diff --git a/libtommath_VS2005.vcproj b/libtommath_VS2005.vcproj
index 7162185..b977b4a 100644
--- a/libtommath_VS2005.vcproj
+++ b/libtommath_VS2005.vcproj
@@ -827,6 +827,28 @@
 				/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath="bn_mp_export.c"
+			>
+			<FileConfiguration
+				Name="Debug|Win32"
+				>
+				<Tool
+					Name="VCCLCompilerTool"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions=""
+				/>
+			</FileConfiguration>
+			<FileConfiguration
+				Name="Release|Win32"
+				>
+				<Tool
+					Name="VCCLCompilerTool"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions=""
+				/>
+			</FileConfiguration>
+		</File>
 		<File
 			RelativePath="bn_mp_expt_d.c"
 			>
@@ -1025,6 +1047,28 @@
 				/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath="bn_mp_import.c"
+			>
+			<FileConfiguration
+				Name="Debug|Win32"
+				>
+				<Tool
+					Name="VCCLCompilerTool"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions=""
+				/>
+			</FileConfiguration>
+			<FileConfiguration
+				Name="Release|Win32"
+				>
+				<Tool
+					Name="VCCLCompilerTool"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions=""
+				/>
+			</FileConfiguration>
+		</File>
 		<File
 			RelativePath="bn_mp_init.c"
 			>
diff --git a/libtommath_VS2008.vcproj b/libtommath_VS2008.vcproj
index 205aec1..34bf2ae 100644
--- a/libtommath_VS2008.vcproj
+++ b/libtommath_VS2008.vcproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="Windows-1252"?>
 <VisualStudioProject
 	ProjectType="Visual C++"
-	Version="9,00"
+	Version="9.00"
 	Name="libtommath"
 	ProjectGUID="{42109FEE-B0B9-4FCD-9E56-2863BF8C55D2}"
 	RootNamespace="libtommath"
@@ -829,6 +829,10 @@
 				/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath=".\bn_mp_export.c"
+			>
+		</File>
 		<File
 			RelativePath="bn_mp_expt_d.c"
 			>
@@ -1027,6 +1031,10 @@
 				/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath=".\bn_mp_import.c"
+			>
+		</File>
 		<File
 			RelativePath="bn_mp_init.c"
 			>
diff --git a/makefile b/makefile
index 66c3511..3ecb3be 100644
--- a/makefile
+++ b/makefile
@@ -93,7 +93,7 @@ bn_mp_fread.o bn_mp_fwrite.o bn_mp_cnt_lsb.o bn_error.o \
 bn_mp_init_multi.o bn_mp_clear_multi.o bn_mp_exteuclid.o bn_mp_toradix_n.o \
 bn_mp_prime_random_ex.o bn_mp_get_int.o bn_mp_sqrt.o bn_mp_is_square.o bn_mp_init_set.o \
 bn_mp_init_set_int.o bn_mp_invmod_slow.o bn_mp_prime_rabin_miller_trials.o \
-bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o
+bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o bn_mp_import.o bn_mp_export.o
 
 $(LIBNAME):  $(OBJECTS)
 	$(AR) $(ARFLAGS) $@ $(OBJECTS)
diff --git a/makefile.bcc b/makefile.bcc
index 67743d9..2854b5f 100644
--- a/makefile.bcc
+++ b/makefile.bcc
@@ -33,7 +33,7 @@ bn_mp_fread.obj bn_mp_fwrite.obj bn_mp_cnt_lsb.obj bn_error.obj \
 bn_mp_init_multi.obj bn_mp_clear_multi.obj bn_mp_exteuclid.obj bn_mp_toradix_n.obj \
 bn_mp_prime_random_ex.obj bn_mp_get_int.obj bn_mp_sqrt.obj bn_mp_is_square.obj \
 bn_mp_init_set.obj bn_mp_init_set_int.obj bn_mp_invmod_slow.obj bn_mp_prime_rabin_miller_trials.obj \
-bn_mp_to_signed_bin_n.obj bn_mp_to_unsigned_bin_n.obj
+bn_mp_to_signed_bin_n.obj bn_mp_to_unsigned_bin_n.obj bn_mp_import.obj bn_mp_export.obj
 
 TARGET = libtommath.lib
 
diff --git a/makefile.cygwin_dll b/makefile.cygwin_dll
index 85a9b20..a0f1950 100644
--- a/makefile.cygwin_dll
+++ b/makefile.cygwin_dll
@@ -38,7 +38,7 @@ bn_mp_fread.o bn_mp_fwrite.o bn_mp_cnt_lsb.o bn_error.o \
 bn_mp_init_multi.o bn_mp_clear_multi.o bn_mp_exteuclid.o bn_mp_toradix_n.o \
 bn_mp_prime_random_ex.o bn_mp_get_int.o bn_mp_sqrt.o bn_mp_is_square.o bn_mp_init_set.o \
 bn_mp_init_set_int.o bn_mp_invmod_slow.o bn_mp_prime_rabin_miller_trials.o \
-bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o
+bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o bn_mp_import.o bn_mp_export.o
 
 # make a Windows DLL via Cygwin
 windll:  $(OBJECTS)
diff --git a/makefile.icc b/makefile.icc
index cf70ab0..3fd3385 100644
--- a/makefile.icc
+++ b/makefile.icc
@@ -65,7 +65,7 @@ bn_mp_fread.o bn_mp_fwrite.o bn_mp_cnt_lsb.o bn_error.o \
 bn_mp_init_multi.o bn_mp_clear_multi.o bn_mp_exteuclid.o bn_mp_toradix_n.o \
 bn_mp_prime_random_ex.o bn_mp_get_int.o bn_mp_sqrt.o bn_mp_is_square.o bn_mp_init_set.o \
 bn_mp_init_set_int.o bn_mp_invmod_slow.o bn_mp_prime_rabin_miller_trials.o \
-bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o
+bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o bn_mp_import.o bn_mp_export.o
 
 libtommath.a:  $(OBJECTS)
 	$(AR) $(ARFLAGS) libtommath.a $(OBJECTS)
diff --git a/makefile.msvc b/makefile.msvc
index 5edebec..ee81c79 100644
--- a/makefile.msvc
+++ b/makefile.msvc
@@ -32,7 +32,7 @@ bn_mp_fread.obj bn_mp_fwrite.obj bn_mp_cnt_lsb.obj bn_error.obj \
 bn_mp_init_multi.obj bn_mp_clear_multi.obj bn_mp_exteuclid.obj bn_mp_toradix_n.obj \
 bn_mp_prime_random_ex.obj bn_mp_get_int.obj bn_mp_sqrt.obj bn_mp_is_square.obj \
 bn_mp_init_set.obj bn_mp_init_set_int.obj bn_mp_invmod_slow.obj bn_mp_prime_rabin_miller_trials.obj \
-bn_mp_to_signed_bin_n.obj bn_mp_to_unsigned_bin_n.obj
+bn_mp_to_signed_bin_n.obj bn_mp_to_unsigned_bin_n.obj bn_mp_import.obj bn_mp_export.obj
 
 HEADERS=tommath.h tommath_class.h tommath_superclass.h
 
diff --git a/makefile.shared b/makefile.shared
index 1611dba..e7db797 100644
--- a/makefile.shared
+++ b/makefile.shared
@@ -79,7 +79,7 @@ bn_mp_fread.o bn_mp_fwrite.o bn_mp_cnt_lsb.o bn_error.o \
 bn_mp_init_multi.o bn_mp_clear_multi.o bn_mp_exteuclid.o bn_mp_toradix_n.o \
 bn_mp_prime_random_ex.o bn_mp_get_int.o bn_mp_sqrt.o bn_mp_is_square.o bn_mp_init_set.o \
 bn_mp_init_set_int.o bn_mp_invmod_slow.o bn_mp_prime_rabin_miller_trials.o \
-bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o
+bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin_n.o bn_mp_import.o bn_mp_export.o
 
 objs: $(OBJECTS)