From f7307935fb087f8c327c8d8f09f8837925e70c34 Mon Sep 17 00:00:00 2001
From: Erwin Nindl <nine@wirdorange.org>
Date: Tue, 11 Dec 2007 17:47:29 +0000
Subject: set iv to fixed length of 16byte in kd

---
 mpi.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'mpi.cpp')

diff --git a/mpi.cpp b/mpi.cpp
index b8a4b6c..6a94f3e 100644
--- a/mpi.cpp
+++ b/mpi.cpp
@@ -127,14 +127,17 @@ void Mpi::clearHighBit(u_int32_t n)
   gcry_mpi_clear_highbit( val_, n );
 }
 
-Buffer Mpi::getBuf() const
+Buffer Mpi::getBuf(u_int32_t min_len) const
 {
   u_int32_t len = 0, written = 0;
   len = gcry_mpi_get_nbits( val_ );
 
   Buffer res(static_cast<u_int32_t>(len/8)+1);
 
-  gcry_mpi_print( GCRYMPI_FMT_STD, res, len, &written, val_ );
+  if(res.getLength() < min_len)
+    res.resizeBack(min_len);
+
+  gcry_mpi_print( GCRYMPI_FMT_STD, res, res.getLength(), &written, val_ );
   return res;
 }
 
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