[SOLVED] Which is better for security regarding PGP key usage ?
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    Which is better for security regarding PGP key usage ?

    Hi. I would like to ask: which is better from point of security, generate individual PGP key for each e-mail account or use single PGP for all email accounts ?

    I have 3 email accounts, & currently I use different PGP key for each of them. But till now I did not upload these 3 PGP keys (public parts) to server because I'm confronted by this issue.

    Is using multiple keys (each for different email account) make less confidence of others about reality of owner ?

    From other side, if using single PGP key it make compromising event on this single key more destructive, isn't it ?

    Moreover, uploading public key will make associated email account(s) public for spammers .......

    Can you, kindly, help me by your opinions about this ?
    Last edited by User808; 16th June 2019 at 11:09 PM.
    Fedora 30 X64 bit Cinnamon edition on Lenovo ThinkPad e550 with Intel core i7 5500 CPU @ 2.40 GH X 2, RAM = 8 GB, HHD = 1 TB, Hybrid VGA (Intel Corporation HD Graphic 5500 + Radeon R7 M265 2GB)

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    Re: Which is better for security regarding PGP key usage ?

    After very extentive search, I reach to the following result: if you have multiple e-mail accounts, linke one on gmail & other on Yahoo with a 3rd on hotmail & ALL OF THEM named for the public by name of SAME SINGLE PERSON, then it is better for more trust by other to use single Open PGP key.

    This is my case. I will revoke my gmail PGP key & maintain my Yahoo mail PGP then use it for both Yahoo & gmail (& any further future account .....).

    This is not bring any adverse effect on security because user usually store ALL keys in same place (device, program) so even if using multiple keys, all of them will compromised if your machine is compromised.
    Fedora 30 X64 bit Cinnamon edition on Lenovo ThinkPad e550 with Intel core i7 5500 CPU @ 2.40 GH X 2, RAM = 8 GB, HHD = 1 TB, Hybrid VGA (Intel Corporation HD Graphic 5500 + Radeon R7 M265 2GB)

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