From d195d8695198af293a01d24cfb1f365c15d7bc49 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Gr=C3=A9gory=20Burri?= <gregory.burri@matisa.ch>
Date: Wed, 7 Aug 2019 14:17:23 +0200
Subject: [PATCH] Remove old F# implementation.

---
 WebSharper/.gitignore |  3 --
 WebSharper/Crypto.fs  | 79 -------------------------------------------
 2 files changed, 82 deletions(-)
 delete mode 100644 WebSharper/.gitignore
 delete mode 100644 WebSharper/Crypto.fs

diff --git a/WebSharper/.gitignore b/WebSharper/.gitignore
deleted file mode 100644
index 66fa12c..0000000
--- a/WebSharper/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-bin/
-obj/
-wwwroot/
\ No newline at end of file
diff --git a/WebSharper/Crypto.fs b/WebSharper/Crypto.fs
deleted file mode 100644
index f85825f..0000000
--- a/WebSharper/Crypto.fs
+++ /dev/null
@@ -1,79 +0,0 @@
-module RUP.Crypto
-
-open System
-open System.Net
-open System.IO
-open System.Security.Cryptography
-open System.Text
-open System.Web
-
-let keySize = 128 // [bit].
-
-type Key = string
-
-let randBytes (nb : int) : byte array =
-    let result = Array.zeroCreate nb
-    use generator = new RNGCryptoServiceProvider ()
-    generator.GetBytes result
-    result
-
-let generateKey () : Key =
-    let bytes = randBytes (keySize / 8)
-    Convert.ToBase64String bytes |> WebUtility.UrlEncode
-
-// TODO: return a Result<string, EncryptError>
-let encrypt (key : Key) (name : string) : string =
-    let keyAsBytes = WebUtility.UrlDecode key |> Convert.FromBase64String
-    let iv = randBytes (keySize / 8)
-
-    use aes = new AesCryptoServiceProvider (KeySize = keySize) // Default mode is CBC.
-    use stream = new MemoryStream ()
-    use cryptoStream = new CryptoStream (stream, aes.CreateEncryptor (keyAsBytes, iv), CryptoStreamMode.Write)
-    let nameAsBytes = Encoding.UTF8.GetBytes name
-
-    use sha = SHA256.Create ()
-    let hash = sha.ComputeHash nameAsBytes
-
-    cryptoStream.Write (nameAsBytes, 0, nameAsBytes.Length)
-    cryptoStream.FlushFinalBlock ()
-    stream.Position <- 0L
-
-    let result = Array.zeroCreate (iv.Length + hash.Length + int stream.Length)
-
-    Array.blit iv 0 result 0 iv.Length
-    Array.blit hash 0 result iv.Length hash.Length
-
-    stream.Read (result, iv.Length + hash.Length, int stream.Length) |> ignore
-    "1" + Convert.ToBase64String result |> WebUtility.UrlEncode
-
-// TODO: return a Result<string, DecryptError>
-let decrypt (key : Key) (cipher : string) (urlDecode : bool) : string =
-    let version = cipher.Substring (0, 1) |> int
-    if version <> 1 then
-        failwithf "Version not supported: %i" version
-
-    let keyAsBytes = WebUtility.UrlDecode key |> Convert.FromBase64String
-    let bytes = cipher.Substring 1 |> (if urlDecode then WebUtility.UrlDecode else id) |> Convert.FromBase64String
-
-    let iv = Array.zeroCreate (keySize / 8)
-    Array.blit bytes 0 iv 0 iv.Length
-
-    let hash = Array.zeroCreate 32
-    Array.blit bytes iv.Length hash 0 hash.Length
-
-    use aes = new AesCryptoServiceProvider (KeySize = keySize)
-    use stream = new MemoryStream (bytes, iv.Length + hash.Length, bytes.Length - iv.Length - hash.Length)
-    use cryptoStream = new CryptoStream (stream, aes.CreateDecryptor (keyAsBytes, iv), CryptoStreamMode.Read)
-    use streamResult = new MemoryStream ()
-    cryptoStream.CopyTo streamResult
-    streamResult.Position <- 0L
-    let result = Array.zeroCreate (int streamResult.Length)
-    streamResult.Read (result, 0, result.Length) |> ignore
-
-    use sha = SHA256.Create ()
-    let computedHash = sha.ComputeHash result
-
-    if hash <> computedHash then
-        failwith "hash mismatch"
-
-    Encoding.UTF8.GetString result
\ No newline at end of file
-- 
2.43.0