23 lines
450 B
Plaintext
23 lines
450 B
Plaintext
Distributing keys to A people, where
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B people are required to unlock, requires:
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A choose B-1 keys.
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We can distribute following possible combinations:
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Ex: 5 people, 2 required: 5 C 3 = 10
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0123
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012 4
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01 34
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0 234
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1234
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We obtain A choose B-1, from seeing that we require
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the combinations to be generated from A-B+1.
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This is obtained from A-G+1 = B,
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People - GroupSize + 1 = Required,
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G = A-B+1
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A choose A-B+1 = A choose B-1
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