1 files changed, 176 insertions, 0 deletions
diff --git a/botan/src/cert/x509/x509self.cpp b/botan/src/cert/x509/x509self.cpp
new file mode 100644
index 0000000..8afb22a
--- /dev/null
+++ b/botan/src/cert/x509/x509self.cpp
@@ -0,0 +1,176 @@
+/*
+* PKCS #10/Self Signed Cert Creation
+* (C) 1999-2008 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/x509self.h>
+#include <botan/x509_ext.h>
+#include <botan/x509_ca.h>
+#include <botan/der_enc.h>
+#include <botan/look_pk.h>
+#include <botan/oids.h>
+#include <botan/pipe.h>
+#include <memory>
+
+namespace Botan {
+
+namespace {
+
+/*
+* Shared setup for self-signed items
+*/
+MemoryVector<byte> shared_setup(const X509_Cert_Options& opts,
+                                const Private_Key& key)
+   {
+   const Private_Key* key_pointer = &key;
+   if(!dynamic_cast<const PK_Signing_Key*>(key_pointer))
+      throw Invalid_Argument("Key type " + key.algo_name() + " cannot sign");
+
+   opts.sanity_check();
+
+   Pipe key_encoder;
+   key_encoder.start_msg();
+   X509::encode(key, key_encoder, RAW_BER);
+   key_encoder.end_msg();
+
+   return key_encoder.read_all();
+   }
+
+/*
+* 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);
+   subject_dn.add_attribute("X520.SerialNumber", opts.serial_number);
+   subject_alt = AlternativeName(opts.email, opts.uri, opts.dns, opts.ip);
+   subject_alt.add_othername(OIDS::lookup("PKIX.XMPPAddr"),
+                             opts.xmpp, UTF8_STRING);
+   }
+
+}
+
+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,
+                                         RandomNumberGenerator& rng)
+   {
+   AlgorithmIdentifier sig_algo;
+   X509_DN subject_dn;
+   AlternativeName subject_alt;
+
+   MemoryVector<byte> pub_key = shared_setup(opts, key);
+   std::auto_ptr<PK_Signer> signer(choose_sig_format(key, sig_algo));
+   load_info(opts, subject_dn, subject_alt);
+
+   Key_Constraints constraints;
+   if(opts.is_CA)
+      constraints = Key_Constraints(KEY_CERT_SIGN | CRL_SIGN);
+   else
+      constraints = find_constraints(key, opts.constraints);
+
+   Extensions extensions;
+
+   extensions.add(new Cert_Extension::Subject_Key_ID(pub_key));
+   extensions.add(new Cert_Extension::Key_Usage(constraints));
+   extensions.add(
+      new Cert_Extension::Extended_Key_Usage(opts.ex_constraints));
+   extensions.add(
+      new Cert_Extension::Subject_Alternative_Name(subject_alt));
+   extensions.add(
+      new Cert_Extension::Basic_Constraints(opts.is_CA, opts.path_limit));
+
+   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,
+                               RandomNumberGenerator& rng)
+   {
+   AlgorithmIdentifier sig_algo;
+   X509_DN subject_dn;
+   AlternativeName subject_alt;
+
+   MemoryVector<byte> pub_key = shared_setup(opts, key);
+   std::auto_ptr<PK_Signer> signer(choose_sig_format(key, sig_algo));
+   load_info(opts, subject_dn, subject_alt);
+
+   const u32bit PKCS10_VERSION = 0;
+
+   Extensions extensions;
+
+   extensions.add(
+      new Cert_Extension::Basic_Constraints(opts.is_CA, opts.path_limit));
+   extensions.add(
+      new Cert_Extension::Key_Usage(
+         opts.is_CA ? Key_Constraints(KEY_CERT_SIGN | CRL_SIGN) :
+                      find_constraints(key, opts.constraints)
+         )
+      );
+   extensions.add(
+      new Cert_Extension::Extended_Key_Usage(opts.ex_constraints));
+   extensions.add(
+      new Cert_Extension::Subject_Alternative_Name(subject_alt));
+
+   DER_Encoder tbs_req;
+
+   tbs_req.start_cons(SEQUENCE)
+      .encode(PKCS10_VERSION)
+      .encode(subject_dn)
+      .raw_bytes(pub_key)
+      .start_explicit(0);
+
+   if(opts.challenge != "")
+      {
+      ASN1_String challenge(opts.challenge, DIRECTORY_STRING);
+
+      tbs_req.encode(
+         Attribute("PKCS9.ChallengePassword",
+                   DER_Encoder().encode(challenge).get_contents()
+            )
+         );
+      }
+
+   tbs_req.encode(
+      Attribute("PKCS9.ExtensionRequest",
+                DER_Encoder()
+                   .start_cons(SEQUENCE)
+                      .encode(extensions)
+                   .end_cons()
+               .get_contents()
+         )
+      )
+      .end_explicit()
+      .end_cons();
+
+   DataSource_Memory source(
+      X509_Object::make_signed(signer.get(),
+                               rng,
+                               sig_algo,
+                               tbs_req.get_contents())
+      );
+
+   return PKCS10_Request(source);
+   }
+
+}
+
+}