diff --git a/libs/cborutil/src/lib.rs b/libs/cborutil/src/lib.rs
index 4d308c1..b218c82 100644
--- a/libs/cborutil/src/lib.rs
+++ b/libs/cborutil/src/lib.rs
@@ -21,7 +21,10 @@
 use alloc::string::String;
 use alloc::vec::Vec;
 use ciborium::value::{Integer, Value};
-use coset::{CborSerializable, CoseError, CoseKey, Label, Result};
+use coset::{
+    iana::{self, EnumI64},
+    CborSerializable, CoseError, CoseKey, Label, Result,
+};
 use log::error;
 use serde::{de::DeserializeOwned, Serialize};
 
@@ -132,3 +135,19 @@
         .ok_or(CoseError::UnexpectedItem("", "Label not found in CoseKey"))?
         .1)
 }
+
+/// Converts the provided COSE key algorithm integer to an `iana::Algorithm` used
+/// by DICE chains.
+pub fn dice_cose_key_alg(cose_key_alg: i32) -> Result<iana::Algorithm> {
+    let key_alg = iana::Algorithm::from_i64(cose_key_alg as i64).ok_or_else(|| {
+        error!("Unsupported COSE key algorithm for DICE: {cose_key_alg}");
+        CoseError::UnexpectedItem("COSE key algorithm", "")
+    })?;
+    match key_alg {
+        iana::Algorithm::EdDSA | iana::Algorithm::ES256 | iana::Algorithm::ES384 => Ok(key_alg),
+        _ => {
+            error!("Unsupported COSE key algorithm for DICE: {key_alg:?}");
+            Err(CoseError::UnexpectedItem("-8, -7 or -35", ""))
+        }
+    }
+}