Change capabilities of main key?

flapflap flapflap at
Thu Nov 19 10:31:53 CET 2015


occasionally I notice someone with a public key that has the "SCE" (Sign
Certify Encrypt) capabilities set for a single key pair (presumably,
they did set these manually during key generation).

I understood that this is not recommended because it may simplify
certain attacks (but don't know any sources).

Is there a possibility to modify the (main/sub) key capabilities once
its generated so they can migrate away from the insecure/less secure
setting to, for instance, separate subkeys for Sign and Encrypt?


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