Ed25519ph (prehashed) mechanism flag

[totopr]

Hi,

need to pass the following parameters to the EDDSA signing

typedef struct CK_EDDSA_PARAMS
{
     CK_BBOOL     phFlag;
     CK_ULONG     ulContextDataLen;
     CK_BYTE_PTR  pContextData; 
}

ref: https://thalesdocs.com/gphsm/luna/7/docs/network/Content/sdk/mechanisms/CKM_EDDSA.htm

but I'm not finding any way to do it. Is that supported?
mechanism = Mechanism(LowLevel.CKM_EDDSA, param=?)

thanks
Antonio

[LudovicRousseau]

CK_EDDSA_PARAMS is not defined or used in PyKCS11.

So I would say it is not yet supported. Patches are welcome.
It looks like CKM_EDDSA is supported by SoftHSM so implementation and tests in PyKCS11 should be possible.

[LudovicRousseau]

@totopr do you plan to propose a patch?

[gtx-ap]

Hello @LudovicRousseau,

sadly can't with the timeframe I have. there are other gaps I can't afford right now.
thanks
Antonio