SSH Authentication failed!

[chmmeng]

 when I login to the remote linux server from win10 by yubikey‘ s gpg applet. It failed occasionally  and sometimes successed!  I think the signature is not verfied by ssh service,

The ssh error as below:

Nov 28 09:36:15 kms sshd[3507]: error: ssh_rsa_verify: len 513 > modlen 256 Nov 28 09:36:15 kms sshd[3508]: Received disconnect from 192.168.0.176: 14: No supported authentication methods available Nov 28 09:36:23 kms sshd[3513]: error: ssh_rsa_verify: len 513 > modlen 256 Nov 28 09:36:15 kms sshd[3508]: Received disconnect from 192.168.0.176: 14: No supported authentication methods available

The attachment is putty’s error !

Any help,greatly appreciated.Thanks.