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xcbc_enc.c

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

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1 /* $OpenBSD: xcbc_enc.c,v 1.9 2015/02/07 13:19:15 doug 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 "des_locl.h" -

60 -

61 /* RSA's DESX */ -

62 -

63 void DES_xcbc_encrypt(const unsigned char *in, unsigned char *out, -

64 long length, DES_key_schedule *schedule, -

65 DES_cblock *ivec, const_DES_cblock *inw, -

66 const_DES_cblock *outw, int enc) -

67 { -

68 DES_LONG tin0,tin1; -

69 DES_LONG tout0,tout1,xor0,xor1; -

70 DES_LONG inW0,inW1,outW0,outW1; -

71 const unsigned char *in2; -

72 long l=length; -

73 DES_LONG tin[2]; -

74 unsigned char *iv; -

75 -

76 in2 = &(*inw)[0]; -

77 c2l(in2,inW0); -

78 c2l(in2,inW1); -

79 in2 = &(*outw)[0]; -

80 c2l(in2,outW0); -

81 c2l(in2,outW1); -

82 -

83 iv = &(*ivec)[0]; -

84 -

if (enc)

enc	Description
TRUE	evaluated 6 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1
FALSE	evaluated 4 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1

4-6

86 { -

87 c2l(iv,tout0); -

88 c2l(iv,tout1); -

for (l-=8; l>=0; l-=8)

l>=0	Description
TRUE	evaluated 231 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1
FALSE	evaluated 6 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1

6-231

90 { -

91 c2l(in,tin0); -

92 c2l(in,tin1); -

93 tin0^=tout0^inW0; tin[0]=tin0; -

94 tin1^=tout1^inW1; tin[1]=tin1; -

95 DES_encrypt1(tin,schedule,DES_ENCRYPT); -

96 tout0=tin[0]^outW0; l2c(tout0,out); -

97 tout1=tin[1]^outW1; l2c(tout1,out); -

}

executed 231 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

231

if (l != -8)

l != -8	Description
TRUE	evaluated 1 time by 1 test Evaluated by: destest
FALSE	evaluated 5 times by 2 tests Evaluated by: evptest libcrypto.so.44.0.1

1-5

100 { -

101

c2ln(in,tin0,tin1,l+8);

executed 1 time by 1 test: end of block

Executed by:

destest

code before this statement never executed: case 7:

code before this statement never executed: case 6:

code before this statement never executed: case 5:

code before this statement executed 1 time by 1 test: case 4:

Executed by:

destest

code before this statement executed 1 time by 1 test: case 3:

Executed by:

destest

code before this statement executed 1 time by 1 test: case 2:

Executed by:

destest

code before this statement executed 1 time by 1 test: case 1:

Executed by:

destest

never executed: case 8:

never executed: case 7:

never executed: case 6:

executed 1 time by 1 test: case 5:

Executed by:

destest

never executed: case 4:

never executed: case 3:

never executed: case 2:

executed 1 time by 1 test: case 1:

Executed by:

destest

0-1

102 tin0^=tout0^inW0; tin[0]=tin0; -

103 tin1^=tout1^inW1; tin[1]=tin1; -

104 DES_encrypt1(tin,schedule,DES_ENCRYPT); -

105 tout0=tin[0]^outW0; l2c(tout0,out); -

106 tout1=tin[1]^outW1; l2c(tout1,out); -

107

}

executed 1 time by 1 test: end of block

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destest

108 iv = &(*ivec)[0]; -

109 l2c(tout0,iv); -

110 l2c(tout1,iv); -

111

}

executed 6 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

112 else -

113 { -

114 c2l(iv,xor0); -

115 c2l(iv,xor1); -

116

for (l-=8; l>0; l-=8)

l>0	Description
TRUE	evaluated 228 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1
FALSE	evaluated 4 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1

4-228

117 { -

118 c2l(in,tin0); tin[0]=tin0^outW0; -

119 c2l(in,tin1); tin[1]=tin1^outW1; -

120 DES_encrypt1(tin,schedule,DES_DECRYPT); -

121 tout0=tin[0]^xor0^inW0; -

122 tout1=tin[1]^xor1^inW1; -

123 l2c(tout0,out); -

124 l2c(tout1,out); -

125 xor0=tin0; -

126 xor1=tin1; -

127

}

executed 228 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

228

128

if (l != -8)

l != -8	Description
TRUE	evaluated 4 times by 3 tests Evaluated by: destest evptest libcrypto.so.44.0.1
FALSE	never evaluated

0-4

129 { -

130 c2l(in,tin0); tin[0]=tin0^outW0; -

131 c2l(in,tin1); tin[1]=tin1^outW1; -

132 DES_encrypt1(tin,schedule,DES_DECRYPT); -

133 tout0=tin[0]^xor0^inW0; -

134 tout1=tin[1]^xor1^inW1; -

135

l2cn(tout0,tout1,out,l+8);

executed 4 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

code before this statement executed 3 times by 2 tests: case 7:

Executed by:

evptest
libcrypto.so.44.0.1

code before this statement executed 3 times by 2 tests: case 6:

Executed by:

evptest
libcrypto.so.44.0.1

code before this statement executed 3 times by 2 tests: case 5:

Executed by:

evptest
libcrypto.so.44.0.1

code before this statement executed 4 times by 3 tests: case 4:

Executed by:

destest
evptest
libcrypto.so.44.0.1

code before this statement executed 4 times by 3 tests: case 3:

Executed by:

destest
evptest
libcrypto.so.44.0.1

code before this statement executed 4 times by 3 tests: case 2:

Executed by:

destest
evptest
libcrypto.so.44.0.1

code before this statement executed 4 times by 3 tests: case 1:

Executed by:

destest
evptest
libcrypto.so.44.0.1

executed 3 times by 2 tests: case 8:

Executed by:

evptest
libcrypto.so.44.0.1

never executed: case 7:

never executed: case 6:

executed 1 time by 1 test: case 5:

Executed by:

destest

never executed: case 4:

never executed: case 3:

never executed: case 2:

executed 4 times by 3 tests: case 1:

Executed by:

destest
evptest
libcrypto.so.44.0.1

0-4

136 xor0=tin0; -

137 xor1=tin1; -

138

}

executed 4 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

139 -

140 iv = &(*ivec)[0]; -

141 l2c(xor0,iv); -

142 l2c(xor1,iv); -

143

}

executed 4 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

144 tin0=tin1=tout0=tout1=xor0=xor1=0; -

145 inW0=inW1=outW0=outW1=0; -

146 tin[0]=tin[1]=0; -

147

}

executed 10 times by 3 tests: end of block

Executed by:

destest
evptest
libcrypto.so.44.0.1

148 -

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