fixup! fixup! fixup! fixup! feat: add support for ChaCha20/Poly1305 t…

…o COSE module

src/token/cose/encrypted/mod.rs

@@ -287,8 +287,8 @@ pub trait EncryptCryptoBackend: CryptoBackend {
     /// # Arguments
     ///
     /// * `key` - Symmetric key that should be used.
-    ///           Implementations may assume that the provided key has the right length for the
-    ///           provided algorithm, and panic if this is not the case.
+    ///           Implementations may assume that the provided key has the right length for
+    ///           ChaCha20/Poly1305 and panic if this is not the case.
     /// * `plaintext` - Data that should be encrypted.
     /// * `aad` - additional authenticated data that should be included in the calculation of the
     ///           authentication tag, but not encrypted.
@@ -333,8 +333,8 @@ pub trait EncryptCryptoBackend: CryptoBackend {
     /// # Arguments
     ///
     /// * `key` - Symmetric key that should be used.
-    ///           Implementations may assume that the provided key has the right length for the
-    ///           provided algorithm, and panic if this is not the case.
+    ///           Implementations may assume that the provided key has the right length for
+    ///           ChaCha20/Poly1305 and panic if this is not the case.
     /// * `ciphertext_with_tag` - The ciphertext that should be decrypted concatenated with the
     ///           authentication tag that should be verified (if valid, should be the output of a
     ///           previous encryption as specified in
@@ -404,7 +404,7 @@ fn try_encrypt<B: EncryptCryptoBackend, CKP: KeyProvider>(
         BTreeSet::from_iter(vec![KeyOperation::Assigned(iana::KeyOperation::Encrypt)]),
         |key, alg, protected, unprotected| {
             let parsed_key = CoseParsedKey::try_from(key)?;
-            // Check if this is a valid symmetric, determine IV.
+            // Check if this is a valid symmetric key, determine IV.
             let (symm_key, iv) =
                 determine_and_check_symmetric_params(alg, parsed_key, protected, unprotected)?;
             match alg {