Why does my SSH private key still work after changing some bytes? (2016)

Re:Why does my SSH private key still work after changing som... by Dylan16807 on Saturday December 31, 2022 @06:32AM (#34195515)

> If you read the response you'd realize that it depends on how the key is generated.

Where does it say or imply that? When I read the answer it sounds like using them is optional but generating them is mandatory.

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Re:Why does my SSH private key still work after changing som... by ausudhz on Saturday December 31, 2022 @06:37AM (#34195547)

> With this optimization, the values of n, e and d are not required, hence are ignored by typical implementations whenever p, q, dp, dq and qinv are available*

> *at least for OpenSSH, they do not have to be present: setting p=q=1 and dp=dq=qinv=0 makes the implementation use n and d.

https://crypto.stackexchange.com/questions/31807/why-does-my...

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Re:Why does my SSH private key still work after changing som... by Dylan16807 on Saturday December 31, 2022 @06:53AM (#34195649)

I misread the second quote. I suppose that is evidence, but setting them to an incorrect value suggests that this might not be a valid file even if it works.

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Re:Why does my SSH private key still work after changing som... by layer8 on Saturday December 31, 2022 @02:10PM (#34199640)

This is a particularity of OpenSSH though and not supported by RFC 8017. The fields are mandatory and required by the spec to contained the correct values.

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