GNUPG / GPG / S3 / Duplicity gpg: no default secret key: secret key not available

[NIIBE Yutaka]

On 07/16/2015 12:13 AM, punksgt wrote:
> Here is the details of my keys:
> 
> |/home/bege/.gnupg/pubring.gpg
> -----------------------------
> pub   2048R/7E4B6B9B 2015-07-15
> uid                  Chad H <me at mail.com>
> 
> /home/bege/.gnupg/secring.gpg
> -----------------------------
> sec   2048R/7E4B6B9B 2015-07-15
> uid                  Chad H <me at mail.com>

It seems that your key is only primary key (which is for signing other
key and for signing data).  For encryption, you also need a subkey for
encryption (or primary key should have a flag for encryption).

You can add a subkey for encryption by 'gpg --edit 7E4B6B9B' or you
can create new key with primary key and subkey for encryption.
Default is "RSA and RSA", which means RSA primary key and RSA
encryption key.
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