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rsa_crpt.c

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1 /* $OpenBSD: rsa_crpt.c,v 1.19 2018/02/18 12:52:13 tb 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 #include <openssl/opensslconf.h> -

62 -

63 #include <openssl/bn.h> -

64 #include <openssl/crypto.h> -

65 #include <openssl/err.h> -

66 #include <openssl/lhash.h> -

67 #include <openssl/rsa.h> -

68 -

69 #include "bn_lcl.h" -

70 -

71 #ifndef OPENSSL_NO_ENGINE -

72 #include <openssl/engine.h> -

73 #endif -

74 -

75 int -

76 RSA_bits(const RSA *r) -

77 { -

return BN_num_bits(r->n);

never executed: return BN_num_bits(r->n);

79 } -

80 -

81 int -

82 RSA_size(const RSA *r) -

83 { -

return BN_num_bytes(r->n);

executed 443 times by 5 tests: return ((BN_num_bits(r->n)+7)/8);

Executed by:

libcrypto.so.44.0.1
pkcs7test
servertest
ssltest
tlstest

443

85 } -

86 -

87 int -

88 RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to, -

89 RSA *rsa, int padding) -

90 { -

return rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding);

executed 21 times by 3 tests: return rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding);

Executed by:

pkcs7test
rsa_test
ssltest

92 } -

93 -

94 int -

95 RSA_private_encrypt(int flen, const unsigned char *from, unsigned char *to, -

96 RSA *rsa, int padding) -

97 { -

return rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding);

executed 51 times by 5 tests: return rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding);

Executed by:

libcrypto.so.44.0.1
pkcs7test
servertest
ssltest
tlstest

99 } -

100 -

101 int -

102 RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to, -

103 RSA *rsa, int padding) -

104 { -

105

return rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding);

executed 511 times by 3 tests: return rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding);

Executed by:

pkcs7test
rsa_test
ssltest

511

106 } -

107 -

108 int -

109 RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to, -

110 RSA *rsa, int padding) -

111 { -

112

return rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding);

executed 120 times by 3 tests: return rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding);

Executed by:

pkcs7test
ssltest
tlstest

120

113 } -

114 -

115 int -

116 RSA_flags(const RSA *r) -

117 { -

118

return r == NULL ? 0 : r->meth->flags;

executed 63 times by 3 tests: return r == ((void *)0) ? 0 : r->meth->flags;

Executed by:

servertest
ssltest
tlstest

r == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 63 times by 3 tests Evaluated by: servertest ssltest tlstest

0-63

119 } -

120 -

121 void -

122 RSA_blinding_off(RSA *rsa) -

123 { -

124 BN_BLINDING_free(rsa->blinding); -

125 rsa->blinding = NULL; -

126 rsa->flags |= RSA_FLAG_NO_BLINDING; -

127

}

never executed: end of block

128 -

129 int -

130 RSA_blinding_on(RSA *rsa, BN_CTX *ctx) -

131 { -

132 int ret = 0; -

133 -

134

if (rsa->blinding != NULL)

rsa->blinding != ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

135

RSA_blinding_off(rsa);

never executed: RSA_blinding_off(rsa);

136 -

137 rsa->blinding = RSA_setup_blinding(rsa, ctx); -

138

if (rsa->blinding == NULL)

rsa->blinding == ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

139

goto err;

never executed: goto err;

140 -

141 rsa->flags &= ~RSA_FLAG_NO_BLINDING; -

142 ret = 1; -

143

err:

code before this statement never executed: err:

144

return (ret);

never executed: return (ret);

145 } -

146 -

147 static BIGNUM * -

148 rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p, const BIGNUM *q, -

149 BN_CTX *ctx) -

150 { -

151 BIGNUM *ret = NULL, *r0, *r1, *r2; -

152 -

153

if (d == NULL || p == NULL || q == NULL)

d == ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

p == ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

q == ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

154

return NULL;

never executed: return ((void *)0) ;

155 -

156 BN_CTX_start(ctx); -

157

if ((r0 = BN_CTX_get(ctx)) == NULL)

(r0 = BN_CTX_g...== ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

158

goto err;

never executed: goto err;

159

if ((r1 = BN_CTX_get(ctx)) == NULL)

(r1 = BN_CTX_g...== ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

160

goto err;

never executed: goto err;

161

if ((r2 = BN_CTX_get(ctx)) == NULL)

(r2 = BN_CTX_g...== ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

162

goto err;

never executed: goto err;

163 -

164

if (!BN_sub(r1, p, BN_value_one()))

!BN_sub(r1, p, BN_value_one())	Description
TRUE	never evaluated
FALSE	never evaluated

165

goto err;

never executed: goto err;

166

if (!BN_sub(r2, q, BN_value_one()))

!BN_sub(r2, q, BN_value_one())	Description
TRUE	never evaluated
FALSE	never evaluated

167

goto err;

never executed: goto err;

168

if (!BN_mul(r0, r1, r2, ctx))

!BN_mul(r0, r1, r2, ctx)	Description
TRUE	never evaluated
FALSE	never evaluated

169

goto err;

never executed: goto err;

170 -

171 ret = BN_mod_inverse_ct(NULL, d, r0, ctx); -

172

err:

code before this statement never executed: err:

173 BN_CTX_end(ctx); -

174

return ret;

never executed: return ret;

175 } -

176 -

177 BN_BLINDING * -

178 RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx) -

179 { -

180 BIGNUM *e; -

181 BIGNUM n; -

182 BN_CTX *ctx; -

183 BN_BLINDING *ret = NULL; -

184 -

185

if (in_ctx == NULL) {

in_ctx == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 67 times by 6 tests Evaluated by: libcrypto.so.44.0.1 pkcs7test rsa_test servertest ssltest tlstest

0-67

186

if ((ctx = BN_CTX_new()) == NULL)

(ctx = BN_CTX_...== ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

187

return 0;

never executed: return 0;

188

} else

never executed: end of block

189

ctx = in_ctx;

executed 67 times by 6 tests: ctx = in_ctx;

Executed by:

libcrypto.so.44.0.1
pkcs7test
rsa_test
servertest
ssltest
tlstest

190 -

191 BN_CTX_start(ctx); -

192 -

193

if (rsa->e == NULL) {

rsa->e == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 67 times by 6 tests Evaluated by: libcrypto.so.44.0.1 pkcs7test rsa_test servertest ssltest tlstest

0-67

194 e = rsa_get_public_exp(rsa->d, rsa->p, rsa->q, ctx); -

195

if (e == NULL) {

e == ((void *)0)	Description
TRUE	never evaluated
FALSE	never evaluated

196 RSAerror(RSA_R_NO_PUBLIC_EXPONENT); -

197

goto err;

never executed: goto err;

198 } -

199

} else

never executed: end of block

200

e = rsa->e;

executed 67 times by 6 tests: e = rsa->e;

Executed by:

libcrypto.so.44.0.1
pkcs7test
rsa_test
servertest
ssltest
tlstest

201 -

202 BN_init(&n); -

203 BN_with_flags(&n, rsa->n, BN_FLG_CONSTTIME); -

204 -

205 ret = BN_BLINDING_create_param(NULL, e, &n, ctx, rsa->meth->bn_mod_exp, -

206 rsa->_method_mod_n); -

207 -

208

if (ret == NULL) {

ret == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 67 times by 6 tests Evaluated by: libcrypto.so.44.0.1 pkcs7test rsa_test servertest ssltest tlstest

0-67

209 RSAerror(ERR_R_BN_LIB); -

210

goto err;

never executed: goto err;

211 } -

212 CRYPTO_THREADID_current(BN_BLINDING_thread_id(ret)); -

213

err:

code before this statement executed 67 times by 6 tests: err:

Executed by:

libcrypto.so.44.0.1
pkcs7test
rsa_test
servertest
ssltest
tlstest

214 BN_CTX_end(ctx); -

215

if (in_ctx == NULL)

in_ctx == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 67 times by 6 tests Evaluated by: libcrypto.so.44.0.1 pkcs7test rsa_test servertest ssltest tlstest

0-67

216

BN_CTX_free(ctx);

never executed: BN_CTX_free(ctx);

217

if (rsa->e == NULL)

rsa->e == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 67 times by 6 tests Evaluated by: libcrypto.so.44.0.1 pkcs7test rsa_test servertest ssltest tlstest

0-67

218

BN_free(e);

never executed: BN_free(e);

219 -

220

return ret;

executed 67 times by 6 tests: return ret;

Executed by:

libcrypto.so.44.0.1
pkcs7test
rsa_test
servertest
ssltest
tlstest

221 } -

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