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diff --git a/src/cpp/client/credentials.cc b/src/cpp/client/credentials.cc
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <string>
+
+#include <grpc/grpc_security.h>
+
+#include <grpc++/credentials.h>
+
+namespace grpc {
+
+Credentials::Credentials(grpc_credentials* c_creds) : creds_(c_creds) {}
+
+Credentials::~Credentials() { grpc_credentials_release(creds_); }
+grpc_credentials* Credentials::GetRawCreds() { return creds_; }
+
+std::unique_ptr<Credentials> CredentialsFactory::DefaultCredentials() {
+  grpc_credentials* c_creds = grpc_default_credentials_create();
+  std::unique_ptr<Credentials> cpp_creds(new Credentials(c_creds));
+  return cpp_creds;
+}
+
+// Builds SSL Credentials given SSL specific options
+std::unique_ptr<Credentials> CredentialsFactory::SslCredentials(
+    const SslCredentialsOptions& options) {
+  grpc_credentials* c_creds = grpc_ssl_credentials_create(
+      reinterpret_cast<const unsigned char*>(options.pem_root_certs.c_str()),
+      options.pem_root_certs.size(),
+      reinterpret_cast<const unsigned char*>(options.pem_private_key.c_str()),
+      options.pem_private_key.size(),
+      reinterpret_cast<const unsigned char*>(options.pem_cert_chain.c_str()),
+      options.pem_cert_chain.size());
+  std::unique_ptr<Credentials> cpp_creds(new Credentials(c_creds));
+  return cpp_creds;
+}
+
+// Builds credentials for use when running in GCE
+std::unique_ptr<Credentials> CredentialsFactory::ComputeEngineCredentials() {
+  grpc_credentials* c_creds = grpc_compute_engine_credentials_create();
+  std::unique_ptr<Credentials> cpp_creds(new Credentials(c_creds));
+  return cpp_creds;
+}
+
+
+// Combines two credentials objects into a composite credentials.
+std::unique_ptr<Credentials> CredentialsFactory::ComposeCredentials(
+    const std::unique_ptr<Credentials>& creds1,
+    const std::unique_ptr<Credentials>& creds2) {
+  // Note that we are not saving unique_ptrs to the two credentials
+  // passed in here. This is OK because the underlying C objects (i.e.,
+  // creds1 and creds2) into grpc_composite_credentials_create will see their
+  // refcounts incremented.
+  grpc_credentials* c_creds = grpc_composite_credentials_create(
+      creds1->GetRawCreds(), creds2->GetRawCreds());
+  std::unique_ptr<Credentials> cpp_creds(new Credentials(c_creds));
+  return cpp_creds;
+}
+
+}  // namespace grpc