diff --git a/microdroid_manager/src/dice.rs b/microdroid_manager/src/dice.rs
index 88373d1..3a2a1e6 100644
--- a/microdroid_manager/src/dice.rs
+++ b/microdroid_manager/src/dice.rs
@@ -16,18 +16,17 @@
 
 use anyhow::{anyhow, bail, Context, Error, Result};
 use byteorder::{NativeEndian, ReadBytesExt};
+use ciborium::{cbor, ser};
 use diced_open_dice::{
     bcc_handover_parse, retry_bcc_main_flow, BccHandover, Config, DiceArtifacts, DiceMode, Hash,
     Hidden, InputValues, OwnedDiceArtifacts,
 };
-use diced_utils::cbor::{encode_header, encode_number};
 use keystore2_crypto::ZVec;
 use libc::{c_void, mmap, munmap, MAP_FAILED, MAP_PRIVATE, PROT_READ};
 use microdroid_metadata::PayloadMetadata;
 use openssl::hkdf::hkdf;
 use openssl::md::Md;
 use std::fs;
-use std::io::Write;
 use std::os::unix::io::AsRawFd;
 use std::path::{Path, PathBuf};
 use std::ptr::null_mut;
@@ -172,41 +171,24 @@
 ///   1: tstr // payload_binary_name
 /// }
 pub fn format_payload_config_descriptor(payload_metadata: &PayloadMetadata) -> Result<Vec<u8>> {
-    let mut config_descriptor = vec![
-        0xa2, // map(2)
-        0x3a, 0x00, 0x01, 0x11, 0x71, // -70002
-        0x72, 0x4d, 0x69, 0x63, 0x72, 0x6f, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x20, 0x70, 0x61, 0x79,
-        0x6c, 0x6f, 0x61, 0x64, // "Microdroid payload"
-    ];
+    const MICRODROID_PAYLOAD_COMPONENT_NAME: &str = "Microdroid payload";
 
-    match payload_metadata {
-        PayloadMetadata::config_path(payload_config_path) => {
-            encode_negative_number(-71000, &mut config_descriptor)?;
-            encode_tstr(payload_config_path, &mut config_descriptor)?;
-        }
-        PayloadMetadata::config(payload_config) => {
-            encode_negative_number(-71001, &mut config_descriptor)?;
-            encode_header(5, 1, &mut config_descriptor)?; // map(1)
-            encode_number(1, &mut config_descriptor)?;
-            encode_tstr(&payload_config.payload_binary_name, &mut config_descriptor)?;
-        }
+    let config_descriptor_cbor_value = match payload_metadata {
+        PayloadMetadata::config_path(payload_config_path) => cbor!({
+            -70002 => MICRODROID_PAYLOAD_COMPONENT_NAME,
+            -71000 => payload_config_path
+        }),
+        PayloadMetadata::config(payload_config) => cbor!({
+            -70002 => MICRODROID_PAYLOAD_COMPONENT_NAME,
+            -71001 => {1 => payload_config.payload_binary_name}
+        }),
     }
+    .context("Failed to build a CBOR Value from payload metadata")?;
+    let mut config_descriptor = Vec::new();
+    ser::into_writer(&config_descriptor_cbor_value, &mut config_descriptor)?;
     Ok(config_descriptor)
 }
 
-fn encode_tstr(tstr: &str, buffer: &mut Vec<u8>) -> Result<()> {
-    let bytes = tstr.as_bytes();
-    encode_header(3, bytes.len().try_into().unwrap(), buffer)?;
-    buffer.extend_from_slice(bytes);
-    Ok(())
-}
-
-fn encode_negative_number(n: i64, buffer: &mut dyn Write) -> Result<()> {
-    anyhow::ensure!(n < 0);
-    let n = -1 - n;
-    encode_header(1, n.try_into().unwrap(), buffer)
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;