| 摘要 |
The cryptographically secure pseudo-random bit generator (100) includes a front-end generator (102), a selector (104), a random function processor (106), a graph processor (108), and a bit-wise exclusive-or circuit (110). This cryptographically secure pseudo-random bit generator (100) stretches bit strings by the use of certain one-way functions acting on the bit strings. In addition, bit strings are generated from other input bit strings using expander graphs. The stretched bit strings and the bit strings from the expander graphs are combined in the bit-wise exclusive-or circuit.
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