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34 lines
536 B
Python
Executable File
34 lines
536 B
Python
Executable File
#!/usr/bin/python
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import math
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import random
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import sys
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from finding_prime import finding_prime_sqrt
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def generate_prime(number=3):
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''' return a n-bit prime '''
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while 1:
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p = random.randint(pow(2, number-2), pow(2, number-1)-1)
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p = 2 * p + 1
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if finding_prime_sqrt(p):
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return p
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print ("Usage: generate_prime.py number")
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sys.exit()
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else:
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number = int(sys.argv[1])
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print(generate_prime(number))
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