> This is why advanced protocols like Signal use more techniques such as the double ratchet or ephemeral key bundles to provide strong security guarantees, such as protection against replay attacks.
Just to clarify: you only get replay protection when you compose ephemeral key bundles with the double ratcheting scheme. Neither provides it on their own.
> This is why advanced protocols like Signal use more techniques such as the double ratchet or ephemeral key bundles to provide strong security guarantees, such as protection against replay attacks.
Just to clarify: you only get replay protection when you compose ephemeral key bundles with the double ratcheting scheme. Neither provides it on their own.