding OAEP and how it is used with RSA to make it secure.

Question 13: What are digital certificates and why are they useful? What is public key infra-structure? Explain how it works and how it solves the authentication problem in public key cryptography.

Explanation / Answer

Question 11: Explain in details the cryptosystem RSA. How are keys generated? How is the encryption algorithm? How is the decryption algorithm?

in the cryptosystem, RSA is an asymmetric algorithm. it means it uses two different keys Public Key and Private Key. Public Key is given to everyone and the Private key is kept private.

How are keys generated:

How is the encryption algorithm?

How is the decryption algorithm?

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