openpgp: Don't check subpacket area length when parsing.

  - Previously, we checked that the subpacket area fits a v4 signature
    when parsing.  However, the subpacket area size depends on the
    packet version, and our SubpacketArea is independent of the
    signature version.

  - The size will be checked when serializing the signatures.  It is
    not useful to check them when parsing the signatures.

1 files changed, 1 insertions, 7 deletions

diff --git a/openpgp/src/packet/signature/subpacket.rs b/openpgp/src/packet/signature/subpacket.rs
index d36755de..e2c8e73a 100644
--- a/openpgp/src/packet/signature/subpacket.rs
+++ b/openpgp/src/packet/signature/subpacket.rs
@@ -673,13 +673,7 @@ impl SubpacketArea {
             packets,
             parsed: Mutex::new(RefCell::new(None)),
         };
-        if area.serialized_len() > std::u16::MAX as usize {
-            Err(Error::InvalidArgument(
-                format!("Subpacket area exceeds maximum size: {}",
-                        area.serialized_len())).into())
-        } else {
-            Ok(area)
-        }
+        Ok(area)
     }
 
     // Initialize `Signature::hashed_area_parsed` from