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fcrypt_b.c

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

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1 /* $OpenBSD: fcrypt_b.c,v 1.9 2014/10/28 07:35:58 jsg Exp $ */ -

4 * -

5 * This package is an SSL implementation written -

6 * by Eric Young (eay@cryptsoft.com). -

7 * The implementation was written so as to conform with Netscapes SSL. -

8 * -

9 * This library is free for commercial and non-commercial use as long as -

10 * the following conditions are aheared to. The following conditions -

11 * apply to all code found in this distribution, be it the RC4, RSA, -

12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation -

13 * included with this distribution is covered by the same copyright terms -

14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). -

15 * -

16 * Copyright remains Eric Young's, and as such any Copyright notices in -

17 * the code are not to be removed. -

18 * If this package is used in a product, Eric Young should be given attribution -

19 * as the author of the parts of the library used. -

20 * This can be in the form of a textual message at program startup or -

21 * in documentation (online or textual) provided with the package. -

22 * -

23 * Redistribution and use in source and binary forms, with or without -

24 * modification, are permitted provided that the following conditions -

25 * are met: -

26 * 1. Redistributions of source code must retain the copyright -

27 * notice, this list of conditions and the following disclaimer. -

28 * 2. Redistributions in binary form must reproduce the above copyright -

29 * notice, this list of conditions and the following disclaimer in the -

30 * documentation and/or other materials provided with the distribution. -

31 * 3. All advertising materials mentioning features or use of this software -

32 * must display the following acknowledgement: -

33 * "This product includes cryptographic software written by -

34 * Eric Young (eay@cryptsoft.com)" -

35 * The word 'cryptographic' can be left out if the rouines from the library -

36 * being used are not cryptographic related :-). -

37 * 4. If you include any Windows specific code (or a derivative thereof) from -

38 * the apps directory (application code) you must include an acknowledgement: -

39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" -

40 * -

41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND -

42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -

43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -

44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE -

45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -

46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -

47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -

48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -

49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -

50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -

51 * SUCH DAMAGE. -

52 * -

53 * The licence and distribution terms for any publically available version or -

54 * derivative of this code cannot be changed. i.e. this code cannot simply be -

55 * copied and put under another distribution licence -

56 * [including the GNU Public Licence.] -

57 */ -

58 -

59 #include <stdio.h> -

60 -

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

62 * DES library. -

63 * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au -

64 * Eric Young (eay@cryptsoft.com) -

65 */ -

66 -

67 #define DES_FCRYPT -

68 #include "des_locl.h" -

69 #undef DES_FCRYPT -

70 -

71 #ifndef OPENBSD_DES_ASM -

72 -

73 #undef PERM_OP -

74 #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ -

75 (b)^=(t),\ -

76 (a)^=((t)<<(n))) -

77 -

78 #undef HPERM_OP -

79 #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ -

80 (a)=(a)^(t)^(t>>(16-(n))))\ -

81 -

82 void fcrypt_body(DES_LONG *out, DES_key_schedule *ks, DES_LONG Eswap0, -

83 DES_LONG Eswap1) -

84 { -

85 DES_LONG l,r,t,u; -

86 #ifdef DES_PTR -

87 const unsigned char *des_SP=(const unsigned char *)DES_SPtrans; -

88 #endif -

89 DES_LONG *s; -

90 int j; -

91 DES_LONG E0,E1; -

92 -

93 l=0; -

94 r=0; -

95 -

96 s=(DES_LONG *)ks; -

97 E0=Eswap0; -

98 E1=Eswap1; -

99 -

100

for (j=0; j<25; j++)

j<25	Description
TRUE	evaluated 50 times by 1 test Evaluated by: destest
FALSE	evaluated 2 times by 1 test Evaluated by: destest

2-50

101 { -

102 #ifndef DES_UNROLL -

103 int i; -

104 -

105 for (i=0; i<32; i+=4) -

106 { -

107 D_ENCRYPT(l,r,i+0); /* 1 */ -

108 D_ENCRYPT(r,l,i+2); /* 2 */ -

109 } -

110 #else -

111 D_ENCRYPT(l,r, 0); /* 1 */ -

112 D_ENCRYPT(r,l, 2); /* 2 */ -

113 D_ENCRYPT(l,r, 4); /* 3 */ -

114 D_ENCRYPT(r,l, 6); /* 4 */ -

115 D_ENCRYPT(l,r, 8); /* 5 */ -

116 D_ENCRYPT(r,l,10); /* 6 */ -

117 D_ENCRYPT(l,r,12); /* 7 */ -

118 D_ENCRYPT(r,l,14); /* 8 */ -

119 D_ENCRYPT(l,r,16); /* 9 */ -

120 D_ENCRYPT(r,l,18); /* 10 */ -

121 D_ENCRYPT(l,r,20); /* 11 */ -

122 D_ENCRYPT(r,l,22); /* 12 */ -

123 D_ENCRYPT(l,r,24); /* 13 */ -

124 D_ENCRYPT(r,l,26); /* 14 */ -

125 D_ENCRYPT(l,r,28); /* 15 */ -

126 D_ENCRYPT(r,l,30); /* 16 */ -

127 #endif -

128 -

129 t=l; -

130 l=r; -

131 r=t; -

132

}

executed 50 times by 1 test: end of block

Executed by:

destest

133 l=ROTATE(l,3)&0xffffffffL; -

134 r=ROTATE(r,3)&0xffffffffL; -

135 -

136 PERM_OP(l,r,t, 1,0x55555555L); -

137 PERM_OP(r,l,t, 8,0x00ff00ffL); -

138 PERM_OP(l,r,t, 2,0x33333333L); -

139 PERM_OP(r,l,t,16,0x0000ffffL); -

140 PERM_OP(l,r,t, 4,0x0f0f0f0fL); -

141 -

142 out[0]=r; -

143 out[1]=l; -

144

}

executed 2 times by 1 test: end of block

Executed by:

destest

145 -

146 #endif /* OPENBSD_DES_ASM */ -

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