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Calculate MD5, SHA1, SHA256, SHA384, SHA512 and RIPEMD160 of files

This is my first experience to write scripts on F# that's why I'll be pleased if somebody will make this snippet more perfectly. Usage: fsi hasher.fsx foo test.dat test.txt bar

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open System
open System.IO
open System.Security.Cryptography

let types = [|"MD5"; "SHA1"; "SHA256"; "SHA384"; "SHA512"; "RIPEMD160"|]

for arg in fsi.CommandLineArgs |> Seq.skip 1 do
  let itm = Path.GetFullPath(arg)

  if File.Exists(itm) then
    if (new FileInfo(itm)).Length <> 0L then
      printfn "\n%s:" itm
      let content = File.ReadAllBytes(itm)
      for t in types do
        let bytes = content |> HashAlgorithm.Create(t).ComputeHash
        Console.WriteLine("{0, 9}: {1}", t, BitConverter.ToString(bytes).Replace("-", "").ToLower())
    else
      printfn "File %s has null length." arg
  else
    printfn "File %s does not exist." arg

namespace System

namespace System.IO

namespace System.Security

namespace System.Security.Cryptography

val types : string []

Full name: Script.types

val arg : string

val fsi : Compiler.Interactive.InteractiveSession

Full name: Microsoft.FSharp.Compiler.Interactive.Settings.fsi

property Compiler.Interactive.InteractiveSession.CommandLineArgs: string []

module Seq

from Microsoft.FSharp.Collections

val skip : count:int -> source:seq<'T> -> seq<'T>

Full name: Microsoft.FSharp.Collections.Seq.skip

val itm : string

type Path =
  static val DirectorySeparatorChar : char
  static val AltDirectorySeparatorChar : char
  static val VolumeSeparatorChar : char
  static val InvalidPathChars : char[]
  static val PathSeparator : char
  static member ChangeExtension : path:string * extension:string -> string
  static member Combine : [<ParamArray>] paths:string[] -> string + 3 overloads
  static member GetDirectoryName : path:string -> string
  static member GetExtension : path:string -> string
  static member GetFileName : path:string -> string
  ...

Full name: System.IO.Path

Path.GetFullPath(path: string) : string

type File =
  static member AppendAllLines : path:string * contents:IEnumerable<string> -> unit + 1 overload
  static member AppendAllText : path:string * contents:string -> unit + 1 overload
  static member AppendText : path:string -> StreamWriter
  static member Copy : sourceFileName:string * destFileName:string -> unit + 1 overload
  static member Create : path:string -> FileStream + 3 overloads
  static member CreateText : path:string -> StreamWriter
  static member Decrypt : path:string -> unit
  static member Delete : path:string -> unit
  static member Encrypt : path:string -> unit
  static member Exists : path:string -> bool
  ...

Full name: System.IO.File

File.Exists(path: string) : bool

Multiple items
type FileInfo =
  inherit FileSystemInfo
  new : fileName:string -> FileInfo
  member AppendText : unit -> StreamWriter
  member CopyTo : destFileName:string -> FileInfo + 1 overload
  member Create : unit -> FileStream
  member CreateText : unit -> StreamWriter
  member Decrypt : unit -> unit
  member Delete : unit -> unit
  member Directory : DirectoryInfo
  member DirectoryName : string
  member Encrypt : unit -> unit
  ...

Full name: System.IO.FileInfo

--------------------
FileInfo(fileName: string) : unit

val printfn : format:Printf.TextWriterFormat<'T> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.printfn

val content : byte []

File.ReadAllBytes(path: string) : byte []

val t : string

val bytes : byte []

type HashAlgorithm =
  member CanReuseTransform : bool
  member CanTransformMultipleBlocks : bool
  member Clear : unit -> unit
  member ComputeHash : inputStream:Stream -> byte[] + 2 overloads
  member Dispose : unit -> unit
  member Hash : byte[]
  member HashSize : int
  member Initialize : unit -> unit
  member InputBlockSize : int
  member OutputBlockSize : int
  ...

Full name: System.Security.Cryptography.HashAlgorithm

HashAlgorithm.Create() : HashAlgorithm
HashAlgorithm.Create(hashName: string) : HashAlgorithm

type Console =
  static member BackgroundColor : ConsoleColor with get, set
  static member Beep : unit -> unit + 1 overload
  static member BufferHeight : int with get, set
  static member BufferWidth : int with get, set
  static member CapsLock : bool
  static member Clear : unit -> unit
  static member CursorLeft : int with get, set
  static member CursorSize : int with get, set
  static member CursorTop : int with get, set
  static member CursorVisible : bool with get, set
  ...

Full name: System.Console

Console.WriteLine() : unit
   (+0 other overloads)
Console.WriteLine(value: string) : unit
   (+0 other overloads)
Console.WriteLine(value: obj) : unit
   (+0 other overloads)
Console.WriteLine(value: uint64) : unit
   (+0 other overloads)
Console.WriteLine(value: int64) : unit
   (+0 other overloads)
Console.WriteLine(value: uint32) : unit
   (+0 other overloads)
Console.WriteLine(value: int) : unit
   (+0 other overloads)
Console.WriteLine(value: float32) : unit
   (+0 other overloads)
Console.WriteLine(value: float) : unit
   (+0 other overloads)
Console.WriteLine(value: decimal) : unit
   (+0 other overloads)

type BitConverter =
  static val IsLittleEndian : bool
  static member DoubleToInt64Bits : value:float -> int64
  static member GetBytes : value:bool -> byte[] + 9 overloads
  static member Int64BitsToDouble : value:int64 -> float
  static member ToBoolean : value:byte[] * startIndex:int -> bool
  static member ToChar : value:byte[] * startIndex:int -> char
  static member ToDouble : value:byte[] * startIndex:int -> float
  static member ToInt16 : value:byte[] * startIndex:int -> int16
  static member ToInt32 : value:byte[] * startIndex:int -> int
  static member ToInt64 : value:byte[] * startIndex:int -> int64
  ...

Full name: System.BitConverter

BitConverter.ToString(value: byte []) : string
BitConverter.ToString(value: byte [], startIndex: int) : string
BitConverter.ToString(value: byte [], startIndex: int, length: int) : string

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More information

Link:	http://fssnip.net/g1
Posted:	12 years ago
Author:	greg zakharov
Tags:	crypto , scripting , hash