Specify that the _given_ public keys are invalid

README.md

@@ -50,15 +50,15 @@ into a key pair suitable for operations which accept key pairs generated by
 `nacl.box.keyPair`. This function is a combination of `convertPublicKey`
 and `convertSecretKey`.
 
-Returns `null` if the public key in the key pair is not a valid
+Returns `null` if the public key in the given key pair is not a valid
 Ed25519 public key.
 
 ### ed2curve.convertPublicKey(edPublicKey) -> curvePublicKey | null
 
 Converts a 32-byte Ed25519 public key into a 32-byte Curve25519 public key
 and returns it.
 
-Returns `null` if the public key in not a valid Ed25519 public key.
+Returns `null` if the given public key in not a valid Ed25519 public key.
 
 ### ed2curve.convertSecretKey(edSecretKey) -> curveSecretKey