COMPUTER ETHICS AND SECURITY
CRYPTOGRAPHY AND ENCRYPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Suppose the RSA cyrptosystem is used with public key (35, 7). What is the corresponding cipher text when the plaintext “2” is sent?
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27mod35
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23
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12
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72mod35
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Explanation:
Detailed explanation-1: -RSA algorithm uses the following procedure to generate public and private keys: Select two large prime numbers, p and q. Multiply these numbers to find n = p x q, where n is called the modulus for encryption and decryption. If n = p x q, then the public key is <e, n>.
Detailed explanation-2: -The correct answer is transposition ciphers.
Detailed explanation-3: -Choose two large prime numbers P and Q. Calculate N = P x Q. Choose the public key (i.e., the encryption key) E such that it is not an element of (P-1) x (Q – 1) Choose the private key (i.e., the decryption key) D including the following equation is true: More items •16-Mar-2022
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