New Mechanisms subgroup Part 3 or 4, new AES

On 4/30/2013 5:19 PM, Robert Relyea wrote: CKM_AES_XCBC_MAC_96 CKM_AES_XCBC_MAC_96 is a special case used with IPsec.
128-bit result truncated to 96 bits.
Why wouldn't you just truncate the result after its returned from PKCS11?
Mike