net.i2p.crypto.elgamal.ElGamalSigEngine

public final class ElGamalSigEngine
extends Signature

ElG signatures with SHA-256 ref: https://en.wikipedia.org/wiki/ElGamal_signature_scheme

Since:: 0.9.25

Field Summary

Fields inherited from class java.security.Signature
SIGN, state, UNINITIALIZED, VERIFY

Fields inherited from class java.security.SignatureSpi
appRandom

Constructor Summary

Constructors
Constructor	Description
`ElGamalSigEngine()`	No specific hash requested, allows any ElGamal key.
`ElGamalSigEngine(MessageDigest digest)`	Specific hash requested, only matching keys will be allowed.

Method Summary

Modifier and Type	Method	Description
`protected Object`	`engineGetParameter(String param)`	Deprecated.
`protected void`	`engineInitSign(PrivateKey privateKey)`
`protected void`	`engineInitVerify(PublicKey publicKey)`
`protected void`	`engineSetParameter(String param, Object value)`	Deprecated. replaced with this
`protected byte[]`	`engineSign()`
`protected void`	`engineUpdate(byte b)`
`protected void`	`engineUpdate(byte[] b, int off, int len)`
`protected boolean`	`engineVerify(byte[] sigBytes)`

Methods inherited from class java.security.Signature

clone, getAlgorithm, getInstance, getInstance, getInstance, getParameter, getParameters, getProvider, initSign, initSign, initVerify, initVerify, setParameter, setParameter, sign, sign, toString, update, update, update, update, verify, verify

Methods inherited from class java.security.SignatureSpi

engineGetParameters, engineInitSign, engineSetParameter, engineSign, engineUpdate, engineVerify

Methods inherited from class java.lang.Object

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

Constructor Details
- ElGamalSigEngine
  
  public ElGamalSigEngine()
  
  No specific hash requested, allows any ElGamal key.
- ElGamalSigEngine
  
  public ElGamalSigEngine(MessageDigest digest)
  
  Specific hash requested, only matching keys will be allowed.
  
  Parameters:
  
  digest - the hash algorithm that keys must have to sign or verify.
Method Details
- engineInitSign
  
  protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException
  
  Specified by:
  
  engineInitSign in class SignatureSpi
  
  Throws:
  
  InvalidKeyException
- engineInitVerify
  
  protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException
  
  Specified by:
  
  engineInitVerify in class SignatureSpi
  
  Throws:
  
  InvalidKeyException
- engineUpdate
  
  protected void engineUpdate(byte b) throws SignatureException
  
  Specified by:
  
  engineUpdate in class SignatureSpi
  
  Throws:
  
  SignatureException
- engineUpdate
  
  protected void engineUpdate(byte[] b, int off, int len) throws SignatureException
  
  Specified by:
  
  engineUpdate in class SignatureSpi
  
  Throws:
  
  SignatureException
- engineSign
  
  protected byte[] engineSign() throws SignatureException
  
  Specified by:
  
  engineSign in class SignatureSpi
  
  Returns:
  
  ASN.1 R,S
  
  Throws:
  
  SignatureException
- engineVerify
  
  protected boolean engineVerify(byte[] sigBytes) throws SignatureException
  
  Specified by:
  
  engineVerify in class SignatureSpi
  
  Parameters:
  
  sigBytes - ASN.1 R,S
  
  Throws:
  
  SignatureException
- engineSetParameter
  
  protected void engineSetParameter(String param, Object value)
  
  Deprecated.
  replaced with this
  
  Specified by:
  
  engineSetParameter in class SignatureSpi
- engineGetParameter
  
  protected Object engineGetParameter(String param)
  
  Deprecated.
  
  Specified by:
  
  engineGetParameter in class SignatureSpi

Class ElGamalSigEngine

Field Summary

Fields inherited from class java.security.Signature

Fields inherited from class java.security.SignatureSpi

Constructor Summary

Method Summary

Methods inherited from class java.security.Signature

Methods inherited from class java.security.SignatureSpi

Methods inherited from class java.lang.Object

Constructor Details

Method Details