diff --git a/proposals/xxxx-sas-v2.md b/proposals/xxxx-sas-v2.md
index b4652ff8..0e689c30 100644
--- a/proposals/xxxx-sas-v2.md
+++ b/proposals/xxxx-sas-v2.md
@@ -21,25 +21,11 @@ concatenation of:
     which sent the `m.key.verification.accept` message, followed by `|`.
   * The `transaction_id` being used.
 
-A new `message_authentication_code` method, `hkdf-hmac-sha256.v2` is introduced.  It
-is the same as `hkdf-hmac-sha256`, except that the info parameter for the HKDF
-is the concatenation of:
+The differences from `curve25519` are the addition of the public keys, and the
+addition of `|` as delimiter between the fields.
 
-  * The string `MATRIX_KEY_VERIFICATION_MAC|`.
-  * The Matrix ID of the user whose key is being MAC-ed, followed by `|`.
-  * The Device ID of the device sending the MAC, followed by `|`.
-  * The Matrix ID of the other user, followed by `|`.
-  * The Device ID of the device receiving the MAC, followed by `|`.
-  * The transaction_id being used, followed by `|`.
-  * The Key ID of the key being MAC-ed, or the string `KEY_IDS` if the item
-    being MAC-ed is the list of key IDs.
-
-A new `short_authentication_string` method, `emoji.v2` is introduced.  It is
-the same as `emoji`, but emoji number 34 is changed from 🔧 (`U+1F527` Spanner)
-to ⭐ (`U+2B50` Star).
-
-The `key_agreement_protocol` `curve25519`, `message_authentication_code`
-`hkdf-hmac-sha256`, and `short_authentication_string` `emoji` are deprecated.
+The `key_agreement_protocol` `curve25519` is deprecated and may be removed in
+the future.
 
 ## Potential issues