StaticKeys Class

Namespace: Yubico.YubiKey.Scp Assembly: Yubico.YubiKey.dll

Represents a triple of SCP03 static keys shared with the device.

C#

public class StaticKeys : Object, IDisposable

Inheritance System.Object StaticKeys

Implements

System.IDisposable

Remarks

See also the User's Manual entry on SCP03.

These are the three secret keys that only the device and remote user know. Clients must supply these to communicate securely with a remote device.

Systems often derive and assign these keys using a diversification function keyed with a 'master key' and run on the 'DivData' of each device.

Constructors

Name	Description
StaticKeys()	Constructs an instance using the well-known default values; using these provides no security. This class will consider these keys to be the key set with the Key Version Number of 255 (0xFF).
StaticKeys(ReadOnlyMemory<Byte>, ReadOnlyMemory<Byte>, ReadOnlyMemory<Byte>)	Constructs an instance given the supplied keys. This class will consider these keys to be the key set with the Key Version Number of This class will copy the input key data, not just a reference. You can overwrite the input buffers as soon as the StaticKeys object is created. 16-byte AES128 shared secret key 16-byte AES128 shared secret key 16-byte AES128 shared secret key

Properties

Name	Description
ChannelEncryptionKey	AES128 shared secret key used to calculate the Session-ENC key. Also called the 'DAK' or 'Key-ENC' in some specifications.
ChannelMacKey	AES128 shared secret key used to calculate the Session-MAC key. Also called the 'DMK' or 'Key-MAC' in some specifications.
DataEncryptionKey	AES128 shared secret key used to wrap secrets. Also called the 'DEK' in some specifications.

Methods

Name	Description
AreKeysSame(StaticKeys)	Determine if the contents of each key is the same for both objects. If so, this method will return true.
Dispose()	This will clear all references and sensitive buffers
Dispose(Boolean)