I wrote a tool to convert between all of the RSA key formats that I could find: http://github.com/jpf/lokey http://github.com/jpf/lokey If you're still curious

I wrote a tool to convert between all of the RSA key formats that I could find: http://github.com/jpf/lokey http://github.com/jpf/lokey If you're still curious if the key material is different (I'm very curious), try the following and compare the results: pkcs15-tool --read-ssh-key 1 | lokey to jwk pkcs15-tool --read-ssh-key 1 --rfc4716 | lokey to jwk (You can also replace "jwk" with any of the other supported RSA types. It might be easier to compare the "ssh" type)