KDFAnsiX963Spec (Java Card API, Classic Edition)

All Superinterfaces:

AlgorithmParameterSpec
```
public interface KDFAnsiX963Spec
extends AlgorithmParameterSpec
```
This interface specifies the set of parameters used to instantiate a DerivationFunction implementing the KDF Key Derivation Function defined in in the standard ANSI X9.63.
This interface is bound to the constant DerivationFunction.ALG_KDF_ANSI_X9_63.

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.
`short`	`getOutputLength()`	Returns the KDF output length in bytes.
`byte[]`	`getSecret()`	Gets the shared secret value for the key derivation function.
`byte[]`	`getSharedInfo()`	Gets the shared info data.

- 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_224, MessageDigest.ALG_SHA_256, MessageDigest.ALG_SHA_384, MessageDigest.ALG_SHA_512, MessageDigest.ALG_SHA3_224, MessageDigest.ALG_SHA3_256, MessageDigest.ALG_SHA3_384, MessageDigest.ALG_SHA3_512
  - getSecret
```
byte[] getSecret()
```
    Gets the shared secret value for the key derivation function.
    
    Returns:
    
    the shared secret. It may be an array view.
  - getSharedInfo
```
byte[] getSharedInfo()
```
    Gets the shared info data.
    It may be an array view. It may be null.
    
    Returns:
    
    the fixed input data.
  - getOutputLength
```
short getOutputLength()
```
    Returns the KDF output length in bytes. It specifies the total length of data that can be generated using subsequent calls to DerivationFunction.nextBytes(byte[], short, short) or DerivationFunction.nextBytes(javacard.security.SecretKey).
    
    Returns:
    
    the output length