X-Git-Url: http://git.euphorik.ch/?p=crypto_lab2.git;a=blobdiff_plain;f=labo2-fsharp%2FCryptoFile%2FCrypto.fs;fp=labo2-fsharp%2FCryptoFile%2FCrypto.fs;h=e74409d53d53daa9f347b3b89e0200907213165f;hp=31d6475c1f488362244dfa52ce8bde516a030cfa;hb=95f772ef77baee15929c1feccc4de4c9a795f81d;hpb=0126bf5a082b8e37ad1dc5f7686802146269ae97

diff --git a/labo2-fsharp/CryptoFile/Crypto.fs b/labo2-fsharp/CryptoFile/Crypto.fs
index 31d6475..e74409d 100644
--- a/labo2-fsharp/CryptoFile/Crypto.fs
+++ b/labo2-fsharp/CryptoFile/Crypto.fs
@@ -17,7 +17,7 @@ module internal Crypto =
     /// Returns a cryptographically strong sequence of bytes.
     let rand size : byte[] =
         let result = Array.zeroCreate size
-        let generator = new RNGCryptoServiceProvider ()
+        use generator = new RNGCryptoServiceProvider ()
         generator.GetBytes result
         result
 
@@ -70,5 +70,5 @@ module internal Crypto =
 
     let ComputeHMAC (key: byte[]) (inputStream: Stream) : byte[] =
         if key.Length <> 32 then raise KeySizeError
-        let hmac = new HMACSHA256 (key)
+        use hmac = new HMACSHA256 (key)
         hmac.ComputeHash inputStream
\ No newline at end of file