support aead_xchacha20_poly1305_rtpsize

Author: NeloBlivion

discord/types/voice.py

@@ -32,7 +32,7 @@
 from .snowflake import Snowflake
 
 SupportedModes = Literal[
-    "xsalsa20_poly1305_lite", "xsalsa20_poly1305_suffix", "xsalsa20_poly1305"
+    "xsalsa20_poly1305_lite", "xsalsa20_poly1305_suffix", "xsalsa20_poly1305", "aead_xchacha20_poly1305_rtpsize"
 ]
 
 

discord/voice_client.py

@@ -270,6 +270,7 @@ def __init__(self, client: Client, channel: abc.Connectable):
         "xsalsa20_poly1305_lite",
         "xsalsa20_poly1305_suffix",
         "xsalsa20_poly1305",
+        "aead_xchacha20_poly1305_rtpsize",
     )
 
     @property
@@ -564,19 +565,22 @@ def _get_voice_packet(self, data):
         return encrypt_packet(header, data)
 
     def _encrypt_xsalsa20_poly1305(self, header: bytes, data) -> bytes:
+        # Deprecated, remove in 2.7
         box = nacl.secret.SecretBox(bytes(self.secret_key))
         nonce = bytearray(24)
         nonce[:12] = header
 
         return header + box.encrypt(bytes(data), bytes(nonce)).ciphertext
 
     def _encrypt_xsalsa20_poly1305_suffix(self, header: bytes, data) -> bytes:
+        # Deprecated, remove in 2.7
         box = nacl.secret.SecretBox(bytes(self.secret_key))
         nonce = nacl.utils.random(nacl.secret.SecretBox.NONCE_SIZE)
 
         return header + box.encrypt(bytes(data), nonce).ciphertext + nonce
 
     def _encrypt_xsalsa20_poly1305_lite(self, header: bytes, data) -> bytes:
+        # Deprecated, remove in 2.7
         box = nacl.secret.SecretBox(bytes(self.secret_key))
         nonce = bytearray(24)
 
@@ -585,7 +589,18 @@ def _encrypt_xsalsa20_poly1305_lite(self, header: bytes, data) -> bytes:
 
         return header + box.encrypt(bytes(data), bytes(nonce)).ciphertext + nonce[:4]
 
+    def _encrypt_aead_xchacha20_poly1305_rtpsize(self, header: bytes, data) -> bytes:
+        # Required as of Nov 18 2024
+        box = nacl.secret.Aead(bytes(self.secret_key))
+        nonce = bytearray(24)
+
+        nonce[:4] = struct.pack('>I', self._lite_nonce)
+        self.checked_add('_lite_nonce', 1, 4294967295)
+
+        return header + box.encrypt(bytes(data), bytes(header), bytes(nonce)).ciphertext + nonce[:4]
+
     def _decrypt_xsalsa20_poly1305(self, header, data):
+        # Deprecated, remove in 2.7
         box = nacl.secret.SecretBox(bytes(self.secret_key))
 
         nonce = bytearray(24)
@@ -594,6 +609,7 @@ def _decrypt_xsalsa20_poly1305(self, header, data):
         return self.strip_header_ext(box.decrypt(bytes(data), bytes(nonce)))
 
     def _decrypt_xsalsa20_poly1305_suffix(self, header, data):
+        # Deprecated, remove in 2.7
         box = nacl.secret.SecretBox(bytes(self.secret_key))
 
         nonce_size = nacl.secret.SecretBox.NONCE_SIZE
@@ -602,6 +618,7 @@ def _decrypt_xsalsa20_poly1305_suffix(self, header, data):
         return self.strip_header_ext(box.decrypt(bytes(data[:-nonce_size]), nonce))
 
     def _decrypt_xsalsa20_poly1305_lite(self, header, data):
+        # Deprecated, remove in 2.7
         box = nacl.secret.SecretBox(bytes(self.secret_key))
 
         nonce = bytearray(24)
@@ -610,6 +627,16 @@ def _decrypt_xsalsa20_poly1305_lite(self, header, data):
 
         return self.strip_header_ext(box.decrypt(bytes(data), bytes(nonce)))
 
+    def _decrypt_aead_xchacha20_poly1305_rtpsize(self, header, data):
+        # Required as of Nov 18 2024
+        box = nacl.secret.Aead(bytes(self.secret_key))
+
+        nonce = bytearray(24)
+        nonce[:4] = data[-4:]
+        data = data[:-4]
+
+        return self.strip_header_ext(box.decrypt(bytes(data), bytes(header), bytes(nonce)))
+
     @staticmethod
     def strip_header_ext(data):
         if data[0] == 0xBE and data[1] == 0xDE and len(data) > 4: