6 #include <openssl/ssl.h>
7 #include <openssl/bio.h>
8 #include <openssl/x509v3.h>
10 X509Req::X509Req( X509_REQ* csr ) {
11 req = std::shared_ptr<X509_REQ>( csr, X509_REQ_free );
12 EVP_PKEY* pkt = X509_REQ_get_pubkey( req.get() );
15 throw "Error extracting public key";
18 pk = std::shared_ptr<EVP_PKEY>( pkt, EVP_PKEY_free );
21 X509Req::X509Req( std::string spkac ) {
22 if( spkac.compare( 0, 6, "SPKAC=" ) != 0 ) {
23 throw "Error: not a SPKAC";
26 spkac = spkac.substr( 6 );
27 NETSCAPE_SPKI* spki_p = NETSCAPE_SPKI_b64_decode( spkac.c_str(), spkac.size() );
30 throw "Error: decode failed";
33 spki = std::shared_ptr<NETSCAPE_SPKI>( spki_p, NETSCAPE_SPKI_free );
34 EVP_PKEY* pkt_p = NETSCAPE_SPKI_get_pubkey( spki.get() );
37 throw "Error: reading SPKAC Pubkey failed";
40 pk = std::shared_ptr<EVP_PKEY>( pkt_p, EVP_PKEY_free );
43 int X509Req::verify() {
45 return NETSCAPE_SPKI_verify( spki.get(), pk.get() );
48 return X509_REQ_verify( req.get(), pk.get() );
51 std::shared_ptr<EVP_PKEY> X509Req::getPkey() {
55 std::shared_ptr<X509Req> X509Req::parseCSR( std::string content ) {
56 std::shared_ptr<BIO> in = std::shared_ptr<BIO>( BIO_new_mem_buf( const_cast<char*>( content.c_str() ), -1 ), BIO_free );
57 X509_REQ* req = PEM_read_bio_X509_REQ( in.get(), NULL, NULL, NULL );
60 throw "Error parsing CSR";
63 return std::shared_ptr<X509Req>( new X509Req( req ) );
66 std::shared_ptr<X509Req> X509Req::parseSPKAC( std::string content ) {
67 return std::shared_ptr<X509Req>( new X509Req( content ) );
70 int add_ext( std::shared_ptr<X509> issuer, std::shared_ptr<X509> subj, int nid, const char* value ) {
74 /* This sets the 'context' of the extensions. */
75 /* No configuration database */
76 X509V3_set_ctx_nodb( &ctx );
78 /* Issuer and subject certs: both the target since it is self signed,
79 * no request and no CRL
81 X509V3_set_ctx( &ctx, issuer.get(), subj.get(), NULL, NULL, 0 );
82 ex = X509V3_EXT_conf_nid( NULL, &ctx, nid, const_cast<char*>( value ) );
88 X509_add_ext( subj.get(), ex, -1 );
89 X509_EXTENSION_free( ex );
94 X509Cert::X509Cert() {
98 throw "malloc failed";
101 target = std::shared_ptr<X509>( c, X509_free );
103 if( !X509_set_version( c, 2 ) ) {
104 throw "Setting X509-version to 3 failed";
107 X509_NAME* subjectP = X509_NAME_new();
110 throw "malloc failure";
113 subject = std::shared_ptr<X509_NAME>( subjectP, X509_NAME_free );
116 void X509Cert::addRDN( int nid, std::string data ) {
117 if( ! X509_NAME_add_entry_by_NID( subject.get(), nid, MBSTRING_UTF8, ( unsigned char* )const_cast<char*>( data.data() ), data.size(), -1, 0 ) ) {
118 throw "malloc failure";
122 void X509Cert::setIssuerNameFrom( std::shared_ptr<X509> caCert ) {
123 if( !X509_set_issuer_name( target.get(), X509_get_subject_name( caCert.get() ) ) ) {
124 throw "Error setting Issuer name";
128 void X509Cert::setPubkeyFrom( std::shared_ptr<X509Req> req ) {
129 std::shared_ptr<EVP_PKEY> pktmp = req->getPkey();
131 if( !X509_set_pubkey( target.get(), pktmp.get() ) ) {
132 throw "Setting public key failed.";
136 void X509Cert::setSerialNumber( BIGNUM* num ) {
137 BN_to_ASN1_INTEGER( num , target->cert_info->serialNumber );
140 void X509Cert::setTimes( uint32_t before, uint32_t after ) {
141 X509_gmtime_adj( X509_get_notBefore( target.get() ), before );
142 X509_gmtime_adj( X509_get_notAfter( target.get() ), after );
145 static X509_EXTENSION* do_ext_i2d( int ext_nid, int crit, ASN1_VALUE* ext_struc ) {
146 unsigned char* ext_der;
148 ASN1_OCTET_STRING* ext_oct;
150 /* Convert internal representation to DER */
152 ext_len = ASN1_item_i2d( ext_struc, &ext_der, ASN1_ITEM_ptr( ASN1_ITEM_ref( GENERAL_NAMES ) ) );
158 if( !( ext_oct = M_ASN1_OCTET_STRING_new() ) ) {
162 ext_oct->data = ext_der;
163 ext_oct->length = ext_len;
165 ext = X509_EXTENSION_create_by_NID( NULL, ext_nid, crit, ext_oct );
171 M_ASN1_OCTET_STRING_free( ext_oct );
178 void X509Cert::setExtensions( std::shared_ptr<X509> caCert, std::vector<std::shared_ptr<SAN>>& sans ) {
179 add_ext( caCert, target, NID_basic_constraints, "critical,CA:FALSE" );
180 add_ext( caCert, target, NID_subject_key_identifier, "hash" );
181 add_ext( caCert, target, NID_authority_key_identifier, "keyid,issuer:always" );
182 add_ext( caCert, target, NID_key_usage, "critical,nonRepudiation,digitalSignature,keyEncipherment" );
183 add_ext( caCert, target, NID_ext_key_usage, "clientAuth, serverAuth" );
184 add_ext( caCert, target, NID_info_access, "OCSP;URI:http://ocsp.cacert.org" );
185 add_ext( caCert, target, NID_crl_distribution_points, "URI:http://crl.cacert.org/class3-revoke.crl" );
187 if( sans.size() == 0 ) {
191 std::shared_ptr<GENERAL_NAMES> gens = std::shared_ptr<GENERAL_NAMES>(
192 sk_GENERAL_NAME_new_null(),
193 []( GENERAL_NAMES * ref ) {
195 sk_GENERAL_NAME_pop_free( ref, GENERAL_NAME_free );
199 for( auto& name : sans ) {
200 GENERAL_NAME* gen = GENERAL_NAME_new();
203 throw "Malloc failure.";
206 gen->type = name->type == "DNS" ? GEN_DNS : name->type == "email" ? GEN_EMAIL : 0; // GEN_EMAIL;
209 || !( gen->d.ia5 = M_ASN1_IA5STRING_new() )
210 || !ASN1_STRING_set( gen->d.ia5, name->content.data(), name->content.size() ) ) {
211 GENERAL_NAME_free( gen );
212 throw "initing iasting5 failed";
215 sk_GENERAL_NAME_push( gens.get(), gen );
218 X509_EXTENSION* ext = do_ext_i2d( NID_subject_alt_name, 0/*critical*/, ( ASN1_VALUE* )gens.get() );
220 X509_add_ext( target.get(), ext, -1 );
221 X509_EXTENSION_free( ext );
224 std::shared_ptr<SignedCertificate> X509Cert::sign( std::shared_ptr<EVP_PKEY> caKey, std::string signAlg ) {
225 if( !X509_set_subject_name( target.get(), subject.get() ) ) {
226 throw "error setting subject";
231 if( signAlg == "sha512" ) {
233 } else if( signAlg == "sha384" ) {
235 } else if( signAlg == "sha256" ) {
237 } else if( signAlg == "sha1" ) {
240 throw "Unknown md-type";
243 if( !X509_sign( target.get(), caKey.get(), md ) ) {
244 throw "Signing failed.";
247 //X509_print_fp( stdout, target.get() );
249 std::shared_ptr<BIO> mem = std::shared_ptr<BIO>( BIO_new( BIO_s_mem() ), BIO_free );
250 PEM_write_bio_X509( mem.get(), target.get() );
252 BIO_get_mem_ptr( mem.get(), &buf );
253 std::shared_ptr<SignedCertificate> res = std::shared_ptr<SignedCertificate>( new SignedCertificate() );
254 res->certificate = std::string( buf->data, buf->data + buf->length );
255 BIGNUM* ser = ASN1_INTEGER_to_BN( target->cert_info->serialNumber, NULL );
256 char* serStr = BN_bn2hex( ser );
257 res->serial = std::string( serStr );
258 OPENSSL_free( serStr );