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7.3: Reading Questions

Last updated

Sep 29, 2021
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- 7.2: Public Key Cryptography
- 7.4: Exercises

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1

Use the euler_phi()function in Sage to compute $\phi(893\,456\,123)\text{.}$

2

Use the power_mod()function in Sage to compute $7^{324}\pmod{895}\text{.}$

3

Explain the mathematical basis for saying: encrypting a message using an RSA public key is very simple computationally, while decrypting a communication without the private key is very hard computationally.

4

Explain how in RSA message encoding differs from message verification.

5

Explain how one could be justified in saying that Diffie and Hellman's proposal in 1976 was “revolutionary.”

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