pretorh/setup and use test gpg keys.md

## setup and use test gpg keys.md

      
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              setup and use test gpg keys.md
            
          
    creating:
GNUPGHOME=${GNUPGHOME?'need path for new gnupg home dir'}
GPG_PASS_PHRASE=${GPG_PASS_PHRASE-passphrase}

# refuse to overwrite existing
if [ -e "$GNUPGHOME" ] ; then
    echo "$GNUPGHOME already exists!"
    exit 1
fi

# create the directory, set permissions
mkdir -pv "$GNUPGHOME"
chmod 700 "$GNUPGHOME"

# create a secret key
export GNUPGHOME
cat << EOF | gpg --batch --gen-key
Key-Type: RSA
Name-Email: foo@bar.com
Passphrase:$GPG_PASS_PHRASE
EOF

using: make sure GNUPGHOME env var is set, and add --passphrase=$GPG_PASS_PHRASE --batch --pinentry-mode loopback to gpg options
ex echo "hello" | gpg --armor --sign --passphrase=passphrase --batch --pinentry-mode loopback