diff --git a/charon/cmd/cmd_sign.py b/charon/cmd/cmd_sign.py
index 9578183e..629281cb 100644
--- a/charon/cmd/cmd_sign.py
+++ b/charon/cmd/cmd_sign.py
@@ -15,7 +15,8 @@
 """
 from typing import List
 
-from charon.config import get_config, RadasConfig
+from charon.config import get_config
+from charon.pkgs.radas_signature_handler import sign_in_radas
 from charon.cmd.internal import (
     _decide_mode, _safe_delete
 )
@@ -126,23 +127,22 @@ def sign(
         if not radas_conf or not radas_conf.validate():
             logger.error("The configuration for radas is not valid!")
             sys.exit(1)
-        sign_in_radas(repo_url, requester, sign_key, result_path, radas_conf)
+        # All ignore files in global config should also be ignored in signing.
+        ig_patterns = conf.get_ignore_patterns()
+        if ignore_patterns:
+            ig_patterns.extend(ignore_patterns)
+        args = {
+            "repo_url": repo_url,
+            "requester": requester,
+            "sign_key": sign_key,
+            "result_path": result_path,
+            "ignore_patterns": ig_patterns,
+            "radas_config": radas_conf
+        }
+        sign_in_radas(**args)  # type: ignore
     except Exception:
         print(traceback.format_exc())
-        sys.exit(2)  # distinguish between exception and bad config or bad state
+        sys.exit(2)
     finally:
         if not debug and tmp_dir:
             _safe_delete(tmp_dir)
-
-
-def sign_in_radas(repo_url: str,
-                  requester: str,
-                  sign_key: str,
-                  result_path: str,
-                  radas_config: RadasConfig):
-    '''This function will be responsible to do the overall controlling of the whole process,
-    like trigger the send and register the receiver, and control the wait and timeout there.
-    '''
-    logger.debug("params. repo_url: %s, requester: %s, sign_key: %s, result_path: %s,"
-                 "radas_config: %s", repo_url, requester, sign_key, result_path, radas_config)
-    logger.info("Not implemented yet!")
diff --git a/charon/config.py b/charon/config.py
index 2995ffdf..44bc9c77 100644
--- a/charon/config.py
+++ b/charon/config.py
@@ -126,10 +126,12 @@ def __init__(self, data: Dict):
         self.__ignore_signature_suffix: Dict = data.get("ignore_signature_suffix", None)
         self.__signature_command: str = data.get("detach_signature_command", None)
         self.__aws_cf_enable: bool = data.get("aws_cf_enable", False)
-        self.__radas_config__: Optional[RadasConfig] = None
         radas_config: Dict = data.get("radas", None)
         if radas_config:
-            self.__radas_config__ = RadasConfig(radas_config)
+            self.__radas_config = RadasConfig(radas_config)
+            self.__radas_enabled = bool(self.__radas_config and self.__radas_config.validate())
+        else:
+            self.__radas_enabled = False
 
     def get_ignore_patterns(self) -> List[str]:
         return self.__ignore_patterns
@@ -159,10 +161,10 @@ def is_aws_cf_enable(self) -> bool:
         return self.__aws_cf_enable
 
     def is_radas_enabled(self) -> bool:
-        return bool(self.__radas_config__ and self.__radas_config__.validate())
+        return self.__radas_enabled
 
-    def get_radas_config(self) -> Optional[RadasConfig]:
-        return self.__radas_config__
+    def get_radas_config(self) -> RadasConfig:
+        return self.__radas_config
 
 
 def get_config(cfgPath=None) -> CharonConfig:
diff --git a/charon/pkgs/radas_signature_handler.py b/charon/pkgs/radas_signature_handler.py
index c04f0bbf..46794f49 100644
--- a/charon/pkgs/radas_signature_handler.py
+++ b/charon/pkgs/radas_signature_handler.py
@@ -20,7 +20,7 @@
 import asyncio
 import sys
 from typing import List, Any, Tuple, Callable, Dict
-from charon.config import get_config
+from charon.config import get_config, RadasConfig
 from charon.pkgs.oras_client import OrasClient
 from proton import Event
 from proton.handlers import MessagingHandler
@@ -28,9 +28,10 @@
 logger = logging.getLogger(__name__)
 
 
-class UmbListener(MessagingHandler):
+class RadasReceiver(MessagingHandler):
     """
-    UmbListener class (AMQP version), register this when setup UmbClient
+    This receiver will listen to UMB message queue to receive signing message for
+    signing result.
     Attributes:
         sign_result_loc (str): Local save path (e.g. “/tmp/sign”) for oras pull result,
         this value transfers from the cmd flag, should register UmbListener when the client starts
@@ -179,3 +180,12 @@ def __do_path_cut_and(
     loop = asyncio.get_event_loop()
     loop.run_until_complete(asyncio.gather(*tasks))
     return (failed_paths, generated_signs)
+
+
+def sign_in_radas(repo_url: str,
+                  requester: str,
+                  sign_key: str,
+                  result_path: str,
+                  ignore_patterns: List[str],
+                  radas_config: RadasConfig):
+    logger.info("Start signing for %s", repo_url)