Explain how cryptographic mechanisms can be used to guarantee Confidentiality by encrypting M = 4 using the public key (e; n) = (3; 77) in the RSA cryptosystem.
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- It is to one's benefit to use asymmetric encryption techniques, such as those utilized in public-key cryptography. This is the case, for instance, with [c]cryptography that relies on shared public keys.B. Show the result of encrypting M = 4 using the public key (e; n) = (3; 77) in the RSA cryptosystem.The difference between some block cipher modes of operation, which solely employ encryption, and others, which use both encryption and decryption, can be explained as follows:
- For practical encryption that involves secret message transmission from Alice to Bob, why is the message encrypted with the shared symmetric key rather than Bob's public key? What is the significance of using Bob's public key to encrypt the shared symmetric key?Asymmetric ciphers are more secure because of their asymmetric operations, which can't be reversed. This chapter taught you about many types of asymmetric operations. If so, what asymmetric operations can you come up with?Consider a large institution that has 16891 employees. How many keys are necessary to allow any pair of employees to securely communicate using a symmetric cipher? Suppose that we instead use an asymmetric cryptographic scheme. How many keys are required in this case?
- In a system an RSA algorithm with p=5 and q=11, is implemented for data security. What is the value of the decryption key if the value of the encryption key is 27?Public key cryptography faced the challenge of distributing keys in the beginning. To easily show how key distribution may be carried out, why not use an example?Utilizing asymmetric encryption methods, such as those used in public-key cryptography, is something that will prove to be beneficial to the user. An illustration of this would be the use of public keys in cryptography.
- In block ciphers, if we use AES for encryption, it does not matter whether the cipher is CBC-based or ECB-based (both will have equally strong results). true or falseConsider the RSA cryptosystem. If we take P=13 and Q=19 then: 1. What could be the possible value of e , if we take e < 15 ? Calculate a suitable d for the e you have selected above.Please enumerate and elaborate on the ideal qualities of a cryptographic hash function.