Re: RSA key size not allowed in FIPS

[Tapas Sarangi <TSarangi@trustwave.com>]

Hi Stephan,


Thanks for your responses. I am past this error now.

I am still NOT out of trouble. Now, test integrity fails while trying to
get into FIPS mode. Here is the snippet of error messages.  I will create
a separate thread for this,

/boot/vmlinuz-4.7.0-1.tos2_5: OK
modprobe: ERROR: could not insert 'drbg': Unknown symbol in module, or
unknown parameter (see dmesg)
[    1.193406] dracut: FATAL: FIPS integrity test failed
[    1.194086] dracut: Refusing to continue

[    1.195820] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x00000100
[    1.195820]


-Tapas



On 8/9/16, 10:00 AM, "Tapas Sarangi" <TSarangi@trustwave.com> wrote:

>Embarrassing! Yes, I just saw this while you are pressing send on that
>replyŠ default bits were set to 4096 in x509.genkey. :-(
>
>I am trying out with 2048 bits. I will confirm.
>
>-Tapas
>
>
>On 8/9/16, 9:55 AM, "Stephan Mueller" <smueller@chronox.de> wrote:
>
>>Am Dienstag, 9. August 2016, 14:39:03 CEST schrieb Tapas Sarangi:
>>
>>Hi Tapas, David,
>>
>>> Hi Stephan,
>>>
>>> If I understand this correctly, this (CONFIG_MODULE_SIG_HASH=³sha256")
>>> tells about the key size used.
>>> I am using ³sha256². Initially, I was using ³sha512² which I thought
>>>could
>>> be causing problem, but I am getting same error when change it to
>>> ³sha256².
>>>
>>> [root@localhost ~]# grep MODULE_SIG /boot/config-4.7.0-1.tos2_5
>>>
>>> CONFIG_MODULE_SIG=y
>>> # CONFIG_MODULE_SIG_FORCE is not set
>>> CONFIG_MODULE_SIG_ALL=y
>>> # CONFIG_MODULE_SIG_SHA1 is not set
>>> # CONFIG_MODULE_SIG_SHA224 is not set
>>> CONFIG_MODULE_SIG_SHA256=y
>>> # CONFIG_MODULE_SIG_SHA384 is not set
>>> # CONFIG_MODULE_SIG_SHA512 is not set
>>> CONFIG_MODULE_SIG_HASH="sha256"
>>> CONFIG_MODULE_SIG_KEY="certs/signing_key.pem"
>>
>>It is rather the question how signing_key.pem is generated.
>>
>>Do you have the file certs/x509.genkey? If yes, what is the default_bits
>>value?
>>
>>David, the x509.genkey file seems to generate a 4k RSA key per default.
>>This
>>will cause a panic with fips=1 as only 2k and 3k keys are allowed.
>>
>>Ciao
>>Stephan
>


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