diff --git a/lib/trng/trng.c b/lib/trng/trng.c
new file mode 100644
index 0000000..976d26e
--- /dev/null
+++ b/lib/trng/trng.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <debug.h>
+#include <drivers/arm/arm_gic.h>
+#include <irq.h>
+#include <platform.h>
+#include <trng.h>
+#include <sgi.h>
+#include <tftf.h>
+#include <tftf_lib.h>
+
+const trng_function_t trng_functions[TRNG_NUM_CALLS] = {
+	DEFINE_TRNG_FUNC(TRNG_VERSION, true),
+	DEFINE_TRNG_FUNC(TRNG_FEATURES, true),
+	DEFINE_TRNG_FUNC(TRNG_UUID, true),
+	DEFINE_TRNG_FUNC(TRNG_RND, true),
+};
+
+int32_t tftf_trng_version(void)
+{
+	smc_args args = { SMC_TRNG_VERSION };
+	smc_ret_values ret_vals;
+
+	ret_vals = tftf_smc(&args);
+	return ret_vals.ret0;
+}
+
+
+bool tftf_trng_feature_implemented(uint32_t id)
+{
+	smc_args args = {
+		SMC_TRNG_FEATURES,
+		id,
+	};
+	smc_ret_values ret_vals;
+
+	ret_vals = tftf_smc(&args);
+	return ret_vals.ret0 == TRNG_E_SUCCESS;
+}
+
+smc_ret_values tftf_trng_uuid(void)
+{
+	smc_args args = { SMC_TRNG_UUID };
+
+	return tftf_smc(&args);
+}
+
+smc_ret_values tftf_trng_rnd(uint32_t nbits)
+{
+	smc_args args = {
+		SMC_TRNG_RND,
+		nbits,
+	};
+
+	return tftf_smc(&args);
+}