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Date:	Thu, 3 Sep 2015 14:57:28 +0900
Message-ID:	<CABs5vS5ipP2R1ZHM8=5RC4Gv7Bww+c3-_8ng9tUvd9AswXzgLA@mail.gmail.com>
Subject:	Re: Every time I run ssh, ssh prompts "password:" with latest OpenSSH package.
From:	Hiroyuki Kurokawa <kurokawh AT gmail DOT com>
To:	cygwin AT cygwin DOT com
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id t835vhII022282

Hi Andrey,

> This is not the right solution. Right solution would be to change your keys.
> While DSA keys aren't inherently insecure (quite opposite), FIPS compliant
> systems enforce DSA key length to 1024 bits, which is considered to be weak
> nowadays. You CAN use longer DSA keys, but not all systems support it.

I created a new 2048-bit RSA key and confirmed that ssh works fine with
this key & latest OpenSSH package without PubkeyAcceptedKeyTypes configuration.

Thanks,
Hiroyuki Kurokawa


2015-09-03 12:48 GMT+09:00 Andrey Repin <anrdaemon AT yandex DOT ru>:
> Greetings, Hiroyuki Kurokawa!
>
>> Thanks Andrey for reply to my question.
>
>> George gave me an advice by a direct mail.
>> And his instruction solve my problem.
>
>>> If you use dsa key type, you need to add to your ssh client configuration file, either ~/.ssh/config or /etc/ssh_config, the following parameter:
>>>
>>> PubkeyAcceptedKeyTypes +ssh-dss
>>>
>>> If you use some other key type, then 'ssh -Q key' will list all supported key types, pick the right one and put it into config file instead of ssh-dss.
>>>
>>> I had the same problem after the last ssh upgrade.
>
>> Now the latest ssh works fine with ~/.ssh/config which contains
>> "PubkeyAcceptedKeyTypes +ssh-dss" because a type of my key is DSA.
>
>> I appreciate George so much.
>
> This is not the right solution. Right solution would be to change your keys.
> While DSA keys aren't inherently insecure (quite opposite), FIPS compliant
> systems enforce DSA key length to 1024 bits, which is considered to be weak
> nowadays. You CAN use longer DSA keys, but not all systems support it.
>
>
> --
> With best regards,
> Andrey Repin
> Thursday, September 3, 2015 06:46:29
>
> Sorry for my terrible english...
>



-- 
黒川裕之
kurokawh AT gmail DOT com

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