+#[repr(C)]
+#[derive(Clone)]
+/// Represents a secp256k1 signature serialized as two 32-byte numbers as well as a tag which
+/// allows recovering the exact public key which created the signature given the message.
+pub struct RecoverableSignature {
+ /// The bytes of the signature in "compact" form plus a "Recovery ID" which allows for
+ /// recovery.
+ pub serialized_form: [u8; 68],
+}
+impl RecoverableSignature {
+ pub(crate) fn from_rust(pk: &SecpRecoverableSignature) -> Self {
+ let (id, compact_form) = pk.serialize_compact();
+ let mut serialized_form = [0; 68];
+ serialized_form[0..64].copy_from_slice(&compact_form[..]);
+ serialized_form[64..].copy_from_slice(&id.to_i32().to_le_bytes());
+ Self { serialized_form }
+ }
+ pub(crate) fn into_rust(&self) -> SecpRecoverableSignature {
+ let mut id = [0; 4];
+ id.copy_from_slice(&self.serialized_form[64..]);
+ SecpRecoverableSignature::from_compact(&self.serialized_form[0..64],
+ RecoveryId::from_i32(i32::from_le_bytes(id)).expect("Invalid Recovery ID"))
+ .unwrap()
+ }
+}
+