diff options
Diffstat (limited to 'usr.sbin/xntpd/authstuff/makePC2.c')
| -rw-r--r-- | usr.sbin/xntpd/authstuff/makePC2.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/usr.sbin/xntpd/authstuff/makePC2.c b/usr.sbin/xntpd/authstuff/makePC2.c deleted file mode 100644 index e5121fd..0000000 --- a/usr.sbin/xntpd/authstuff/makePC2.c +++ /dev/null @@ -1,238 +0,0 @@ -/* - * makePC2 - build custom permutted choice 2 tables - */ - -#include <stdio.h> -#include <sys/types.h> - -#include "ntp_stdlib.h" - -#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0) - -char *progname; -int debug; - -static void permc P((u_char *, u_long *)); -static void permd P((u_char *, u_long *)); -static void doit P((void)); - -/* - * main - parse arguments and handle options - */ -void -main(argc, argv) -int argc; -char *argv[]; -{ - int c; - int errflg = 0; - extern int ntp_optind; - extern char *ntp_optarg; - - progname = argv[0]; - while ((c = ntp_getopt(argc, argv, "d")) != EOF) - switch (c) { - case 'd': - ++debug; - break; - default: - errflg++; - break; - } - if (errflg) { - (void) fprintf(stderr, "usage: %s [-d]\n", progname); - exit(2); - } - doit(); - exit(0); -} - -/* - * Permuted choice 2 table. This actually produces the low order 24 - * bits of the subkey Ki from the 28 bit value of Ci. This has had - * 1 subtracted from it to give a zero base. - */ -static u_char PC2_C[24] = { - 13, 16, 10, 23, 0, 4, - 2, 27, 14, 5, 20, 9, - 22, 18, 11, 3, 25, 7, - 15, 6, 26, 19, 12, 1 -}; - -/* - * Permuted choice 2 table, operating on the 28 Di bits to produce the - * high order 24 bits of subkey Ki. This has had 29 subtracted from - * it to give it a zero base into our D bit array. - */ -static u_char PC2_D[24] = { - 12, 23, 2, 8, 18, 26, - 1, 11, 22, 16, 4, 19, - 15, 20, 10, 27, 5, 24, - 17, 13, 21, 7, 0, 3 -}; - -u_long masks[4] = { 0x40000000, 0x400000, 0x4000, 0x40 }; - - -/* - * permc - permute C, producing a four byte result - */ -static void -permc(bits, resp) - u_char *bits; - u_long *resp; -{ - register int part; - register int i; - register u_long mask; - u_char res[24]; - - memset((char *)res, 0, sizeof res); - - for (i = 0; i < 24; i++) { - res[i] = bits[PC2_C[i]]; - } - - *resp = 0; - for (part = 0; part < 4; part++) { - mask = masks[part]; - for (i = part*6; i < (part+1)*6; i++) { - mask >>= 1; - if (res[i]) - *resp |= mask; - } - } -} - -/* - * permd - permute D, producing a four byte result - */ -static void -permd(bits, resp) - u_char *bits; - u_long *resp; -{ - register int part; - register int i; - register u_long mask; - u_char res[24]; - - memset((char *)res, 0, sizeof res); - - for (i = 0; i < 24; i++) { - res[i] = bits[PC2_D[i]]; - } - - *resp = 0; - for (part = 0; part < 4; part++) { - mask = masks[part]; - for (i = part*6; i < (part+1)*6; i++) { - mask >>= 1; - if (res[i]) - *resp |= mask; - } - } -} - - -/* - * bits used for each round in C - */ -static int cbits[4][6] = { - 0, 1, 2, 3, 4, 5, - 6, 7, 9, 10, 11, 12, - 13, 14, 15, 16, 22, 23, - 18, 19, 20, 25, 26, 27 -}; - - -/* - * bits used for each round in D - */ -static int dbits[4][6] = { - 0, 1, 2, 3, 4, 5, - 7, 8, 10, 11, 12, 13, - 15, 16, 17, 18, 19, 20, - 21, 22, 23, 24, 26, 27 -}; - - -/* - * doit - compute and print the four PC1 tables - */ -static void -doit() -{ - int i; - int comb; - u_long res; - u_char bits[28]; - - memset((char *)bits, 0, sizeof bits); - - printf("static u_long PC2_C[4][64] = {"); - for (i = 0; i < 4; i++) { - for (comb = 0; comb < 64; comb++) { - if (comb & 0x20) - bits[cbits[i][0]] = 1; - if (comb & 0x10) - bits[cbits[i][1]] = 1; - if (comb & 0x8) - bits[cbits[i][2]] = 1; - if (comb & 0x4) - bits[cbits[i][3]] = 1; - if (comb & 0x2) - bits[cbits[i][4]] = 1; - if (comb & 0x1) - bits[cbits[i][5]] = 1; - permc(bits, &res); - bits[cbits[i][0]] = 0; - bits[cbits[i][1]] = 0; - bits[cbits[i][2]] = 0; - bits[cbits[i][3]] = 0; - bits[cbits[i][4]] = 0; - bits[cbits[i][5]] = 0; - if ((comb & 0x3) == 0) - printf("\n\t0x%08x,", res); - else if (comb == 63 && i == 3) - printf(" 0x%08x\n};\n\n", res); - else if (comb == 63) - printf(" 0x%08x,\n", res); - else - printf(" 0x%08x,", res); - } - } - - printf("static u_long PC2_D[4][64] = {"); - for (i = 0; i < 4; i++) { - for (comb = 0; comb < 64; comb++) { - if (comb & 0x20) - bits[dbits[i][0]] = 1; - if (comb & 0x10) - bits[dbits[i][1]] = 1; - if (comb & 0x8) - bits[dbits[i][2]] = 1; - if (comb & 0x4) - bits[dbits[i][3]] = 1; - if (comb & 0x2) - bits[dbits[i][4]] = 1; - if (comb & 0x1) - bits[dbits[i][5]] = 1; - permd(bits, &res); - bits[dbits[i][0]] = 0; - bits[dbits[i][1]] = 0; - bits[dbits[i][2]] = 0; - bits[dbits[i][3]] = 0; - bits[dbits[i][4]] = 0; - bits[dbits[i][5]] = 0; - if ((comb & 0x3) == 0) - printf("\n\t0x%08x,", res); - else if (comb == 63 && i == 3) - printf(" 0x%08x\n};\n\n", res); - else if (comb == 63) - printf(" 0x%08x,\n", res); - else - printf(" 0x%08x,", res); - } - } -} |
