diff --git a/facho/cli.py b/facho/cli.py
index b32c085..ca52d4d 100644
--- a/facho/cli.py
+++ b/facho/cli.py
@@ -213,13 +213,17 @@ def validate_invoice(invoice_path):
 @click.option('--private-key', type=click.Path(exists=True))
 @click.option('--passphrase')
 @click.option('--ssl/--no-ssl', default=False)
+@click.option('--use-cache-policy/--no-use-cache-policy', default=False)
 @click.argument('xmlfile', type=click.Path(exists=True), required=True)
-def sign_xml(private_key, passphrase, xmlfile, ssl=True):
+def sign_xml(private_key, passphrase, xmlfile, ssl=True, use_cache_policy=False):
     if not ssl:
         disable_ssl()
         
     from facho import fe
-    signer = fe.DianXMLExtensionSigner(private_key, passphrase=passphrase)
+    if use_cache_policy:
+        warnings.warn("xades using cache policy")
+    print(use_cache_policy)
+    signer = fe.DianXMLExtensionSigner(private_key, passphrase=passphrase, mockpolicy=use_cache_policy)
     document = open(xmlfile, 'r').read().encode('utf-8')
     print(signer.sign_xml_string(document))
         
@@ -229,8 +233,9 @@ def sign_xml(private_key, passphrase, xmlfile, ssl=True):
 @click.option('--passphrase')
 @click.option('--ssl/--no-ssl', default=False)
 @click.option('--sign/--no-sign', default=False)
+@click.option('--use-cache-policy/--no-use-cache-policy', default=False)
 @click.argument('scriptname', type=click.Path(exists=True), required=True)
-def generate_invoice(private_key, passphrase, scriptname, generate=False, ssl=True, sign=False):
+def generate_invoice(private_key, passphrase, scriptname, generate=False, ssl=True, sign=False, use_cache_policy=False):
     """
     imprime xml en pantalla.
     SCRIPTNAME espera 
@@ -265,7 +270,7 @@ def generate_invoice(private_key, passphrase, scriptname, generate=False, ssl=Tr
             xml.add_extension(extension)
 
         if sign:
-            signer = fe.DianXMLExtensionSigner(private_key, passphrase=passphrase)
+            signer = fe.DianXMLExtensionSigner(private_key, passphrase=passphrase, mockpolicy=use_cache_policy)
             xml.add_extension(signer)
             
         print(xml.tostring(xml_declaration=True))
diff --git a/facho/fe/data/dian/politicadefirmav2.pdf b/facho/fe/data/dian/politicadefirmav2.pdf
new file mode 100644
index 0000000..b9bf696
Binary files /dev/null and b/facho/fe/data/dian/politicadefirmav2.pdf differ
diff --git a/facho/fe/fe.py b/facho/fe/fe.py
index fa5166a..39c6625 100644
--- a/facho/fe/fe.py
+++ b/facho/fe/fe.py
@@ -181,9 +181,10 @@ class DianXMLExtensionSigner(FachoXMLExtension):
     POLICY_ID = 'https://facturaelectronica.dian.gov.co/politicadefirma/v2/politicadefirmav2.pdf'
     POLICY_NAME = u'Política de firma para facturas electrónicas de la República de Colombia.'
     
-    def __init__(self, pkcs12_path, passphrase=None):
+    def __init__(self, pkcs12_path, passphrase=None, mockpolicy=False):
         self._pkcs12_path = pkcs12_path
         self._passphrase = None
+        self._mockpolicy = mockpolicy
         if passphrase:
             self._passphrase = passphrase.encode('utf-8')
 
@@ -216,7 +217,7 @@ class DianXMLExtensionSigner(FachoXMLExtension):
         )
         xmlsig.template.add_transform(ref, xmlsig.constants.TransformEnveloped)
 
-        id_keyinfo = "%s-KeyInfo" % (id_uuid)
+        id_keyinfo = "xmldsig-%s-KeyInfo" % (id_uuid)
         xmlsig.template.add_reference(
             signature, xmlsig.constants.TransformSha256, uri="#%s" % (id_keyinfo),
         )
@@ -255,8 +256,24 @@ class DianXMLExtensionSigner(FachoXMLExtension):
         ctx.load_pkcs12(OpenSSL.crypto.load_pkcs12(open(self._pkcs12_path, 'rb').read(),
                                                    self._passphrase))
 
-        ctx.sign(signature)
-        ctx.verify(signature)
+        if self._mockpolicy:
+            from mock import patch
+            import os.path
+            with patch('xades.policy.urllib.urlopen') as mock:
+                class UrllibPolicyMock:
+                    def read(self):
+                        cur_dir = os.path.dirname(os.path.abspath(__file__))
+                        data_dir = os.path.join(cur_dir, 'data', 'dian')
+                        policy_file = os.path.join(data_dir, 'politicadefirmav2.pdf')
+                        with open(policy_file, 'rb') as f:
+                            return f.read()
+                            
+                mock.return_value = UrllibPolicyMock()
+                ctx.sign(signature)
+                ctx.verify(signature)
+        else:
+            ctx.sign(signature)
+            ctx.verify(signature)
         #xmlsig take parent root
         xml.remove(signature)
         return signature
diff --git a/setup.py b/setup.py
index a5b6098..317b478 100644
--- a/setup.py
+++ b/setup.py
@@ -18,6 +18,7 @@ requirements = ['Click>=6.0',
                 'pyOpenSSL>=19.1.0',
                 'xmlsig>=0.1.3',
                 'xades>=0.2.1',
+                'mock==2.0.0',
                 'xmlsec>=1.3.8']
 
 setup_requirements = ['pytest-runner', ]
@@ -52,7 +53,7 @@ setup(
     include_package_data=True,
     package_data = {
         # If any package contains *.txt or *.rst files, include them:
-        '': ['*.gc', '*.xsd']
+        '': ['*.gc', '*.xsd', 'politicadefirmav2.pdf']
     },
     keywords='facho',
     name='facho',