Unless you need the SAME exact key pair, you can just make a new cert for the MS Windows platform, probably has a wizard and all...
If you DO need the same key pair and certificate, start with the openssl pkcs12 commands. From: Ruiyuan Jiang Sent: Thursday, October 13, 2011 3:13 PM To: openssl-users@openssl.org Subject: Migrate from RSA key to PK12 format Hi, I have a certificate generated with RSA format for Apache web server. Now I have a need to convert the key and cert or generate a new key, csr with same URL name using PK12 format to migrate to MS Windows platform. Can anyone help me? Thanks. Ryan Jiang This message (including any attachments) is intended solely for the specific individual(s) or entity(ies) named above, and may contain legally privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it. Any disclosure, copying, or distribution of this message, or the taking of any action based on it, by other than the intended recipient, is strictly prohibited.