OpenCoverage

bn_rand.c

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/bn/bn_rand.c

Switch to Source code

Preprocessed file

Line Source Count

1 -

2 typedef enum bnrand_flag_e { -

3 NORMAL, TESTING, PRIVATE -

4 } BNRAND_FLAG; -

5 -

6 static int bnrand(BNRAND_FLAG flag, BIGNUM *rnd, int bits, int top, int bottom) -

7 { -

8 unsigned char *buf = -

9 ((void *)0) -

10 ; -

11 int b, ret = 0, bit, bytes, mask; -

12 -

if (bits == 0

bits == 0	Description
TRUE	evaluated 2 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 137416 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

) {

2-137416

if (top != -1

top != -1	Description
TRUE	evaluated 2 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	never evaluated

|| bottom != 0

bottom != 0	Description
TRUE	never evaluated
FALSE	never evaluated

)

0-2

goto

executed 2 times by 1 test: goto toosmall;

Executed by:

libcrypto.so.1.1

toosmall;

executed 2 times by 1 test: goto toosmall;

Executed by:

libcrypto.so.1.1

16 (BN_set_word((rnd),0)); -

return

never executed: return 1;

18 } -

if (bits < 0

bits < 0	Description
TRUE	never evaluated
FALSE	evaluated 137416 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

|| (bits == 1

bits == 1	Description
TRUE	evaluated 3 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 137413 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

&& top > 0

top > 0	Description
TRUE	evaluated 1 time by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 2 times by 1 test Evaluated by: libcrypto.so.1.1

))

0-137416

goto

executed 1 time by 1 test: goto toosmall;

Executed by:

libcrypto.so.1.1

toosmall;

executed 1 time by 1 test: goto toosmall;

Executed by:

libcrypto.so.1.1

21 -

22 bytes = (bits + 7) / 8; -

23 bit = (bits - 1) % 8; -

24 mask = 0xff << (bit + 1); -

25 -

26 buf = CRYPTO_malloc(bytes, __FILE__, 39); -

if (buf ==

buf == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 137415 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

0-137415

((void *)0)

buf == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 137415 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

0-137415

29 ) { -

30 ERR_put_error(3,(127),((1|64)),__FILE__,41); -

goto

never executed: goto err;

err;

never executed: goto err;

32 } -

33 -

34 -

b = flag == NORMAL

flag == NORMAL	Description
TRUE	evaluated 734 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 136681 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

? RAND_bytes(buf, bytes) : RAND_priv_bytes(buf, bytes);

734-136681

if (b <= 0

b <= 0	Description
TRUE	never evaluated
FALSE	evaluated 137415 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

0-137415

goto

never executed: goto err;

err;

never executed: goto err;

38 -

if (flag == TESTING

flag == TESTING	Description
TRUE	evaluated 1807 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 135608 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

) {

1807-135608

40 -

41 -

42 -

43 int i; -

44 unsigned char c; -

45 -

for (i = 0; i < bytes

i < bytes	Description
TRUE	evaluated 148234 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 1807 times by 1 test Evaluated by: libcrypto.so.1.1

; i++) {

1807-148234

if (RAND_bytes(&c, 1) <= 0

RAND_bytes(&c, 1) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 148234 times by 1 test Evaluated by: libcrypto.so.1.1

)

0-148234

goto

never executed: goto err;

err;

never executed: goto err;

if (c >= 128

c >= 128	Description
TRUE	evaluated 74246 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 73988 times by 1 test Evaluated by: libcrypto.so.1.1

&& i > 0

i > 0	Description
TRUE	evaluated 73382 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 864 times by 1 test Evaluated by: libcrypto.so.1.1

)

864-74246

buf[i] = buf[i - 1];

executed 73382 times by 1 test: buf[i] = buf[i - 1];

Executed by:

libcrypto.so.1.1

73382

else if (c < 42

c < 42	Description
TRUE	evaluated 24287 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 50565 times by 1 test Evaluated by: libcrypto.so.1.1

)

24287-50565

buf[i] = 0;

executed 24287 times by 1 test: buf[i] = 0;

Executed by:

libcrypto.so.1.1

24287

else if (c < 84

c < 84	Description
TRUE	evaluated 24281 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 26284 times by 1 test Evaluated by: libcrypto.so.1.1

)

24281-26284

buf[i] = 255;

executed 24281 times by 1 test: buf[i] = 255;

Executed by:

libcrypto.so.1.1

24281

}

executed 148234 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

148234

}

executed 1807 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

1807

57 -

if (top >= 0

top >= 0	Description
TRUE	evaluated 49342 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 88073 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

) {

49342-88073

if (top

top	Description
TRUE	evaluated 3385 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 45957 times by 1 test Evaluated by: libcrypto.so.1.1

) {

3385-45957

if (bit == 0

bit == 0	Description
TRUE	never evaluated
FALSE	evaluated 3385 times by 1 test Evaluated by: libcrypto.so.1.1

) {

0-3385

61 buf[0] = 1; -

62 buf[1] |= 0x80; -

}

never executed: end of block

else {

64 buf[0] |= (3 << (bit - 1)); -

}

executed 3385 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

3385

66 } else { -

67 buf[0] |= (1 << bit); -

}

executed 45957 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

45957

69 } -

70 buf[0] &= ~mask; -

if (bottom

bottom	Description
TRUE	evaluated 3598 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 133817 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

3598-133817

buf[bytes - 1] |= 1;

executed 3598 times by 1 test: buf[bytes - 1] |= 1;

Executed by:

libcrypto.so.1.1

3598

if (!BN_bin2bn(buf, bytes, rnd)

!BN_bin2bn(buf, bytes, rnd)	Description
TRUE	never evaluated
FALSE	evaluated 137415 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

0-137415

goto

never executed: goto err;

err;

never executed: goto err;

75 ret = 1; -

err:

code before this statement executed 137415 times by 2 tests: err:

Executed by:

libcrypto.so.1.1
sm2_internal_test

137415

77 CRYPTO_clear_free(buf, bytes, __FILE__, 88); -

78 ; -

return

executed 137415 times by 2 tests: return ret;

Executed by:

libcrypto.so.1.1
sm2_internal_test

ret;

executed 137415 times by 2 tests: return ret;

Executed by:

libcrypto.so.1.1
sm2_internal_test

137415

80 -

81 toosmall: -

82 ERR_put_error(3,(127),(118),__FILE__,93); -

return

executed 3 times by 1 test: return 0;

Executed by:

libcrypto.so.1.1

executed 3 times by 1 test: return 0;

Executed by:

libcrypto.so.1.1

84 } -

85 -

86 int BN_rand(BIGNUM *rnd, int bits, int top, int bottom) -

87 { -

return

executed 737 times by 1 test: return bnrand(NORMAL, rnd, bits, top, bottom);

Executed by:

libcrypto.so.1.1

bnrand(NORMAL, rnd, bits, top, bottom);

executed 737 times by 1 test: return bnrand(NORMAL, rnd, bits, top, bottom);

Executed by:

libcrypto.so.1.1

737

89 } -

90 -

91 int BN_bntest_rand(BIGNUM *rnd, int bits, int top, int bottom) -

92 { -

return

executed 1807 times by 1 test: return bnrand(TESTING, rnd, bits, top, bottom);

Executed by:

libcrypto.so.1.1

bnrand(TESTING, rnd, bits, top, bottom);

executed 1807 times by 1 test: return bnrand(TESTING, rnd, bits, top, bottom);

Executed by:

libcrypto.so.1.1

1807

94 } -

95 -

96 int BN_priv_rand(BIGNUM *rnd, int bits, int top, int bottom) -

97 { -

return

executed 124517 times by 1 test: return bnrand(PRIVATE, rnd, bits, top, bottom);

Executed by:

libcrypto.so.1.1

bnrand(PRIVATE, rnd, bits, top, bottom);

executed 124517 times by 1 test: return bnrand(PRIVATE, rnd, bits, top, bottom);

Executed by:

libcrypto.so.1.1

124517

99 } -

100 -

101 -

102 static int bnrand_range(BNRAND_FLAG flag, BIGNUM *r, const BIGNUM *range) -

103 { -

104 int n; -

105 int count = 100; -

106 -

107

if (range->neg

range->neg	Description
TRUE	never evaluated
FALSE	evaluated 9242 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

|| BN_is_zero(range)

BN_is_zero(range)	Description
TRUE	never evaluated
FALSE	evaluated 9242 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

) {

0-9242

108 ERR_put_error(3,(138),(115),__FILE__,119); -

109

return

never executed: return 0;

110 } -

111 -

112 n = BN_num_bits(range); -

113 -

114 -

115 -

116

if (n == 1

n == 1	Description
TRUE	never evaluated
FALSE	evaluated 9242 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

0-9242

117

(

never executed: (BN_set_word((r),0));

BN_set_word((r),0));

never executed: (BN_set_word((r),0));

118

else if (!BN_is_bit_set(range, n - 2)

!BN_is_bit_set(range, n - 2)	Description
TRUE	evaluated 591 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test
FALSE	evaluated 8651 times by 1 test Evaluated by: libcrypto.so.1.1

&& !BN_is_bit_set(range, n - 3)

!BN_is_bit_set(range, n - 3)	Description
TRUE	evaluated 248 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test
FALSE	evaluated 343 times by 1 test Evaluated by: libcrypto.so.1.1

) {

248-8651

119 -

120 -

121 -

122 -

123 do { -

124

if (!bnrand(flag, r, n + 1, -1, 0)

!bnrand(flag, r, n + 1, -1, 0)	Description
TRUE	never evaluated
FALSE	evaluated 320 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

0-320

125

return

never executed: return 0;

126 -

127 -

128 -

129 -

130 -

131 -

132 -

133

if (BN_cmp(r, range) >= 0

BN_cmp(r, range) >= 0	Description
TRUE	evaluated 237 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test
FALSE	evaluated 83 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

) {

83-237

134

if (!BN_sub(r, r, range)

!BN_sub(r, r, range)	Description
TRUE	never evaluated
FALSE	evaluated 237 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

0-237

135

return

never executed: return 0;

136

if (BN_cmp(r, range) >= 0

BN_cmp(r, range) >= 0	Description
TRUE	evaluated 140 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test
FALSE	evaluated 97 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

97-140

137

if (!BN_sub(r, r, range)

!BN_sub(r, r, range)	Description
TRUE	never evaluated
FALSE	evaluated 140 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

)

0-140

138

return

never executed: return 0;

139

}

executed 237 times by 2 tests: end of block

Executed by:

libcrypto.so.1.1
sm2_internal_test

237

140 -

141

if (!--count

!--count	Description
TRUE	never evaluated
FALSE	evaluated 320 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

) {

0-320

142 ERR_put_error(3,(138),(113),__FILE__,153); -

143

return

never executed: return 0;

144 } -

145 -

146

}

executed 320 times by 2 tests: end of block

Executed by:

libcrypto.so.1.1
sm2_internal_test

320

147

while (BN_cmp(r, range) >= 0

BN_cmp(r, range) >= 0	Description
TRUE	evaluated 72 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test
FALSE	evaluated 248 times by 2 tests Evaluated by: libcrypto.so.1.1 sm2_internal_test

);

72-248

148

}

executed 248 times by 2 tests: end of block

Executed by:

libcrypto.so.1.1
sm2_internal_test

else {

248

149 do { -

150 -

151

if (!bnrand(flag, r, n, -1, 0)

!bnrand(flag, r, n, -1, 0)	Description
TRUE	never evaluated
FALSE	evaluated 10037 times by 1 test Evaluated by: libcrypto.so.1.1

)

0-10037

152

return

never executed: return 0;

153 -

154

if (!--count

!--count	Description
TRUE	never evaluated
FALSE	evaluated 10037 times by 1 test Evaluated by: libcrypto.so.1.1

) {

0-10037

155 ERR_put_error(3,(138),(113),__FILE__,166); -

156

return

never executed: return 0;

157 } -

158

}

executed 10037 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

10037

159

while (BN_cmp(r, range) >= 0

BN_cmp(r, range) >= 0	Description
TRUE	evaluated 1043 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 8994 times by 1 test Evaluated by: libcrypto.so.1.1

);

1043-8994

160

}

executed 8994 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

8994

161 -

162 ; -

163

return

executed 9242 times by 2 tests: return 1;

Executed by:

libcrypto.so.1.1
sm2_internal_test

executed 9242 times by 2 tests: return 1;

Executed by:

libcrypto.so.1.1
sm2_internal_test

9242

164 } -

165 -

166 int BN_rand_range(BIGNUM *r, const BIGNUM *range) -

167 { -

168

return

never executed: return bnrand_range(NORMAL, r, range);

bnrand_range(NORMAL, r, range);

never executed: return bnrand_range(NORMAL, r, range);

169 } -

170 -

171 int BN_priv_rand_range(BIGNUM *r, const BIGNUM *range) -

172 { -

173

return

executed 9242 times by 2 tests: return bnrand_range(PRIVATE, r, range);

Executed by:

libcrypto.so.1.1
sm2_internal_test

bnrand_range(PRIVATE, r, range);

executed 9242 times by 2 tests: return bnrand_range(PRIVATE, r, range);

Executed by:

libcrypto.so.1.1
sm2_internal_test

9242

174 } -

175 -

176 int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom) -

177 { -

178

return

never executed: return BN_rand(rnd, bits, top, bottom);

BN_rand(rnd, bits, top, bottom);

never executed: return BN_rand(rnd, bits, top, bottom);

179 } -

180 -

181 int BN_pseudo_rand_range(BIGNUM *r, const BIGNUM *range) -

182 { -

183

return

never executed: return BN_rand_range(r, range);

BN_rand_range(r, range);

never executed: return BN_rand_range(r, range);

184 } -

185 int BN_generate_dsa_nonce(BIGNUM *out, const BIGNUM *range, -

186 const BIGNUM *priv, const unsigned char *message, -

187 size_t message_len, BN_CTX *ctx) -

188 { -

189 SHA512_CTX sha; -

190 -

191 -

192 -

193 -

194 unsigned char random_bytes[64]; -

195 unsigned char digest[64]; -

196 unsigned done, todo; -

197 -

198 const unsigned num_k_bytes = ((BN_num_bits(range)+7)/8) + 8; -

199 unsigned char private_bytes[96]; -

200 unsigned char *k_bytes; -

201 int ret = 0; -

202 -

203 k_bytes = CRYPTO_malloc(num_k_bytes, __FILE__, 223); -

204

if (k_bytes ==

k_bytes == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

0-427

205

((void *)0)

k_bytes == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

0-427

206 ) -

207

goto

never executed: goto err;

err;

never executed: goto err;

208 -

209 -

210 todo = sizeof(priv->d[0]) * priv->top; -

211

if (todo > sizeof(private_bytes)

todo > sizeof(private_bytes)	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

) {

0-427

212 -

213 -

214 -

215 -

216 -

217 ERR_put_error(3,(140),(117),__FILE__,235); -

218

goto

never executed: goto err;

err;

never executed: goto err;

219 } -

220 memcpy(private_bytes, priv->d, todo); -

221 memset(private_bytes + todo, 0, sizeof(private_bytes) - todo); -

222 -

223

for (done = 0; done < num_k_bytes

done < num_k_bytes	Description
TRUE	evaluated 432 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

;) {

427-432

224

if (RAND_priv_bytes(random_bytes, sizeof(random_bytes)) != 1

RAND_priv_byte...m_bytes)) != 1	Description
TRUE	never evaluated
FALSE	evaluated 432 times by 1 test Evaluated by: libcrypto.so.1.1

)

0-432

225

goto

never executed: goto err;

err;

never executed: goto err;

226 SHA512_Init(&sha); -

227 SHA512_Update(&sha, &done, sizeof(done)); -

228 SHA512_Update(&sha, private_bytes, sizeof(private_bytes)); -

229 SHA512_Update(&sha, message, message_len); -

230 SHA512_Update(&sha, random_bytes, sizeof(random_bytes)); -

231 SHA512_Final(digest, &sha); -

232 -

233 todo = num_k_bytes - done; -

234

if (todo > 64

todo > 64	Description
TRUE	evaluated 5 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

)

5-427

235

todo = 64;

executed 5 times by 1 test: todo = 64;

Executed by:

libcrypto.so.1.1

236 memcpy(k_bytes + done, digest, todo); -

237 done += todo; -

238

}

executed 432 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

432

239 -

240

if (!BN_bin2bn(k_bytes, num_k_bytes, out)

!BN_bin2bn(k_b..._k_bytes, out)	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

)

0-427

241

goto

never executed: goto err;

err;

never executed: goto err;

242

if (BN_div(

BN_div( ((void...e),(ctx)) != 1	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

0-427

243

((void *)0)

BN_div( ((void...e),(ctx)) != 1	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

0-427

244

,(out),(out),(range),(ctx)) != 1

BN_div( ((void...e),(ctx)) != 1	Description
TRUE	never evaluated
FALSE	evaluated 427 times by 1 test Evaluated by: libcrypto.so.1.1

)

0-427

245

goto

never executed: goto err;

err;

never executed: goto err;

246 ret = 1; -

247 -

248

err:

code before this statement executed 427 times by 1 test: err:

Executed by:

libcrypto.so.1.1

427

249 CRYPTO_free(k_bytes, __FILE__, 265); -

250 OPENSSL_cleanse(private_bytes, sizeof(private_bytes)); -

251

return

executed 427 times by 1 test: return ret;

Executed by:

libcrypto.so.1.1

ret;

executed 427 times by 1 test: return ret;

Executed by:

libcrypto.so.1.1

427

252 } -

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