diff --git a/include/drivers/arm/ethosn_cert.h b/include/drivers/arm/ethosn_cert.h
new file mode 100644
index 0000000..7aa887d
--- /dev/null
+++ b/include/drivers/arm/ethosn_cert.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ETHOSN_CERT_H
+#define ETHOSN_CERT_H
+
+#include "ethosn_oid.h"
+#include <tbbr/tbb_ext.h>
+#include <tbbr/tbb_key.h>
+
+/* Arm(R) Ethos(TM)-N NPU Certificates */
+#define ETHOSN_NPU_FW_KEY_CERT_DEF {							\
+	.id = ETHOSN_NPU_FW_KEY_CERT,							\
+	.opt = "npu-fw-key-cert",							\
+	.help_msg = "Arm(R) Ethos(TM)-N NPU Firmware Key Certificate (output file)",	\
+	.fn = NULL,									\
+	.cn = "NPU Firmware Key Certificate",						\
+	.key = NON_TRUSTED_WORLD_KEY,							\
+	.issuer = ETHOSN_NPU_FW_KEY_CERT,						\
+	.ext = {									\
+		NON_TRUSTED_FW_NVCOUNTER_EXT,						\
+		ETHOSN_NPU_FW_CONTENT_CERT_PK_EXT,					\
+	},										\
+	.num_ext = 2 \
+}
+
+#define ETHOSN_NPU_FW_CONTENT_CERT_DEF {							\
+	.id = ETHOSN_NPU_FW_CONTENT_CERT,						\
+	.opt = "npu-fw-cert",								\
+	.help_msg = "Arm(R) Ethos(TM)-N NPU Firmware Content Certificate (output file)",\
+	.fn = NULL,									\
+	.cn = "NPU Firmware Content Certificate",					\
+	.key = ETHOSN_NPU_FW_CONTENT_CERT_KEY,						\
+	.issuer = ETHOSN_NPU_FW_CONTENT_CERT,						\
+	.ext = {									\
+		NON_TRUSTED_FW_NVCOUNTER_EXT,						\
+		ETHOSN_NPU_FW_HASH_EXT,							\
+	},										\
+	.num_ext = 2 \
+}
+
+/* NPU Extensions */
+#define ETHOSN_NPU_FW_CONTENT_CERT_PK_EXT_DEF {						\
+	.oid = ETHOSN_NPU_FW_CONTENT_CERT_PK_OID,					\
+	.help_msg = "Arm(R) Ethos(TM)-N NPU Firmware content certificate public key",	\
+	.sn = "NPUFirmwareContentCertPK",						\
+	.ln = "NPU Firmware content cerificate public key",				\
+	.asn1_type = V_ASN1_OCTET_STRING,						\
+	.type = EXT_TYPE_PKEY,								\
+	.attr.key = ETHOSN_NPU_FW_CONTENT_CERT_KEY \
+}
+
+#define ETHOSN_NPU_FW_HASH_EXT_DEF {						\
+	.oid = ETHOSN_NPU_FW_BINARY_OID,					\
+	.opt = "npu-fw",							\
+	.help_msg = "Arm(R) Ethos(TM)-N NPU Firmware image file (input file)",	\
+	.sn = "NPUFirmwareHash",						\
+	.ln = "NPU Firmware Hash (SHA256)",					\
+	.asn1_type = V_ASN1_OCTET_STRING,					\
+	.type = EXT_TYPE_HASH \
+}
+
+/* NPU Keys */
+#define ETHOSN_NPU_FW_CONTENT_CERT_KEY_DEF {							  \
+	.id = ETHOSN_NPU_FW_CONTENT_CERT_KEY,							  \
+	.opt = "npu-fw-key",									  \
+	.help_msg = "Arm(R) Ethos(TM)-N NPU Firmware Content Certificate key (input/output file)",\
+	.desc = "NPU Firmware Content Certificate key"						  \
+}
+
+#endif  /* ETHOSN_CERT_H */
diff --git a/include/drivers/arm/ethosn_oid.h b/include/drivers/arm/ethosn_oid.h
new file mode 100644
index 0000000..a83cd09
--- /dev/null
+++ b/include/drivers/arm/ethosn_oid.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ETHOSN_OID_H
+#define ETHOSN_OID_H
+
+/* Arm(R) Ethos(TM)-N NPU Platform OID */
+#define ETHOSN_NPU_FW_CONTENT_CERT_PK_OID	"1.3.6.1.4.1.4128.2300.1"
+#define ETHOSN_NPU_FW_BINARY_OID		"1.3.6.1.4.1.4128.2300.2"
+
+#endif  /* ETHOSN_OID_H */