keystore.xml can not find the client_static_keypair_pwd_enc

when i cat /data/data/com.whatsapp/shared_prefs/keystore.xml the data is <?xml version='1.0' encoding='utf-8' standalone='yes' ?> <map> <long name="client_static_keypair_enc_success" value="2279" /> <boolean name="can_user_android_key_store" value="true" /> <string name="client_static_keypair_enc">[0,&quot;\/CrF0JH9eAAAVFiMzl74aLWSaYaH8x\/96gm2vfCIzqYjo+rME1+u8h6YZA4m80p5N+knS4LSbyiio4ccNtyK1wFHPGvnmBHg3FRecZHp44c&quot;,&quot;3IE0ygCVv7pRQ0zw&quot;]</string> <string name="server_static_public">6pUjZVpq/lKVxMu9gaYv71aGizzvaYfafcO/pMAQQgk</string> </map> i can not find the client_static_keypair_pwd_enc

my whatsapp version is android 2.24.15.77,anyone can help me?