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d02b48c6 RE |
1 | /* NOCW */ |
2 | #include <stdio.h> | |
3 | ||
4 | /* This version of crypt has been developed from my MIT compatable | |
5 | * DES library. | |
6 | * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au | |
7 | * Eric Young (eay@cryptsoft.com) | |
8 | */ | |
9 | ||
10 | /* Modification by Jens Kupferschmidt (Cu) | |
11 | * I have included directive PARA for shared memory computers. | |
12 | * I have included a directive LONGCRYPT to using this routine to cipher | |
13 | * passwords with more then 8 bytes like HP-UX 10.x it used. The MAXPLEN | |
14 | * definition is the maximum of lenght of password and can changed. I have | |
15 | * defined 24. | |
16 | */ | |
17 | ||
18 | #include "des_locl.h" | |
19 | ||
20 | /* Added more values to handle illegal salt values the way normal | |
21 | * crypt() implementations do. The patch was sent by | |
22 | * Bjorn Gronvall <bg@sics.se> | |
23 | */ | |
24 | static unsigned const char con_salt[128]={ | |
25 | 0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9, | |
26 | 0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1, | |
27 | 0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9, | |
28 | 0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1, | |
29 | 0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9, | |
30 | 0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x00,0x01, | |
31 | 0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09, | |
32 | 0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A, | |
33 | 0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12, | |
34 | 0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A, | |
35 | 0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22, | |
36 | 0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24, | |
37 | 0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C, | |
38 | 0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34, | |
39 | 0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C, | |
40 | 0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44, | |
41 | }; | |
42 | ||
43 | static unsigned const char cov_2char[64]={ | |
44 | 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, | |
45 | 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, | |
46 | 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, | |
47 | 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, | |
48 | 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, | |
49 | 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, | |
50 | 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, | |
51 | 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A | |
52 | }; | |
53 | ||
54 | #ifndef NOPROTO | |
55 | void fcrypt_body(DES_LONG *out,des_key_schedule ks, | |
56 | DES_LONG Eswap0, DES_LONG Eswap1); | |
57 | ||
dfeab068 | 58 | #if defined(PERL5) || defined(__FreeBSD__) |
d02b48c6 RE |
59 | char *des_crypt(const char *buf,const char *salt); |
60 | #else | |
61 | char *crypt(const char *buf,const char *salt); | |
62 | #endif | |
63 | #else | |
64 | void fcrypt_body(); | |
dfeab068 | 65 | #if defined(PERL5) || defined(__FreeBSD__) |
d02b48c6 RE |
66 | char *des_crypt(); |
67 | #else | |
68 | char *crypt(); | |
69 | #endif | |
70 | #endif | |
71 | ||
dfeab068 | 72 | #if defined(PERL5) || defined(__FreeBSD__) |
6b691a5c | 73 | char *des_crypt(const char *buf, const char *salt) |
d02b48c6 | 74 | #else |
6b691a5c | 75 | char *crypt(const char *buf, const char *salt) |
d02b48c6 RE |
76 | { |
77 | static char buff[14]; | |
78 | ||
79 | return(des_fcrypt(buf,salt,buff)); | |
80 | } | |
81 | ||
82 | ||
6b691a5c | 83 | char *des_fcrypt(const char *buf, const char *salt, char *ret) |
d02b48c6 RE |
84 | { |
85 | unsigned int i,j,x,y; | |
86 | DES_LONG Eswap0,Eswap1; | |
87 | DES_LONG out[2],ll; | |
88 | des_cblock key; | |
89 | des_key_schedule ks; | |
90 | unsigned char bb[9]; | |
91 | unsigned char *b=bb; | |
92 | unsigned char c,u; | |
93 | ||
94 | /* eay 25/08/92 | |
95 | * If you call crypt("pwd","*") as often happens when you | |
96 | * have * as the pwd field in /etc/passwd, the function | |
97 | * returns *\0XXXXXXXXX | |
98 | * The \0 makes the string look like * so the pwd "*" would | |
99 | * crypt to "*". This was found when replacing the crypt in | |
100 | * our shared libraries. People found that the disbled | |
101 | * accounts effectivly had no passwd :-(. */ | |
102 | x=ret[0]=((salt[0] == '\0')?'A':salt[0]); | |
103 | Eswap0=con_salt[x]<<2; | |
104 | x=ret[1]=((salt[1] == '\0')?'A':salt[1]); | |
105 | Eswap1=con_salt[x]<<6; | |
106 | ||
107 | /* EAY | |
108 | r=strlen(buf); | |
109 | r=(r+7)/8; | |
110 | */ | |
111 | for (i=0; i<8; i++) | |
112 | { | |
113 | c= *(buf++); | |
114 | if (!c) break; | |
115 | key[i]=(c<<1); | |
116 | } | |
117 | for (; i<8; i++) | |
118 | key[i]=0; | |
119 | ||
4e31df2c | 120 | des_set_key(key,ks); |
d02b48c6 RE |
121 | fcrypt_body(&(out[0]),ks,Eswap0,Eswap1); |
122 | ||
123 | ll=out[0]; l2c(ll,b); | |
124 | ll=out[1]; l2c(ll,b); | |
125 | y=0; | |
126 | u=0x80; | |
127 | bb[8]=0; | |
128 | for (i=2; i<13; i++) | |
129 | { | |
130 | c=0; | |
131 | for (j=0; j<6; j++) | |
132 | { | |
133 | c<<=1; | |
134 | if (bb[y] & u) c|=1; | |
135 | u>>=1; | |
136 | if (!u) | |
137 | { | |
138 | y++; | |
139 | u=0x80; | |
140 | } | |
141 | } | |
142 | ret[i]=cov_2char[c]; | |
143 | } | |
144 | ret[13]='\0'; | |
145 | return(ret); | |
146 | } | |
147 |