> 1. Is there any good reason to remove this code? Yes. If it's not tested, reviewed, or in general use, then it's more likely to be harmful (source of bugs) than useful. > 2. Is this the OpenSSL name for the private key format > used by older Microsoft Authenticate tools (and thus > sometimes converted to/from PKCS#12 when switching > tool chains)? I think only really old ISS, but that's why I asked. > 3. Is this any of the formats used by SSH? No; the seven characters "RSA_NET" do not appear in the openssh source.