How to specify the cipher when generating key using ssh-keygen

[Di Lin]

 Hi,
        Please help on this issue.
        I have found that there is no way to specify the cipher for Openssh  
cmd  'ssh-keygen'.
        And after my system upgrade ,the generated private key is ciphered with 
AES-128-CBC and this cause a lot of applications failed to analyse this key.
        if DES-EDE3-CBC is used to cipher the private key ,Is there any 
possible way?
 
        Please let me know your advice!
       Thank you very much!