Package org.bouncycastle.jcajce.spec

Class KEMExtractSpec.Builder

java.lang.Object

org.bouncycastle.jcajce.spec.KEMExtractSpec.Builder

Enclosing class:

KEMExtractSpec

public static final class KEMExtractSpec.Builder
extends Object

Builder class for creating a KEMExtractSpec.

Constructor Summary

Constructors

Constructor	Description
Builder(PrivateKey privateKey, byte[] encapsulation, String keyAlgorithmName, int keySizeInBits)	Basic builder.

Method Summary

Modifier and Type	Method	Description
KEMExtractSpec	build()	Build the new parameter spec.
KEMExtractSpec.Builder	withKdfAlgorithm(AlgorithmIdentifier kdfAlgorithm)	Set the KDF algorithm and digest algorithm for wrap key generation.
KEMExtractSpec.Builder	withNoKdf()	Use the shared secret directly for key wrap generation.
KEMExtractSpec.Builder	withOtherInfo(byte[] otherInfo)	Set the OtherInfo to use with the KDF.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Builder

public Builder(PrivateKey privateKey,
 byte[] encapsulation,
 String keyAlgorithmName,
 int keySizeInBits)

Basic builder.

Parameters:

privateKey - the private key to use for the secret extraction.

encapsulation - the encapsulation to process.

keyAlgorithmName - the algorithm name for the secret key we want to generate.

keySizeInBits - the size of the wrapping key we want to produce in bits.

Method Details

withNoKdf

public KEMExtractSpec.Builder withNoKdf()

Use the shared secret directly for key wrap generation.

Returns:

the current Builder instance.

withKdfAlgorithm

public KEMExtractSpec.Builder withKdfAlgorithm(AlgorithmIdentifier kdfAlgorithm)

Set the KDF algorithm and digest algorithm for wrap key generation. The default KDF is X9.44 KDF-3, also known as the NIST concatenation KDF.

Parameters:

kdfAlgorithm - the KDF algorithm to apply.

Returns:

the current Builder instance.

withOtherInfo

public KEMExtractSpec.Builder withOtherInfo(byte[] otherInfo)

Set the OtherInfo to use with the KDF. The default OtherInfo is a zero length byte[].

Parameters:

otherInfo - the other info to use.

Returns:

the current Builder instance.

build

public KEMExtractSpec build()

Build the new parameter spec.

Returns:

a new parameter spec configured according to the builder state.