test: Add uoscore tests

Add unit tests for OSCORE library.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
diff --git a/tests/lib/uoscore/CMakeLists.txt b/tests/lib/uoscore/CMakeLists.txt
new file mode 100644
index 0000000..9a97348
--- /dev/null
+++ b/tests/lib/uoscore/CMakeLists.txt
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(uoscore)
+
+FILE(GLOB
+     app_sources
+     src/*.c
+     src/oscore_testvector_tests/*.c
+)
+
+target_sources(app PRIVATE ${app_sources})
+target_include_directories(app PRIVATE
+  src/oscore_testvector_tests
+)
diff --git a/tests/lib/uoscore/prj.conf b/tests/lib/uoscore/prj.conf
new file mode 100644
index 0000000..4063247
--- /dev/null
+++ b/tests/lib/uoscore/prj.conf
@@ -0,0 +1,15 @@
+CONFIG_ZTEST=y
+CONFIG_ZTEST_NEW_API=y
+CONFIG_ZTEST_STACK_SIZE=16384
+
+CONFIG_ENTROPY_GENERATOR=y
+CONFIG_TEST_RANDOM_GENERATOR=y
+
+CONFIG_ZCBOR=y
+CONFIG_ZCBOR_CANONICAL=y
+CONFIG_UOSCORE=y
+
+CONFIG_MBEDTLS=y
+CONFIG_MBEDTLS_ENABLE_HEAP=y
+CONFIG_MBEDTLS_HEAP_SIZE=2048
+CONFIG_MBEDTLS_ZEPHYR_ENTROPY=y
diff --git a/tests/lib/uoscore/src/main.c b/tests/lib/uoscore/src/main.c
new file mode 100644
index 0000000..540acdc
--- /dev/null
+++ b/tests/lib/uoscore/src/main.c
@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2021 Fraunhofer AISEC.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/zephyr.h>
+#include <zephyr/ztest.h>
+
+/* OSCORE testvector tests */
+ZTEST_SUITE(oscore_tests, NULL, NULL, NULL, NULL, NULL);
diff --git a/tests/lib/uoscore/src/oscore_testvector_tests/oscore_test_vectors.h b/tests/lib/uoscore/src/oscore_testvector_tests/oscore_test_vectors.h
new file mode 100644
index 0000000..84773f6
--- /dev/null
+++ b/tests/lib/uoscore/src/oscore_testvector_tests/oscore_test_vectors.h
@@ -0,0 +1,346 @@
+/*
+ * Copyright (c) 2021 Fraunhofer AISEC.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <oscore.h>
+
+/**
+ * Test 1:
+ * - Client Key derivation with master salt see RFC8613 Appendix C.1.1
+ * - Generating OSCORE request with key form C.1.1 see RFC8613 Appendix C.4
+ */
+
+/* Test vector C1.1: Key derivation with Master Salt */
+const uint8_t T1__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T1__MASTER_SECRET_LEN = sizeof(T1__MASTER_SECRET);
+
+const uint8_t *T1__SENDER_ID;
+uint8_t T1__SENDER_ID_LEN;
+
+const uint8_t T1__RECIPIENT_ID[1] = { 0x01 };
+uint8_t T1__RECIPIENT_ID_LEN = sizeof(T1__RECIPIENT_ID);
+
+const uint8_t T1__MASTER_SALT[8] = { 0x9e, 0x7c, 0xa9, 0x22,
+				     0x23, 0x78, 0x63, 0x40 };
+uint8_t T1__MASTER_SALT_LEN = sizeof(T1__MASTER_SALT);
+
+const uint8_t *T1__ID_CONTEXT;
+uint8_t T1__ID_CONTEXT_LEN;
+
+/* Test vector C4: Generating a OSCORE Packet with key material form test vector
+ * C.1
+ */
+const uint8_t T1__COAP_REQ[] = { 0x44, 0x01, 0x5d, 0x1f, 0x00, 0x00, 0x39, 0x74,
+				 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f,
+				 0x73, 0x74, 0x83, 0x74, 0x76, 0x31 };
+uint16_t T1__COAP_REQ_LEN = sizeof(T1__COAP_REQ);
+
+/* Expected result */
+const uint8_t T1__SENDER_KEY[] = { 0xf0, 0x91, 0x0e, 0xd7, 0x29, 0x5e,
+				   0x6a, 0xd4, 0xb5, 0x4f, 0xc7, 0x93,
+				   0x15, 0x43, 0x02, 0xff };
+uint8_t T1__SENDER_KEY_LEN = sizeof(T1__SENDER_KEY);
+
+const uint8_t T1__RECIPIENT_KEY[] = { 0xff, 0xb1, 0x4e, 0x09, 0x3c, 0x94,
+				      0xc9, 0xca, 0xc9, 0x47, 0x16, 0x48,
+				      0xb4, 0xf9, 0x87, 0x10 };
+uint8_t T1__RECIPIENT_KEY_LEN = sizeof(T1__RECIPIENT_KEY);
+
+const uint8_t T1__COMMON_IV[] = { 0x46, 0x22, 0xd4, 0xdd, 0x6d, 0x94, 0x41,
+				  0x68, 0xee, 0xfb, 0x54, 0x98, 0x7c };
+uint8_t T1__COMMON_IV_LEN = sizeof(T1__COMMON_IV);
+
+const uint8_t T1__OSCORE_REQ[] = { 0x44, 0x02, 0x5d, 0x1f, 0x00, 0x00, 0x39,
+				   0x74, 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c,
+				   0x68, 0x6f, 0x73, 0x74, 0x62, 0x09, 0x14,
+				   0xff, 0x61, 0x2f, 0x10, 0x92, 0xf1, 0x77,
+				   0x6f, 0x1c, 0x16, 0x68, 0xb3, 0x82, 0x5e };
+uint8_t T1__OSCORE_REQ_LEN = sizeof(T1__OSCORE_REQ);
+
+/**
+ * Test 2:
+ * - Server Key derivation with master salt see RFC8613 Appendix C.1.2
+ * - Generating OSCORE response with key form C.1.2 see RFC8613 Appendix C.7
+ */
+const uint8_t T2__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T2__MASTER_SECRET_LEN = sizeof(T2__MASTER_SECRET);
+
+uint8_t T2__SENDER_ID[] = { 0x01 };
+uint8_t T2__SENDER_ID_LEN = sizeof(T2__SENDER_ID);
+
+uint8_t *T2__RECIPIENT_ID;
+uint8_t T2__RECIPIENT_ID_LEN;
+
+const uint8_t T2__MASTER_SALT[8] = { 0x9e, 0x7c, 0xa9, 0x22,
+				     0x23, 0x78, 0x63, 0x40 };
+uint8_t T2__MASTER_SALT_LEN = sizeof(T2__MASTER_SALT);
+
+uint8_t *T2__ID_CONTEXT;
+uint8_t T2__ID_CONTEXT_LEN;
+
+/* The OSCORE message created in C4 (35 Byte). Constructed from a CoAP request
+ * of length 22. This request contains no payload. The request contains only
+ * Uri-host (locahost) and Uri-path option (tv1). In the OSCORE packet Uri-host
+ * option is transferred as plain normal option, The Uri-path is contained in
+ * the ciphertext.
+ */
+const uint8_t T2__OSCORE_REQ[] = { 0x44, 0x02, 0x5d, 0x1f, 0x00, 0x00, 0x39,
+				   0x74, 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c,
+				   0x68, 0x6f, 0x73, 0x74, 0x62, 0x09, 0x14,
+				   0xff, 0x61, 0x2f, 0x10, 0x92, 0xf1, 0x77,
+				   0x6f, 0x1c, 0x16, 0x68, 0xb3, 0x82, 0x5e };
+uint8_t T2__OSCORE_REQ_LEN = sizeof(T2__OSCORE_REQ);
+
+/* Unprotected CoAP response (21 bytes) */
+/* Contains the payload "Hello World!" */
+const uint8_t T2__COAP_RESPONSE[] = {
+	0x64, 0x45, 0x5d, 0x1f, 0x00, 0x00, 0x39, 0x74, 0xff, 0x48, 0x65,
+	0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21
+};
+uint8_t T2__COAP_RESPONSE_LEN = sizeof(T2__COAP_RESPONSE);
+
+/* Expected result */
+/* the  reconstructed coap request see Appendix C4 */
+const uint8_t T2__COAP_REQ[] = { 0x44, 0x01, 0x5d, 0x1f, 0x00, 0x00, 0x39, 0x74,
+				 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f,
+				 0x73, 0x74, 0x83, 0x74, 0x76, 0x31 };
+uint8_t T2__COAP_REQ_LEN = sizeof(T2__COAP_REQ);
+
+const uint8_t T2__OSCORE_RESP[] = { 0x64, 0x44, 0x5D, 0x1F, 0x00, 0x00, 0x39,
+				    0x74, 0x90, 0xFF, 0xDB, 0xAA, 0xD1, 0xE9,
+				    0xA7, 0xE7, 0xB2, 0xA8, 0x13, 0xD3, 0xC3,
+				    0x15, 0x24, 0x37, 0x83, 0x03, 0xCD, 0xAF,
+				    0xAE, 0x11, 0x91, 0x06 };
+uint8_t T2__OSCORE_RESP_LEN = sizeof(T2__OSCORE_RESP);
+
+/**
+ * Test 3:
+ * - Client Key derivation without master salt see RFC8613 Appendix C.2.1
+ * - Generating OSCORE request with key form C.2.1 see RFC8613 Appendix C.5
+ */
+/* Test vector C2.1: Key derivation without Master Salt */
+const uint8_t T3__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T3__MASTER_SECRET_LEN = sizeof(T3__MASTER_SECRET);
+
+const uint8_t T3__SENDER_ID[1] = { 0x00 };
+uint8_t T3__SENDER_ID_LEN = sizeof(T3__SENDER_ID);
+
+const uint8_t T3__RECIPIENT_ID[1] = { 0x01 };
+uint8_t T3__RECIPIENT_ID_LEN = sizeof(T3__RECIPIENT_ID);
+
+const uint8_t *T3__MASTER_SALT;
+uint8_t T3__MASTER_SALT_LEN;
+
+const uint8_t *T3__ID_CONTEXT;
+uint8_t T3__ID_CONTEXT_LEN;
+
+/* Test vector C5: Generating a OSCORE Packet with key material form test vector
+ * C.2.1
+ */
+const uint8_t T3__COAP_REQ[] = { 0x44, 0x01, 0x71, 0xc3, 0x00, 0x00, 0xb9, 0x32,
+				 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f,
+				 0x73, 0x74, 0x83, 0x74, 0x76, 0x31 };
+uint16_t T3__COAP_REQ_LEN = sizeof(T3__COAP_REQ);
+
+/* expected result */
+const uint8_t T3__OSCORE_REQ[] = {
+	0x44, 0x02, 0x71, 0xc3, 0x00, 0x00, 0xb9, 0x32, 0x39, 0x6c, 0x6f, 0x63,
+	0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x63, 0x09, 0x14, 0x00, 0xff, 0x4e,
+	0xd3, 0x39, 0xa5, 0xa3, 0x79, 0xb0, 0xb8, 0xbc, 0x73, 0x1f, 0xff, 0xb0
+};
+uint8_t T3__OSCORE_REQ_LEN = sizeof(T3__OSCORE_REQ);
+
+/**
+ * Test 4:
+ * - Server Key derivation without master salt see RFC8613 Appendix C.2.2
+ */
+/*Test vector C2.2: Key derivation without Master Salt*/
+const uint8_t T4__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T4__MASTER_SECRET_LEN = sizeof(T4__MASTER_SECRET);
+
+const uint8_t T4__SENDER_ID[1] = { 0x01 };
+uint8_t T4__SENDER_ID_LEN = sizeof(T4__SENDER_ID);
+
+const uint8_t T4__RECIPIENT_ID[1] = { 0x00 };
+uint8_t T4__RECIPIENT_ID_LEN = sizeof(T4__RECIPIENT_ID);
+
+const uint8_t *T4__MASTER_SALT;
+uint8_t T4__MASTER_SALT_LEN;
+
+const uint8_t *T4__ID_CONTEXT;
+uint8_t T4__ID_CONTEXT_LEN;
+
+/* expected result */
+const uint8_t T4__SENDER_KEY[] = { 0xe5, 0x7b, 0x56, 0x35, 0x81, 0x51,
+				   0x77, 0xcd, 0x67, 0x9a, 0xb4, 0xbc,
+				   0xec, 0x9d, 0x7d, 0xda };
+uint8_t T4__SENDER_KEY_LEN = sizeof(T4__SENDER_KEY);
+
+const uint8_t T4__RECIPIENT_KEY[] = { 0x32, 0x1b, 0x26, 0x94, 0x32, 0x53,
+				      0xc7, 0xff, 0xb6, 0x00, 0x3b, 0x0b,
+				      0x64, 0xd7, 0x40, 0x41 };
+uint8_t T4__RECIPIENT_KEY_LEN = sizeof(T4__RECIPIENT_KEY);
+
+const uint8_t T4__COMMON_IV[] = { 0xbe, 0x35, 0xae, 0x29, 0x7d, 0x2d, 0xac,
+				  0xe9, 0x10, 0xc5, 0x2e, 0x99, 0xf9 };
+uint8_t T4__COMMON_IV_LEN = sizeof(T4__COMMON_IV);
+
+/**
+ * Test 5 :
+ * - Client Key derivation with ID Context see Appendix 3.1
+ * - OSCORE request generation see Appendix C6
+ */
+/* Test vector C3.1: Key derivation with ID Context */
+const uint8_t T5__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T5__MASTER_SECRET_LEN = sizeof(T5__MASTER_SECRET);
+
+const uint8_t *T5__SENDER_ID;
+uint8_t T5__SENDER_ID_LEN;
+
+const uint8_t T5__RECIPIENT_ID[1] = { 0x01 };
+uint8_t T5__RECIPIENT_ID_LEN = sizeof(T5__RECIPIENT_ID);
+
+const uint8_t T5__MASTER_SALT[8] = { 0x9e, 0x7c, 0xa9, 0x22,
+				     0x23, 0x78, 0x63, 0x40 };
+uint8_t T5__MASTER_SALT_LEN = sizeof(T5__MASTER_SALT);
+
+const uint8_t T5__ID_CONTEXT[8] = { 0x37, 0xcb, 0xf3, 0x21,
+				    0x00, 0x17, 0xa2, 0xd3 };
+uint8_t T5__ID_CONTEXT_LEN = sizeof(T5__ID_CONTEXT);
+
+/* Test vector C6: Generating a OSCORE Packet with key material form test vector
+ * C.2.1
+ */
+const uint8_t T5__COAP_REQ[] = { 0x44, 0x01, 0x2f, 0x8e, 0xef, 0x9b, 0xbf, 0x7a,
+				 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f,
+				 0x73, 0x74, 0x83, 0x74, 0x76, 0x31 };
+uint16_t T5__COAP_REQ_LEN = sizeof(T5__COAP_REQ);
+
+/* Expected result */
+const uint8_t T5__OSCORE_REQ[] = {
+	0x44, 0x02, 0x2f, 0x8e, 0xef, 0x9b, 0xbf, 0x7a, 0x39, 0x6c, 0x6f,
+	0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x6b, 0x19, 0x14, 0x08,
+	0x37, 0xcb, 0xf3, 0x21, 0x00, 0x17, 0xa2, 0xd3, 0xff, 0x72, 0xcd,
+	0x72, 0x73, 0xfd, 0x33, 0x1a, 0xc4, 0x5c, 0xff, 0xbe, 0x55, 0xc3
+};
+uint8_t T5__OSCORE_REQ_LEN = sizeof(T5__OSCORE_REQ);
+
+/**
+ * Test 6:
+ * - Server Key derivation with ID context see RFC8613 Appendix C.3.2
+ */
+const uint8_t T6__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T6__MASTER_SECRET_LEN = sizeof(T6__MASTER_SECRET);
+
+const uint8_t T6__SENDER_ID[1] = { 0x01 };
+uint8_t T6__SENDER_ID_LEN = sizeof(T6__SENDER_ID);
+
+const uint8_t *T6__RECIPIENT_ID;
+uint8_t T6__RECIPIENT_ID_LEN;
+
+const uint8_t T6__MASTER_SALT[8] = { 0x9e, 0x7c, 0xa9, 0x22,
+				     0x23, 0x78, 0x63, 0x40 };
+uint8_t T6__MASTER_SALT_LEN = sizeof(T5__MASTER_SALT);
+
+const uint8_t T6__ID_CONTEXT[8] = { 0x37, 0xcb, 0xf3, 0x21,
+				    0x00, 0x17, 0xa2, 0xd3 };
+uint8_t T6__ID_CONTEXT_LEN = sizeof(T5__ID_CONTEXT);
+
+/* expected result */
+const uint8_t T6__SENDER_KEY[] = { 0xe3, 0x9a, 0x0c, 0x7c, 0x77, 0xb4,
+				   0x3f, 0x03, 0xb4, 0xb3, 0x9a, 0xb9,
+				   0xa2, 0x68, 0x69, 0x9f };
+uint8_t T6__SENDER_KEY_LEN = sizeof(T6__SENDER_KEY);
+
+const uint8_t T6__RECIPIENT_KEY[] = { 0xaf, 0x2a, 0x13, 0x00, 0xa5, 0xe9,
+				      0x57, 0x88, 0xb3, 0x56, 0x33, 0x6e,
+				      0xee, 0xcd, 0x2b, 0x92 };
+uint8_t T6__RECIPIENT_KEY_LEN = sizeof(T6__RECIPIENT_KEY);
+
+const uint8_t T6__COMMON_IV[] = { 0x2c, 0xa5, 0x8f, 0xb8, 0x5f, 0xf1, 0xb8,
+				  0x1c, 0x0b, 0x71, 0x81, 0xb8, 0x5e };
+uint8_t T6__COMMON_IV_LEN = sizeof(T6__COMMON_IV);
+
+/**
+ * Test 7:
+ * - Server with partial IV see Appendix C8
+ * - currently not supported
+ */
+const uint8_t T7__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T7__MASTER_SECRET_LEN = sizeof(T7__MASTER_SECRET);
+
+const uint8_t T7__SENDER_ID[] = { 0x01 };
+uint8_t T7__SENDER_ID_LEN = sizeof(T7__SENDER_ID);
+
+const uint8_t *T7__RECIPIENT_ID;
+uint8_t T7__RECIPIENT_ID_LEN;
+
+const uint8_t T7__MASTER_SALT[8] = { 0x9e, 0x7c, 0xa9, 0x22,
+				     0x23, 0x78, 0x63, 0x40 };
+uint8_t T7__MASTER_SALT_LEN = sizeof(T7__MASTER_SALT);
+
+const uint8_t *T7__ID_CONTEXT;
+uint8_t T7__ID_CONTEXT_LEN;
+
+/* Test vector C4: Generating a OSCORE Packet with key material form test vector
+ * C.1
+ */
+/* the OSCORE message created in C4 */
+const uint8_t T7__OSCORE_REQ[] = { 0x44, 0x02, 0x5d, 0x1f, 0x00, 0x00, 0x39,
+				   0x74, 0x39, 0x6c, 0x6f, 0x63, 0x61, 0x6c,
+				   0x68, 0x6f, 0x73, 0x74, 0x62, 0x09, 0x14,
+				   0xff, 0x61, 0x2f, 0x10, 0x92, 0xf1, 0x77,
+				   0x6f, 0x1c, 0x16, 0x68, 0xb3, 0x82, 0x5e };
+uint8_t T7__OSCORE_REQ_LEN = sizeof(T7__OSCORE_REQ);
+
+/* unprotected CoAP response */
+const uint8_t T7__COAP_RESPONSE[] = {
+	0x64, 0x45, 0x5d, 0x1f, 0x00, 0x00, 0x39, 0x74, 0xff, 0x48, 0x65,
+	0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21
+};
+uint8_t T7__COAP_RESPONSE_LEN = sizeof(T7__COAP_RESPONSE);
+
+/* expected result */
+const uint8_t T7__OSCORE_RES[] = { 0x64, 0x44, 0x5d, 0x1f, 0x00, 0x00, 0x39,
+				   0x74, 0x92, 0x01, 0x00, 0xff, 0x4d, 0x4c,
+				   0x13, 0x66, 0x93, 0x84, 0xb6, 0x73, 0x54,
+				   0xb2, 0xb6, 0x17, 0x5f, 0xf4, 0xb8, 0x65,
+				   0x8c, 0x66, 0x6a, 0x6c, 0xf8, 0x8e };
+uint8_t T7__OSCORE_RES_LEN = sizeof(T7__OSCORE_RES);
+
+/**
+ * Test 8:
+ * - Simple ACK packet should not be encrypted and result should be the same as
+ *   input buffer (see RFC8613 Section 4.2)
+ */
+const uint8_t T8__MASTER_SECRET[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+					0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+					0x0d, 0x0e, 0x0f, 0x10 };
+uint8_t T8__MASTER_SECRET_LEN = sizeof(T2__MASTER_SECRET);
+
+const uint8_t T8__SENDER_ID[] = { 0x01 };
+uint8_t T8__SENDER_ID_LEN = sizeof(T2__SENDER_ID);
+
+const uint8_t T8__MASTER_SALT[8] = { 0x9e, 0x7c, 0xa9, 0x22,
+				     0x23, 0x78, 0x63, 0x40 };
+uint8_t T8__MASTER_SALT_LEN = sizeof(T2__MASTER_SALT);
+
+/* Simple ACK message (code 0=EMPTY, type 2=ACK, no payload). */
+const uint8_t T8__COAP_ACK[] = { 0x60, 0x00, 0x45, 0x69 };
+uint8_t T8__COAP_ACK_LEN = sizeof(T8__COAP_ACK);
diff --git a/tests/lib/uoscore/src/oscore_testvector_tests/oscore_tests.c b/tests/lib/uoscore/src/oscore_testvector_tests/oscore_tests.c
new file mode 100644
index 0000000..095d897
--- /dev/null
+++ b/tests/lib/uoscore/src/oscore_testvector_tests/oscore_tests.c
@@ -0,0 +1,346 @@
+/*
+ * Copyright (c) 2021 Fraunhofer AISEC.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdio.h>
+#include <zephyr/zephyr.h>
+#include <zephyr/ztest.h>
+#include <oscore.h>
+
+#include "oscore_test_vectors.h"
+
+/**
+ * Test 1:
+ * - Client Key derivation with master salt see RFC8613 Appendix C.1.1
+ * - Generating OSCORE request with key form C.1.1 see RFC8613 Appendix C.4
+ */
+ZTEST(oscore_tests, oscore_client_test1)
+{
+	enum err r;
+	struct context c_client;
+	struct oscore_init_params params = {
+		.dev_type = CLIENT,
+		.master_secret.ptr = (uint8_t *)T1__MASTER_SECRET,
+		.master_secret.len = T1__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T1__SENDER_ID,
+		.sender_id.len = T1__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T1__RECIPIENT_ID,
+		.recipient_id.len = T1__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T1__MASTER_SALT,
+		.master_salt.len = T1__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T1__ID_CONTEXT,
+		.id_context.len = T1__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params, &c_client);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	/*
+	 * required only for the test vector.
+	 * during normal operation the sender sequence number is
+	 * increased automatically after every sending
+	 */
+	c_client.sc.sender_seq_num = 20;
+
+	uint8_t buf_oscore[256];
+	uint32_t buf_oscore_len = sizeof(buf_oscore);
+
+	r = coap2oscore((uint8_t *)T1__COAP_REQ, T1__COAP_REQ_LEN,
+			(uint8_t *)&buf_oscore, &buf_oscore_len, &c_client);
+	zassert_equal(r, ok, "Error in coap2oscore!");
+
+	zassert_mem_equal__(c_client.sc.sender_key.ptr, T1__SENDER_KEY,
+			    c_client.sc.sender_key.len,
+			    "T1 sender key derivation failed");
+
+	zassert_mem_equal__(c_client.rc.recipient_key.ptr, T1__RECIPIENT_KEY,
+			    c_client.rc.recipient_key.len,
+			    "T1 recipient key derivation failed");
+
+	zassert_mem_equal__(c_client.cc.common_iv.ptr, T1__COMMON_IV,
+			    c_client.cc.common_iv.len,
+			    "T1 common IV derivation failed");
+
+	zassert_mem_equal__(&buf_oscore, T1__OSCORE_REQ, T1__OSCORE_REQ_LEN,
+			    "coap2oscore failed");
+}
+
+/**
+ * Test 3:
+ * - Client Key derivation without master salt see RFC8613 Appendix C.2.1
+ * - Generating OSCORE request with key form C.2.1 see RFC8613 Appendix C.5
+ */
+ZTEST(oscore_tests, oscore_client_test3)
+{
+	enum err r;
+	struct context c_client;
+	struct oscore_init_params params = {
+		.dev_type = CLIENT,
+		.master_secret.ptr = (uint8_t *)T3__MASTER_SECRET,
+		.master_secret.len = T3__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T3__SENDER_ID,
+		.sender_id.len = T3__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T3__RECIPIENT_ID,
+		.recipient_id.len = T3__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T3__MASTER_SALT,
+		.master_salt.len = T3__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T3__ID_CONTEXT,
+		.id_context.len = T3__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params, &c_client);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	/*
+	 * required only for the test vector.
+	 * during normal operation the sender sequence number is
+	 * increased automatically after every sending
+	 */
+	c_client.sc.sender_seq_num = 20;
+
+	uint8_t buf_oscore[256];
+	uint32_t buf_oscore_len = sizeof(buf_oscore);
+
+	r = coap2oscore((uint8_t *)T3__COAP_REQ, T3__COAP_REQ_LEN,
+			(uint8_t *)&buf_oscore, &buf_oscore_len, &c_client);
+
+	zassert_equal(r, ok, "Error in coap2oscore!");
+
+	zassert_mem_equal__(&buf_oscore, T3__OSCORE_REQ, T3__OSCORE_REQ_LEN,
+			    "coap2oscore failed");
+}
+
+/**
+ * Test 5 :
+ * - Client Key derivation with ID Context see Appendix 3.1
+ * - OSCORE request generation see Appendix C6
+ */
+ZTEST(oscore_tests, oscore_client_test5)
+{
+	enum err r;
+	struct context c_client;
+	struct oscore_init_params params = {
+		.dev_type = CLIENT,
+		.master_secret.ptr = (uint8_t *)T5__MASTER_SECRET,
+		.master_secret.len = T5__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T5__SENDER_ID,
+		.sender_id.len = T5__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T5__RECIPIENT_ID,
+		.recipient_id.len = T5__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T5__MASTER_SALT,
+		.master_salt.len = T5__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T5__ID_CONTEXT,
+		.id_context.len = T5__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params, &c_client);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	/*
+	 * required only for the test vector.
+	 * during normal operation the sender sequence number is
+	 * increased automatically after every sending
+	 */
+	c_client.sc.sender_seq_num = 20;
+
+	uint8_t buf_oscore[256];
+	uint32_t buf_oscore_len = sizeof(buf_oscore);
+
+	r = coap2oscore((uint8_t *)T5__COAP_REQ, T5__COAP_REQ_LEN,
+			(uint8_t *)&buf_oscore, &buf_oscore_len, &c_client);
+
+	zassert_equal(r, ok, "Error in coap2oscore!");
+
+	zassert_mem_equal__(&buf_oscore, T5__OSCORE_REQ, buf_oscore_len,
+			    "coap2oscore failed");
+}
+
+/**
+ * Test 2:
+ * - Server Key derivation with master salt see RFC8613 Appendix C.1.2
+ * - Generating OSCORE response with key form C.1.2 see RFC8613 Appendix C.7
+ */
+ZTEST(oscore_tests, oscore_server_test2)
+{
+	enum err r;
+	struct context c_server;
+	struct oscore_init_params params_server = {
+		.dev_type = SERVER,
+		.master_secret.ptr = (uint8_t *)T2__MASTER_SECRET,
+		.master_secret.len = T2__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T2__SENDER_ID,
+		.sender_id.len = T2__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T2__RECIPIENT_ID,
+		.recipient_id.len = T2__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T2__MASTER_SALT,
+		.master_salt.len = T2__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T2__ID_CONTEXT,
+		.id_context.len = T2__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params_server, &c_server);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	/* Test decrypting of an incoming request */
+	uint8_t buf_coap[256];
+	uint32_t buf_coap_len = sizeof(buf_coap);
+	bool oscore_present_flag = false;
+
+	r = oscore2coap((uint8_t *)T2__OSCORE_REQ, T2__OSCORE_REQ_LEN, buf_coap,
+			&buf_coap_len, &oscore_present_flag, &c_server);
+
+	zassert_equal(r, ok, "Error in oscore2coap!");
+	zassert_true(oscore_present_flag, "The packet is not OSCORE packet");
+	zassert_mem_equal__(&buf_coap, T2__COAP_REQ, buf_coap_len,
+			    "oscore2coap failed");
+
+	/* Test generating an encrypted response, see Appendix C7 */
+	uint8_t buf_oscore[256];
+	uint32_t buf_oscore_len = sizeof(buf_oscore);
+
+	r = coap2oscore((uint8_t *)T2__COAP_RESPONSE, T2__COAP_RESPONSE_LEN,
+			(uint8_t *)&buf_oscore, &buf_oscore_len, &c_server);
+
+	zassert_equal(r, ok, "Error in coap2oscore");
+
+	zassert_mem_equal__(&buf_oscore, T2__OSCORE_RESP, buf_oscore_len,
+			    "coap2oscore failed");
+}
+
+ZTEST(oscore_tests, oscore_server_test4)
+{
+	enum err r;
+	struct context c_server;
+	struct oscore_init_params params_server = {
+		.dev_type = SERVER,
+		.master_secret.ptr = (uint8_t *)T4__MASTER_SECRET,
+		.master_secret.len = T4__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T4__SENDER_ID,
+		.sender_id.len = T4__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T4__RECIPIENT_ID,
+		.recipient_id.len = T4__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T4__MASTER_SALT,
+		.master_salt.len = T4__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T4__ID_CONTEXT,
+		.id_context.len = T4__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params_server, &c_server);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	zassert_mem_equal__(c_server.sc.sender_key.ptr, T4__SENDER_KEY,
+			    c_server.sc.sender_key.len,
+			    "T4 sender key derivation failed");
+
+	zassert_mem_equal__(c_server.rc.recipient_key.ptr, T4__RECIPIENT_KEY,
+			    c_server.rc.recipient_key.len,
+			    "T4 recipient key derivation failed");
+
+	zassert_mem_equal__(c_server.cc.common_iv.ptr, T4__COMMON_IV,
+			    c_server.cc.common_iv.len,
+			    "T4 common IV derivation failed");
+}
+
+/**
+ * Test 6:
+ * - Server Key derivation with ID context see RFC8613 Appendix C.3.2
+ */
+ZTEST(oscore_tests, oscore_server_test6)
+{
+	enum err r;
+	struct context c_server;
+	struct oscore_init_params params_server = {
+		.dev_type = SERVER,
+		.master_secret.ptr = (uint8_t *)T6__MASTER_SECRET,
+		.master_secret.len = T6__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T6__SENDER_ID,
+		.sender_id.len = T6__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T6__RECIPIENT_ID,
+		.recipient_id.len = T6__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T6__MASTER_SALT,
+		.master_salt.len = T6__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T6__ID_CONTEXT,
+		.id_context.len = T6__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params_server, &c_server);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	zassert_mem_equal__(c_server.sc.sender_key.ptr, T6__SENDER_KEY,
+			    c_server.sc.sender_key.len,
+			    "T6 sender key derivation failed");
+
+	zassert_mem_equal__(c_server.rc.recipient_key.ptr, T6__RECIPIENT_KEY,
+			    c_server.rc.recipient_key.len,
+			    "T6 recipient key derivation failed");
+
+	zassert_mem_equal__(c_server.cc.common_iv.ptr, T6__COMMON_IV,
+			    c_server.cc.common_iv.len,
+			    "T6 common IV derivation failed");
+}
+
+/**
+ * Test 8:
+ * - Simple ACK packet should not be encrypted and result should be the same as
+ *   input buffer (see RFC8613 Section 4.2)
+ */
+ZTEST(oscore_tests, oscore_misc_test8)
+{
+	enum err r;
+	struct context c;
+	struct oscore_init_params params = {
+		.dev_type = SERVER,
+		.master_secret.ptr = (uint8_t *)T7__MASTER_SECRET,
+		.master_secret.len = T7__MASTER_SECRET_LEN,
+		.sender_id.ptr = (uint8_t *)T7__SENDER_ID,
+		.sender_id.len = T7__SENDER_ID_LEN,
+		.recipient_id.ptr = (uint8_t *)T7__RECIPIENT_ID,
+		.recipient_id.len = T7__RECIPIENT_ID_LEN,
+		.master_salt.ptr = (uint8_t *)T7__MASTER_SALT,
+		.master_salt.len = T7__MASTER_SALT_LEN,
+		.id_context.ptr = (uint8_t *)T7__ID_CONTEXT,
+		.id_context.len = T7__ID_CONTEXT_LEN,
+		.aead_alg = OSCORE_AES_CCM_16_64_128,
+		.hkdf = OSCORE_SHA_256,
+	};
+
+	r = oscore_context_init(&params, &c);
+
+	zassert_equal(r, ok, "Error in oscore_context_init");
+
+	/* Test if encrypting simple ACK message results in valid unencrypted
+	 * message, see Section 4.2
+	 */
+	uint8_t buf_oscore[256];
+	uint32_t buf_oscore_len = sizeof(buf_oscore);
+
+	r = coap2oscore((uint8_t *)T8__COAP_ACK, T8__COAP_ACK_LEN,
+			(uint8_t *)&buf_oscore, &buf_oscore_len, &c);
+
+	zassert_equal(r, ok, "Error in coap2oscore");
+
+	zassert_mem_equal__(&buf_oscore, T8__COAP_ACK, T8__COAP_ACK_LEN,
+			    "coap2oscore failed");
+
+	zassert_equal(buf_oscore_len, T8__COAP_ACK_LEN, "coap2oscore failed");
+}