DocumentBasicAccessKeys

internal final class DocumentBasicAccessKeys

The DocumentBasicAccessKeys class represents the Document Basic Access Keys derived from the Machine Readable Zone (MRZ) key.

These keys are used for encryption (Kenc) and message authentication (Kmac) in Basic Access Control (BAC). The MRZ key is hashed using SHA-1, and the key seed is generated from the hash. The final keys Kenc and Kmac are derived using a key derivation mechanism with the key seed.

Note

The BACHandler class use these keys to establish access to the IC.

See also

BACHandler

  • The encryption key (Kenc) used for data encryption in BAC.

    Declaration

    Swift

    private(set) var Kenc: [UInt8] { get }

  • The message authentication key (Kmac) used for data integrity in BAC.

    Declaration

    Swift

    private(set) var Kmac: [UInt8] { get }

  • Initializes Document Basic Access Keys using the MRZ key.

    Throws

    An error if key derivation fails.

    Declaration

    Swift

    internal init(mrzKey: String) throws

    Parameters

    mrzKey

    The MRZ key used to derive the Document Basic Access Keys.