RSA private key file created with Windows10

[Imazu Setsuo]

Thank you immediately answer.

PKCS8, PEM, and RFC4716 formats were created and tested with the ssh-keygen command.

PKCS8 and PEM formatting was successful.

RFC4716 is the default on Windows10, and PEM is the default on CentOS7.

Does OpenSSL have any plans to support RFC4716 format in the future?

best regards, thank you
Setsuo Imazu

On 2022/10/05 15:36, Tomas Mraz wrote:
> Hello,
> most probably the key is stored in the OpenSSH private key format.
> You'll need to use ssh-keygen -p -m PKCS8 to convert the key into a
> format that OpenSSL can read.
> 
> Tomas Mraz, OpenSSL
> 
> On Wed, 2022-10-05 at 15:00 +0900, Imazu Setsuo wrote:
>> Hello.
>>
>> When I read the RSA private key file created with the ssh-keygen
>> command that comes with Windows 10 with the PEM_read_PrivateKey()
>> function, the following error occurred.
>>
>> error: 0906D06C: lib(9): func(109): reason(108)
>>
>> The platform is CentOS7, OpenSSL 3.0.5.
>> Is the private key file created with Windows 10 not supported?
>> How can I use the private key file created in Windows 10 as well?
>>
>>
>> best regards, thank you
>> Setsuo Imazu
>