.gitlab/ci/build_archiso.sh: do not use "default" as the gpg Key-Type

GnuPG changed their default from RSA to ECC, so Key-Length not
a thing it supports. Instead it asks for the Key-Curve.

Avoid using the default and hardcode ed25519 (which is the current
GnuPG default).

1 files changed, 2 insertions, 2 deletions

diff --git a/.gitlab/ci/build_archiso.sh b/.gitlab/ci/build_archiso.sh
index 0504fd2..d11d1fc 100755
--- a/.gitlab/ci/build_archiso.sh
+++ b/.gitlab/ci/build_archiso.sh
@@ -183,8 +183,8 @@ __EOF__
 
     gpg --homedir "${gnupg_homedir}" --gen-key <<EOF
 %echo Generating ephemeral Arch Linux release engineering key pair...
-Key-Type: default
-Key-Length: 3072
+Key-Type: eddsa
+Key-Curve: ed25519
 Key-Usage: sign
 Name-Real: Arch Linux Release Engineering
 Name-Comment: Ephemeral Signing Key