Does IMA support SHA-256 PCR banks?

[Lakshmi Ramasubramanian <nramas@xxxxxxxxxxxxxxxxxxx>]

Hi,

I noticed that even when SHA-256 is selected as the digest algorithm for 
IMA measurement, the PCR hash is still SHA-1.

A net search found the text given below in the following wiki:
   https://wiki.strongswan.org/projects/strongswan/wiki/IMA

**********************************************************************
Since SHA-1 has been "shattered" we recommend to use SHA-256 for the 
file measurement hashes.

IMA implementation does not support SHA-256 PCR banks yet, so the 
SHA-256 file hashes are extended into SHA-1 PCR registers.
**********************************************************************

Is the above still true?

In ima_init_digests() the digest algorithm for PCR extend is set from 
the digest algorithm set in the PCR banks.

Is there a way to configure IMA to use SHA-256 PCR banks?

int __init ima_init_digests(void)
{
...
	for (i = 0; i < ima_tpm_chip->nr_allocated_banks; i++)
		digests[i].alg_id = ima_tpm_chip->allocated_banks[i].alg_id;
...
	
}

thanks,
 -lakshmi