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, 36 insertions, 0 deletions

diff --git a/crypto/secure_hash.h b/crypto/secure_hash.h
new file mode 100644
index 0000000..35a2f8b
--- /dev/null
+++ b/crypto/secure_hash.h
@@ -0,0 +1,36 @@
+// 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_SECURE_HASH_H_
+#define CRYPTO_SECURE_HASH_H_
+#pragma once
+
+#include "base/basictypes.h"
+
+namespace crypto {
+
+// A wrapper to calculate secure hashes incrementally, allowing to
+// be used when the full input is not known in advance.
+class SecureHash {
+ public:
+  enum Algorithm {
+    SHA256,
+  };
+  virtual ~SecureHash() {}
+
+  static SecureHash* Create(Algorithm type);
+
+  virtual void Update(const void* input, size_t len) = 0;
+  virtual void Finish(void* output, size_t len) = 0;
+
+ protected:
+  SecureHash() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SecureHash);
+};
+
+}  // namespace crypto
+
+#endif  // CRYPTO_SECURE_HASH_H_