diff --git a/libs/dice/open_dice/Android.bp b/libs/dice/open_dice/Android.bp
index d1129fb..b3cb651 100644
--- a/libs/dice/open_dice/Android.bp
+++ b/libs/dice/open_dice/Android.bp
@@ -14,6 +14,7 @@
     name: "libdiced_open_dice_nostd",
     defaults: ["libdiced_open_dice_defaults"],
     rustlibs: [
+        "libcoset_nostd",
         "libopen_dice_android_bindgen_nostd",
         "libopen_dice_cbor_bindgen_nostd",
         "libzeroize_nostd",
@@ -35,6 +36,7 @@
     host_supported: true,
     vendor_available: true,
     rustlibs: [
+        "libcoset",
         "libopen_dice_android_bindgen",
         "libopen_dice_cbor_bindgen",
         "libserde",
@@ -157,7 +159,6 @@
         "--allowlist-var=DICE_PUBLIC_KEY_SIZE",
         "--allowlist-var=DICE_PRIVATE_KEY_SIZE",
         "--allowlist-var=DICE_SIGNATURE_SIZE",
-        "--allowlist-var=DICE_COSE_KEY_ALG_VALUE",
     ],
 }
 
diff --git a/libs/dice/open_dice/src/dice.rs b/libs/dice/open_dice/src/dice.rs
index e330e00..325a2b1 100644
--- a/libs/dice/open_dice/src/dice.rs
+++ b/libs/dice/open_dice/src/dice.rs
@@ -16,6 +16,7 @@
 //! This module mirrors the content in open-dice/include/dice/dice.h
 
 use crate::error::{check_result, Result};
+use coset::iana;
 pub use open_dice_cbor_bindgen::DiceMode;
 use open_dice_cbor_bindgen::{
     DiceConfigType, DiceDeriveCdiCertificateId, DiceDeriveCdiPrivateKeySeed, DiceInputValues,
@@ -62,6 +63,37 @@
 /// Array type of DICE ID.
 pub type DiceId = [u8; ID_SIZE];
 
+/// Key algorithm used for DICE.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum KeyAlgorithm {
+    /// Ed25519.
+    Ed25519,
+    /// ECDSA using P-256 curve.
+    EcdsaP256,
+    /// ECDSA using P-384 curve.
+    EcdsaP384,
+}
+
+impl From<KeyAlgorithm> for iana::Algorithm {
+    fn from(alg: KeyAlgorithm) -> Self {
+        match alg {
+            KeyAlgorithm::Ed25519 => iana::Algorithm::EdDSA,
+            KeyAlgorithm::EcdsaP256 => iana::Algorithm::ES256,
+            KeyAlgorithm::EcdsaP384 => iana::Algorithm::ES384,
+        }
+    }
+}
+
+/// Key algorithm used within different components in VMs.
+///
+/// This algorithm serves two primary purposes:
+///
+/// * **pvmfw Handover:** In pvmfw, a vendor DICE chain, potentially using various algorithms, is
+///   transitioned to this specific algorithm.
+/// * **Post-Handover Consistency:** In components following pvmfw (e.g., the Microdroid OS), this
+///   algorithm is used consistently for both the authority and subject keys in DICE derivation.
+pub const VM_KEY_ALGORITHM: KeyAlgorithm = KeyAlgorithm::Ed25519;
+
 /// A trait for types that represent Dice artifacts, which include:
 ///
 /// - Attestation CDI
diff --git a/libs/dice/open_dice/src/lib.rs b/libs/dice/open_dice/src/lib.rs
index 085a2cd..16c2b96 100644
--- a/libs/dice/open_dice/src/lib.rs
+++ b/libs/dice/open_dice/src/lib.rs
@@ -36,14 +36,11 @@
 };
 pub use dice::{
     derive_cdi_certificate_id, derive_cdi_private_key_seed, dice_main_flow, Cdi, CdiValues, Config,
-    DiceArtifacts, DiceMode, Hash, Hidden, InlineConfig, InputValues, PrivateKey, PrivateKeySeed,
-    PublicKey, Signature, CDI_SIZE, HASH_SIZE, HIDDEN_SIZE, ID_SIZE, PRIVATE_KEY_SEED_SIZE,
+    DiceArtifacts, DiceMode, Hash, Hidden, InlineConfig, InputValues, KeyAlgorithm, PrivateKey,
+    PrivateKeySeed, PublicKey, Signature, CDI_SIZE, HASH_SIZE, HIDDEN_SIZE, ID_SIZE,
+    PRIVATE_KEY_SEED_SIZE, VM_KEY_ALGORITHM,
 };
 pub use error::{DiceError, Result};
-// Currently, open-dice library only supports a single signing and verification algorithm.
-// The value of DICE_COSE_KEY_ALG_VALUE depends on the algorithm chosen by the underlying C
-// library at build time. Refer to b/342333212 for more information.
-pub use open_dice_cbor_bindgen::DICE_COSE_KEY_ALG_VALUE;
 pub use ops::{
     derive_cdi_leaf_priv, generate_certificate, hash, kdf, keypair_from_seed, sign, verify,
 };