diff --git a/sc/source/filter/oox/biffcodec.cxx b/sc/source/filter/oox/biffcodec.cxx
index 26fee95c5849..c0f149814ae5 100644
--- a/sc/source/filter/oox/biffcodec.cxx
+++ b/sc/source/filter/oox/biffcodec.cxx
@@ -257,91 +257,6 @@ void BiffDecoder_RCF::implDecode( sal_uInt8* pnDestData, const sal_uInt8* pnSrcD
     }
 }
 
-// ============================================================================
-
-namespace {
-
-const sal_uInt16 BIFF_FILEPASS_XOR                  = 0;
-const sal_uInt16 BIFF_FILEPASS_RCF                  = 1;
-
-const sal_uInt16 BIFF_FILEPASS_BIFF8_RCF            = 1;
-const sal_uInt16 BIFF_FILEPASS_BIFF8_CRYPTOAPI_2003 = 2;
-const sal_uInt16 BIFF_FILEPASS_BIFF8_CRYPTOAPI_2007 = 3;
-
-// ----------------------------------------------------------------------------
-
-BiffDecoderRef lclReadFilePass_XOR( BiffInputStream& rStrm )
-{
-    BiffDecoderRef xDecoder;
-    OSL_ENSURE( rStrm.getRemaining() == 4, "lclReadFilePass_XOR - wrong record size" );
-    if( rStrm.getRemaining() == 4 )
-    {
-        sal_uInt16 nBaseKey, nHash;
-        rStrm >> nBaseKey >> nHash;
-        xDecoder.reset( new BiffDecoder_XOR( nBaseKey, nHash ) );
-    }
-    return xDecoder;
-}
-
-BiffDecoderRef lclReadFilePass_RCF( BiffInputStream& rStrm )
-{
-    BiffDecoderRef xDecoder;
-    OSL_ENSURE( rStrm.getRemaining() == 48, "lclReadFilePass_RCF - wrong record size" );
-    if( rStrm.getRemaining() == 48 )
-    {
-        sal_uInt8 pnSalt[ 16 ];
-        sal_uInt8 pnVerifier[ 16 ];
-        sal_uInt8 pnVerifierHash[ 16 ];
-        rStrm.readMemory( pnSalt, 16 );
-        rStrm.readMemory( pnVerifier, 16 );
-        rStrm.readMemory( pnVerifierHash, 16 );
-        xDecoder.reset( new BiffDecoder_RCF( pnSalt, pnVerifier, pnVerifierHash ) );
-    }
-    return xDecoder;
-}
-
-BiffDecoderRef lclReadFilePass_CryptoApi( BiffInputStream& /*rStrm*/ )
-{
-    // not supported
-    return BiffDecoderRef();
-}
-
-BiffDecoderRef lclReadFilePassBiff8( BiffInputStream& rStrm )
-{
-    BiffDecoderRef xDecoder;
-    switch( rStrm.readuInt16() )
-    {
-        case BIFF_FILEPASS_XOR:
-            xDecoder = lclReadFilePass_XOR( rStrm );
-        break;
-
-        case BIFF_FILEPASS_RCF:
-        {
-            sal_uInt16 nMajor = rStrm.readuInt16();
-            rStrm.skip( 2 );
-            switch( nMajor )
-            {
-                case BIFF_FILEPASS_BIFF8_RCF:
-                    xDecoder = lclReadFilePass_RCF( rStrm );
-                break;
-                case BIFF_FILEPASS_BIFF8_CRYPTOAPI_2003:
-                case BIFF_FILEPASS_BIFF8_CRYPTOAPI_2007:
-                    xDecoder = lclReadFilePass_CryptoApi( rStrm );
-                break;
-                default:
-                    OSL_FAIL( "lclReadFilePassBiff8 - unknown BIFF8 encryption sub mode" );
-            }
-        }
-        break;
-
-        default:
-            OSL_FAIL( "lclReadFilePassBiff8 - unknown encryption mode" );
-    }
-    return xDecoder;
-}
-
-} // namespace
-
 // ----------------------------------------------------------------------------
 
 BiffCodecHelper::BiffCodecHelper( const WorkbookHelper& rHelper ) :