binary data is not represented properly as ascii-armored
E.g. the following binary key is not properly represented:
this is for the email alias: falkensmaze
The file downloaded by the frontend gives:
$ gpg --import < /tmp/o9r4s38sm3ywbgm89yx137jufwb8km4g.asc
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: invalid radix64 character 2D skipped
gpg: [don't know]: invalid packet (ctb=10)
gpg: read_block: read error: Invalid packet
gpg: no valid OpenPGP data found.
gpg: import from '[stdin]' failed: Invalid keyring
gpg: Total number processed: 0