Enum PrivLen 

pub enum PrivLen {
    Canonical,
    Jcop1Byte,
}

Encoding length for the GP Privileges field (GPCS v2.3.1 §11.1.2, Tables 11-7..11-9). The field may legally be 1 byte (legacy / pre-2.2) or 3 bytes (the 2.2+ extended encoding); byte 1 carries the core privileges (Security Domain 0x80, Card Lock, Card Terminate, …) and bytes 2–3 carry the 2.2+ extended privileges (Trusted Path 0x80 in byte 2, …).

When an extended (byte 2/3) bit is actually set, the 3-byte form is mandatory and this selector is ignored. When bytes 2–3 are zero, the two forms are value-equivalent per the spec, but real implementations differ:

• Canonical (3-byte) is the spec-canonical form and the safe default. The Oracle JCDK simulator requires it: given only the 1-byte form it does not treat bytes 2–3 as zero and ends up reporting an unintended privilege (e.g. Trusted Path) for the created SD.
• Jcop1Byte collapses to 1 byte. NXP JCOP 4 P71 / J3R150 requires this: it rejects Lp = 03 for a privilege that fits in byte 1 and accepts only Lp = 01 (e.g. 01 80 for an SSD).

Selection is a per-card property; discovery sets it, the workflow passes it through. Default to Canonical unless a JCOP-P71 quirk is detected.

Variants

Canonical

Always emit the full 3-byte Privileges field (spec-canonical; jcsim).

Jcop1Byte

Collapse to the 1-byte form when bytes 2–3 are zero (NXP JCOP 4 P71).

Trait Implementations

impl Clone for PrivLen

fn clone(&self) -> PrivLen

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PrivLen

impl Debug for PrivLen

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PrivLen

fn default() -> PrivLen

Returns the “default value” for a type.

impl Eq for PrivLen

impl PartialEq for PrivLen

fn eq(&self, other: &PrivLen) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PrivLen