diff --git a/npa/configure.ac b/npa/configure.ac
index 51b100e..3d89a86 100644
--- a/npa/configure.ac
+++ b/npa/configure.ac
@@ -34,12 +34,23 @@ AC_PATH_PROG(GENGETOPT, doxygen, false // No gengetopt //)
 # If you need to see the details, just run make V=1.
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
 
+
 # Checks for libraries.
 PKG_CHECK_EXISTS([libopensc],
                  [PKG_CHECK_MODULES([OPENSC], [libopensc >= 0.12.1 ])],
                  [AC_MSG_WARN([libopensc >= 0.12.1 not found by pkg-config])])
 test -z "$OPENSC_LIBS" && OPENSC_LIBS="-lopensc"
 
+saved_LIBS="$LIBS"
+LIBS="$LDFLAGS $OPENSC_LIBS"
+
+AC_MSG_CHECKING([for sc_perform_pace])
+AC_TRY_LINK_FUNC(sc_perform_pace, [ AC_MSG_RESULT([yes]) ],
+        [ AC_MSG_ERROR([libopensc with PACE (git clone git://github.com/frankmorgner/OpenSC.git) not found, use ./configure OPENSC_LIBS=...]) ])
+
+LIBS="$saved_LIBS"
+
+
 PKG_CHECK_EXISTS([libcrypto],
                  [PKG_CHECK_MODULES([OPENSSL], [libcrypto])],
                  [AC_MSG_WARN([libcrypto not found by pkg-config])])
@@ -47,23 +58,32 @@ PKG_CHECK_EXISTS([libcrypto],
 saved_CPPFLAGS="$CPPFLAGS"
 saved_LIBS="$LIBS"
 CPPFLAGS="$CPPFLAGS $OPENSSL_CFLAGS"
-LIBS="$LDFLAGS $OPENSC_LIBS $OPENSSL_LIBS"
-AC_MSG_CHECKING([for sc_perform_pace])
-AC_TRY_LINK_FUNC(sc_perform_pace, [ AC_MSG_RESULT([yes]) ],
-        [ AC_MSG_ERROR([libopensc with PACE (git clone git://github.com/frankmorgner/OpenSC.git) not found, use ./configure OPENSC_LIBS=...]) ])
+LIBS="$LDFLAGS $OPENSSL_LIBS"
 
 AC_CHECK_HEADERS(openssl/evp.h, [], [ AC_MSG_ERROR([openssl/evp.h not found, install OpenSSL or use ./configure OPENSSL_CFLAGS=...]) ])
 AC_MSG_CHECKING([for EVP_read_pw_string_min])
 AC_TRY_LINK_FUNC(EVP_read_pw_string_min, [ AC_MSG_RESULT([yes]) ], [ AC_MSG_ERROR([OpenSSL not found, use ./configure OPENSSL_LIBS=...]) ])
 
-AC_CHECK_HEADERS(openssl/eac.h, [], [ AC_MSG_ERROR([openssl/eac.h not found, install OpenPACE or use ./configure OPENSSL_CFLAGS=...]) ])
+CPPFLAGS="$saved_CPPFLAGS"
+LIBS="$saved_LIBS"
+
+
+PKG_CHECK_EXISTS([libeac],
+                 [PKG_CHECK_MODULES([OPENPACE], [libeac])],
+                 [AC_MSG_WARN([libeac not found by pkg-config])])
+
+saved_CPPFLAGS="$CPPFLAGS"
+saved_LIBS="$LIBS"
+CPPFLAGS="$CPPFLAGS $OPENPACE_CFLAGS"
+LIBS="$LDFLAGS $OPENPACE_LIBS"
+
+AC_CHECK_HEADERS(eac/eac.h, [], [ AC_MSG_ERROR([eac/eac.h not found, install OpenPACE or use ./configure OPENSSL_CFLAGS=...]) ])
 AC_MSG_CHECKING([for EAC_CTX_init_pace])
-AC_TRY_LINK_FUNC(EAC_CTX_init_pace, [ AC_MSG_RESULT([yes]) ], [ AC_MSG_ERROR([OpenPACE not found, use ./configure OPENSSL_LIBS=...]) ])
+AC_TRY_LINK_FUNC(EAC_CTX_init_pace, [ AC_MSG_RESULT([yes]) ], [ AC_MSG_ERROR([OpenPACE not found, use ./configure OPENPACE_LIBS=...]) ])
 
 CPPFLAGS="$saved_CPPFLAGS"
 LIBS="$saved_LIBS"
 
-AC_DEFINE(BUERGERCLIENT_WORKAROUND, 1, [Always get EF.CardAccess, when connecting to a smart card. This is a workaround for the recent Buergerclient])
 
 
 # Checks for header files.
@@ -102,6 +122,8 @@ Libraries:            ${LIBS}
 OPENSC_LIBS:          ${OPENSC_LIBS}
 OPENSSL_CFLAGS:       ${OPENSSL_CFLAGS}
 OPENSSL_LIBS:         ${OPENSSL_LIBS}
+OPENPACE_CFLAGS:      ${OPENPACE_CFLAGS}
+OPENPACE_LIBS:        ${OPENPACE_LIBS}
 
 EOF
 
diff --git a/npa/libnpa.pc.in b/npa/libnpa.pc.in
index e9c828e..9ff6050 100644
--- a/npa/libnpa.pc.in
+++ b/npa/libnpa.pc.in
@@ -6,6 +6,6 @@ includedir=@includedir@
 Name: lib@PACKAGE_NAME@
 Description: Library for the new German ID card (neuer Personalausweis, nPA)
 Version: @VERSION@
-Requires: libcrypto
+Requires: libeac
 Libs: -L${libdir} -lnpa @OPENSC_LIBS@
 Cflags: -I${includedir}
diff --git a/npa/src/Makefile.am b/npa/src/Makefile.am
index 0828bb0..c8de471 100644
--- a/npa/src/Makefile.am
+++ b/npa/src/Makefile.am
@@ -17,17 +17,17 @@ dist_man1_MANS		= npa-tool.1
 AM_CPPFLAGS = -I$(top_srcdir)/src/npa -I$(top_srcdir)/src/opensc/src
 
 libnpa_la_SOURCES = sm.c scutil.c npa.c sslutil.c
-libnpa_la_LIBADD = $(OPENSSL_LIBS) $(OPENSC_LIBS)
-libnpa_la_CFLAGS = $(OPENSSL_CFLAGS)
+libnpa_la_LIBADD = $(OPENSSL_LIBS) $(OPENPACE_LIBS) $(OPENSC_LIBS)
+libnpa_la_CFLAGS = $(OPENSSL_CFLAGS) $(OPENPACE_CFLAGS)
 libnpa_la_LDFLAGS = -no-undefined
 
 npa_tool_SOURCES = npa-tool.c $(BUILT_SOURCES)
-npa_tool_LDADD = $(OPENSSL_LIBS) $(OPENSC_LIBS) libnpa.la
-npa_tool_CFLAGS = $(OPENSSL_CFLAGS)
+npa_tool_LDADD = $(OPENSSL_LIBS) $(OPENPACE_LIBS) $(OPENSC_LIBS) libnpa.la
+npa_tool_CFLAGS = $(OPENSSL_CFLAGS) $(OPENPACE_CFLAGS)
 
 example_SOURCES = example.c
-example_LDADD = $(OPENSSL_LIBS) $(OPENSC_LIBS) libnpa.la
-example_CFLAGS = $(OPENSSL_CFLAGS)
+example_LDADD = $(OPENSSL_LIBS) $(OPENPACE_LIBS) $(OPENSC_LIBS) libnpa.la
+example_CFLAGS = $(OPENSSL_CFLAGS) $(OPENPACE_CFLAGS)
 
 
 npa-tool.c: $(BUILT_SOURCES)
diff --git a/npa/src/npa-tool.c b/npa/src/npa-tool.c
index 9503ece..c87c0ea 100644
--- a/npa/src/npa-tool.c
+++ b/npa/src/npa-tool.c
@@ -18,10 +18,11 @@
  */
 #include "cmdline.h"
 #include "config.h"
+#include <eac/pace.h>
 #include <libopensc/log.h>
+#include <libopensc/opensc.h>
 #include <npa/npa.h>
 #include <npa/scutil.h>
-#include <openssl/pace.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/npa/src/npa.c b/npa/src/npa.c
index 72b68ae..c763d1f 100644
--- a/npa/src/npa.c
+++ b/npa/src/npa.c
@@ -17,22 +17,22 @@
  * ccid.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include "npa.h"
-#include "sm.h"
 #include "scutil.h"
+#include "sm.h"
 #include "sslutil.h"
+#include <eac/cv_cert.h>
+#include <eac/eac.h>
+#include <eac/pace.h>
+#include <eac/ta.h>
 #include <libopensc/asn1.h>
 #include <libopensc/log.h>
 #include <libopensc/opensc.h>
 #include <openssl/asn1t.h>
 #include <openssl/bio.h>
 #include <openssl/buffer.h>
-#include <openssl/cv_cert.h>
-#include <openssl/eac.h>
-#include <openssl/ta.h>
 #include <openssl/err.h>
 #include <openssl/evp.h>
 #include <openssl/objects.h>
-#include <openssl/pace.h>
 #include <string.h>
 
 
@@ -173,6 +173,11 @@ struct npa_sm_ctx {
     BUF_MEM *auxiliary_data;
 };
 
+
+/* included in OpenPACE, but not propagated */
+extern BUF_MEM *BUF_MEM_create_init(const void *buf, size_t len);
+
+
 static int npa_sm_encrypt(sc_card_t *card, const struct sm_ctx *ctx,
         const u8 *data, size_t datalen, u8 **enc);
 static int npa_sm_decrypt(sc_card_t *card, const struct sm_ctx *ctx,
diff --git a/npa/src/npa/npa.h b/npa/src/npa/npa.h
index debc01d..8945752 100644
--- a/npa/src/npa/npa.h
+++ b/npa/src/npa/npa.h
@@ -26,10 +26,10 @@
 #ifndef _CCID_NPA_H
 #define _CCID_NPA_H
 
-#include <npa/sm.h>
+#include <eac/eac.h>
+#include <eac/pace.h>
 #include <libopensc/opensc.h>
-#include <openssl/eac.h>
-#include <openssl/pace.h>
+#include <npa/sm.h>
 
 #ifdef __cplusplus
 extern "C" {