Initial version of tpm_init, a library for taking ownership of the TPM.

secure_blob.cc

Index: secure_blob.cc
diff --git a/secure_blob.cc b/secure_blob.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8802c709d426ed0ce399b9b62c11518d981c309d
--- /dev/null
+++ b/secure_blob.cc
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+// Copyright (c) 2009-2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "secure_blob.h"
+
+namespace tpm_init {
+
+SecureBlob::SecureBlob()
+    : chromeos::Blob() {
+}
+
+SecureBlob::SecureBlob(chromeos::Blob::const_iterator begin,
+                       chromeos::Blob::const_iterator end)
+    : chromeos::Blob(begin, end) {
+}
+
+SecureBlob::SecureBlob(int size)
+    : chromeos::Blob(size) {
+}
+
+SecureBlob::SecureBlob(const unsigned char* from, int from_length)
+    : chromeos::Blob(from_length) {
+  memcpy(data(), from, from_length);
+}
+
+SecureBlob::SecureBlob(const char* from, int from_length)
+    : chromeos::Blob(from_length) {
+  memcpy(data(), from, from_length);
+}
+
+SecureBlob::~SecureBlob() {
+  chromeos::SecureMemset(&this->front(), 0, this->capacity());
+}
+
+void SecureBlob::resize(size_type sz) {
+  if(sz < size()) {
+    chromeos::SecureMemset(&this->at(sz), 0, size() - sz);
+  }
+  chromeos::Blob::resize(sz);
+}
+
+void SecureBlob::resize(size_type sz, const SecureBlobElement& x) {
+  if(sz < size()) {
+    chromeos::SecureMemset(&this->at(sz), 0, size() - sz);
+  }
+  chromeos::Blob::resize(sz, x);
+}
+
+void SecureBlob::clear_contents() {
+  chromeos::SecureMemset(this->data(), 0, size());
+}
+
+void* SecureBlob::data() {
+  return &(this->front());
+}
+
+const void* SecureBlob::const_data() const {
+  return &(this->front());
+}
+
+}  // namespace tpm_init