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gpg: Make invalid primary key algos obvious in key listings.

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* g10/keylist.c (print_key_line): Print a warning for invalid algos.
--

Non-OpenPGP compliant keys now show a warning flag on the sec or pub
line like in:

  gpg: can't encode a 256 bit MD into a 88 bits frame, algo=8
  sec   cv25519 2019-01-30 [INVALID_ALGO]
        4239F3D606A19258E7A88C3F9A3F4F909C5034C5
  uid           [ultimate] ffffff

Instead of showing the usage flags "[CE]".  Without this patch only
the error message is printed and the reason for it was not immediately
obvious (cv25519 is encryption only but we always consider the primary
key as having the "C" flag).

Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit db87132b10664718b7db6ec1dad584b54d1fb265)
This commit is contained in:
Werner Koch 2019-03-05 12:39:11 +01:00
parent b3c8ce9e43
commit d2a7f9078a
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 9 additions and 1 deletions
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10
g10/keylist.c
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@ -2059,10 +2059,18 @@ print_key_line (ctrl_t ctrl, estream_t fp, PKT_public_key *pk, int secret)
tty_fprintf (fp, "/%s", keystr_from_pk (pk));
tty_fprintf (fp, " %s", datestr_from_pk (pk));
if ((opt.list_options & LIST_SHOW_USAGE))
if (pk->flags.primary
&& !(openpgp_pk_algo_usage (pk->pubkey_algo)
& (PUBKEY_USAGE_CERT| PUBKEY_USAGE_SIG|PUBKEY_USAGE_AUTH)))
{
/* A primary key which is really not capable to sign. */
tty_fprintf (fp, " [INVALID_ALGO]");
}
else if ((opt.list_options & LIST_SHOW_USAGE))
{
tty_fprintf (fp, " [%s]", usagestr_from_pk (pk, 0));
}
if (pk->flags.revoked)
{
tty_fprintf (fp, " [");