diff --git a/apkverify/src/lib.rs b/apkverify/src/lib.rs
index f75913c..71ea857 100644
--- a/apkverify/src/lib.rs
+++ b/apkverify/src/lib.rs
@@ -26,8 +26,14 @@
 use anyhow::Result;
 use std::path::Path;
 
-/// Verifies APK/APEX signing with v2/v3 scheme
-pub fn verify<P: AsRef<Path>>(path: P) -> Result<()> {
+/// Verifies APK/APEX signing with v2/v3 scheme. On success, the public key (in DER format) is
+/// returned.
+pub fn verify<P: AsRef<Path>>(path: P) -> Result<Box<[u8]>> {
     // TODO(jooyung) fallback to v2 when v3 not found
     v3::verify(path)
 }
+
+/// Gets the public key (in DER format) that was used to sign the given APK/APEX file
+pub fn get_public_key_der<P: AsRef<Path>>(path: P) -> Result<Box<[u8]>> {
+    v3::get_public_key_der(path)
+}