remove Seal from crypto

the trait doesn't leave the module, so sealing doesn't do anything useful.

1 files changed, 1 insertions, 10 deletions

diff --git a/src/crypto.rs b/src/crypto.rs
index 2063c9b..58ab6d2 100644
--- a/src/crypto.rs
+++ b/src/crypto.rs
@@ -40,16 +40,7 @@ mod from_hkdf {
     use hkdf::Hkdf;
     use sha2::Sha256;
 
-    // sealing lets us guarantee that SIZE is always correct,
-    // which means that from_hkdf always receives correctly sized slices
-    // and copies never fail
-    mod private {
-        pub trait Seal {}
-        impl<const N: usize> Seal for [u8; N] {}
-        impl<L: Seal, R: Seal> Seal for (L, R) {}
-    }
-
-    pub trait FromHkdf: private::Seal {
+    pub trait FromHkdf {
         const SIZE: usize;
         fn from_hkdf(bytes: &[u8]) -> Self;
     }