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Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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convert the following pseudo code into c++ code

 

from random import randrange, getrandbits def is_prime(n, k=128): " Test if a number is prime Args: n- int - the number to test k- int- the number of tests to do return True if n is prime # Test if n is not even. # But care, 2 is prime! if n == 2 or n== 3: return True if n c= 1 or n % 2== 0: return False # find r and s S=0 r=n-1 while r&1 == 0: s+ 1 r//= 2 # do k tests for _ in range(k): a = randrange(2, n - 1) x = pow(a, r, n) if x != 1 and x !=n-1: j=1 while j<s and x I-n - 1: x = pow(x, 2, n) if x == 1: return False if x !=n-1: return False return True def generate_prime_candidate(length): " Generate an odd integer randomly Args: length - int - the length of the number to generate, in bits return a integer # generate random bits p= getrandbits(length) # apply a mask to set MSB and LSB to 1 Pl= (1 <« length - 1) |1 return p def generate prime_number(length=1024): *Generate a prime Args: length – int - length of the prime to generate, in return a prime bits p=4 # keep generating while the primality test fail while not is_prime(p, 128): p= generate_prime_candidate(length) return p print(generate.prime_number()|
Transcribed Image Text:from random import randrange, getrandbits def is_prime(n, k=128): " Test if a number is prime Args: n- int - the number to test k- int- the number of tests to do return True if n is prime # Test if n is not even. # But care, 2 is prime! if n == 2 or n== 3: return True if n c= 1 or n % 2== 0: return False # find r and s S=0 r=n-1 while r&1 == 0: s+ 1 r//= 2 # do k tests for _ in range(k): a = randrange(2, n - 1) x = pow(a, r, n) if x != 1 and x !=n-1: j=1 while j<s and x I-n - 1: x = pow(x, 2, n) if x == 1: return False if x !=n-1: return False return True def generate_prime_candidate(length): " Generate an odd integer randomly Args: length - int - the length of the number to generate, in bits return a integer # generate random bits p= getrandbits(length) # apply a mask to set MSB and LSB to 1 Pl= (1 <« length - 1) |1 return p def generate prime_number(length=1024): *Generate a prime Args: length – int - length of the prime to generate, in return a prime bits p=4 # keep generating while the primality test fail while not is_prime(p, 128): p= generate_prime_candidate(length) return p print(generate.prime_number()|
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