KDFIcaoMrtdSpec (Java Card API, Classic Edition)

All Superinterfaces:

AlgorithmParameterSpec
```
public interface KDFIcaoMrtdSpec
extends AlgorithmParameterSpec
```
This interface specifies the set of parameters used to instantiate a DerivationFunction implementing KDF Key Derivation Function defined in the standard ICAO MRTD Doc 9303.
This interface is bound to the constant DerivationFunction.ALG_KDF_ICAO_MRTD.
Computation of the KDF function refers to H(K || c) where H is a digest algorithm, K is a shared secret and c a 32 bits counter.

Since:

3.1

See Also:

DerivationFunction

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`byte`	`getAlgorithm()`	Returns the Digest Algorithm associated with the derivation function.
`byte[]`	`getCounter()`	Gets the Counter.
`byte[]`	`getSecret()`	Gets the shared secret value for the key derivation function.

- Method Detail
  - getAlgorithm
```
byte getAlgorithm()
```
    Returns the Digest Algorithm associated with the derivation function.
    
    Returns:
    
    the Digest algorithm associated with the derivation function
    
    See Also:
    
    MessageDigest.ALG_SHA, MessageDigest.ALG_SHA_256
  - getSecret
```
byte[] getSecret()
```
    Gets the shared secret value for the key derivation function.
    It may be an array view.
    
    Returns:
    
    the shared secret value
  - getCounter
```
byte[] getCounter()
```
    Gets the Counter. It is a 4 bytes (32 bits) long.
    It may be an array view.
    
    Returns:
    
    the counter