title: Inter-convertability of asymmetric key containers (eg: X.509, PGP, OpenSSH)
body: <p>Are asymmetrical cryptographic keys fundamentally inter-convertible between the major key container formats? For example, can I convert an X.509 key file into a PGP or OpenGPG key file? </p>
  
  <p>And--assuming the answer is yes--is it "security neutral" to keep one key pair in whatever format and convert into whichever container file format is needed for the occasion?</p>
  
  <p>I'm getting a little tired of maintaining so many key pairs for X.509, OpenGPG, and SSH, when they're all RSA at the heart.</p>