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knownhosts: Give better warnings about unsupported key types

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Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
This commit is contained in:
Andreas Schneider
2022-09-05 08:50:55 +02:00
parent b3b3fbfa1d
commit 2d79c7a9d5
1 changed files with 15 additions and 3 deletions
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18
src/knownhosts.c
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@@ -483,6 +483,9 @@ static const char *ssh_known_host_sigs_from_hostkey_type(enum ssh_keytypes_e typ
#ifdef HAVE_DSA
case SSH_KEYTYPE_DSS:
return "ssh-dss";
#else
SSH_LOG(SSH_LOG_WARN, "DSS keys are not supported by this build");
break;
#endif
#ifdef HAVE_ECDH
case SSH_KEYTYPE_ECDSA_P256:
@@ -491,13 +494,22 @@ static const char *ssh_known_host_sigs_from_hostkey_type(enum ssh_keytypes_e typ
return "ecdsa-sha2-nistp384";
case SSH_KEYTYPE_ECDSA_P521:
return "ecdsa-sha2-nistp521";
#else
case SSH_KEYTYPE_ECDSA_P256:
case SSH_KEYTYPE_ECDSA_P384:
case SSH_KEYTYPE_ECDSA_P521:
SSH_LOG(SSH_LOG_WARN, "ECDSA keys are not supported by this build");
break;
#endif
case SSH_KEYTYPE_UNKNOWN:
default:
SSH_LOG(SSH_LOG_WARN, "The given type %d is not a base private key type "
"or is unsupported", type);
return NULL;
SSH_LOG(SSH_LOG_WARN,
"The given type %d is not a base private key type "
"or is unsupported",
type);
}
return NULL;
}
/**