OSCORE: Add in interopability tests

See https://core-wg.github.io/oscore/test-spec5.html

Add in new test server oscore-interop-server to provide the necessary
functionality.

Add in script and configuration files to run the tests locally.

.gitignore

@@ -86,6 +86,7 @@ examples/coap-rd-*
 examples/coap-server
 examples/coap-server-*
 examples/coap-tiny
+examples/oscore-interop-server
 examples/*.exe
 
 # the include/ folder

CMakeLists.txt

@@ -649,6 +649,11 @@ if(ENABLE_EXAMPLES)
 
     add_executable(tiny ${CMAKE_CURRENT_LIST_DIR}/examples/tiny.c)
     target_link_libraries(tiny PUBLIC ${PROJECT_NAME}::${COAP_LIBRARY_NAME})
+
+    add_executable(oscore-interop-server
+                   ${CMAKE_CURRENT_LIST_DIR}/examples/oscore-interop-server.c)
+    target_link_libraries(oscore-interop-server
+                          PUBLIC ${PROJECT_NAME}::${COAP_LIBRARY_NAME})
   endif()
 endif()
 
@@ -750,7 +755,7 @@ if(ENABLE_EXAMPLES)
     COMPONENT dev)
   if(NOT WIN32)
     install(
-      TARGETS etsi_iot_01 tiny
+      TARGETS etsi_iot_01 tiny oscore-interop-server
       DESTINATION ${CMAKE_INSTALL_BINDIR}
       COMPONENT dev)
   endif()

examples/Makefile.am

@@ -8,7 +8,19 @@
 # This file is part of the CoAP C library libcoap. Please see README and
 # COPYING for terms of use.
 
-EXTRA_DIST = share.libcoap.examples.Makefile share.libcoap.examples.README
+EXTRA_DIST = \
+  share.libcoap.examples.Makefile \
+  share.libcoap.examples.README \
+  coap_list.h \
+  getopt.c \
+  interop/a_client.conf \
+  interop/b_server.conf \
+  interop/c_client.conf \
+  interop/d_server.conf \
+  interop/e_client.conf \
+  interop/f_client.conf \
+  interop/g_client.conf \
+  oscore_testcases.sh
 
 # just do nothing if 'BUILD_EXAMPLES' isn't defined
 if BUILD_EXAMPLES
@@ -38,7 +50,7 @@ if HAVE_SERVER_SUPPORT
 
 bin_PROGRAMS += coap-server@LIBCOAP_DTLS_LIB_EXTENSION_NAME@ \
                 coap-rd@LIBCOAP_DTLS_LIB_EXTENSION_NAME@
-check_PROGRAMS += coap-etsi_iot_01
+check_PROGRAMS += coap-etsi_iot_01 oscore-interop-server
 
 if BUILD_ADD_DEFAULT_NAMES
 noinst_PROGRAMS += coap-server coap-rd
@@ -79,6 +91,10 @@ coap_etsi_iot_01_SOURCES = etsi_iot_01.c
 coap_etsi_iot_01_LDADD = $(DTLS_LIBS) \
              $(top_builddir)/.libs/libcoap-$(LIBCOAP_NAME_SUFFIX).la
 
+oscore_interop_server_SOURCES = oscore-interop-server.c
+oscore_interop_server_LDADD = $(DTLS_LIBS) \
+             $(top_builddir)/.libs/libcoap-$(LIBCOAP_NAME_SUFFIX).la
+
 coap_tiny_SOURCES = tiny.c
 coap_tiny_LDADD = $(DTLS_LIBS) \
              $(top_builddir)/.libs/libcoap-$(LIBCOAP_NAME_SUFFIX).la

examples/interop/a_client.conf

@@ -0,0 +1,8 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+sender_id,hex,""
+recipient_id,hex,"01"
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4

examples/interop/b_server.conf

@@ -0,0 +1,8 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+sender_id,hex,"01"
+recipient_id,hex,""
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4

examples/interop/c_client.conf

@@ -0,0 +1,9 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+id_context,hex,"37cbf3210017a2d3"
+sender_id,hex,""
+recipient_id,hex,"01"
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4

examples/interop/d_server.conf

@@ -0,0 +1,9 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+id_context,hex,"37cbf3210017a2d3"
+sender_id,hex,"01"
+recipient_id,hex,""
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4

examples/interop/e_client.conf

@@ -0,0 +1,8 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+sender_id,hex,"010101"
+recipient_id,hex,"01"
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4

examples/interop/f_client.conf

@@ -0,0 +1,10 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+sender_id,hex,""
+recipient_id,hex,"01"
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4
+
+break_sender_key,bool,true

examples/interop/g_client.conf

@@ -0,0 +1,10 @@
+master_secret,hex,"0102030405060708090a0b0c0d0e0f10"
+master_salt,hex,"9e7ca92223786340"
+sender_id,hex,""
+recipient_id,hex,"01"
+replay_window,integer,30
+aead_alg,integer,10
+hkdf_alg,integer,-10
+ssn_freq,integer,4
+
+break_recipient_key,bool,true