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Diffstat (limited to '')
-rw-r--r-- | comm/third_party/botan/src/lib/x509/x509self.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/x509/x509self.cpp b/comm/third_party/botan/src/lib/x509/x509self.cpp new file mode 100644 index 0000000000..f75827fd83 --- /dev/null +++ b/comm/third_party/botan/src/lib/x509/x509self.cpp @@ -0,0 +1,152 @@ +/* +* PKCS #10/Self Signed Cert Creation +* (C) 1999-2008,2018 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/x509self.h> +#include <botan/x509_key.h> +#include <botan/x509_ext.h> +#include <botan/x509_ca.h> +#include <botan/der_enc.h> +#include <botan/pubkey.h> +#include <botan/hash.h> + +namespace Botan { + +namespace { + +/* +* Load information from the X509_Cert_Options +*/ +void load_info(const X509_Cert_Options& opts, X509_DN& subject_dn, + AlternativeName& subject_alt) + { + subject_dn.add_attribute("X520.CommonName", opts.common_name); + subject_dn.add_attribute("X520.Country", opts.country); + subject_dn.add_attribute("X520.State", opts.state); + subject_dn.add_attribute("X520.Locality", opts.locality); + subject_dn.add_attribute("X520.Organization", opts.organization); + subject_dn.add_attribute("X520.OrganizationalUnit", opts.org_unit); + for(auto extra_ou : opts.more_org_units) { + subject_dn.add_attribute("X520.OrganizationalUnit", extra_ou); + } + + subject_dn.add_attribute("X520.SerialNumber", opts.serial_number); + subject_alt = AlternativeName(opts.email, opts.uri, opts.dns, opts.ip); + subject_alt.add_othername(OID::from_string("PKIX.XMPPAddr"), + opts.xmpp, UTF8_STRING); + + for(auto dns : opts.more_dns) + subject_alt.add_attribute("DNS", dns); + } +} + +namespace X509 { + +/* +* Create a new self-signed X.509 certificate +*/ +X509_Certificate create_self_signed_cert(const X509_Cert_Options& opts, + const Private_Key& key, + const std::string& hash_fn, + RandomNumberGenerator& rng) + { + AlgorithmIdentifier sig_algo; + X509_DN subject_dn; + AlternativeName subject_alt; + + // for now, only the padding option is used + std::map<std::string,std::string> sig_opts = { {"padding",opts.padding_scheme} }; + + const std::vector<uint8_t> pub_key = X509::BER_encode(key); + std::unique_ptr<PK_Signer> signer(choose_sig_format(key, sig_opts, rng, hash_fn, sig_algo)); + BOTAN_ASSERT_NOMSG(sig_algo.get_oid().has_value()); + load_info(opts, subject_dn, subject_alt); + + Extensions extensions = opts.extensions; + + Key_Constraints constraints; + if(opts.is_CA) + { + constraints = Key_Constraints(KEY_CERT_SIGN | CRL_SIGN); + } + else + { + verify_cert_constraints_valid_for_key_type(key, opts.constraints); + constraints = opts.constraints; + } + + extensions.add_new( + new Cert_Extension::Basic_Constraints(opts.is_CA, opts.path_limit), + true); + + if(constraints != NO_CONSTRAINTS) + { + extensions.add_new(new Cert_Extension::Key_Usage(constraints), true); + } + + std::unique_ptr<Cert_Extension::Subject_Key_ID> skid(new Cert_Extension::Subject_Key_ID(pub_key, hash_fn)); + + extensions.add_new(new Cert_Extension::Authority_Key_ID(skid->get_key_id())); + extensions.add_new(skid.release()); + + extensions.add_new( + new Cert_Extension::Subject_Alternative_Name(subject_alt)); + + extensions.add_new( + new Cert_Extension::Extended_Key_Usage(opts.ex_constraints)); + + return X509_CA::make_cert(signer.get(), rng, sig_algo, pub_key, + opts.start, opts.end, + subject_dn, subject_dn, + extensions); + } + +/* +* Create a PKCS #10 certificate request +*/ +PKCS10_Request create_cert_req(const X509_Cert_Options& opts, + const Private_Key& key, + const std::string& hash_fn, + RandomNumberGenerator& rng) + { + X509_DN subject_dn; + AlternativeName subject_alt; + load_info(opts, subject_dn, subject_alt); + + Key_Constraints constraints; + if(opts.is_CA) + { + constraints = Key_Constraints(KEY_CERT_SIGN | CRL_SIGN); + } + else + { + verify_cert_constraints_valid_for_key_type(key, opts.constraints); + constraints = opts.constraints; + } + + Extensions extensions = opts.extensions; + + extensions.add_new(new Cert_Extension::Basic_Constraints(opts.is_CA, opts.path_limit)); + + if(constraints != NO_CONSTRAINTS) + { + extensions.add_new(new Cert_Extension::Key_Usage(constraints)); + } + extensions.add_new(new Cert_Extension::Extended_Key_Usage(opts.ex_constraints)); + extensions.add_new(new Cert_Extension::Subject_Alternative_Name(subject_alt)); + + return PKCS10_Request::create(key, + subject_dn, + extensions, + hash_fn, + rng, + opts.padding_scheme, + opts.challenge); + } + +} + +} |