On 13/10/14 12:12, Angelos Ching wrote:
Hi,
Can I always expect the following commands, when given the same
private key, to generate the same public key albeit in different format?
# ssh-keygen -y -f id_rsa
# ssh-keygen -e -f id_rsa
Both commands are defined as outputting the public key for id_rsa, so yes.
Otherwise, it's a bug.
Because I'm dealing with one private key that is generating different
public key when the above commands were executed.
How are you detecting that it is a different public key?
-e by default uses RFC4716, so other than the wrapping, it should be the
same content.
You should be able to go from -e format to -y one with:
echo ssh-rsa $(echo $(ssh-keygen -e -f id_rsa | sed
'/--/d;/^Comment:/d') | tr -d \ )
The output between the 2 commands are different, but they are
consistent for any number of runs.
Moreover, if I copy id_rsa to, say, id_rsa.priv:
# ssh-keygen -y -f id_rsa.priv
# ssh-keygen -e -f id_rsa.priv
would generate the same public key output.
Are you saying that the output is different if you rename the file to
id_rsa.priv ??
Running OpenSSL 1.0.0-fips 29 Mar 2010
May I also ask for the openssh version, too? :)
Best regards,
Angelos
Cheers
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