Lines Matching defs:PC2
212 * PC1ROT: MSB->LSB, PC1 permutation, rotate, and PC2 permutation.
215 * PC2ROT[0]: Inverse PC2 permutation, rotate, and PC2 permutation.
219 * next by using a transformation that "undoes" the PC2 permutation,
220 * rotates the code, and then applies PC2. Unfortunately, PC2
221 * transforms 56 bits into 48 bits, dropping 8 bits, so PC2 is not
222 * invertible. We get around that problem by using a modified PC2
371 /* note: each "row" of PC2 is left-padded with bits that make it invertible */
372 static unsigned char PC2[] = { /* permuted choice table 2 */
522 * PC1ROT - bit reverse, then PC1, then Rotate, then PC2.
527 if ((k = PC2[i]) == 0)
545 * PC2ROT - PC2 inverse, then Rotate (once or twice), then PC2.
552 if ((k = PC2[i]) == 0)
557 if ((k = PC2[i]) == 0)