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fcrypt.c

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/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/des/fcrypt.c

Source code

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1 /* $OpenBSD: fcrypt.c,v 1.12 2016/12/26 21:30:10 jca Exp $ */ -

2 -

3 #include <stdio.h> -

4 -

5 /* This version of crypt has been developed from my MIT compatible -

6 * DES library. -

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 than 8 bytes like HP-UX 10.x it used. The MAXPLEN -

14 * definition is the maximum of length 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 char *DES_crypt(const char *buf, const char *salt) -

55 { -

56 static char buff[14]; -

57 -

return(DES_fcrypt(buf,salt,buff));

executed 2 times by 1 test: return(DES_fcrypt(buf,salt,buff));

Executed by:

destest

59 } -

60 -

61 -

62 char *DES_fcrypt(const char *buf, const char *salt, char *ret) -

63 { -

64 unsigned int i,j,x,y; -

65 DES_LONG Eswap0,Eswap1; -

66 DES_LONG out[2],ll; -

67 DES_cblock key; -

68 DES_key_schedule ks; -

69 unsigned char bb[9]; -

70 unsigned char *b=bb; -

71 unsigned char c,u; -

72 -

73 /* eay 25/08/92 -

74 * If you call crypt("pwd","*") as often happens when you -

75 * have * as the pwd field in /etc/passwd, the function -

76 * returns *\0xxxxxxxxx -

77 * The \0 makes the string look like * so the pwd "*" would -

78 * crypt to "*". This was found when replacing the crypt in -

79 * our shared libraries. People found that the disabled -

80 * accounts effectively had no passwd :-(. */ -

x=ret[0]=((salt[0] == '\0')?'A':salt[0]);

(salt[0] == '\0')	Description
TRUE	never evaluated
FALSE	evaluated 2 times by 1 test Evaluated by: destest

0-2

82 Eswap0=con_salt[x]<<2; -

x=ret[1]=((salt[1] == '\0')?'A':salt[1]);

(salt[1] == '\0')	Description
TRUE	never evaluated
FALSE	evaluated 2 times by 1 test Evaluated by: destest

0-2

84 Eswap1=con_salt[x]<<6; -

85 /* EAY -

86 r=strlen(buf); -

87 r=(r+7)/8; -

88 */ -

for (i=0; i<8; i++)

i<8	Description
TRUE	evaluated 16 times by 1 test Evaluated by: destest
FALSE	evaluated 1 time by 1 test Evaluated by: destest

1-16

90 { -

91 c= *(buf++); -

if (!c) break;

executed 1 time by 1 test: break;

Executed by:

destest

!c	Description
TRUE	evaluated 1 time by 1 test Evaluated by: destest
FALSE	evaluated 15 times by 1 test Evaluated by: destest

1-15

93 key[i]=(c<<1); -

}

executed 15 times by 1 test: end of block

Executed by:

destest

for (; i<8; i++)

i<8	Description
TRUE	evaluated 1 time by 1 test Evaluated by: destest
FALSE	evaluated 2 times by 1 test Evaluated by: destest

1-2

key[i]=0;

executed 1 time by 1 test: key[i]=0;

Executed by:

destest

97 -

98 DES_set_key_unchecked(&key,&ks); -

99 fcrypt_body(&(out[0]),&ks,Eswap0,Eswap1); -

100 -

101 ll=out[0]; l2c(ll,b); -

102 ll=out[1]; l2c(ll,b); -

103 y=0; -

104 u=0x80; -

105 bb[8]=0; -

106

for (i=2; i<13; i++)

i<13	Description
TRUE	evaluated 22 times by 1 test Evaluated by: destest
FALSE	evaluated 2 times by 1 test Evaluated by: destest

2-22

107 { -

108 c=0; -

109

for (j=0; j<6; j++)

j<6	Description
TRUE	evaluated 132 times by 1 test Evaluated by: destest
FALSE	evaluated 22 times by 1 test Evaluated by: destest

22-132

110 { -

111 c<<=1; -

112

if (bb[y] & u) c|=1;

executed 58 times by 1 test: c|=1;

Executed by:

destest

bb[y] & u	Description
TRUE	evaluated 58 times by 1 test Evaluated by: destest
FALSE	evaluated 74 times by 1 test Evaluated by: destest

58-74

113 u>>=1; -

114

if (!u)

!u	Description
TRUE	evaluated 16 times by 1 test Evaluated by: destest
FALSE	evaluated 116 times by 1 test Evaluated by: destest

16-116

115 { -

116 y++; -

117 u=0x80; -

118

}

executed 16 times by 1 test: end of block

Executed by:

destest

119

}

executed 132 times by 1 test: end of block

Executed by:

destest

132

120 ret[i]=cov_2char[c]; -

121

}

executed 22 times by 1 test: end of block

Executed by:

destest

122 ret[13]='\0'; -

123

return(ret);

executed 2 times by 1 test: return(ret);

Executed by:

destest

124 } -

125 -

Source code

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