diff --git a/configure.ac b/configure.ac
index 224abf8..652852f 100755
--- a/configure.ac
+++ b/configure.ac
@@ -232,11 +232,14 @@ AC_ARG_WITH([json],
 		  
 if test "x$search_json" = "xyes"; then
     # use pkg only
+    # FIXME: search
     _have_json="yes"
     LDFLAGS="$LDFLAGS -ljansson"
     CFLAGS="$CFLAGS -DHAVE_JSON=1"
 fi
 
+AM_CONDITIONAL([BUILDJSON], [test "x$_have_json" = "xyes"])
+
 
 # Check for some target-specific stuff
 case "$host" in
diff --git a/include/pcp/config.h.in b/include/pcp/config.h.in
new file mode 100644
index 0000000..b53de92
--- /dev/null
+++ b/include/pcp/config.h.in
@@ -0,0 +1,191 @@
+/* include/pcp/config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to 1 if you have the `arc4random' function. */
+#undef HAVE_ARC4RANDOM
+
+/* Define to 1 if you have the `arc4random_buf' function. */
+#undef HAVE_ARC4RANDOM_BUF
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#undef HAVE_ARPA_INET_H
+
+/* Define if be32toh() is available */
+#undef HAVE_BE32TOH
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the <endian.h> header file. */
+#undef HAVE_ENDIAN_H
+
+/* Define to 1 if you have the <errno.h> header file. */
+#undef HAVE_ERRNO_H
+
+/* Define to 1 if you have the <err.h> header file. */
+#undef HAVE_ERR_H
+
+/* Define to 1 if you have the `fopen' function. */
+#undef HAVE_FOPEN
+
+/* Define to 1 if you have the `fprintf' function. */
+#undef HAVE_FPRINTF
+
+/* Define to 1 if you have the `fread' function. */
+#undef HAVE_FREAD
+
+/* Define to 1 if you have the `free' function. */
+#undef HAVE_FREE
+
+/* Define to 1 if you have the `fseek' function. */
+#undef HAVE_FSEEK
+
+/* Define to 1 if you have the `ftruncate' function. */
+#undef HAVE_FTRUNCATE
+
+/* Define to 1 if you have the `fwrite' function. */
+#undef HAVE_FWRITE
+
+/* Define to 1 if you have the <getopt.h> header file. */
+#undef HAVE_GETOPT_H
+
+/* Define to 1 if you have the `getopt_long' function. */
+#undef HAVE_GETOPT_LONG
+
+/* Define if htobe32() is available */
+#undef HAVE_HTOBE32
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `isatty' function. */
+#undef HAVE_ISATTY
+
+/* Define to 1 if you have the `sodium' library (-lsodium). */
+#undef HAVE_LIBSODIUM
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if you have the `malloc' function. */
+#undef HAVE_MALLOC
+
+/* Define to 1 if you have the `memcpy' function. */
+#undef HAVE_MEMCPY
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `memset' function. */
+#undef HAVE_MEMSET
+
+/* Define to 1 if you have the `mmap' function. */
+#undef HAVE_MMAP
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#undef HAVE_NETINET_IN_H
+
+/* Define to 1 if you have the `perror' function. */
+#undef HAVE_PERROR
+
+/* Define to 1 if you have the `posix_memalign' function. */
+#undef HAVE_POSIX_MEMALIGN
+
+/* Define to 1 if you have the `setrlimit' function. */
+#undef HAVE_SETRLIMIT
+
+/* Define to 1 if you have the `sizeof' function. */
+#undef HAVE_SIZEOF
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#undef HAVE_STDDEF_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strlen' function. */
+#undef HAVE_STRLEN
+
+/* Define to 1 if you have the `strnlen' function. */
+#undef HAVE_STRNLEN
+
+/* Define to 1 if you have the `strnstr' function. */
+#undef HAVE_STRNSTR
+
+/* Define to 1 if you have the `strtol' function. */
+#undef HAVE_STRTOL
+
+/* Define to 1 if you have the <sys/endian.h> header file. */
+#undef HAVE_SYS_ENDIAN_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the `tcgetattr' function. */
+#undef HAVE_TCGETATTR
+
+/* Define to 1 if you have the <termios.h> header file. */
+#undef HAVE_TERMIOS_H
+
+/* Define to 1 if you have the `towlower' function. */
+#undef HAVE_TOWLOWER
+
+/* Define to 1 if you have the `umask' function. */
+#undef HAVE_UMASK
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `vasprintf' function. */
+#undef HAVE_VASPRINTF
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#undef HAVE_WCTYPE_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
diff --git a/tests/Makefile.am b/tests/Makefile.am
index f40b574..a3ad79d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -24,6 +24,10 @@ if BUILDCPP
   CPPTEST=cpptest
 endif
 
+if BUILDJSON
+  MAYJSON=jsontest
+endif
+
 AM_CFLAGS = -I../include/pcp -I../src -I../libpcp/scrypt/crypto
 check_PROGRAMS = invalidkeys gencheader statictest $(CPPTEST) \
 		 buffertest sample streamtest pipetest decodertest mangle
@@ -83,7 +87,10 @@ if BUILDPY
   MAYPY=pytest
 endif
 
-test: check ctest $(MAYPY) $(MAYCPP)
+et:
+	@echo check ctest $(MAYPY) $(MAYCPP) $(MAYJSON)
+
+test: check ctest $(MAYPY) $(MAYCPP) $(MAYJSON)
 
 ctest:
 	rm -f test* v* stresstest/*
@@ -96,6 +103,9 @@ pytest:
 docpptest:
 	./unittests.pl cppunittests.cfg $(CHECK)
 
+jsontest:
+	./unittests.pl jsonunittests.cfg $(CHECK)
+
 stresstest: check
 	./unittests.pl stresstests.cfg
 
diff --git a/tests/jsonunittests.cfg b/tests/jsonunittests.cfg
new file mode 100644
index 0000000..f8251cf
--- /dev/null
+++ b/tests/jsonunittests.cfg
@@ -0,0 +1,61 @@
+# -*-html-*-
+#
+#    This file is part of Pretty Curved Privacy (pcp1).
+#
+#    Copyright (C) 2013 T.Linden.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#    You can contact me by mail: <tlinden AT cpan DOT org>.
+#
+
+pcp    = ../src/pcp1
+passwd = xxx
+verbose = 1
+include keys.cfg
+
+<test vja>
+  prepare = rm -f vja; $pcp -V vja -K -I key-alicia-sec -x a
+  <test check-json-export-public>
+    cmd = $pcp -V vja -p -j -x a -O testkeyvjapub.json
+    expect-file testkeyvjapub.json
+  </test>
+  <test check-json-export-public-isjson>
+    cmd = cat testkeyvjapub.json
+    expect = /"Alicia"/
+  </test>
+</test>
+
+<test vjb>
+  prepare = rm -f vjb; $pcp -V vjb -K -I key-bobby-sec -x b
+  <test check-json-import-public>
+    cmd = $pcp -V vjb -K -I testkeyvjapub.json -j
+    expect /added/
+  </test>
+</test>
+
+<test vjtxt>
+  <test check-json-text-vault>
+    cmd = $pcp -V vjb -t -j
+    expect = /"Alicia"/
+  </test>
+  <test check-json-text-public>
+    cmd = $pcp -V vjb -t -j -i ${idalicia}
+    expect = /"Alicia"/
+  </test>
+  <test check-json-text-secret>
+    cmd = $pcp -V vjb -t -j -i ${idbobby}
+    expect = /"Bobby"/
+  </test>
+</test>