diff --git a/include/rawrtc/dtls_parameters.h b/include/rawrtc/dtls_parameters.h
new file mode 100644
index 0000000..ba8df3f
--- /dev/null
+++ b/include/rawrtc/dtls_parameters.h
@@ -0,0 +1,38 @@
+#pragma once
+#include "dtls_transport.h"
+#include <rawrtcc/code.h>
+#include <re.h>
+
+// Dependencies
+struct rawrtc_dtls_fingerprint;
+struct rawrtc_dtls_fingerprints;
+
+/*
+ * DTLS parameters.
+ */
+struct rawrtc_dtls_parameters;
+
+/*
+ * Create a new DTLS parameters instance.
+ * `*parametersp` must be unreferenced.
+ */
+enum rawrtc_code rawrtc_dtls_parameters_create(
+    struct rawrtc_dtls_parameters** const parametersp,  // de-referenced
+    enum rawrtc_dtls_role const role,
+    struct rawrtc_dtls_fingerprint* const fingerprints[],  // referenced (each item)
+    size_t const n_fingerprints);
+
+/*
+ * Get the DTLS parameter's role value.
+ */
+enum rawrtc_code rawrtc_dtls_parameters_get_role(
+    enum rawrtc_dtls_role* rolep,  // de-referenced
+    struct rawrtc_dtls_parameters* const parameters);
+
+/*
+ * Get the DTLS parameter's fingerprint array.
+ * `*fingerprintsp` must be unreferenced.
+ */
+enum rawrtc_code rawrtc_dtls_parameters_get_fingerprints(
+    struct rawrtc_dtls_fingerprints** const fingerprintsp,  // de-referenced
+    struct rawrtc_dtls_parameters* const parameters);