Hello,

> On 18 Sep 2021, at 17:15, Peter Müller <peter.mueller(a)ipfire.org> wrote:
> 
> Hello Michael,
> hello *,
> 
> just a small comment for the records: As discussed in the last monthly telephone
> conference (https://wiki.ipfire.org/devel/telco/2021-09-06), we will use a TPM only
> for HWRNG purposes. Nothing else will depend on it, as there is nothing relevant
> left to be locked down in IPFire thanks to enforced kernel module signing.

Does anyone have any hardware at grabs to verify that this works?

rngd —-list should list the TPM device as a potential source.

> So no user needs to worry about introducing TPM support coming with a lack of
> digital sovereignty - that is, if something like this even exits on today's hardware. :-)
> 
> Acked-by: Peter Müller <peter.mueller(a)ipfire.org>
> 
> Thanks, and best regards,
> Peter Müller
> 
> 
>> Signed-off-by: Michael Tremer <michael.tremer(a)ipfire.org>
>> ---
>>  config/kernel/kernel.config.aarch64-ipfire | 15 ++++++++++++++-
>>  config/kernel/kernel.config.armv6l-ipfire  | 12 +++++++++++-
>>  config/kernel/kernel.config.i586-ipfire    | 16 +++++++++++++++-
>>  config/kernel/kernel.config.x86_64-ipfire  | 17 ++++++++++++++++-
>>  4 files changed, 56 insertions(+), 4 deletions(-)
>> diff --git a/config/kernel/kernel.config.aarch64-ipfire b/config/kernel/kernel.config.aarch64-ipfire
>> index aa34b64db..49ee85970 100644
>> --- a/config/kernel/kernel.config.aarch64-ipfire
>> +++ b/config/kernel/kernel.config.aarch64-ipfire
>> @@ -3422,7 +3422,19 @@ CONFIG_DEVMEM=y
>>  CONFIG_RAW_DRIVER=y
>>  CONFIG_MAX_RAW_DEVS=8192
>>  CONFIG_DEVPORT=y
>> -# CONFIG_TCG_TPM is not set
>> +CONFIG_TCG_TPM=m
>> +CONFIG_HW_RANDOM_TPM=y
>> +CONFIG_TCG_TIS_CORE=m
>> +CONFIG_TCG_TIS=m
>> +CONFIG_TCG_TIS_I2C_ATMEL=m
>> +CONFIG_TCG_TIS_I2C_INFINEON=m
>> +CONFIG_TCG_TIS_I2C_NUVOTON=m
>> +CONFIG_TCG_ATMEL=m
>> +CONFIG_TCG_INFINEON=m
>> +CONFIG_TCG_CRB=m
>> +CONFIG_TCG_VTPM_PROXY=m
>> +CONFIG_TCG_TIS_ST33ZP24=m
>> +CONFIG_TCG_TIS_ST33ZP24_I2C=m
>>  # CONFIG_XILLYBUS is not set
>>  # end of Character devices
>>  @@ -7271,6 +7283,7 @@ CONFIG_IO_WQ=y
>>  CONFIG_KEYS=y
>>  # CONFIG_KEYS_REQUEST_CACHE is not set
>>  # CONFIG_PERSISTENT_KEYRINGS is not set
>> +# CONFIG_TRUSTED_KEYS is not set
>>  # CONFIG_ENCRYPTED_KEYS is not set
>>  # CONFIG_KEY_DH_OPERATIONS is not set
>>  CONFIG_SECURITY_DMESG_RESTRICT=y
>> diff --git a/config/kernel/kernel.config.armv6l-ipfire b/config/kernel/kernel.config.armv6l-ipfire
>> index 7b82e87df..b11a179e3 100644
>> --- a/config/kernel/kernel.config.armv6l-ipfire
>> +++ b/config/kernel/kernel.config.armv6l-ipfire
>> @@ -3463,7 +3463,16 @@ CONFIG_DEVMEM=y
>>  CONFIG_RAW_DRIVER=y
>>  CONFIG_MAX_RAW_DEVS=8192
>>  CONFIG_DEVPORT=y
>> -# CONFIG_TCG_TPM is not set
>> +CONFIG_TCG_TPM=m
>> +CONFIG_HW_RANDOM_TPM=y
>> +CONFIG_TCG_TIS_CORE=m
>> +CONFIG_TCG_TIS=m
>> +CONFIG_TCG_TIS_I2C_ATMEL=m
>> +CONFIG_TCG_TIS_I2C_INFINEON=m
>> +CONFIG_TCG_TIS_I2C_NUVOTON=m
>> +CONFIG_TCG_VTPM_PROXY=m
>> +CONFIG_TCG_TIS_ST33ZP24=m
>> +CONFIG_TCG_TIS_ST33ZP24_I2C=m
>>  # CONFIG_XILLYBUS is not set
>>  # end of Character devices
>>  @@ -7366,6 +7375,7 @@ CONFIG_IO_WQ=y
>>  CONFIG_KEYS=y
>>  # CONFIG_KEYS_REQUEST_CACHE is not set
>>  # CONFIG_PERSISTENT_KEYRINGS is not set
>> +# CONFIG_TRUSTED_KEYS is not set
>>  # CONFIG_ENCRYPTED_KEYS is not set
>>  # CONFIG_KEY_DH_OPERATIONS is not set
>>  CONFIG_SECURITY_DMESG_RESTRICT=y
>> diff --git a/config/kernel/kernel.config.i586-ipfire b/config/kernel/kernel.config.i586-ipfire
>> index 90d4ac856..2d7158c96 100644
>> --- a/config/kernel/kernel.config.i586-ipfire
>> +++ b/config/kernel/kernel.config.i586-ipfire
>> @@ -3449,7 +3449,21 @@ CONFIG_DEVPORT=y
>>  CONFIG_HPET=y
>>  # CONFIG_HPET_MMAP is not set
>>  CONFIG_HANGCHECK_TIMER=m
>> -# CONFIG_TCG_TPM is not set
>> +CONFIG_TCG_TPM=m
>> +CONFIG_HW_RANDOM_TPM=y
>> +CONFIG_TCG_TIS_CORE=m
>> +CONFIG_TCG_TIS=m
>> +CONFIG_TCG_TIS_I2C_ATMEL=m
>> +CONFIG_TCG_TIS_I2C_INFINEON=m
>> +CONFIG_TCG_TIS_I2C_NUVOTON=m
>> +CONFIG_TCG_NSC=m
>> +CONFIG_TCG_ATMEL=m
>> +CONFIG_TCG_INFINEON=m
>> +CONFIG_TCG_XEN=m
>> +CONFIG_TCG_CRB=m
>> +CONFIG_TCG_VTPM_PROXY=m
>> +CONFIG_TCG_TIS_ST33ZP24=m
>> +CONFIG_TCG_TIS_ST33ZP24_I2C=m
>>  # CONFIG_TELCLOCK is not set
>>  # CONFIG_XILLYBUS is not set
>>  # end of Character devices
>> diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire
>> index fe93d731c..65014f41a 100644
>> --- a/config/kernel/kernel.config.x86_64-ipfire
>> +++ b/config/kernel/kernel.config.x86_64-ipfire
>> @@ -3413,7 +3413,21 @@ CONFIG_DEVPORT=y
>>  CONFIG_HPET=y
>>  # CONFIG_HPET_MMAP is not set
>>  CONFIG_HANGCHECK_TIMER=m
>> -# CONFIG_TCG_TPM is not set
>> +CONFIG_TCG_TPM=m
>> +CONFIG_HW_RANDOM_TPM=y
>> +CONFIG_TCG_TIS_CORE=m
>> +CONFIG_TCG_TIS=m
>> +CONFIG_TCG_TIS_I2C_ATMEL=m
>> +CONFIG_TCG_TIS_I2C_INFINEON=m
>> +CONFIG_TCG_TIS_I2C_NUVOTON=m
>> +CONFIG_TCG_NSC=m
>> +CONFIG_TCG_ATMEL=m
>> +CONFIG_TCG_INFINEON=m
>> +CONFIG_TCG_XEN=m
>> +CONFIG_TCG_CRB=m
>> +CONFIG_TCG_VTPM_PROXY=m
>> +CONFIG_TCG_TIS_ST33ZP24=m
>> +CONFIG_TCG_TIS_ST33ZP24_I2C=m
>>  # CONFIG_TELCLOCK is not set
>>  # CONFIG_XILLYBUS is not set
>>  # end of Character devices
>> @@ -6746,6 +6760,7 @@ CONFIG_IO_WQ=y
>>  CONFIG_KEYS=y
>>  # CONFIG_KEYS_REQUEST_CACHE is not set
>>  # CONFIG_PERSISTENT_KEYRINGS is not set
>> +# CONFIG_TRUSTED_KEYS is not set
>>  # CONFIG_ENCRYPTED_KEYS is not set
>>  # CONFIG_KEY_DH_OPERATIONS is not set
>>  CONFIG_SECURITY_DMESG_RESTRICT=y