Command

public struct Command

An APDU Command per ISO/IEC 7816-4. Command APDU encoding options:

    case 1:  |CLA|INS|P1 |P2 |                                 len = 4
    case 2s: |CLA|INS|P1 |P2 |LE |                             len = 5
    case 3s: |CLA|INS|P1 |P2 |LC |...BODY...|                  len = 6..260
    case 4s: |CLA|INS|P1 |P2 |LC |...BODY...|LE |              len = 7..261
    case 2e: |CLA|INS|P1 |P2 |00 |LE1|LE2|                     len = 7
    case 3e: |CLA|INS|P1 |P2 |00 |LC1|LC2|...BODY...|          len = 8..65542
    case 4e: |CLA|INS|P1 |P2 |00 |LC1|LC2|...BODY...|LE1|LE2|  len =10..65544

    LE, LE1, LE2 may be 0x00.
    LC must not be 0x00 and LC1|LC2 must not be 0x00|0x00

  • Constructs a CommandAPDU from the four header bytes. This is case 1 in ISO 7816, no command body.

    Declaration

    Swift

    public init(cla: UInt8, ins: UInt8, p1: UInt8, p2: UInt8, ne: Int? = nil) throws

    Parameters

    cla

    CLA byte
    ins

    Instruction byte
    p1

    P1 byte
    p2

    P2 byte
    ne

    Nr of expected bytes in response. Default: 0

  • Constructs a CommandAPDU from the four header bytes, command data, and expected response data length. This is case 4 in ISO 7816, command data and Le present. The value Nc is taken as dataLength. If Ne or Nc are zero, the APDU is encoded as case 1, 2, or 3 per ISO 7816.

    Declaration

    Swift

    public init(cla: UInt8, ins: UInt8, p1: UInt8, p2: UInt8, data: Data?, ne: Int? = nil) throws

    Parameters

    cla

    CLA byte
    ins

    Instruction byte
    p1

    P1 byte
    p2

    P2 byte
    ne

    Nr of expected bytes in response. Default: 0

  • APDU body data

    Declaration

    Swift

    public var data: Data? { get }
  • cla

    APDU class identifier

    Declaration

    Swift

    public var cla: UInt8 { get }
  • ins

    APDU Instruction

    Declaration

    Swift

    public var ins: UInt8 { get }
  • p1

    APDU P1

    Declaration

    Swift

    public var p1: UInt8 { get }
  • p2

    APDU P2

    Declaration

    Swift

    public var p2: UInt8 { get }
  • ne

    APDU Le - Expected length in response body

    Declaration

    Swift

    public var ne: Int? { get }
  • nc

    APDU Lc - Command body length

    Declaration

    Swift

    public var nc: Int { get }

  • APDU raw

    Declaration

    Swift

    public var bytes: Data { get }