diff --git a/pvmfw/avb/src/error.rs b/pvmfw/avb/src/error.rs
index 8b06150..674e5a7 100644
--- a/pvmfw/avb/src/error.rs
+++ b/pvmfw/avb/src/error.rs
@@ -12,9 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! This module contains the error thrown by the payload verification API.
+//! This module contains the error thrown by the payload verification API
+//! and other errors used in the library.
 
-use avb_bindgen::AvbSlotVerifyResult;
+use avb_bindgen::{AvbIOResult, AvbSlotVerifyResult};
 
 use core::fmt;
 
@@ -85,3 +86,44 @@
         }
     }
 }
+
+#[derive(Debug)]
+pub(crate) enum AvbIOError {
+    /// AVB_IO_RESULT_ERROR_OOM,
+    #[allow(dead_code)]
+    Oom,
+    /// AVB_IO_RESULT_ERROR_IO,
+    #[allow(dead_code)]
+    Io,
+    /// AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION,
+    NoSuchPartition,
+    /// AVB_IO_RESULT_ERROR_RANGE_OUTSIDE_PARTITION,
+    RangeOutsidePartition,
+    /// AVB_IO_RESULT_ERROR_NO_SUCH_VALUE,
+    NoSuchValue,
+    /// AVB_IO_RESULT_ERROR_INVALID_VALUE_SIZE,
+    InvalidValueSize,
+    /// AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE,
+    #[allow(dead_code)]
+    InsufficientSpace,
+}
+
+impl From<AvbIOError> for AvbIOResult {
+    fn from(error: AvbIOError) -> Self {
+        match error {
+            AvbIOError::Oom => AvbIOResult::AVB_IO_RESULT_ERROR_OOM,
+            AvbIOError::Io => AvbIOResult::AVB_IO_RESULT_ERROR_IO,
+            AvbIOError::NoSuchPartition => AvbIOResult::AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION,
+            AvbIOError::RangeOutsidePartition => {
+                AvbIOResult::AVB_IO_RESULT_ERROR_RANGE_OUTSIDE_PARTITION
+            }
+            AvbIOError::NoSuchValue => AvbIOResult::AVB_IO_RESULT_ERROR_NO_SUCH_VALUE,
+            AvbIOError::InvalidValueSize => AvbIOResult::AVB_IO_RESULT_ERROR_INVALID_VALUE_SIZE,
+            AvbIOError::InsufficientSpace => AvbIOResult::AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE,
+        }
+    }
+}
+
+pub(crate) fn to_avb_io_result(result: Result<(), AvbIOError>) -> AvbIOResult {
+    result.map_or_else(|e| e.into(), |_| AvbIOResult::AVB_IO_RESULT_OK)
+}
diff --git a/pvmfw/avb/src/verify.rs b/pvmfw/avb/src/verify.rs
index ea6a20d..b67f189 100644
--- a/pvmfw/avb/src/verify.rs
+++ b/pvmfw/avb/src/verify.rs
@@ -14,7 +14,9 @@
 
 //! This module handles the pvmfw payload verification.
 
-use crate::error::{slot_verify_result_to_verify_payload_result, AvbSlotVerifyError};
+use crate::error::{
+    slot_verify_result_to_verify_payload_result, to_avb_io_result, AvbIOError, AvbSlotVerifyError,
+};
 use avb_bindgen::{
     avb_descriptor_foreach, avb_hash_descriptor_validate_and_byteswap, avb_slot_verify,
     avb_slot_verify_data_free, AvbDescriptor, AvbHashDescriptor, AvbHashtreeErrorMode, AvbIOResult,
@@ -29,47 +31,6 @@
 
 const NULL_BYTE: &[u8] = b"\0";
 
-#[derive(Debug)]
-enum AvbIOError {
-    /// AVB_IO_RESULT_ERROR_OOM,
-    #[allow(dead_code)]
-    Oom,
-    /// AVB_IO_RESULT_ERROR_IO,
-    #[allow(dead_code)]
-    Io,
-    /// AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION,
-    NoSuchPartition,
-    /// AVB_IO_RESULT_ERROR_RANGE_OUTSIDE_PARTITION,
-    RangeOutsidePartition,
-    /// AVB_IO_RESULT_ERROR_NO_SUCH_VALUE,
-    NoSuchValue,
-    /// AVB_IO_RESULT_ERROR_INVALID_VALUE_SIZE,
-    InvalidValueSize,
-    /// AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE,
-    #[allow(dead_code)]
-    InsufficientSpace,
-}
-
-impl From<AvbIOError> for AvbIOResult {
-    fn from(error: AvbIOError) -> Self {
-        match error {
-            AvbIOError::Oom => AvbIOResult::AVB_IO_RESULT_ERROR_OOM,
-            AvbIOError::Io => AvbIOResult::AVB_IO_RESULT_ERROR_IO,
-            AvbIOError::NoSuchPartition => AvbIOResult::AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION,
-            AvbIOError::RangeOutsidePartition => {
-                AvbIOResult::AVB_IO_RESULT_ERROR_RANGE_OUTSIDE_PARTITION
-            }
-            AvbIOError::NoSuchValue => AvbIOResult::AVB_IO_RESULT_ERROR_NO_SUCH_VALUE,
-            AvbIOError::InvalidValueSize => AvbIOResult::AVB_IO_RESULT_ERROR_INVALID_VALUE_SIZE,
-            AvbIOError::InsufficientSpace => AvbIOResult::AVB_IO_RESULT_ERROR_INSUFFICIENT_SPACE,
-        }
-    }
-}
-
-fn to_avb_io_result(result: Result<(), AvbIOError>) -> AvbIOResult {
-    result.map_or_else(|e| e.into(), |_| AvbIOResult::AVB_IO_RESULT_OK)
-}
-
 extern "C" fn read_is_device_unlocked(
     _ops: *mut AvbOps,
     out_is_unlocked: *mut bool,