Is it possible to sign a message with multiple digest algorithms?

vedaal at vedaal at
Sun Sep 7 03:40:00 CEST 2014

On 9/6/2014 at 6:46 PM, "Pete Stephenson" <pete at> wrote:
>Hi all,
>Is it possible to sign a message (or certify a key) with multiple 
>For example, one might wish to sign a message with both SHA256 and
>If so, how would one go about doing this?
>I would imagine that, if possible, the command would be similar to 
>--armor --digest-algo SHA256 RIPEMD160 --clearsign" but this fails.
>If it is possible, how does GPG handle multiple signatures? 


It can be done if a separate signing subkey is used for each different digest.


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