fix(ext/node): ed25519 signing and cipheriv autopadding fixes (#24957)

- Return auth tag for GCM ciphers from auto padding shortcircuit
- Use _ring_ for ed25519 signing

---------

Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/ext/node/ops/crypto/cipher.rs b/ext/node/ops/crypto/cipher.rs
index 0c1218d31..ca13fdcd8 100644
--- a/ext/node/ops/crypto/cipher.rs
+++ b/ext/node/ops/crypto/cipher.rs
@@ -64,6 +64,10 @@ impl CipherContext {
     self.cipher.borrow_mut().encrypt(input, output);
   }
 
+  pub fn take_tag(self) -> Tag {
+    Rc::try_unwrap(self.cipher).ok()?.into_inner().take_tag()
+  }
+
   pub fn r#final(
     self,
     auto_pad: bool,
@@ -290,6 +294,15 @@ impl Cipher {
       }
     }
   }
+
+  fn take_tag(self) -> Tag {
+    use Cipher::*;
+    match self {
+      Aes128Gcm(cipher) => Some(cipher.finish().to_vec()),
+      Aes256Gcm(cipher) => Some(cipher.finish().to_vec()),
+      _ => None,
+    }
+  }
 }
 
 impl Decipher {