diff --git a/openssl-sys/src/object.rs b/openssl-sys/src/object.rs
index fbc459bca36c6b42d474b683fa9c98a7109980ba..99abdebc992b20c5184c1bf0b01dc3a4f62b896f 100644
--- a/openssl-sys/src/object.rs
+++ b/openssl-sys/src/object.rs
@@ -18,4 +18,8 @@ extern "C" {
         -> c_int;
     pub fn OBJ_sn2nid(sn: *const libc::c_char) -> libc::c_int;
     pub fn OBJ_txt2obj(s: *const libc::c_char, no_name: libc::c_int) -> *mut ASN1_OBJECT;
+    #[cfg(ossl111)]
+    pub fn OBJ_length(obj: *const ASN1_OBJECT) -> libc::size_t;
+    #[cfg(ossl111)]
+    pub fn OBJ_get0_data(obj: *const ASN1_OBJECT) -> *const c_uchar;
 }
diff --git a/openssl/src/asn1.rs b/openssl/src/asn1.rs
index 9c066c556c05d52324c41058b70217964954b7a8..5d7fd0fd6c884ba7a132241cec64594a8fd66bc9 100644
--- a/openssl/src/asn1.rs
+++ b/openssl/src/asn1.rs
@@ -626,6 +626,22 @@ impl Asn1Object {
             Ok(Asn1Object::from_ptr(obj))
         }
     }
+
+    /// Return the OID as an DER encoded array of bytes. This is the ASN.1
+    /// value, not including tag or length.
+    ///
+    /// This corresponds to [`OBJ_get0_data`].
+    ///
+    /// Requires OpenSSL 1.1.1 or newer.
+    ///
+    /// [`OBJ_get0_data`]: https://www.openssl.org/docs/man1.1.0/man3/OBJ_get0_data.html
+    #[cfg(ossl111)]
+    pub fn as_slice(&self) -> &[u8] {
+        unsafe {
+            let len = ffi::OBJ_length(self.as_ptr());
+            slice::from_raw_parts(ffi::OBJ_get0_data(self.as_ptr()), len)
+        }
+    }
 }
 
 impl Asn1ObjectRef {
@@ -765,4 +781,14 @@ mod tests {
             .map(|object| object.to_string())
             .expect_err("parsing invalid OID should fail");
     }
+
+    #[test]
+    #[cfg(ossl111)]
+    fn object_to_slice() {
+        let object = Asn1Object::from_str("2.16.840.1.101.3.4.2.1").unwrap();
+        assert_eq!(
+            object.as_slice(),
+            &[0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01],
+        );
+    }
 }