iaik.security.ec.eddsa

Class SHA512WithContextEdDSASignature

java.lang.Object

java.security.SignatureSpi

iaik.security.ec.eddsa.SHA512WithContextEdDSASignature

public final class SHA512WithContextEdDSASignature
extends SignatureSpi

The Ed25519ctx algorithm for curve Ed25519. It is responsible for signature creation and verification and implements EdDSA according to [1] and [2].

References:

[1] Daniel J. Bernstein, Niels Duif, Tanja Lange, Peter Schwabe, and Bo-Yin Yang, "High-speed high-security signatures", 2011.

[2] S. Josefsson, I. Liusvaara, "Edwards-curve Digital Signature Algorithm (EdDSA)", https://tools.ietf.org/html/rfc8032

Author:

Sebastian Ramacher

Field Summary

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

Constructors

Constructor and Description
SHA512WithContextEdDSASignature() Constructs a new signature instance.

Method Summary

Modifier and Type	Method and Description
protected Object	engineGetParameter(String param) Deprecated.
protected AlgorithmParameters	engineGetParameters()
protected void	engineInitSign(PrivateKey privateKey)
protected void	engineInitSign(PrivateKey privateKey, SecureRandom random)
protected void	engineInitVerify(PublicKey publicKey)
protected void	engineSetParameter(AlgorithmParameterSpec params)
protected void	engineSetParameter(String param, Object value) Deprecated.
protected byte[]	engineSign()
protected void	engineUpdate(byte b)
protected void	engineUpdate(byte[] b, int off, int len)
protected void	engineUpdate(ByteBuffer byteBuffer)
protected boolean	engineVerify(byte[] sigBytes)

Methods inherited from class java.security.SignatureSpi

clone, engineSign, engineVerify

Methods inherited from class java.lang.Object

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

Constructor Detail

SHA512WithContextEdDSASignature

public SHA512WithContextEdDSASignature()

Constructs a new signature instance.

Method Detail

engineInitSign

protected void engineInitSign(PrivateKey privateKey,
                              SecureRandom random)
                       throws InvalidKeyException

Throws:

InvalidKeyException

engineInitVerify

protected void engineInitVerify(PublicKey publicKey)
                         throws InvalidKeyException

Throws:

InvalidKeyException

engineUpdate

protected void engineUpdate(byte[] b,
                            int off,
                            int len)
                     throws SignatureException

Specified by:

engineUpdate in class SignatureSpi

Throws:

SignatureException

engineUpdate

protected void engineUpdate(byte b)
                     throws SignatureException

Specified by:

engineUpdate in class SignatureSpi

Throws:

SignatureException

engineUpdate

protected void engineUpdate(ByteBuffer byteBuffer)

Overrides:

engineUpdate in class SignatureSpi

engineInitSign

protected void engineInitSign(PrivateKey privateKey)
                       throws InvalidKeyException

Specified by:

engineInitSign in class SignatureSpi

Throws:

InvalidKeyException

engineSign

protected byte[] engineSign()
                     throws SignatureException

Specified by:

engineSign in class SignatureSpi

Throws:

SignatureException

engineVerify

protected boolean engineVerify(byte[] sigBytes)
                        throws SignatureException

Specified by:

engineVerify in class SignatureSpi

Throws:

SignatureException

engineSetParameter

@Deprecated
protected void engineSetParameter(String param,
                                              Object value)
                                       throws InvalidParameterException

Deprecated.

Specified by:

engineSetParameter in class SignatureSpi

Throws:

InvalidParameterException

engineGetParameter

@Deprecated
protected Object engineGetParameter(String param)
                                         throws InvalidParameterException

Deprecated.

Specified by:

engineGetParameter in class SignatureSpi

Throws:

InvalidParameterException

engineGetParameters

protected AlgorithmParameters engineGetParameters()

Overrides:

engineGetParameters in class SignatureSpi

engineSetParameter

protected void engineSetParameter(AlgorithmParameterSpec params)
                           throws InvalidAlgorithmParameterException

Overrides:

engineSetParameter in class SignatureSpi

Throws:

InvalidAlgorithmParameterException