Adds first cut implementation of a private key store abstraction for openssl

net/base/openssl_memory_private_key_store.cc

Index: net/base/openssl_memory_private_key_store.cc
diff --git a/net/base/openssl_memory_private_key_store.cc b/net/base/openssl_memory_private_key_store.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8dc69a0a52195105287ba7d40ae657e33555307b
--- /dev/null
+++ b/net/base/openssl_memory_private_key_store.cc
@@ -0,0 +1,64 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Defines an in-memory private key store, primarily used for testing.
+
+#include <openssl/evp.h>
+
+#include "net/base/openssl_private_key_store.h"
+
+#include "base/logging.h"
+#include "base/openssl_util.h"
+#include "base/singleton.h"
+#include "net/base/x509_certificate.h"
+
+namespace net {
+
+namespace {
+
+class OpenSSLMemoryKeyStore : public OpenSSLPrivateKeyStore {
+ public:
+  OpenSSLMemoryKeyStore() {}
+
+  virtual ~OpenSSLMemoryKeyStore() {
+    AutoLock lock(lock_);
+    for (std::vector<EVP_PKEY*>::iterator it = keys_.begin();
+         it != keys_.end(); ++it) {
+      EVP_PKEY_free(*it);
+    }
+  }
+
+  virtual bool StorePrivateKey(const GURL& url, EVP_PKEY* pkey) {
+    CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
+    AutoLock lock(lock_);
+    keys_.push_back(pkey);
+    return true;
+  }
+
+  virtual EVP_PKEY* FetchPrivateKey(EVP_PKEY* pkey) {
+    AutoLock lock(lock_);
+    for (std::vector<EVP_PKEY*>::iterator it = keys_.begin();
+         it != keys_.end(); ++it) {
+      if (EVP_PKEY_cmp(*it, pkey) == 1)
+        return *it;
+    }
+    return NULL;
+  }
+
+ private:
+  std::vector<EVP_PKEY*> keys_;
+  Lock lock_;
+
+  DISALLOW_COPY_AND_ASSIGN(OpenSSLMemoryKeyStore);
+};
+
+}  // namespace
+
+// static
+OpenSSLPrivateKeyStore* OpenSSLPrivateKeyStore::GetInstance() {
+  return Singleton<OpenSSLMemoryKeyStore>::get();
+}
+
+} // namespace net
+