Accept new key
===20===
decryptedMessageActionAcceptKey#6fe1735b exchange_id:long g_b:bytes key_fingerprint:long = DecryptedMessageAction;
| Name | Type | Description |
|---|---|---|
| exchange_id | long | Exchange ID |
| g_b | bytes | B parameter, see rekeying process |
| key_fingerprint | long | Key fingerprint, see rekeying process |