io.nem.core.crypto.ed25519

Class Ed25519DsaSigner

java.lang.Object

io.nem.core.crypto.ed25519.Ed25519DsaSigner

All Implemented Interfaces:

DsaSigner

public class Ed25519DsaSigner
extends java.lang.Object
implements DsaSigner

Implementation of the DSA signer for Ed25519.

Constructor Summary

Constructors

Constructor and Description
Ed25519DsaSigner(KeyPair keyPair) Creates a Ed25519 DSA signer.

Method Summary

Modifier and Type	Method and Description
KeyPair	getKeyPair() Gets the underlying key pair.
boolean	isCanonicalSignature(Signature signature) Determines if the signature is canonical.
Signature	makeSignatureCanonical(Signature signature) Makes this signature canonical.
Signature	sign(byte[] data) Signs the SHA3 hash of an arbitrarily sized message.
boolean	verify(byte[] data, Signature signature) Verifies that the signature is valid.

Methods inherited from class java.lang.Object

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

Constructor Detail

Ed25519DsaSigner

public Ed25519DsaSigner(KeyPair keyPair)

Creates a Ed25519 DSA signer.

Parameters:

keyPair - The key pair to use.

Method Detail

getKeyPair

public KeyPair getKeyPair()

Gets the underlying key pair.

Returns:

The key pair.

sign

public Signature sign(byte[] data)

Description copied from interface: DsaSigner

Signs the SHA3 hash of an arbitrarily sized message.

Specified by:

sign in interface DsaSigner

Parameters:

data - The message to sign.

Returns:

The generated signature.

verify

public boolean verify(byte[] data,
                      Signature signature)

Description copied from interface: DsaSigner

Verifies that the signature is valid.

Specified by:

verify in interface DsaSigner

Parameters:

data - The original message.

signature - The generated signature.

Returns:

true if the signature is valid.

isCanonicalSignature

public boolean isCanonicalSignature(Signature signature)

Description copied from interface: DsaSigner

Determines if the signature is canonical.

Specified by:

isCanonicalSignature in interface DsaSigner

Parameters:

signature - The signature.

Returns:

true if the signature is canonical.

makeSignatureCanonical

public Signature makeSignatureCanonical(Signature signature)

Description copied from interface: DsaSigner

Makes this signature canonical.

Specified by:

makeSignatureCanonical in interface DsaSigner

Parameters:

signature - The signature.

Returns:

Signature in canonical form.