In a public key cryptosystem using RSA algorithm, a user ases two prime numbers 11 and 17. He chooses 7 as the encryption key, e. 12. Find the decription key. d%3= Show your work here: 13. What are the private key and public key? public key {e, n}: private key {d, n): DFocus

Determine if 21000 + 297 or 21000 + 277 or 21000 + 291 is prime.

How many 4-letter passwords can you form from the letters A, B, C, D, E, F, G, H, with no letter repeated?  a. 8! = 40320 b. 8!/4 = 10080 c. None of the other answers is correct. d. (8/4)! = 2! = 2 e. 8! / 4! = 1680

Encrypt "Meet me at Central train station" using AutoKey Cipher. The key is "H".

Outside a​ home, there is a 9​-key keypad with letters A, B, C, D, E, F, G, H, and I that can be used to open the garage if the correct nine​-letter code is entered. Each key may be used only once. How many codes are​ possible?   The number of possible codes is_____

Suppose each license plate in a certain state has one digit, followed by four letters, followed by one digit. The letters F, O, S, and X and the digit 0 are not used. So, there are 22 letters and 9 digits that are used. Assume that the letters and digits can be repeated. How many license plates can be generated using this format? license plates Continue X Ś ? hp Submit Assignment Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility 2

A lock code has 4 digits in a specific order, the digits are between 0-9 (so 10 total numbers to pick from). 1. How many different lock codes can there be if the digits can be repeated? For example, a code can be 0000. 2. Explain how you got your answer. 3. How many different lock codes are there if each digit may only be used once? For example, a code can not be 0103 because 0 cannot be used more than once. Explain your thinking. 4. Explain how you got your answer.