Botan 2.13.0 Crypto and TLS for C++11

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x509self.cpp
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1 /*
2 * PKCS #10/Self Signed Cert Creation
3 * (C) 1999-2008,2018 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7
8 #include <botan/x509self.h>
9 #include <botan/x509_ext.h>
10 #include <botan/x509_ca.h>
11 #include <botan/der_enc.h>
12 #include <botan/pubkey.h>
13 #include <botan/hash.h>
14
15 namespace Botan {
16
17 namespace {
18
19 /*
20 * Load information from the X509_Cert_Options
21 */
22 void load_info(const X509_Cert_Options& opts, X509_DN& subject_dn,
23 AlternativeName& subject_alt)
24 {
25 subject_dn.add_attribute("X520.CommonName", opts.common_name);
26 subject_dn.add_attribute("X520.Country", opts.country);
27 subject_dn.add_attribute("X520.State", opts.state);
28 subject_dn.add_attribute("X520.Locality", opts.locality);
29 subject_dn.add_attribute("X520.Organization", opts.organization);
30 subject_dn.add_attribute("X520.OrganizationalUnit", opts.org_unit);
31 for(auto extra_ou : opts.more_org_units) {
32 subject_dn.add_attribute("X520.OrganizationalUnit", extra_ou);
33 }
34
35 subject_dn.add_attribute("X520.SerialNumber", opts.serial_number);
36 subject_alt = AlternativeName(opts.email, opts.uri, opts.dns, opts.ip);
37 subject_alt.add_othername(OID::from_string("PKIX.XMPPAddr"),
38 opts.xmpp, UTF8_STRING);
39
40 for(auto dns : opts.more_dns)
41 subject_alt.add_attribute("DNS", dns);
42 }
43 }
44
45 namespace X509 {
46
47 /*
48 * Create a new self-signed X.509 certificate
49 */
50 X509_Certificate create_self_signed_cert(const X509_Cert_Options& opts,
51 const Private_Key& key,
52 const std::string& hash_fn,
53 RandomNumberGenerator& rng)
54 {
55 AlgorithmIdentifier sig_algo;
56 X509_DN subject_dn;
57 AlternativeName subject_alt;
58
59 // for now, only the padding option is used
60 std::map<std::string,std::string> sig_opts = { {"padding",opts.padding_scheme} };
61
62 const std::vector<uint8_t> pub_key = X509::BER_encode(key);
63 std::unique_ptr<PK_Signer> signer(choose_sig_format(key, sig_opts, rng, hash_fn, sig_algo));
64 BOTAN_ASSERT_NOMSG(sig_algo.get_oid().has_value());
65 load_info(opts, subject_dn, subject_alt);
66
67 Extensions extensions = opts.extensions;
68
69 Key_Constraints constraints;
70 if(opts.is_CA)
71 {
72 constraints = Key_Constraints(KEY_CERT_SIGN | CRL_SIGN);
73 }
74 else
75 {
76 verify_cert_constraints_valid_for_key_type(key, opts.constraints);
77 constraints = opts.constraints;
78 }
79
80 extensions.add_new(
81 new Cert_Extension::Basic_Constraints(opts.is_CA, opts.path_limit),
82 true);
83
84 if(constraints != NO_CONSTRAINTS)
85 {
86 extensions.add_new(new Cert_Extension::Key_Usage(constraints), true);
87 }
88
89 std::unique_ptr<Cert_Extension::Subject_Key_ID> skid(new Cert_Extension::Subject_Key_ID(pub_key, hash_fn));
90
91 extensions.add_new(new Cert_Extension::Authority_Key_ID(skid->get_key_id()));
92 extensions.add_new(skid.release());
93
94 extensions.add_new(
95 new Cert_Extension::Subject_Alternative_Name(subject_alt));
96
97 extensions.add_new(
98 new Cert_Extension::Extended_Key_Usage(opts.ex_constraints));
99
100 return X509_CA::make_cert(signer.get(), rng, sig_algo, pub_key,
101 opts.start, opts.end,
102 subject_dn, subject_dn,
103 extensions);
104 }
105
106 /*
107 * Create a PKCS #10 certificate request
108 */
109 PKCS10_Request create_cert_req(const X509_Cert_Options& opts,
110 const Private_Key& key,
111 const std::string& hash_fn,
112 RandomNumberGenerator& rng)
113 {
114 X509_DN subject_dn;
115 AlternativeName subject_alt;
116 load_info(opts, subject_dn, subject_alt);
117
118 Key_Constraints constraints;
119 if(opts.is_CA)
120 {
121 constraints = Key_Constraints(KEY_CERT_SIGN | CRL_SIGN);
122 }
123 else
124 {
125 verify_cert_constraints_valid_for_key_type(key, opts.constraints);
126 constraints = opts.constraints;
127 }
128
129 Extensions extensions = opts.extensions;
130
131 extensions.add_new(new Cert_Extension::Basic_Constraints(opts.is_CA, opts.path_limit));
132
133 if(constraints != NO_CONSTRAINTS)
134 {
135 extensions.add_new(new Cert_Extension::Key_Usage(constraints));
136 }
137 extensions.add_new(new Cert_Extension::Extended_Key_Usage(opts.ex_constraints));
138 extensions.add_new(new Cert_Extension::Subject_Alternative_Name(subject_alt));
139
140 return PKCS10_Request::create(key,
141 subject_dn,
142 extensions,
143 hash_fn,
144 rng,
145 opts.padding_scheme,
146 opts.challenge);
147 }
148
149 }
150
151 }
Botan::Cert_Extension::Key_Usage
Definition: x509_ext.h:326
Botan::X509::create_cert_req
PKCS10_Request create_cert_req(const X509_Cert_Options &opts, const Private_Key &key, const std::string &hash_fn, RandomNumberGenerator &rng)
Definition: x509self.cpp:109
Botan::X509_CA::make_cert
static X509_Certificate make_cert(PK_Signer *signer, RandomNumberGenerator &rng, const AlgorithmIdentifier &sig_algo, const std::vector< uint8_t > &pub_key, const X509_Time &not_before, const X509_Time &not_after, const X509_DN &issuer_dn, const X509_DN &subject_dn, const Extensions &extensions)
Definition: x509_ca.cpp:150
Botan::RandomNumberGenerator
Definition: rng.h:24
Botan::Private_Key
Definition: pk_keys.h:181
Botan::PKCS10_Request::create
static PKCS10_Request create(const Private_Key &key, const X509_DN &subject_dn, const Extensions &extensions, const std::string &hash_fn, RandomNumberGenerator &rng, const std::string &padding_scheme="", const std::string &challenge="")
Definition: pkcs10.cpp:58
Botan::X509::BER_encode
std::vector< uint8_t > BER_encode(const Public_Key &key)
Definition: x509_key.cpp:19
Botan::X509_Cert_Options::extensions
Extensions extensions
Definition: x509self.h:136
Botan::Cert_Extension::Subject_Alternative_Name
Definition: x509_ext.h:416
BOTAN_ASSERT_NOMSG
#define BOTAN_ASSERT_NOMSG(expr)
Definition: assert.h:68
Botan::Extensions
Definition: x509_ext.h:90
Botan::Cert_Extension::Extended_Key_Usage
Definition: x509_ext.h:472
Botan::Cert_Extension::Subject_Key_ID
Definition: x509_ext.h:353
Botan::Cert_Extension::Basic_Constraints
Definition: x509_ext.h:296
Botan::X509_Cert_Options::path_limit
size_t path_limit
Definition: x509self.h:119
Botan::NO_CONSTRAINTS
Definition: key_constraint.h:22
Botan::CRL_SIGN
Definition: key_constraint.h:29
Botan::X509_Certificate
Definition: x509cert.h:40
Botan::Extensions::add_new
bool add_new(Certificate_Extension *extn, bool critical=false)
Definition: x509_ext.cpp:139
Botan::X509_Cert_Options::is_CA
bool is_CA
Definition: x509self.h:114
Botan::X509_Cert_Options::constraints
Key_Constraints constraints
Definition: x509self.h:126
Botan::X509_Cert_Options::padding_scheme
std::string padding_scheme
Definition: x509self.h:121
Botan::X509_DN
Definition: x509_dn.h:24
Botan::PKCS11::CertificateType::X509
Botan::X509::create_self_signed_cert
X509_Certificate create_self_signed_cert(const X509_Cert_Options &opts, const Private_Key &key, const std::string &hash_fn, RandomNumberGenerator &rng)
Definition: x509self.cpp:50
Botan::PKCS10_Request
Definition: pkcs10.h:28
Botan
Definition: alg_id.cpp:13
Botan::AlgorithmIdentifier::get_oid
const OID & get_oid() const
Definition: alg_id.h:37
Botan::OID::has_value
bool has_value() const
Definition: asn1_oid.h:65
Botan::UTF8_STRING
Definition: asn1_obj.h:43
Botan::verify_cert_constraints_valid_for_key_type
void verify_cert_constraints_valid_for_key_type(const Public_Key &pub_key, Key_Constraints constraints)
Definition: key_constraint.cpp:70
Botan::choose_sig_format
PK_Signer * choose_sig_format(const Private_Key &key, RandomNumberGenerator &rng, const std::string &hash_fn, AlgorithmIdentifier &sig_algo)
Definition: x509_ca.cpp:318
Botan::AlgorithmIdentifier
Definition: alg_id.h:21
Botan::X509_Cert_Options::end
X509_Time end
Definition: x509self.h:109
Botan::Cert_Extension::Authority_Key_ID
Definition: x509_ext.h:387
Botan::X509_Cert_Options
Definition: x509self.h:24
Botan::X509_Cert_Options::start
X509_Time start
Definition: x509self.h:105
Botan::Key_Constraints
Key_Constraints
Definition: key_constraint.h:21
Botan::X509_Cert_Options::ex_constraints
std::vector< OID > ex_constraints
Definition: x509self.h:131
Botan::KEY_CERT_SIGN
Definition: key_constraint.h:28
Botan::X509_Cert_Options::challenge
std::string challenge
Definition: x509self.h:100
Botan::AlternativeName
Definition: asn1_alt_name.h:21
Botan::OID::from_string
static OID from_string(const std::string &str)
Definition: asn1_oid.cpp:62