Handle large string values with SHA256 in JWT tokens (#1237)

https://github.com/genexuslabs/DotNetClasses/pull/1157/files

Co-authored-by: claudiamurialdo <c.murialdo@globant.com>
(cherry picked from commit c42cfa2)

Author: claudiamurialdo

dotnet/src/dotnetframework/GxClasses/Middleware/GXHttp.cs

@@ -1794,7 +1794,7 @@ protected string GetSecureSignedToken(String cmpCtx, GxUserType Value, IGxContex
 
 		protected string GetSecureSignedToken(string cmpCtx, string value, IGxContext context)
 		{
-			return WebSecurityHelper.Sign(PgmInstanceId(cmpCtx), string.Empty, value, SecureTokenHelper.SecurityMode.Sign, context);
+			return GetSecureSignedHashedToken(cmpCtx, SecureTokenHelper.GetTokenValue(value), context);
 		}
 		private string GetSecureSignedHashedToken(string cmpCtx, TokenValue tokenValue, IGxContext context)
 		{

dotnet/src/dotnetframework/GxClasses/Security/WebSecurity.cs

@@ -55,9 +55,17 @@ private static string GetSecretKey(IGxContext context)
         }
 
         public static bool Verify(string pgmName, string issuer, string value, string jwtToken, IGxContext context)
-        {
-            WebSecureToken token;
-            return WebSecurityHelper.Verify(pgmName, issuer, value, jwtToken, out token, context);
+		{
+			WebSecureToken token;
+			WebSecureToken jwtTokenObj = SecureTokenHelper.getWebSecureToken(jwtToken, GetSecretKey(context));
+			if (jwtTokenObj != null && jwtTokenObj.ValueType == ValueTypeHash)
+			{
+				return Verify(pgmName, issuer, GetHash(value), jwtToken, out token, context);
+			}
+			else
+			{
+				return Verify(pgmName, issuer, value, jwtToken, out token, context);
+			}
         }
 		public static bool Verify(string pgmName, string issuer, string value, string jwtToken, out WebSecureToken token, IGxContext context)
 		{
@@ -251,20 +259,22 @@ internal static bool Verify(string jwtToken, WebSecureToken outToken, string sec
 		}
 		internal static TokenValue GetTokenValue(IGxJSONSerializable obj)
 		{
-	
-			string jsonString = obj.ToJSonString();
+			return GetTokenValue(obj.ToJSonString());
+		}
+		internal static TokenValue GetTokenValue(string value)
+		{
 
-			if (jsonString.Length > MaxTokenValueLength)
+			if (value!=null && value.Length > MaxTokenValueLength)
 			{
-				string hash = GetHash(jsonString);
+				string hash = GetHash(value);
 				GXLogging.Debug(_log, $"GetTokenValue: TokenValue is too long, using hash: {hash} instead of original value.");
-				GXLogging.Debug(_log, $"Server TokenOriginalValue:" + jsonString);
+				GXLogging.Debug(_log, $"Server TokenOriginalValue:" + value);
 				return new TokenValue() { Value = hash, ValueType = ValueTypeHash };
 			}
 			else
 			{
-				GXLogging.Debug(_log, $"GetTokenValue:" + jsonString);
-				return new TokenValue() { Value = jsonString };
+				GXLogging.Debug(_log, $"GetTokenValue:" + value);
+				return new TokenValue() { Value = value };
 			}
 		}
 		internal static string GetHash(string jsonString)