Hello, When I create unattended key with cv25519 or ed25519 as subkeys, GnuPG doesn't apply 'encrypt' usage, expire date and preferences. There is no problem with RSA.
Regards. (PS : My example key numbers were padded with X and Y) $ gpg --batch --gen-key Key-Type: ecdsa Key-Curve: ed25519 Key-Usage: sign auth Subkey-Type: ecdh Subkey-Curve: cv25519 Subkey-Usage: encrypt Passphrase: Name-Real: Yan Fiz Expire-Date: 1y Preferences: twofish sha512 zlib $ gpg --edit-key XXXXXXXXXXXXXXXX showpref quit gpg (GnuPG) 2.2.5; Copyright (C) 2018 Free Software Foundation, Inc. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. gpg: key XXXXXXXXXXXXXXXX: 2 bad signatures gpg: key XXXXXXXXXXXXXXXX: Warning: errors found and only checked self-signatures, run 'check' to check all signatures. Secret key is available. sec ed25519/XXXXXXXXXXXXXXXX created: 2018-02-24 expires: never usage: SCA trust: ultimate validity: ultimate ssb cv25519/YYYYYYYYYYYYYYYY created: 2018-02-24 expires: never usage: [ultimate] (1). Yan Fiz [ultimate] (1). Yan Fiz Cipher: 3DES Digest: SHA1 Compression: ZIP, Uncompressed Features: Keyserver no-modify
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