Top Description Fields Constructors Methods
org.bouncycastle.pqc.legacy.crypto.gmss

public Class GMSSStateAwareSigner

extends Object
implements StateAwareMessageSigner
Class Inheritance
All Implemented Interfaces
org.bouncycastle.pqc.crypto.StateAwareMessageSigner, org.bouncycastle.pqc.crypto.MessageSigner
Imports
org.bouncycastle.crypto.CipherParameters, .Digest, org.bouncycastle.crypto.params.AsymmetricKeyParameter, .ParametersWithRandom, org.bouncycastle.pqc.crypto.StateAwareMessageSigner, org.bouncycastle.util.Memoable

This class implements the GMSS signature scheme, but allows multiple signatures to be generated.

Note

getUpdatedPrivateKey() needs to be called to fetch the current value of the usable private key.

Field Summary

Modifier and TypeField and Description
private final GMSSSigner
private GMSSPrivateKeyParameters

Constructor Summary

AccessConstructor and Description
public

Method Summary

Modifier and TypeMethod and Description
public byte[]
generateSignature(byte[]
the message to be signed.
message
)

Implements org.bouncycastle.pqc.crypto.MessageSigner.generateSignature.

sign the passed in message (usually the output of a hash function).
public AsymmetricKeyParameter
getUpdatedPrivateKey()

Implements org.bouncycastle.pqc.crypto.StateAwareMessageSigner.getUpdatedPrivateKey.

Return the current version of the private key with the updated state.
public void
init(boolean
true if we are generating a signature, false otherwise.
forSigning
,
CipherParameters
key parameters for signature generation.
param
)

Implements org.bouncycastle.pqc.crypto.MessageSigner.init.

initialise the signer for signature generation or signature verification.
public boolean
verifySignature(byte[]
the message that was supposed to have been signed.
message
,
byte[]
the signature of the message
signature
)

Implements org.bouncycastle.pqc.crypto.MessageSigner.verifySignature.

verify the message message against the signature value.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

gmssSignerback to summary
private final GMSSSigner gmssSigner
keyback to summary
private GMSSPrivateKeyParameters key

Constructor Detail

GMSSStateAwareSignerback to summary
public GMSSStateAwareSigner(final Digest digest)

Method Detail

generateSignatureback to summary
public byte[] generateSignature(byte[] message)

Implements org.bouncycastle.pqc.crypto.MessageSigner.generateSignature.

Doc from org.bouncycastle.pqc.crypto.MessageSigner.generateSignature.

sign the passed in message (usually the output of a hash function).

Parameters
message:byte[]

the message to be signed.

Returns:byte[]

the signature of the message

getUpdatedPrivateKeyback to summary
public AsymmetricKeyParameter getUpdatedPrivateKey()

Implements org.bouncycastle.pqc.crypto.StateAwareMessageSigner.getUpdatedPrivateKey.

Doc from org.bouncycastle.pqc.crypto.StateAwareMessageSigner.getUpdatedPrivateKey.

Return the current version of the private key with the updated state.

Note

calling this method will effectively disable the Signer from being used for further signature generation without another call to init().

Returns:AsymmetricKeyParameter

an updated private key object, which can be used for later signature generation.

initback to summary
public void init(boolean forSigning, CipherParameters param)

Implements org.bouncycastle.pqc.crypto.MessageSigner.init.

Doc from org.bouncycastle.pqc.crypto.MessageSigner.init.

initialise the signer for signature generation or signature verification.

Parameters
forSigning:boolean

true if we are generating a signature, false otherwise.

param:CipherParameters

key parameters for signature generation.

verifySignatureback to summary
public boolean verifySignature(byte[] message, byte[] signature)

Implements org.bouncycastle.pqc.crypto.MessageSigner.verifySignature.

Doc from org.bouncycastle.pqc.crypto.MessageSigner.verifySignature.

verify the message message against the signature value.

Parameters
message:byte[]

the message that was supposed to have been signed.

signature:byte[]

the signature of the message