| 摘要 |
The invention concerns a cryptographic device and method for generating pseudo-random numbers (1), including the following steps: subdividing initial data (1) into a plurality of words (3) with definite b- bits in a finite body GF(2<SUP>b</SUP> ), assigning said words to cells (5) of a status board (7) to form an initial status block (13a); assembling the cells (5) of said status board (7) to assign a group (11) of cells to each set of d /b words, wherein d is a multiple of b strictly higher than b; and iteratively generating from said initial status block (13a), a succession of status blocks (13b) to form a final status block (13c), such that upon each iteration each set of d/b words of a current status block (13b) is replaced by at least another set of d/b words, using, to form a next status block, at least one reference table (9) comprising substitution elements with d-bits. |
