hc_128-add-keystream-bytes.patch

--- a/hc-128.c	2007-01-16 23:05:58.000000000 +1300
+++ b/hc-128.c	2011-04-21 23:21:01.253100990 +1200
@@ -295,3 +295,21 @@
   }
 
 }
+
+void ECRYPT_keystream_bytes(
+  ECRYPT_ctx* ctx, 
+  u8* output, 
+  u32 msglen)                /* Message length in bytes. */ 
+{
+  for ( ; msglen >= 64; msglen -= 64, output += 64){
+      generate_keystream(ctx, (u32*)output);
+  }
+
+  if (msglen > 0){
+    u32 i;
+    u32 keystream[16];
+    generate_keystream(ctx, keystream); 
+    for (i = 0; i < msglen; i ++)
+	output[i] = ((u8*)keystream)[i];
+  }
+}