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+Calculates the md5sum of a file or string.
+Has been tested to work with NSIS 2.0+
+
+
+Derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm
+
+[Md5Dll]
+Matthew "IGx89" Lieder
+  -Original plugin Author
+
+Sunjammer (12th May 2002)
+  -Original usage notes and example script 
+
+[Md5Dll.0.1]
+KJD (2004)
+  -Modified to reduce size and use exdll.h
+   (reduced to about 6KB uncompressed, by removing CRTL dependency)
+
+[Md5dll.0.2]
+Davy Durham (2004)
+  -MD5.cpp fix (correct for loop used to replace memset, exceeded bounds)
+
+[Md5dll.0.3]
+Shengalts Aleksander aka Instructor (2005)
+  -New command: "GetMD5Random"
+  -Changed names: "GetFileMD5" -> "GetMD5File", "GetMD5" -> "GetMD5String"
+  -Fixed: string length error
+
+[Md5dll.0.4]
+KJD (2005)
+  -Added dual name to exports for backwards compatibility
+
+
+--------------------------------
+
+Usage:
+
+Push $1 ;string
+CallInstDll "md5dll" GetMD5String
+Pop $1 ;md5 of string
+
+-or-
+
+Push $1 ;filename
+CallInstDll "md5dll" GetMD5File
+Pop $1 ;md5 of file
+
+--------------------------------
+
+Example usage in recent NSIS versions
+
+OutFile "md5test.exe"
+Section ""
+  #generate MD5sum of a string
+  md5dll::GetMD5String "md5me"
+  Pop $0
+  DetailPrint "md5: [$0]"
+
+  # generate MD5sum of a file
+  md5dll::GetMD5File "${NSISDIR}\makensis.exe"
+  Pop $0
+  DetailPrint "md5: [$0]"
+
+  #generate random MD5sum
+  md5dll::GetMD5Random
+  Pop $0
+  DetailPrint "md5: [$0]"
+SectionEnd