Thanks. I am taking the kernel from kernel.org not the one provided by
Red Hat or any other OS. AFAIU, certification or module signatures are
done during kernel compilation (by turning on MODULE_SIG*).

On Tue, Feb 23, 2016 at 2:02 PM, Leo Silva (a.k.a kirotawa)
[off-list ref] wrote:

If it's a kernel provide by a company, such as RHEL or SUSE, I'd recommend
to ask for them support/bugzilla.

Regarding FIPS/fipsmode, it's a kind of certification that is done by these
company with focus on specific hardware and Kernels, if just a bit is
different on a crypto algorithm it'll probably fail, since test
certification, fips, was not done using this 'new algorithm' as base.

[]'s

On Tue, Feb 23, 2016 at 4:41 PM, Tapas Sarangi [off-list ref]
wrote:

quoted

I am recompiling 3.18.27 on a platform derived from el6. FIPS mode is
enabled by checking the following configs:

CONFIG_CRYPTO_FIPS=y
CONFIG_CRYPTO_TEST=y

Following RH docs, initramfs was regenerated using dracut-fips (el6).
I also generated hmac signed vmlinuz during the compilation.

During boot, kernel panics with the following trace:
kernel line has the arguments, 'fips=1 boot=/dev/sda1'.


"end Kernel Panic - not syncing: Module crc32c_intel signature
verification failed in FIPS mode"

Some additional  info:
It seems under fips mode, initrd runs, './sbin/fips.sh' which then
runs 'modprobe tcrypt'.

I tried running modprobe tcrypt without the fips mode on the same
kernel, but it fails with this message.

FATAL: Error inserting tcrypt
(/lib/modules/3.18.27-1.timbuktu/kernel/crypto/tcrypt.ko.gz): Unknown
symbol in module, or unknown parameter (see dmesg)

Looking at dmesg:

[   31.248054] sha256_ssse3: Using AVX optimized SHA-256 implementation

[   31.308174] sha512_ssse3: Using AVX optimized SHA-512 implementation

[   31.407674] alg: No test for crc32 (crc32-pclmul)

[   31.408410] alg: No test for crc32 (crc32-table)

[   31.409086] alg: hash: Failed to load transform for hmac(crc32): -2

[   31.413155] alg: No test for fips(ansi_cprng) (fips_ansi_cprng)

[   31.440281] tcrypt: one or more tests failed!


Now, one of these messages,

[   31.409086] alg: hash: Failed to load transform for hmac(crc32): -2

comes, most likely from :


linux-3.18.27/crypto/tcrypt.c (L1498)

        case 110:

                ret += tcrypt_test("hmac(crc32)");

                break;


and also from

linux-3.18.27/crypto/testmgr.c

     .alg = "hmac(crc32)",

                .test = alg_test_hash,

                .suite = {

                        .hash = {

                                .vecs = bfin_crc_tv_template,

                                .count = BFIN_CRC_TEST_VECTORS

                       }

                }


Any suggestion on how to solve this problem would be appreciated.
Please let me know if I can provide more info. I am ready to help on
that.

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

--

----------------------------------------------
Le?nidas S. Barbosa (Kirotawa)
blog: corecode.wordpress.com