crypto data types

[R Srinivasan]

friends 

looking for guidance on how to get an rsa.PublicKey from id_rsa.pub

seems like I can parse the id_rsa.pub contents and get a ssh.PublicKey but how do I transform this into an rsa.PublicKey

i need the coersion in order to use other support services.

thanks for any pointers, srini

[a2800276]

looking for guidance on how to get an rsa.PublicKey from id_rsa.pub

seems like I can parse the id_rsa.pub contents and get a ssh.PublicKey but how do I transform this into an rsa.PublicKey

i need the coersion in order to use other support services.

Please consider whether this is really what you need to be doing. If you're being provided with a id_rsa.pub file (presumably from a .ssh configuration directory) you will very likely be performing ssh operations, which are ideally left up to the ssh library to perform. 

If you have a very exotic usecase an know what you are doing, the ssh package uses the crypto.rsa package internally to parse the ssh keyfiles, so just have a look at the implementation there: https://github.com/golang/crypto/blob/master/ssh/keys.go#L262

Good Luck! 

[R Srinivasan]

Indeed. My search yielded:

go get -u -v github.com/ianmcmahon/encoding_ssh

which had exactly what I needed (and should probably be included in the standard ssh package)

The use case itself - a digital signature facility in our Over The Network software upgrade procedure. 

The following is a go rewrite of the tool (from my previous project) :

https://github.com/RajaSrinivasan/disign.git

thanks, srini