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- from tinysmpc import VirtualMachine, PrivateScalar, SharedScalar
- # Generating generals
- general0 = VirtualMachine('general0')
- general1 = VirtualMachine('general1')
- general2 = VirtualMachine('general2')
- general3 = VirtualMachine('general3')
- # Using a simple number to represent the block for testing purposes
- print('General 0 is the leader and shares block 42...')
- block = PrivateScalar(42, general0)
- shared_block = block.share([general0, general1, general2, general3])
- print(general0)
- print(general1)
- print(general2)
- print(general3)
- print()
- # 1 Stands for vote for, 0 for vote against
- print('Generals vote on the block...')
- general0_vote = PrivateScalar(1, general0)
- general1_vote = PrivateScalar(1, general1)
- general2_vote = PrivateScalar(1, general2)
- general3_vote = PrivateScalar(0, general3)
- shared_general0_vote = general0_vote.share([general0, general1, general2, general3])
- shared_general1_vote = general1_vote.share([general0, general1, general2, general3])
- shared_general2_vote = general2_vote.share([general0, general1, general2, general3])
- shared_general3_vote = general3_vote.share([general0, general1, general2, general3])
- print(general0)
- print(general1)
- print(general2)
- print(general3)
- print()
- # Each general sums votes to notarize block if votes exceed 2n/3
- print('Generals check votes...')
- votes_thresshold = (2*4)/3
- generals_votes_sum = shared_general0_vote + shared_general1_vote + shared_general2_vote + shared_general3_vote
- general0_votes_sum = generals_votes_sum.reconstruct(general0)
- print('General 0 votes sum: {0}'.format(general0_votes_sum.value))
- if (general0_votes_sum.value > votes_thresshold):
- print('General 0 will notarize block')
- else:
- print('General 0 will not notarize block')
-
- general1_votes_sum = generals_votes_sum.reconstruct(general1)
- print('General 1 votes sum: {0}'.format(general1_votes_sum.value))
- if (general1_votes_sum.value > votes_thresshold):
- print('General 1 will notarize block')
- else:
- print('General 1 will not notarize block')
- general2_votes_sum = generals_votes_sum.reconstruct(general2)
- print('General 2 votes sum: {0}'.format(general2_votes_sum.value))
- if (general2_votes_sum.value > votes_thresshold):
- print('General 2 will notarize block')
- else:
- print('General 2 will not notarize block')
- general3_votes_sum = generals_votes_sum.reconstruct(general3)
- print('General 3 votes sum: {0}'.format(general3_votes_sum.value))
- if (general3_votes_sum.value > votes_thresshold):
- print('General 3 will notarize block')
- else:
- print('General 3 will not notarize block')
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