diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
index 6837a2f..5b34572 100644
--- a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
@@ -40,10 +40,14 @@
   android.hardware.security.see.hwcrypto.IOpaqueKey importClearKey(in android.hardware.security.see.hwcrypto.types.ExplicitKeyMaterial keyMaterial, in android.hardware.security.see.hwcrypto.KeyPolicy newKeyPolicy);
   byte[] getCurrentDicePolicy();
   android.hardware.security.see.hwcrypto.IOpaqueKey keyTokenImport(in android.hardware.security.see.hwcrypto.types.OpaqueKeyToken requestedKey, in byte[] sealingDicePolicy);
+  android.hardware.security.see.hwcrypto.IOpaqueKey getKeyslotData(android.hardware.security.see.hwcrypto.IHwCryptoKey.KeySlot slotId);
   enum DeviceKeyId {
     DEVICE_BOUND_KEY,
     BATCH_KEY,
   }
+  enum KeySlot {
+    KEYMINT_SHARED_HMAC_KEY,
+  }
   union DiceBoundDerivationKey {
     android.hardware.security.see.hwcrypto.IOpaqueKey opaqueKey;
     android.hardware.security.see.hwcrypto.IHwCryptoKey.DeviceKeyId keyId;
diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl
index cd8b3c6..742314c 100644
--- a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl
@@ -41,4 +41,5 @@
   const int ALLOCATION_ERROR = (-5) /* -5 */;
   const int INVALID_KEY = (-6) /* -6 */;
   const int BAD_PARAMETER = (-7) /* -7 */;
+  const int UNAUTHORIZED = (-8) /* -8 */;
 }
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
index e472f4c..bb194a3 100644
--- a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
@@ -37,6 +37,19 @@
         DEVICE_BOUND_KEY,
         BATCH_KEY,
     }
+
+    /*
+     * Identifier for the requested key slot. The currently supported identifiers are:
+     *
+     * KEYMINT_SHARED_HMAC_KEY:
+     *      This is the shared HMAC key that will now be computed by HwCryptoKey after participating
+     *      in the ISharedSecret protocol that can be shared with KeyMint and authenticators. See
+     *      ISharedSecret.aidl for more information.
+     */
+    enum KeySlot {
+        KEYMINT_SHARED_HMAC_KEY,
+    }
+
     union DiceBoundDerivationKey {
         /*
          * Opaque to be used to derive the DICE bound key.
@@ -256,4 +269,21 @@
      *      success, service specific error based on <code>HalErrorCode</code> otherwise.
      */
     IOpaqueKey keyTokenImport(in OpaqueKeyToken requestedKey, in byte[] sealingDicePolicy);
+
+    /*
+     * getKeyslotData() - Gets the keyslot key material referenced by slotId.
+     *
+     * @slotId:
+     *      Identifier for the requested keyslot
+     *
+     * This interface is used to access device specific keys with known types and uses. Because the
+     * returned key is opaque, it can only be used through the different HwCrypto interfaces.
+     * Because the keys live in a global namespace the identity of the caller needs to be
+     * checked to verify that it has permission to accesses the requested key.
+     *
+     * Return:
+     *      Ok(IOpaqueKey) on success, UNAUTHORIZED if the caller cannot access the requested key,
+     *      another specific error code otherwise.
+     */
+    IOpaqueKey getKeyslotData(KeySlot slotId);
 }
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl
index e8e8539..f536c0e 100644
--- a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/HalErrorCode.aidl
@@ -42,4 +42,7 @@
 
     /* Bad parameter supplied for the desired operation */
     const int BAD_PARAMETER = -7;
+
+    /* Caller is not authorized to make this call */
+    const int UNAUTHORIZED = -8;
 }