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diff --git a/utils/zenutils/source/shared/crypt.h b/utils/zenutils/source/shared/crypt.h
new file mode 100755
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+++ b/utils/zenutils/source/shared/crypt.h
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+/* zenutils - Utilities for working with creative firmwares.

+ * Copyright 2007 (c) Rasmus Ry <rasmus.ry{at}gmail.com>

+ *

+ * This program is free software; you can redistribute it and/or modify

+ * it under the terms of the GNU General Public License as published by

+ * the Free Software Foundation; either version 2 of the License, or

+ * (at your option) any later version.

+ *

+ * This program is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+ * GNU General Public License for more details.

+ *

+ * You should have received a copy of the GNU General Public License

+ * along with this program; if not, write to the Free Software

+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

+ */

+

+#ifndef ZEN_CRYPT_H_INCLUDED

+#define ZEN_CRYPT_H_INCLUDED

+

+#include <utils.h>

+

+namespace zen {

+    bool hmac_sha1_calc(const byte* key, size_t keylen, const byte* data, size_t datalen, byte* sig, size_t* siglen);

+    bool bf_cbc_encrypt(const byte* key, size_t keylen, byte* data, size_t datalen, const byte* iv);

+    bool bf_cbc_decrypt(const byte* key, size_t keylen, byte* data, size_t datalen, const byte* iv);

+}; //namespace zen

+

+#endif //ZEN_CRYPT_H_INCLUDED