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rc2_cbc.c

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/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/rc2/rc2_cbc.c

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1 /* $OpenBSD: rc2_cbc.c,v 1.5 2014/10/28 07:35:59 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 <openssl/rc2.h> -

60 #include "rc2_locl.h" -

61 -

62 void RC2_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, -

63 RC2_KEY *ks, unsigned char *iv, int encrypt) -

64 { -

65 unsigned long tin0,tin1; -

66 unsigned long tout0,tout1,xor0,xor1; -

67 long l=length; -

68 unsigned long tin[2]; -

69 -

if (encrypt)

encrypt	Description
TRUE	evaluated 12 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	evaluated 6 times by 1 test Evaluated by: libcrypto.so.44.0.1

6-12

71 { -

72 c2l(iv,tout0); -

73 c2l(iv,tout1); -

74 iv-=8; -

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

l>=0	Description
TRUE	evaluated 672 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	evaluated 12 times by 1 test Evaluated by: libcrypto.so.44.0.1

12-672

76 { -

77 c2l(in,tin0); -

78 c2l(in,tin1); -

79 tin0^=tout0; -

80 tin1^=tout1; -

81 tin[0]=tin0; -

82 tin[1]=tin1; -

83 RC2_encrypt(tin,ks); -

84 tout0=tin[0]; l2c(tout0,out); -

85 tout1=tin[1]; l2c(tout1,out); -

}

executed 672 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

672

if (l != -8)

l != -8	Description
TRUE	never evaluated
FALSE	evaluated 12 times by 1 test Evaluated by: libcrypto.so.44.0.1

0-12

88 { -

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

never executed: end of block

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 never executed: case 4:

code before this statement never executed: case 3:

code before this statement never executed: case 2:

code before this statement never executed: case 1:

never executed: case 8:

never executed: case 7:

never executed: case 6:

never executed: case 5:

never executed: case 4:

never executed: case 3:

never executed: case 2:

never executed: case 1:

90 tin0^=tout0; -

91 tin1^=tout1; -

92 tin[0]=tin0; -

93 tin[1]=tin1; -

94 RC2_encrypt(tin,ks); -

95 tout0=tin[0]; l2c(tout0,out); -

96 tout1=tin[1]; l2c(tout1,out); -

}

never executed: end of block

98 l2c(tout0,iv); -

99 l2c(tout1,iv); -

100

}

executed 12 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

101 else -

102 { -

103 c2l(iv,xor0); -

104 c2l(iv,xor1); -

105 iv-=8; -

106

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

l>=0	Description
TRUE	evaluated 672 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	evaluated 6 times by 1 test Evaluated by: libcrypto.so.44.0.1

6-672

107 { -

108 c2l(in,tin0); tin[0]=tin0; -

109 c2l(in,tin1); tin[1]=tin1; -

110 RC2_decrypt(tin,ks); -

111 tout0=tin[0]^xor0; -

112 tout1=tin[1]^xor1; -

113 l2c(tout0,out); -

114 l2c(tout1,out); -

115 xor0=tin0; -

116 xor1=tin1; -

117

}

executed 672 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

672

118

if (l != -8)

l != -8	Description
TRUE	never evaluated
FALSE	evaluated 6 times by 1 test Evaluated by: libcrypto.so.44.0.1

0-6

119 { -

120 c2l(in,tin0); tin[0]=tin0; -

121 c2l(in,tin1); tin[1]=tin1; -

122 RC2_decrypt(tin,ks); -

123 tout0=tin[0]^xor0; -

124 tout1=tin[1]^xor1; -

125

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

never executed: end of block

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 never executed: case 4:

code before this statement never executed: case 3:

code before this statement never executed: case 2:

code before this statement never executed: case 1:

never executed: case 8:

never executed: case 7:

never executed: case 6:

never executed: case 5:

never executed: case 4:

never executed: case 3:

never executed: case 2:

never executed: case 1:

126 xor0=tin0; -

127 xor1=tin1; -

128

}

never executed: end of block

129 l2c(xor0,iv); -

130 l2c(xor1,iv); -

131

}

executed 6 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

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

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

134

}

executed 18 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

135 -

136 void RC2_encrypt(unsigned long *d, RC2_KEY *key) -

137 { -

138 int i,n; -

139 RC2_INT *p0,*p1; -

140 RC2_INT x0,x1,x2,x3,t; -

141 unsigned long l; -

142 -

143 l=d[0]; -

144 x0=(RC2_INT)l&0xffff; -

145 x1=(RC2_INT)(l>>16L); -

146 l=d[1]; -

147 x2=(RC2_INT)l&0xffff; -

148 x3=(RC2_INT)(l>>16L); -

149 -

150 n=3; -

151 i=5; -

152 -

153 p0=p1= &(key->data[0]); -

154 for (;;) -

155 { -

156 t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff; -

157 x0=(t<<1)|(t>>15); -

158 t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff; -

159 x1=(t<<2)|(t>>14); -

160 t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff; -

161 x2=(t<<3)|(t>>13); -

162 t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff; -

163 x3=(t<<5)|(t>>11); -

164 -

165

if (--i == 0)

--i == 0	Description
TRUE	evaluated 5364 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 23244 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

5364-23244

166 { -

167

if (--n == 0) break;

executed 1788 times by 2 tests: break;

Executed by:

libcrypto.so.44.0.1
rc2test

--n == 0	Description
TRUE	evaluated 1788 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 3576 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

1788-3576

168

i=(n == 2)?6:5;

(n == 2)	Description
TRUE	evaluated 1788 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 1788 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

1788

169 -

170 x0+=p1[x3&0x3f]; -

171 x1+=p1[x0&0x3f]; -

172 x2+=p1[x1&0x3f]; -

173 x3+=p1[x2&0x3f]; -

174

}

executed 3576 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

3576

175

}

executed 26820 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

26820

176 -

177 d[0]=(unsigned long)(x0&0xffff)|((unsigned long)(x1&0xffff)<<16L); -

178 d[1]=(unsigned long)(x2&0xffff)|((unsigned long)(x3&0xffff)<<16L); -

179

}

executed 1788 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

1788

180 -

181 void RC2_decrypt(unsigned long *d, RC2_KEY *key) -

182 { -

183 int i,n; -

184 RC2_INT *p0,*p1; -

185 RC2_INT x0,x1,x2,x3,t; -

186 unsigned long l; -

187 -

188 l=d[0]; -

189 x0=(RC2_INT)l&0xffff; -

190 x1=(RC2_INT)(l>>16L); -

191 l=d[1]; -

192 x2=(RC2_INT)l&0xffff; -

193 x3=(RC2_INT)(l>>16L); -

194 -

195 n=3; -

196 i=5; -

197 -

198 p0= &(key->data[63]); -

199 p1= &(key->data[0]); -

200 for (;;) -

201 { -

202 t=((x3<<11)|(x3>>5))&0xffff; -

203 x3=(t-(x0& ~x2)-(x1&x2)- *(p0--))&0xffff; -

204 t=((x2<<13)|(x2>>3))&0xffff; -

205 x2=(t-(x3& ~x1)-(x0&x1)- *(p0--))&0xffff; -

206 t=((x1<<14)|(x1>>2))&0xffff; -

207 x1=(t-(x2& ~x0)-(x3&x0)- *(p0--))&0xffff; -

208 t=((x0<<15)|(x0>>1))&0xffff; -

209 x0=(t-(x1& ~x3)-(x2&x3)- *(p0--))&0xffff; -

210 -

211

if (--i == 0)

--i == 0	Description
TRUE	evaluated 2700 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 11700 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

2700-11700

212 { -

213

if (--n == 0) break;

executed 900 times by 2 tests: break;

Executed by:

libcrypto.so.44.0.1
rc2test

--n == 0	Description
TRUE	evaluated 900 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 1800 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

900-1800

214

i=(n == 2)?6:5;

(n == 2)	Description
TRUE	evaluated 900 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 900 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

900

215 -

216 x3=(x3-p1[x2&0x3f])&0xffff; -

217 x2=(x2-p1[x1&0x3f])&0xffff; -

218 x1=(x1-p1[x0&0x3f])&0xffff; -

219 x0=(x0-p1[x3&0x3f])&0xffff; -

220

}

executed 1800 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

1800

221

}

executed 13500 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

13500

222 -

223 d[0]=(unsigned long)(x0&0xffff)|((unsigned long)(x1&0xffff)<<16L); -

224 d[1]=(unsigned long)(x2&0xffff)|((unsigned long)(x3&0xffff)<<16L); -

225

}

executed 900 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

900

226 -

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