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- #include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
- extern long read(int, void*, long);
- typedef unsigned char uchar;
- typedef unsigned long ulong;
- #define NAMELEN 28
- /*********** auth.h ************/
- typedef struct Ticket Ticket;
- typedef struct Ticketreq Ticketreq;
- typedef struct Authenticator Authenticator;
- typedef struct Nvrsafe Nvrsafe;
- typedef struct Passwordreq Passwordreq;
- typedef struct Chalstate Chalstate;
- enum
- {
- DOMLEN= 48, /* length of an authentication domain name */
- DESKEYLEN= 7, /* length of a des key for encrypt/decrypt */
- CHALLEN= 8, /* length of a challenge */
- NETCHLEN= 16, /* max network challenge length */
- CONFIGLEN= 14,
- KEYDBLEN= NAMELEN+DESKEYLEN+4+2
- };
- /* encryption numberings (anti-replay) */
- enum
- {
- AuthTreq=1, /* ticket request */
- AuthChal=2, /* challenge box request */
- AuthPass=3, /* change password */
- AuthOK=4, /* reply follows */
- AuthErr=5, /* error follows */
- AuthTs=64, /* ticket encrypted with server's key */
- AuthTc, /* ticket encrypted with client's key */
- AuthAs, /* server generated authenticator */
- AuthAc /* client generated authenticator */
- };
- struct Ticketreq
- {
- char type;
- char authid[NAMELEN]; /* server's encryption id */
- char authdom[DOMLEN]; /* server's authentication domain */
- char chal[CHALLEN]; /* challenge from server */
- char hostid[NAMELEN]; /* host's encryption id */
- char uid[NAMELEN]; /* uid of requesting user on host */
- };
- #define TICKREQLEN (3*NAMELEN+CHALLEN+DOMLEN+1)
- struct Ticket
- {
- char num; /* replay protection */
- char chal[CHALLEN]; /* server challenge */
- char cuid[NAMELEN]; /* uid on client */
- char suid[NAMELEN]; /* uid on server */
- char key[DESKEYLEN]; /* nonce DES key */
- };
- #define TICKETLEN (CHALLEN+2*NAMELEN+DESKEYLEN+1)
- struct Authenticator
- {
- char num; /* replay protection */
- char chal[CHALLEN];
- ulong id; /* authenticator id, ++'d with each auth */
- };
- #define AUTHENTLEN (CHALLEN+4+1)
- struct Passwordreq
- {
- char num;
- char old[NAMELEN];
- char new[NAMELEN];
- };
- #define PASSREQLEN (2*NAMELEN+1)
- struct Nvrsafe
- {
- char machkey[DESKEYLEN];
- uchar machsum;
- char authkey[DESKEYLEN];
- uchar authsum;
- char config[CONFIGLEN];
- uchar configsum;
- char authid[NAMELEN];
- uchar authidsum;
- char authdom[DOMLEN];
- uchar authdomsum;
- };
- struct Chalstate
- {
- int afd; /* /dev/authenticate */
- int asfd; /* authdial() */
- char chal[NETCHLEN]; /* challenge/response */
- };
- /************ crypt.c *************/
- /*
- * Data Encryption Standard
- * D.P.Mitchell 83/06/08.
- *
- * block_cipher(key, block, decrypting)
- */
- static long ip_low(char [8]);
- static long ip_high(char [8]);
- static void fp(long, long, char[8]);
- static void key_setup(char[DESKEYLEN], char[128]);
- static void block_cipher(char[128], char[8], int);
- /*
- * destructively encrypt the buffer, which
- * must be at least 8 characters long.
- */
- int
- encrypt9(void *key, void *vbuf, int n)
- {
- char ekey[128], *buf;
- int i, r;
- if(n < 8)
- return 0;
- key_setup(key, ekey);
- buf = vbuf;
- n--;
- r = n % 7;
- n /= 7;
- for(i = 0; i < n; i++){
- block_cipher(ekey, buf, 0);
- buf += 7;
- }
- if(r)
- block_cipher(ekey, buf - 7 + r, 0);
- return 1;
- }
- /*
- * destructively decrypt the buffer, which
- * must be at least 8 characters long.
- */
- int
- decrypt(void *key, void *vbuf, int n)
- {
- char ekey[128], *buf;
- int i, r;
- if(n < 8)
- return 0;
- key_setup(key, ekey);
- buf = vbuf;
- n--;
- r = n % 7;
- n /= 7;
- buf += n * 7;
- if(r)
- block_cipher(ekey, buf - 7 + r, 1);
- for(i = 0; i < n; i++){
- buf -= 7;
- block_cipher(ekey, buf, 1);
- }
- return 1;
- }
- /*
- * Tables for Combined S and P Boxes
- */
- static long s0p[] = {
- 0x00410100,0x00010000,0x40400000,0x40410100,0x00400000,0x40010100,0x40010000,0x40400000,
- 0x40010100,0x00410100,0x00410000,0x40000100,0x40400100,0x00400000,0x00000000,0x40010000,
- 0x00010000,0x40000000,0x00400100,0x00010100,0x40410100,0x00410000,0x40000100,0x00400100,
- 0x40000000,0x00000100,0x00010100,0x40410000,0x00000100,0x40400100,0x40410000,0x00000000,
- 0x00000000,0x40410100,0x00400100,0x40010000,0x00410100,0x00010000,0x40000100,0x00400100,
- 0x40410000,0x00000100,0x00010100,0x40400000,0x40010100,0x40000000,0x40400000,0x00410000,
- 0x40410100,0x00010100,0x00410000,0x40400100,0x00400000,0x40000100,0x40010000,0x00000000,
- 0x00010000,0x00400000,0x40400100,0x00410100,0x40000000,0x40410000,0x00000100,0x40010100,
- };
- static long s1p[] = {
- 0x08021002,0x00000000,0x00021000,0x08020000,0x08000002,0x00001002,0x08001000,0x00021000,
- 0x00001000,0x08020002,0x00000002,0x08001000,0x00020002,0x08021000,0x08020000,0x00000002,
- 0x00020000,0x08001002,0x08020002,0x00001000,0x00021002,0x08000000,0x00000000,0x00020002,
- 0x08001002,0x00021002,0x08021000,0x08000002,0x08000000,0x00020000,0x00001002,0x08021002,
- 0x00020002,0x08021000,0x08001000,0x00021002,0x08021002,0x00020002,0x08000002,0x00000000,
- 0x08000000,0x00001002,0x00020000,0x08020002,0x00001000,0x08000000,0x00021002,0x08001002,
- 0x08021000,0x00001000,0x00000000,0x08000002,0x00000002,0x08021002,0x00021000,0x08020000,
- 0x08020002,0x00020000,0x00001002,0x08001000,0x08001002,0x00000002,0x08020000,0x00021000,
- };
- static long s2p[] = {
- 0x20800000,0x00808020,0x00000020,0x20800020,0x20008000,0x00800000,0x20800020,0x00008020,
- 0x00800020,0x00008000,0x00808000,0x20000000,0x20808020,0x20000020,0x20000000,0x20808000,
- 0x00000000,0x20008000,0x00808020,0x00000020,0x20000020,0x20808020,0x00008000,0x20800000,
- 0x20808000,0x00800020,0x20008020,0x00808000,0x00008020,0x00000000,0x00800000,0x20008020,
- 0x00808020,0x00000020,0x20000000,0x00008000,0x20000020,0x20008000,0x00808000,0x20800020,
- 0x00000000,0x00808020,0x00008020,0x20808000,0x20008000,0x00800000,0x20808020,0x20000000,
- 0x20008020,0x20800000,0x00800000,0x20808020,0x00008000,0x00800020,0x20800020,0x00008020,
- 0x00800020,0x00000000,0x20808000,0x20000020,0x20800000,0x20008020,0x00000020,0x00808000,
- };
- static long s3p[] = {
- 0x00080201,0x02000200,0x00000001,0x02080201,0x00000000,0x02080000,0x02000201,0x00080001,
- 0x02080200,0x02000001,0x02000000,0x00000201,0x02000001,0x00080201,0x00080000,0x02000000,
- 0x02080001,0x00080200,0x00000200,0x00000001,0x00080200,0x02000201,0x02080000,0x00000200,
- 0x00000201,0x00000000,0x00080001,0x02080200,0x02000200,0x02080001,0x02080201,0x00080000,
- 0x02080001,0x00000201,0x00080000,0x02000001,0x00080200,0x02000200,0x00000001,0x02080000,
- 0x02000201,0x00000000,0x00000200,0x00080001,0x00000000,0x02080001,0x02080200,0x00000200,
- 0x02000000,0x02080201,0x00080201,0x00080000,0x02080201,0x00000001,0x02000200,0x00080201,
- 0x00080001,0x00080200,0x02080000,0x02000201,0x00000201,0x02000000,0x02000001,0x02080200,
- };
- static long s4p[] = {
- 0x01000000,0x00002000,0x00000080,0x01002084,0x01002004,0x01000080,0x00002084,0x01002000,
- 0x00002000,0x00000004,0x01000004,0x00002080,0x01000084,0x01002004,0x01002080,0x00000000,
- 0x00002080,0x01000000,0x00002004,0x00000084,0x01000080,0x00002084,0x00000000,0x01000004,
- 0x00000004,0x01000084,0x01002084,0x00002004,0x01002000,0x00000080,0x00000084,0x01002080,
- 0x01002080,0x01000084,0x00002004,0x01002000,0x00002000,0x00000004,0x01000004,0x01000080,
- 0x01000000,0x00002080,0x01002084,0x00000000,0x00002084,0x01000000,0x00000080,0x00002004,
- 0x01000084,0x00000080,0x00000000,0x01002084,0x01002004,0x01002080,0x00000084,0x00002000,
- 0x00002080,0x01002004,0x01000080,0x00000084,0x00000004,0x00002084,0x01002000,0x01000004,
- };
- static long s5p[] = {
- 0x10000008,0x00040008,0x00000000,0x10040400,0x00040008,0x00000400,0x10000408,0x00040000,
- 0x00000408,0x10040408,0x00040400,0x10000000,0x10000400,0x10000008,0x10040000,0x00040408,
- 0x00040000,0x10000408,0x10040008,0x00000000,0x00000400,0x00000008,0x10040400,0x10040008,
- 0x10040408,0x10040000,0x10000000,0x00000408,0x00000008,0x00040400,0x00040408,0x10000400,
- 0x00000408,0x10000000,0x10000400,0x00040408,0x10040400,0x00040008,0x00000000,0x10000400,
- 0x10000000,0x00000400,0x10040008,0x00040000,0x00040008,0x10040408,0x00040400,0x00000008,
- 0x10040408,0x00040400,0x00040000,0x10000408,0x10000008,0x10040000,0x00040408,0x00000000,
- 0x00000400,0x10000008,0x10000408,0x10040400,0x10040000,0x00000408,0x00000008,0x10040008,
- };
- static long s6p[] = {
- 0x00000800,0x00000040,0x00200040,0x80200000,0x80200840,0x80000800,0x00000840,0x00000000,
- 0x00200000,0x80200040,0x80000040,0x00200800,0x80000000,0x00200840,0x00200800,0x80000040,
- 0x80200040,0x00000800,0x80000800,0x80200840,0x00000000,0x00200040,0x80200000,0x00000840,
- 0x80200800,0x80000840,0x00200840,0x80000000,0x80000840,0x80200800,0x00000040,0x00200000,
- 0x80000840,0x00200800,0x80200800,0x80000040,0x00000800,0x00000040,0x00200000,0x80200800,
- 0x80200040,0x80000840,0x00000840,0x00000000,0x00000040,0x80200000,0x80000000,0x00200040,
- 0x00000000,0x80200040,0x00200040,0x00000840,0x80000040,0x00000800,0x80200840,0x00200000,
- 0x00200840,0x80000000,0x80000800,0x80200840,0x80200000,0x00200840,0x00200800,0x80000800,
- };
- static long s7p[] = {
- 0x04100010,0x04104000,0x00004010,0x00000000,0x04004000,0x00100010,0x04100000,0x04104010,
- 0x00000010,0x04000000,0x00104000,0x00004010,0x00104010,0x04004010,0x04000010,0x04100000,
- 0x00004000,0x00104010,0x00100010,0x04004000,0x04104010,0x04000010,0x00000000,0x00104000,
- 0x04000000,0x00100000,0x04004010,0x04100010,0x00100000,0x00004000,0x04104000,0x00000010,
- 0x00100000,0x00004000,0x04000010,0x04104010,0x00004010,0x04000000,0x00000000,0x00104000,
- 0x04100010,0x04004010,0x04004000,0x00100010,0x04104000,0x00000010,0x00100010,0x04004000,
- 0x04104010,0x00100000,0x04100000,0x04000010,0x00104000,0x00004010,0x04004010,0x04100000,
- 0x00000010,0x04104000,0x00104010,0x00000000,0x04000000,0x04100010,0x00004000,0x00104010,
- };
- /*
- * DES electronic codebook encryption of one block
- */
- static void
- block_cipher(char expanded_key[128], char text[8], int decrypting)
- {
- char *key;
- long crypto, temp, right, left;
- int i, key_offset;
- key = expanded_key;
- left = ip_low(text);
- right = ip_high(text);
- if (decrypting) {
- key_offset = 16;
- key = key + 128 - 8;
- } else
- key_offset = 0;
- for (i = 0; i < 16; i++) {
- temp = (right << 1) | ((right >> 31) & 1);
- crypto = s0p[(temp & 0x3f) ^ *key++];
- crypto |= s1p[((temp >> 4) & 0x3f) ^ *key++];
- crypto |= s2p[((temp >> 8) & 0x3f) ^ *key++];
- crypto |= s3p[((temp >> 12) & 0x3f) ^ *key++];
- crypto |= s4p[((temp >> 16) & 0x3f) ^ *key++];
- crypto |= s5p[((temp >> 20) & 0x3f) ^ *key++];
- crypto |= s6p[((temp >> 24) & 0x3f) ^ *key++];
- temp = ((right & 1) << 5) | ((right >> 27) & 0x1f);
- crypto |= s7p[temp ^ *key++];
- temp = left;
- left = right;
- right = temp ^ crypto;
- key -= key_offset;
- }
- /*
- * standard final permutation (IPI)
- * left and right are reversed here
- */
- fp(right, left, text);
- }
- /*
- * Initial Permutation
- */
- static long iptab[] = {
- 0x00000000, 0x00008000, 0x00000000, 0x00008000,
- 0x00000080, 0x00008080, 0x00000080, 0x00008080
- };
- static long
- ip_low(char block[8])
- {
- int i;
- long l;
- l = 0;
- for(i = 0; i < 8; i++){
- l |= iptab[(block[i] >> 4) & 7] >> i;
- l |= iptab[block[i] & 7] << (16 - i);
- }
- return l;
- }
- static long
- ip_high(char block[8])
- {
- int i;
- long l;
- l = 0;
- for(i = 0; i < 8; i++){
- l |= iptab[(block[i] >> 5) & 7] >> i;
- l |= iptab[(block[i] >> 1) & 7] << (16 - i);
- }
- return l;
- }
- /*
- * Final Permutation
- */
- static unsigned long fptab[] = {
- 0x00000000,0x80000000,0x00800000,0x80800000,0x00008000,0x80008000,0x00808000,0x80808000,
- 0x00000080,0x80000080,0x00800080,0x80800080,0x00008080,0x80008080,0x00808080,0x80808080,
- };
- static void
- fp(long left, long right, char text[8])
- {
- unsigned long ta[2], t, v[2];
- int i, j, sh;
- ta[0] = right;
- ta[1] = left;
- v[0] = v[1] = 0;
- for(i = 0; i < 2; i++){
- t = ta[i];
- sh = i;
- for(j = 0; j < 4; j++){
- v[1] |= fptab[t & 0xf] >> sh;
- t >>= 4;
- v[0] |= fptab[t & 0xf] >> sh;
- t >>= 4;
- sh += 2;
- }
- }
- for(i = 0; i < 2; i++)
- for(j = 0; j < 4; j++){
- *text++ = (char)(v[i]&0xff);
- v[i] >>= 8;
- }
- }
- /*
- * Key set-up
- */
- static uchar keyexpand[][15][2] = {
- { 3, 2, 9, 8, 18, 8, 27, 32, 33, 2, 42, 16, 48, 8, 65, 16,
- 74, 2, 80, 2, 89, 4, 99, 16, 104, 4, 122, 32, 0, 0, },
- { 1, 4, 8, 1, 18, 4, 25, 32, 34, 32, 41, 8, 50, 8, 59, 32,
- 64, 16, 75, 4, 90, 1, 97, 16, 106, 2, 112, 2, 123, 1, },
- { 2, 1, 19, 8, 35, 1, 40, 1, 50, 4, 57, 32, 75, 2, 80, 32,
- 89, 1, 96, 16, 107, 4, 120, 8, 0, 0, 0, 0, 0, 0, },
- { 4, 32, 20, 2, 31, 4, 37, 32, 47, 1, 54, 1, 63, 2, 68, 1,
- 78, 4, 84, 8, 101, 16, 108, 4, 119, 16, 126, 8, 0, 0, },
- { 5, 4, 15, 4, 21, 32, 31, 1, 38, 1, 47, 2, 53, 2, 68, 8,
- 85, 16, 92, 4, 103, 16, 108, 32, 118, 32, 124, 2, 0, 0, },
- { 15, 2, 21, 2, 39, 8, 46, 16, 55, 32, 61, 1, 71, 16, 76, 32,
- 86, 32, 93, 4, 102, 2, 108, 16, 117, 8, 126, 1, 0, 0, },
- { 14, 16, 23, 32, 29, 1, 38, 8, 52, 2, 63, 4, 70, 2, 76, 16,
- 85, 8, 100, 1, 110, 4, 116, 8, 127, 8, 0, 0, 0, 0, },
- { 1, 8, 8, 32, 17, 1, 24, 16, 35, 4, 50, 1, 57, 16, 67, 8,
- 83, 1, 88, 1, 98, 4, 105, 32, 114, 32, 123, 2, 0, 0, },
- { 0, 1, 11, 16, 16, 4, 35, 2, 40, 32, 49, 1, 56, 16, 65, 2,
- 74, 16, 80, 8, 99, 8, 115, 1, 121, 4, 0, 0, 0, 0, },
- { 9, 16, 18, 2, 24, 2, 33, 4, 43, 16, 48, 4, 66, 32, 73, 8,
- 82, 8, 91, 32, 97, 2, 106, 16, 112, 8, 122, 1, 0, 0, },
- { 14, 32, 21, 4, 30, 2, 36, 16, 45, 8, 60, 1, 69, 2, 87, 8,
- 94, 16, 103, 32, 109, 1, 118, 8, 124, 32, 0, 0, 0, 0, },
- { 7, 4, 14, 2, 20, 16, 29, 8, 44, 1, 54, 4, 60, 8, 71, 8,
- 78, 16, 87, 32, 93, 1, 102, 8, 116, 2, 125, 4, 0, 0, },
- { 7, 2, 12, 1, 22, 4, 28, 8, 45, 16, 52, 4, 63, 16, 70, 8,
- 84, 2, 95, 4, 101, 32, 111, 1, 118, 1, 0, 0, 0, 0, },
- { 6, 16, 13, 16, 20, 4, 31, 16, 36, 32, 46, 32, 53, 4, 62, 2,
- 69, 32, 79, 1, 86, 1, 95, 2, 101, 2, 119, 8, 0, 0, },
- { 0, 32, 10, 8, 19, 32, 25, 2, 34, 16, 40, 8, 59, 8, 66, 2,
- 72, 2, 81, 4, 91, 16, 96, 4, 115, 2, 121, 8, 0, 0, },
- { 3, 16, 10, 4, 17, 32, 26, 32, 33, 8, 42, 8, 51, 32, 57, 2,
- 67, 4, 82, 1, 89, 16, 98, 2, 104, 2, 113, 4, 120, 1, },
- { 1, 16, 11, 8, 27, 1, 32, 1, 42, 4, 49, 32, 58, 32, 67, 2,
- 72, 32, 81, 1, 88, 16, 99, 4, 114, 1, 0, 0, 0, 0, },
- { 6, 32, 12, 2, 23, 4, 29, 32, 39, 1, 46, 1, 55, 2, 61, 2,
- 70, 4, 76, 8, 93, 16, 100, 4, 111, 16, 116, 32, 0, 0, },
- { 6, 2, 13, 32, 23, 1, 30, 1, 39, 2, 45, 2, 63, 8, 77, 16,
- 84, 4, 95, 16, 100, 32, 110, 32, 117, 4, 127, 4, 0, 0, },
- { 4, 1, 13, 2, 31, 8, 38, 16, 47, 32, 53, 1, 62, 8, 68, 32,
- 78, 32, 85, 4, 94, 2, 100, 16, 109, 8, 127, 2, 0, 0, },
- { 5, 16, 15, 32, 21, 1, 30, 8, 44, 2, 55, 4, 61, 32, 68, 16,
- 77, 8, 92, 1, 102, 4, 108, 8, 126, 16, 0, 0, 0, 0, },
- { 2, 8, 9, 1, 16, 16, 27, 4, 42, 1, 49, 16, 58, 2, 75, 1,
- 80, 1, 90, 4, 97, 32, 106, 32, 113, 8, 120, 32, 0, 0, },
- { 2, 4, 8, 4, 27, 2, 32, 32, 41, 1, 48, 16, 59, 4, 66, 16,
- 72, 8, 91, 8, 107, 1, 112, 1, 123, 16, 0, 0, 0, 0, },
- { 3, 8, 10, 2, 16, 2, 25, 4, 35, 16, 40, 4, 59, 2, 65, 8,
- 74, 8, 83, 32, 89, 2, 98, 16, 104, 8, 121, 16, 0, 0, },
- { 4, 2, 13, 4, 22, 2, 28, 16, 37, 8, 52, 1, 62, 4, 79, 8,
- 86, 16, 95, 32, 101, 1, 110, 8, 126, 32, 0, 0, 0, 0, },
- { 5, 32, 12, 16, 21, 8, 36, 1, 46, 4, 52, 8, 70, 16, 79, 32,
- 85, 1, 94, 8, 108, 2, 119, 4, 126, 2, 0, 0, 0, 0, },
- { 5, 2, 14, 4, 20, 8, 37, 16, 44, 4, 55, 16, 60, 32, 76, 2,
- 87, 4, 93, 32, 103, 1, 110, 1, 119, 2, 124, 1, 0, 0, },
- { 7, 32, 12, 4, 23, 16, 28, 32, 38, 32, 45, 4, 54, 2, 60, 16,
- 71, 1, 78, 1, 87, 2, 93, 2, 111, 8, 118, 16, 125, 16, },
- { 1, 1, 11, 32, 17, 2, 26, 16, 32, 8, 51, 8, 64, 2, 73, 4,
- 83, 16, 88, 4, 107, 2, 112, 32, 122, 8, 0, 0, 0, 0, },
- { 0, 4, 9, 32, 18, 32, 25, 8, 34, 8, 43, 32, 49, 2, 58, 16,
- 74, 1, 81, 16, 90, 2, 96, 2, 105, 4, 115, 16, 122, 4, },
- { 2, 2, 19, 1, 24, 1, 34, 4, 41, 32, 50, 32, 57, 8, 64, 32,
- 73, 1, 80, 16, 91, 4, 106, 1, 113, 16, 123, 8, 0, 0, },
- { 3, 4, 10, 16, 16, 8, 35, 8, 51, 1, 56, 1, 67, 16, 72, 4,
- 91, 2, 96, 32, 105, 1, 112, 16, 121, 2, 0, 0, 0, 0, },
- { 4, 16, 15, 1, 22, 1, 31, 2, 37, 2, 55, 8, 62, 16, 69, 16,
- 76, 4, 87, 16, 92, 32, 102, 32, 109, 4, 118, 2, 125, 32, },
- { 6, 4, 23, 8, 30, 16, 39, 32, 45, 1, 54, 8, 70, 32, 77, 4,
- 86, 2, 92, 16, 101, 8, 116, 1, 125, 2, 0, 0, 0, 0, },
- { 4, 4, 13, 1, 22, 8, 36, 2, 47, 4, 53, 32, 63, 1, 69, 8,
- 84, 1, 94, 4, 100, 8, 117, 16, 127, 32, 0, 0, 0, 0, },
- { 3, 32, 8, 16, 19, 4, 34, 1, 41, 16, 50, 2, 56, 2, 67, 1,
- 72, 1, 82, 4, 89, 32, 98, 32, 105, 8, 114, 8, 121, 1, },
- { 1, 32, 19, 2, 24, 32, 33, 1, 40, 16, 51, 4, 64, 8, 83, 8,
- 99, 1, 104, 1, 114, 4, 120, 4, 0, 0, 0, 0, 0, 0, },
- { 8, 2, 17, 4, 27, 16, 32, 4, 51, 2, 56, 32, 66, 8, 75, 32,
- 81, 2, 90, 16, 96, 8, 115, 8, 122, 2, 0, 0, 0, 0, },
- { 2, 16, 18, 1, 25, 16, 34, 2, 40, 2, 49, 4, 59, 16, 66, 4,
- 73, 32, 82, 32, 89, 8, 98, 8, 107, 32, 113, 2, 123, 4, },
- { 7, 1, 13, 8, 28, 1, 38, 4, 44, 8, 61, 16, 71, 32, 77, 1,
- 86, 8, 100, 2, 111, 4, 117, 32, 124, 16, 0, 0, 0, 0, },
- { 12, 8, 29, 16, 36, 4, 47, 16, 52, 32, 62, 32, 68, 2, 79, 4,
- 85, 32, 95, 1, 102, 1, 111, 2, 117, 2, 126, 4, 0, 0, },
- { 5, 1, 15, 16, 20, 32, 30, 32, 37, 4, 46, 2, 52, 16, 61, 8,
- 70, 1, 79, 2, 85, 2, 103, 8, 110, 16, 119, 32, 124, 4, },
- { 0, 16, 9, 2, 18, 16, 24, 8, 43, 8, 59, 1, 65, 4, 75, 16,
- 80, 4, 99, 2, 104, 32, 113, 1, 123, 32, 0, 0, 0, 0, },
- { 10, 32, 17, 8, 26, 8, 35, 32, 41, 2, 50, 16, 56, 8, 66, 1,
- 73, 16, 82, 2, 88, 2, 97, 4, 107, 16, 112, 4, 121, 32, },
- { 0, 2, 11, 1, 16, 1, 26, 4, 33, 32, 42, 32, 49, 8, 58, 8,
- 65, 1, 72, 16, 83, 4, 98, 1, 105, 16, 114, 2, 0, 0, },
- { 8, 8, 27, 8, 43, 1, 48, 1, 58, 4, 64, 4, 83, 2, 88, 32,
- 97, 1, 104, 16, 115, 4, 122, 16, 0, 0, 0, 0, 0, 0, },
- { 5, 8, 14, 1, 23, 2, 29, 2, 47, 8, 54, 16, 63, 32, 68, 4,
- 79, 16, 84, 32, 94, 32, 101, 4, 110, 2, 116, 16, 127, 1, },
- { 4, 8, 15, 8, 22, 16, 31, 32, 37, 1, 46, 8, 60, 2, 69, 4,
- 78, 2, 84, 16, 93, 8, 108, 1, 118, 4, 0, 0, 0, 0, },
- { 7, 16, 14, 8, 28, 2, 39, 4, 45, 32, 55, 1, 62, 1, 76, 1,
- 86, 4, 92, 8, 109, 16, 116, 4, 125, 1, 0, 0, 0, 0, },
- { 1, 2, 11, 4, 26, 1, 33, 16, 42, 2, 48, 2, 57, 4, 64, 1,
- 74, 4, 81, 32, 90, 32, 97, 8, 106, 8, 115, 32, 120, 16, },
- { 2, 32, 11, 2, 16, 32, 25, 1, 32, 16, 43, 4, 58, 1, 75, 8,
- 91, 1, 96, 1, 106, 4, 113, 32, 0, 0, 0, 0, 0, 0, },
- { 3, 1, 9, 4, 19, 16, 24, 4, 43, 2, 48, 32, 57, 1, 67, 32,
- 73, 2, 82, 16, 88, 8, 107, 8, 120, 2, 0, 0, 0, 0, },
- { 0, 8, 10, 1, 17, 16, 26, 2, 32, 2, 41, 4, 51, 16, 56, 4,
- 65, 32, 74, 32, 81, 8, 90, 8, 99, 32, 105, 2, 114, 16, },
- { 6, 1, 20, 1, 30, 4, 36, 8, 53, 16, 60, 4, 69, 1, 78, 8,
- 92, 2, 103, 4, 109, 32, 119, 1, 125, 8, 0, 0, 0, 0, },
- { 7, 8, 21, 16, 28, 4, 39, 16, 44, 32, 54, 32, 61, 4, 71, 4,
- 77, 32, 87, 1, 94, 1, 103, 2, 109, 2, 124, 8, 0, 0, },
- { 6, 8, 12, 32, 22, 32, 29, 4, 38, 2, 44, 16, 53, 8, 71, 2,
- 77, 2, 95, 8, 102, 16, 111, 32, 117, 1, 127, 16, 0, 0, }
- };
- static void
- key_setup(char key[DESKEYLEN], char *ek)
- {
- int i, j, k, mask;
- uchar (*x)[2];
- memset(ek, 0, 128);
- x = keyexpand[0];
- for(i = 0; i < 7; i++){
- k = key[i];
- for(mask = 0x80; mask; mask >>= 1){
- if(k & mask)
- for(j = 0; j < 15; j++)
- ek[x[j][0]] |= x[j][1];
- x += 15;
- }
- }
- }
- /************ netkey main.c *************/
- int
- passtokey(char *key, char *p)
- {
- uchar buf[NAMELEN], *t;
- int i, n;
- n = strlen(p);
- if(n >= NAMELEN)
- n = NAMELEN-1;
- memset(buf, ' ', 8);
- t = buf;
- strncpy((char*)t, p, n);
- t[n] = '\0';
- memset(key, 0, DESKEYLEN);
- for(;;){
- for(i = 0; i < DESKEYLEN; i++)
- key[i] = (t[i] >> i) + (t[i+1] << (8 - (i+1)));
- if(n <= 8)
- return 1;
- n -= 8;
- t += 8;
- if(n < 8){
- t -= 8 - n;
- n = 8;
- }
- encrypt9(key, t, 8);
- }
- return 1; /* not reached */
- }
- int
- netcrypt(void *key, void *chal)
- {
- uchar buf[8], *p;
- strncpy((char*)buf, chal, 7);
- buf[7] = '\0';
- for(p = buf; *p && *p != '\n'; p++)
- ;
- *p = '\0';
- encrypt9(key, buf, 8);
- sprintf(chal, "%.2x%.2x%.2x%.2x", buf[0], buf[1], buf[2], buf[3]);
- return 1;
- }
- void
- main(int argc, char *argv[])
- {
- char buf[32], pass[32], key[DESKEYLEN];
- int n;
- printf("Run this directly on the local processor, NOT in a\n");
- printf(" window to a computer across the network.\n");
- printf("Type when no one else is looking.\n\n");
- printf("password: ");
- fflush(stdout);
- n = read(0, pass, sizeof pass - 1);
- if(n <= 0)
- exit(0);
- pass[n] = 0;
- if(pass[n-1]=='\n')
- pass[--n] = 0;
- if(pass[n-1]=='\r')
- pass[--n] = 0;
- passtokey(key,pass);
- for(;;){
- printf("challenge: ");
- fflush(stdout);
- n = read(0, buf, sizeof buf - 1);
- if(n <= 0)
- exit(0);
- buf[n] = '\0';
- netcrypt(key, buf);
- printf("response: %s\n", buf);
- }
- }
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