// GetMechanismInfo obtains information about a particular
// mechanism possibly supported by a token.
func (c *Ctx) GetMechanismInfo(slotID uint, m []*Mechanism) (MechanismInfo, error) {
var cm C.CK_MECHANISM_INFO
e := C.GetMechanismInfo(c.ctx, C.CK_ULONG(slotID), C.CK_MECHANISM_TYPE(m[0].Mechanism),
C.CK_MECHANISM_INFO_PTR(&cm))
mi := MechanismInfo{
MinKeySize: uint(cm.ulMinKeySize),
MaxKeySize: uint(cm.ulMaxKeySize),
Flags: uint(cm.flags),
}
return mi, toError(e)
}
func cMechanismList(m []*Mechanism) (arena, C.CK_MECHANISM_PTR, C.CK_ULONG) {
var arena arena
if len(m) == 0 {
return nil, nil, 0
}
pm := make([]C.CK_MECHANISM, len(m))
for i := 0; i < len(m); i++ {
pm[i].mechanism = C.CK_MECHANISM_TYPE(m[i].Mechanism)
if m[i].Parameter == nil {
continue
}
pm[i].pParameter, pm[i].ulParameterLen = arena.Allocate(m[i].Parameter)
}
return arena, C.CK_MECHANISM_PTR(&pm[0]), C.CK_ULONG(len(m))
}
func cMechanismList(m []*Mechanism) (C.CK_MECHANISM_PTR, C.CK_ULONG) {
if len(m) == 0 {
return nil, 0
}
pm := make([]C.CK_MECHANISM, len(m))
for i := 0; i < len(m); i++ {
pm[i].mechanism = C.CK_MECHANISM_TYPE(m[i].Mechanism)
if m[i].Parameter == nil {
continue
}
pm[i].pParameter = C.CK_VOID_PTR(&(m[i].Parameter[0]))
pm[i].ulParameterLen = C.CK_ULONG(len(m[i].Parameter))
}
return C.CK_MECHANISM_PTR(&pm[0]), C.CK_ULONG(len(m))
}
