| 摘要 |
An encryption key is formed by a method and apparatus that read a sequence o f bytes from a memory (510). The sequence of bytes, which is larger than the number of bytes in the encryption key, is randomly ordered due to the source of the sequence. Each byte in the sequence is assigned to one of a number of groups where the number of groups is defined by the number of bytes in the encryption key (512). Each group is then reduced to a single byte (514) to form one of the bytes of the encryption key (516).
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