OpenCoverage

cms_enc.c

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/cms/cms_enc.c

Source code

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Line Source Count

1 /* -

3 * -

4 * Licensed under the OpenSSL license (the "License"). You may not use -

5 * this file except in compliance with the License. You can obtain a copy -

6 * in the file LICENSE in the source distribution or at -

7 * https://www.openssl.org/source/license.html -

8 */ -

9 -

10 #include "internal/cryptlib.h" -

11 #include <openssl/asn1t.h> -

12 #include <openssl/pem.h> -

13 #include <openssl/x509v3.h> -

14 #include <openssl/err.h> -

15 #include <openssl/cms.h> -

16 #include <openssl/rand.h> -

17 #include "cms_lcl.h" -

18 -

19 /* CMS EncryptedData Utilities */ -

20 -

21 /* Return BIO based on EncryptedContentInfo and key */ -

22 -

23 BIO *cms_EncryptedContent_init_bio(CMS_EncryptedContentInfo *ec) -

24 { -

25 BIO *b; -

26 EVP_CIPHER_CTX *ctx; -

27 const EVP_CIPHER *ciph; -

28 X509_ALGOR *calg = ec->contentEncryptionAlgorithm; -

29 unsigned char iv[EVP_MAX_IV_LENGTH], *piv = NULL; -

30 unsigned char *tkey = NULL; -

31 size_t tkeylen = 0; -

32 -

33 int ok = 0; -

34 -

35 int enc, keep_key = 0; -

36 -

enc = ec->cipher ? 1 : 0;

ec->cipher	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

38 -

39 b = BIO_new(BIO_f_cipher()); -

if (b == NULL) {

b == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 48 times by 1 test Evaluated by: libcrypto.so.1.1

0-48

41 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, ERR_R_MALLOC_FAILURE); -

return NULL;

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

43 } -

44 -

45 BIO_get_cipher_ctx(b, &ctx); -

46 -

if (enc) {

enc	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

48 ciph = ec->cipher; -

49 /* -

50 * If not keeping key set cipher to NULL so subsequent calls decrypt. -

51 */ -

if (ec->key)

ec->key	Description
TRUE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1

4-20

ec->cipher = NULL;

executed 4 times by 1 test: ec->cipher = ((void *)0) ;

Executed by:

libcrypto.so.1.1

} else {

executed 24 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

55 ciph = EVP_get_cipherbyobj(calg->algorithm); -

56 -

if (!ciph) {

!ciph	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

0-24

58 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, CMS_R_UNKNOWN_CIPHER); -

goto err;

never executed: goto err;

60 } -

}

executed 24 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

62 -

if (EVP_CipherInit_ex(ctx, ciph, NULL, NULL, NULL, enc) <= 0) {

EVP_CipherInit...0) , enc) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 48 times by 1 test Evaluated by: libcrypto.so.1.1

0-48

64 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, -

65 CMS_R_CIPHER_INITIALISATION_ERROR); -

goto err;

never executed: goto err;

67 } -

68 -

if (enc) {

enc	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

70 int ivlen; -

71 calg->algorithm = OBJ_nid2obj(EVP_CIPHER_CTX_type(ctx)); -

72 /* Generate a random IV if we need one */ -

73 ivlen = EVP_CIPHER_CTX_iv_length(ctx); -

if (ivlen > 0) {

ivlen > 0	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	never evaluated

0-24

if (RAND_bytes(iv, ivlen) <= 0)

RAND_bytes(iv, ivlen) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

0-24

goto err;

never executed: goto err;

77 piv = iv; -

}

executed 24 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

} else if (EVP_CIPHER_asn1_to_param(ctx, calg->parameter) <= 0) {

executed 24 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

EVP_CIPHER_asn...arameter) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

0-24

80 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, -

81 CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR); -

goto err;

never executed: goto err;

83 } -

84 tkeylen = EVP_CIPHER_CTX_key_length(ctx); -

85 /* Generate random session key */ -

if (!enc || !ec->key) {

!enc	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

!ec->key	Description
TRUE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

4-24

87 tkey = OPENSSL_malloc(tkeylen); -

if (tkey == NULL) {

tkey == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 44 times by 1 test Evaluated by: libcrypto.so.1.1

0-44

89 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, ERR_R_MALLOC_FAILURE); -

goto err;

never executed: goto err;

91 } -

if (EVP_CIPHER_CTX_rand_key(ctx, tkey) <= 0)

EVP_CIPHER_CTX...tx, tkey) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 44 times by 1 test Evaluated by: libcrypto.so.1.1

0-44

goto err;

never executed: goto err;

}

executed 44 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

95 -

if (!ec->key) {

!ec->key	Description
TRUE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 28 times by 1 test Evaluated by: libcrypto.so.1.1

20-28

97 ec->key = tkey; -

98 ec->keylen = tkeylen; -

99 tkey = NULL; -

100

if (enc)

enc	Description
TRUE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	never evaluated

0-20

101

keep_key = 1;

executed 20 times by 1 test: keep_key = 1;

Executed by:

libcrypto.so.1.1

102 else -

103

ERR_clear_error();

never executed: ERR_clear_error();

104 -

105 } -

106 -

107

if (ec->keylen != tkeylen) {

ec->keylen != tkeylen	Description
TRUE	evaluated 2 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 46 times by 1 test Evaluated by: libcrypto.so.1.1

2-46

108 /* If necessary set key length */ -

109

if (EVP_CIPHER_CTX_set_key_length(ctx, ec->keylen) <= 0) {

EVP_CIPHER_CTX...->keylen) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 2 times by 1 test Evaluated by: libcrypto.so.1.1

0-2

110 /* -

111 * Only reveal failure if debugging so we don't leak information -

112 * which may be useful in MMA. -

113 */ -

114

if (enc || ec->debug) {

enc	Description
TRUE	never evaluated
FALSE	never evaluated

ec->debug	Description
TRUE	never evaluated
FALSE	never evaluated

115 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, -

116 CMS_R_INVALID_KEY_LENGTH); -

117

goto err;

never executed: goto err;

118 } else { -

119 /* Use random key */ -

120 OPENSSL_clear_free(ec->key, ec->keylen); -

121 ec->key = tkey; -

122 ec->keylen = tkeylen; -

123 tkey = NULL; -

124 ERR_clear_error(); -

125

}

never executed: end of block

126 } -

127

}

executed 2 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

128 -

129

if (EVP_CipherInit_ex(ctx, NULL, NULL, ec->key, piv, enc) <= 0) {

EVP_CipherInit...piv, enc) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 48 times by 1 test Evaluated by: libcrypto.so.1.1

0-48

130 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, -

131 CMS_R_CIPHER_INITIALISATION_ERROR); -

132

goto err;

never executed: goto err;

133 } -

134

if (enc) {

enc	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

135 calg->parameter = ASN1_TYPE_new(); -

136

if (calg->parameter == NULL) {

calg->parameter == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

0-24

137 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, ERR_R_MALLOC_FAILURE); -

138

goto err;

never executed: goto err;

139 } -

140

if (EVP_CIPHER_param_to_asn1(ctx, calg->parameter) <= 0) {

EVP_CIPHER_par...arameter) <= 0	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

0-24

141 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO, -

142 CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR); -

143

goto err;

never executed: goto err;

144 } -

145 /* If parameter type not set omit parameter */ -

146

if (calg->parameter->type == V_ASN1_UNDEF) {

calg->parameter->type == -1	Description
TRUE	never evaluated
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1

0-24

147 ASN1_TYPE_free(calg->parameter); -

148 calg->parameter = NULL; -

149

}

never executed: end of block

150

}

executed 24 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

151 ok = 1; -

152 -

153

err:

code before this statement executed 48 times by 1 test: err:

Executed by:

libcrypto.so.1.1

154

if (!keep_key || !ok) {

!keep_key	Description
TRUE	evaluated 28 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1

!ok	Description
TRUE	never evaluated
FALSE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1

0-28

155 OPENSSL_clear_free(ec->key, ec->keylen); -

156 ec->key = NULL; -

157

}

executed 28 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

158 OPENSSL_clear_free(tkey, tkeylen); -

159

if (ok)

ok	Description
TRUE	evaluated 48 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	never evaluated

0-48

160

return b;

executed 48 times by 1 test: return b;

Executed by:

libcrypto.so.1.1

161 BIO_free(b); -

162

return NULL;

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

163 } -

164 -

165 int cms_EncryptedContent_init(CMS_EncryptedContentInfo *ec, -

166 const EVP_CIPHER *cipher, -

167 const unsigned char *key, size_t keylen) -

168 { -

169 ec->cipher = cipher; -

170

if (key) {

key	Description
TRUE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 20 times by 1 test Evaluated by: libcrypto.so.1.1

8-20

171

if ((ec->key = OPENSSL_malloc(keylen)) == NULL) {

(ec->key = CRY...== ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.1.1

0-8

172 CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT, ERR_R_MALLOC_FAILURE); -

173

return 0;

never executed: return 0;

174 } -

175 memcpy(ec->key, key, keylen); -

176

}

executed 8 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

177 ec->keylen = keylen; -

178

if (cipher)

cipher	Description
TRUE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

4-24

179

ec->contentType = OBJ_nid2obj(NID_pkcs7_data);

executed 24 times by 1 test: ec->contentType = OBJ_nid2obj(21);

Executed by:

libcrypto.so.1.1

180

return 1;

executed 28 times by 1 test: return 1;

Executed by:

libcrypto.so.1.1

181 } -

182 -

183 int CMS_EncryptedData_set1_key(CMS_ContentInfo *cms, const EVP_CIPHER *ciph, -

184 const unsigned char *key, size_t keylen) -

185 { -

186 CMS_EncryptedContentInfo *ec; -

187

if (!key || !keylen) {

!key	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.1.1

!keylen	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.1.1

0-8

188 CMSerr(CMS_F_CMS_ENCRYPTEDDATA_SET1_KEY, CMS_R_NO_KEY); -

189

return 0;

never executed: return 0;

190 } -

191

if (ciph) {

ciph	Description
TRUE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

192 cms->d.encryptedData = M_ASN1_new_of(CMS_EncryptedData); -

193

if (!cms->d.encryptedData) {

!cms->d.encryptedData	Description
TRUE	never evaluated
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

0-4

194 CMSerr(CMS_F_CMS_ENCRYPTEDDATA_SET1_KEY, ERR_R_MALLOC_FAILURE); -

195

return 0;

never executed: return 0;

196 } -

197 cms->contentType = OBJ_nid2obj(NID_pkcs7_encrypted); -

198 cms->d.encryptedData->version = 0; -

199

} else if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_encrypted) {

executed 4 times by 1 test: end of block

Executed by:

libcrypto.so.1.1

OBJ_obj2nid(cm...entType) != 26	Description
TRUE	never evaluated
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

0-4

200 CMSerr(CMS_F_CMS_ENCRYPTEDDATA_SET1_KEY, CMS_R_NOT_ENCRYPTED_DATA); -

201

return 0;

never executed: return 0;

202 } -

203 ec = cms->d.encryptedData->encryptedContentInfo; -

204

return cms_EncryptedContent_init(ec, ciph, key, keylen);

executed 8 times by 1 test: return cms_EncryptedContent_init(ec, ciph, key, keylen);

Executed by:

libcrypto.so.1.1

205 } -

206 -

207 BIO *cms_EncryptedData_init_bio(CMS_ContentInfo *cms) -

208 { -

209 CMS_EncryptedData *enc = cms->d.encryptedData; -

210

if (enc->encryptedContentInfo->cipher && enc->unprotectedAttrs)

enc->encrypted...ntInfo->cipher	Description
TRUE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

enc->unprotectedAttrs	Description
TRUE	never evaluated
FALSE	evaluated 4 times by 1 test Evaluated by: libcrypto.so.1.1

0-4

211

enc->version = 2;

never executed: enc->version = 2;

212

return cms_EncryptedContent_init_bio(enc->encryptedContentInfo);

executed 8 times by 1 test: return cms_EncryptedContent_init_bio(enc->encryptedContentInfo);

Executed by:

libcrypto.so.1.1

213 } -

Source code

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