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Key Length
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Possible Keys |
40 bits |
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1,099,511,627,776 |
56 bits |
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72,057,594,037,927,900 |
90 bits |
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1,237,940,039,285,380,000,000,000,000 |
128 bits |
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340,282,366,920,938,000,000,000,000,000,000,000,000 |
Keyspace -- the span of available keys. The longer the key-length, the more possible combinations a potential code-breaker would have to test. The table above shows the number of possibilities for common key lengths.
(Source: FreeMarket.Net: Policy Spotlight, October-November 1997, Courtesy of ACP.)
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