Can I use my RSA private key on multiple computers i.e. my desktop and laptop. Or do I have to create a unique key for each computer I own, and add their respective public keys to necessary servers/programs.


You can, but you shouldn't.

Each device should get its own keypair. This makes recovery from a lost or stolen device much easier.

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Yes, you can. ​​​​​​​​​​​​​​​​​

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  • 1
    Although it's technically correct, it's not a good advice. – rvs Mar 24 '16 at 23:10

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