From 8e729a36b30c3becfbfe424748650802b225cd8f Mon Sep 17 00:00:00 2001
From: elie <elie>
Date: Fri, 5 Jun 2015 16:35:05 +0000
Subject: prohibit indefinite length DER encoding

---
 pyasn1/codec/der/encoder.py | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'pyasn1')

diff --git a/pyasn1/codec/der/encoder.py b/pyasn1/codec/der/encoder.py
index 2044df3..7f55eeb 100644
--- a/pyasn1/codec/der/encoder.py
+++ b/pyasn1/codec/der/encoder.py
@@ -1,6 +1,7 @@
 # DER encoder
 from pyasn1.type import univ
 from pyasn1.codec.cer import encoder
+from pyasn1 import error
 
 class SetOfEncoder(encoder.SetOfEncoder):
     def _cmpSetComponents(self, c1, c2):
@@ -24,6 +25,8 @@ typeMap = encoder.typeMap
 class Encoder(encoder.Encoder):
     supportIndefLength = False
     def __call__(self, client, defMode=True, maxChunkSize=0):
+        if not defMode:
+            raise error.PyAsn1Error('DER forbids indefinite length mode')
         return encoder.Encoder.__call__(self, client, defMode, maxChunkSize)
 
 encode = Encoder(tagMap, typeMap)
-- 
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