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diff --git a/plugin/file_key_management/parser.h b/plugin/file_key_management/parser.h
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+/* Copyright (C) 2014 eperi GmbH.
+
+ 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; version 2 of the License.
+
+ 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+/******************************************************************//**
+@file Parser.h
+A structure and class to keep keys for encryption/decryption.
+
+Created 09/15/2014
+***********************************************************************/
+
+#include <my_crypt.h>
+#include <ctype.h>
+#include <map>
+#include <stdlib.h> /* size_t */
+
+struct keyentry {
+  unsigned int id;
+  unsigned char key[MY_AES_MAX_KEY_LENGTH];
+  unsigned int length;
+};
+
+class Parser
+{
+  const char *filename;
+  const char *filekey;
+  unsigned int line_number;
+
+  unsigned int from_hex(char c)
+  { return c <= '9' ? c - '0' : tolower(c) - 'a' + 10; }
+
+  void bytes_to_key(const unsigned char *salt, const char *secret,
+                    unsigned char *key, unsigned char *iv);
+  bool read_filekey(const char *filekey, char *secret);
+  bool parse_file(std::map<unsigned int ,keyentry> *keys, const char *secret);
+  void report_error(const char *reason, size_t position);
+  int parse_line(char **line_ptr, keyentry *key);
+  char* read_and_decrypt_file(const char *secret);
+
+public:
+  Parser(const char* fn, const char *fk) :
+    filename(fn), filekey(fk), line_number(0) { }
+  bool parse(std::map<unsigned int ,keyentry> *keys);
+};