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- . . - , . - k- N- , (k + C) mod N - . - , ... C - .

, C = 2, . . 32 ( 33, ). (32 + 2) mod 33 = 1, (: ). , . . , , . . , !

, , - . .

? . , C ? , 1 , , 3, - 1, . , . - . ( {1, 0, 3}), . C , C- ( ). {1, 0, 3} ( - 0, - 1, - 3). , , .

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- ( 1), 1 . ( 5) ( 28, ), (28 + 5) mod 34 = 33, . ( 3), ( 33): (33 + 3) mod 34 = 2, , 0. , ( 1). , ( = 1). . .

, , , .

, , .

? , q = (k + C) mod N, k = (q - C + N) mod N. k - , - , q - , N - , . .

, , , . . , "" "" "". . .
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