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tests: Honor FIPS mode

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* common/t-ssh-utils.c (FLAGS_NOFIPS): New.
  (sample_keys): Add flags member.
  (main): Detect if libgcrypt is in FIPS mode, try SHA256 fingerprints
  first and expect the MD5 ones will fail.
--

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
This commit is contained in:
Jakub Jelen 2022-04-13 12:41:43 +02:00 committed by NIIBE Yutaka
parent 618aa8689a
commit 1f0651dbfb
1 changed files with 61 additions and 25 deletions
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86
common/t-ssh-utils.c
View File

@ -27,12 +27,14 @@
#include "util.h"
#include "ssh-utils.h"
#define FLAGS_NOFIPS 1
static struct
{
const char *key;
const char *fpr_md5;
const char *fpr_sha256;
int flags;
} sample_keys[] = {
{ "(protected-private-key "
"(rsa "
@ -106,7 +108,8 @@ static struct
"(comment sample_dsa_passphrase_is_abc)"
")",
"MD5:2d:b1:70:1a:04:9e:41:a3:ce:27:a5:c7:22:fe:3a:a3",
"SHA256:z8+8HEuD/5QpegGS4tSK02dJF+a6o2V67VM2gOPz9oQ"
"SHA256:z8+8HEuD/5QpegGS4tSK02dJF+a6o2V67VM2gOPz9oQ",
FLAGS_NOFIPS
},
{ /* OpenSSH 6.7p1 generated key: */
"(protected-private-key "
@ -191,7 +194,8 @@ static struct
"(comment \"eddsa w/o comment\")"
")", /* Passphrase="abc" */
"MD5:f1:fa:c8:a6:40:bb:b9:a1:65:d7:62:65:ac:26:78:0e",
"SHA256:yhwBfYnTOnSXcWf1EOPo+oIIpNJ6w/bG36udZ96MmsQ"
"SHA256:yhwBfYnTOnSXcWf1EOPo+oIIpNJ6w/bG36udZ96MmsQ",
0 /* The fingerprint works in FIPS mode because ECC algorithm is enabled */
},
{
NULL,
@ -269,6 +273,11 @@ main (int argc, char **argv)
gcry_sexp_t key;
char *string;
int idx;
int in_fips_mode = 0;
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
if (gcry_fips_mode_active())
in_fips_mode = 1;
/* --dump-keys dumps the keys as KEYGRIP.key.IDX. Useful to compute
fingerprints to enhance the test vectors. */
@ -307,7 +316,7 @@ main (int argc, char **argv)
{
key = read_key (argv[1]);
err = ssh_get_fingerprint_string (key, GCRY_MD_MD5, &string);
err = ssh_get_fingerprint_string (key, GCRY_MD_SHA256, &string);
if (err)
{
fprintf (stderr, "%s:%d: error getting fingerprint: %s\n",
@ -317,8 +326,14 @@ main (int argc, char **argv)
puts (string);
xfree (string);
err = ssh_get_fingerprint_string (key, GCRY_MD_SHA256, &string);
if (err)
err = ssh_get_fingerprint_string (key, GCRY_MD_MD5, &string);
if (in_fips_mode && !err)
{
fprintf (stderr, "%s:%d: Getting MD5 fingerprint unexpectedly "
"worked in FIPS mode\n", __FILE__, __LINE__);
exit (1);
}
else if (err)
{
fprintf (stderr, "%s:%d: error getting fingerprint: %s\n",
__FILE__, __LINE__, gpg_strerror (err));
@ -343,27 +358,18 @@ main (int argc, char **argv)
exit (1);
}
err = ssh_get_fingerprint_string (key, GCRY_MD_MD5, &string);
if (err)
{
fprintf (stderr, "%s:%d: error getting fingerprint for "
"sample key %d: %s\n",
__FILE__, __LINE__, idx, gpg_strerror (err));
exit (1);
}
if (strcmp (string, sample_keys[idx].fpr_md5))
{
fprintf (stderr, "%s:%d: fingerprint mismatch for "
"sample key %d\n",
__FILE__, __LINE__, idx);
fprintf (stderr, "want: %s\n got: %s\n",
sample_keys[idx].fpr_md5, string);
exit (1);
}
xfree (string);
err = ssh_get_fingerprint_string (key, GCRY_MD_SHA256, &string);
if (in_fips_mode && (sample_keys[idx].flags & FLAGS_NOFIPS))
{
if (!err)
{
fprintf (stderr, "%s:%d: Getting fingerprint of unsupported key "
"%d unexpectedly worked in FIPS mode\n", __FILE__,
__LINE__, idx);
exit (1);
}
continue;
}
if (err)
{
fprintf (stderr, "%s:%d: error getting fingerprint for "
@ -383,6 +389,36 @@ main (int argc, char **argv)
}
xfree (string);
err = ssh_get_fingerprint_string (key, GCRY_MD_MD5, &string);
if (in_fips_mode)
{
if (!err)
{
fprintf (stderr, "%s:%d: Getting MD5 fingerprint unexpectedly "
"worked in FIPS mode for key %d\n", __FILE__, __LINE__, idx);
exit (1);
}
continue;
}
if (err)
{
fprintf (stderr, "%s:%d: error getting fingerprint for "
"sample key %d: %s\n",
__FILE__, __LINE__, idx, gpg_strerror (err));
exit (1);
}
if (strcmp (string, sample_keys[idx].fpr_md5))
{
fprintf (stderr, "%s:%d: fingerprint mismatch for "
"sample key %d\n",
__FILE__, __LINE__, idx);
fprintf (stderr, "want: %s\n got: %s\n",
sample_keys[idx].fpr_md5, string);
exit (1);
}
xfree (string);
gcry_sexp_release (key);
}
}