Move crypto files out of base, to a top level directory.

src/crypto is now an independent project that contains our
cryptographic primitives (except md5 and sha1).

This removes the base dependency from nss, openssl and sqlite.

BUG=76996
TEST=none
Review URL: http://codereview.chromium.org/6805019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81611 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 60 insertions, 0 deletions

diff --git a/crypto/cssm_init.h b/crypto/cssm_init.h
new file mode 100644
index 0000000..9093b0f
--- /dev/null
+++ b/crypto/cssm_init.h
@@ -0,0 +1,60 @@
+// Copyright (c) 2011 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.
+
+#ifndef CRYPTO_CSSM_INIT_H_
+#define CRYPTO_CSSM_INIT_H_
+#pragma once
+
+#include <Security/cssm.h>
+
+#include "base/basictypes.h"
+
+namespace crypto {
+
+// Initialize CSSM if it isn't already initialized.  This must be called before
+// any other CSSM functions.  This function is thread-safe, and CSSM will only
+// ever be initialized once.  CSSM will be properly shut down on program exit.
+void EnsureCSSMInit();
+
+// Returns the shared CSP handle used by CSSM functions.
+CSSM_CSP_HANDLE GetSharedCSPHandle();
+
+// Returns the shared CL handle used by CSSM functions.
+CSSM_CL_HANDLE GetSharedCLHandle();
+
+// Returns the shared TP handle used by CSSM functions.
+CSSM_TP_HANDLE GetSharedTPHandle();
+
+// Set of pointers to memory function wrappers that are required for CSSM
+extern const CSSM_API_MEMORY_FUNCS kCssmMemoryFunctions;
+
+// Utility function to log an error message including the error name.
+void LogCSSMError(const char *function_name, CSSM_RETURN err);
+
+// Utility functions to allocate and release CSSM memory.
+void* CSSMMalloc(CSSM_SIZE size);
+void CSSMFree(void* ptr);
+
+// Wrapper class for CSSM_DATA type. This should only be used when using the
+// CL/TP/CSP handles from above, since that's the only time we're guaranteed (or
+// supposed to be guaranteed) that our memory management functions will be used.
+// Apple's Sec* APIs manage their own memory so it shouldn't be used for those.
+// The constructor initializes data_ to zero and the destructor releases the
+// data properly.
+class ScopedCSSMData {
+ public:
+  ScopedCSSMData();
+  ~ScopedCSSMData();
+  operator CSSM_DATA*() { return &data_; }
+  CSSM_DATA* operator ->() { return &data_; }
+
+ private:
+  CSSM_DATA data_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedCSSMData);
+};
+
+}  // namespace crypto
+
+#endif  // CRYPTO_CSSM_INIT_H_