1 files changed, 12 insertions, 0 deletions
diff --git a/openpgp/src/types/mod.rs b/openpgp/src/types/mod.rs
index 01ada8f7..ac6811d5 100644
--- a/openpgp/src/types/mod.rs
+++ b/openpgp/src/types/mod.rs
@@ -21,6 +21,18 @@ pub use self::server_preferences::KeyServerPreferences;
 mod timestamp;
 pub use timestamp::{Timestamp, Duration};
 
+/// Removes padding bytes from bitfields.
+///
+/// Returns the size of the original bitfield, i.e. the number of
+/// bytes the output has to be padded to when serialized.
+pub(crate) fn bitfield_remove_padding(b: &mut Vec<u8>) -> usize {
+    let pad_to = b.len();
+    while b.last() == Some(&0) {
+        b.pop();
+    }
+    pad_to
+}
+
 /// The OpenPGP public key algorithms as defined in [Section 9.1 of
 /// RFC 4880], and [Section 5 of RFC 6637].
 ///