1 files changed, 13 insertions, 3 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/encodings/PKCS1Encoding.java b/bcprov/src/main/java/org/bouncycastle/crypto/encodings/PKCS1Encoding.java
index 8bcfe26..d8ec62b 100644
--- a/bcprov/src/main/java/org/bouncycastle/crypto/encodings/PKCS1Encoding.java
+++ b/bcprov/src/main/java/org/bouncycastle/crypto/encodings/PKCS1Encoding.java
@@ -201,10 +201,20 @@ public class PKCS1Encoding
         }
 
         byte type = block[0];
-        
-        if (type != 1 && type != 2)
+
+        if (forPrivateKey)
+        {
+            if (type != 2)
+            {
+                throw new InvalidCipherTextException("unknown block type");
+            }
+        }
+        else
         {
-            throw new InvalidCipherTextException("unknown block type");
+            if (type != 1)
+            {
+                throw new InvalidCipherTextException("unknown block type");
+            }
         }
         // BEGIN android-added
         if ((type == 1 && forPrivateKey) || (type == 2 && !forPrivateKey))