What's the behavior of GPGmail if there're two valid key pairs coexist for same email address in GPG keychain?
GPGmail 2.6b2, build 1105b
I'm not sure it's appropriate to ask this question in "Feedback" category, and sorry if I do it wrong.
I'm currently using one key pair (with 3 user IDs/addresses attached to it), which is going to expire in Nov. 4, 2016. And I don't change the expiration date (for security concerns), so I plan to generate a new key pair in Nov. 1, 2016 to replace the old one.
Then, is it possible to use the old key pair to sign messages between Nov. 1 and Nov. 4, 2016, when there are two valid key pairs for a (few) same address coexist in the GPG Keychain? (I hope so, since I have to mail my new public keys in messages, which need to be signed by my old key pairs to show my authenticity.)
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Support Staff 1 Posted by Steve on 08 Jan, 2016 09:39 PM
Hey SSKao,
totally legit and good question to ask. The categories are blurry and since this isn't a problem per se, feedback seems appropriate.
First: to solve the key transition problem, it is recommended to sign the new key with your old key.
Then for the phase while you have two valid keys, if you are writing a new mail in mail.app from an address you have two valid keys for, you will be able to choose which key you want to use in a dropdown in the "From:" field.
Hope this answers your question.
All the best,
steve
Support Staff 2 Posted by Steve on 10 Feb, 2016 03:19 PM
Closing, since no further user feedback was received. Should your problem persist, feel free to re-open this discussion any time.
All the best, steve
Steve closed this discussion on 10 Feb, 2016 03:19 PM.