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Hashr/Controllers/ValuesController.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Routing;
+using System.Security.Cryptography;
+namespace Hashr.Controllers
+{
+    public class ValuesController : Controller
+    {        // POST api/values
+        [HttpPost]
+        [Route("hashme")]
+        public async Task<string> HashMe()
+        {
+            using(var memstream = new MemoryStream())
+            using(var sha = SHA256.Create())
+            {
+                await this.Request.Body.CopyToAsync(memstream);
+                return System.Text.Encoding.ASCII.GetString(sha.ComputeHash(memstream.ToArray()));
+            }
+        }
+    }
+}