Keychat reuses the DH ratchet to update the receiving address. Suppose Alice and Bob are chatting using Keychat; only they know the receiving addresses generated by the DH ratchet, which allows them to track who is who.
Keychat reuses the DH ratchet to update the receiving address. Suppose Alice and Bob are chatting using Keychat; only they know the receiving addresses generated by the DH ratchet, which allows them to track who is who.