DSTU4145Signer (Bouncy Castle Library 1.60 API Specification)

java.lang.Object
- org.bouncycastle.crypto.signers.DSTU4145Signer

All Implemented Interfaces:

DSA
```
public class DSTU4145Signer
extends java.lang.Object
implements DSA
```
DSTU 4145-2002
National Ukrainian standard of digital signature based on elliptic curves (DSTU 4145-2002).

Constructor Summary

Constructors
Constructor Description

DSTU4145Signer()

Constructors
Constructor	Description
`DSTU4145Signer()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected ECMultiplier`	`createBasePointMultiplier()`
`java.math.BigInteger[]`	`generateSignature(byte[] message)`	sign the passed in message (usually the output of a hash function).
`void`	`init(boolean forSigning, CipherParameters param)`	initialise the signer for signature generation or signature verification.
`boolean`	`verifySignature(byte[] message, java.math.BigInteger r, java.math.BigInteger s)`	verify the message message against the signature values r and s.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DSTU4145Signer
```
public DSTU4145Signer()
```
- Method Detail
  - init
```
public void init(boolean forSigning,
                 CipherParameters param)
```
    Description copied from interface: DSA
    
    initialise the signer for signature generation or signature verification.
    
    Specified by:
    
    init in interface DSA
    
    Parameters:
    
    forSigning - true if we are generating a signature, false otherwise.
    
    param - key parameters for signature generation.
  - generateSignature
```
public java.math.BigInteger[] generateSignature(byte[] message)
```
    Description copied from interface: DSA
    
    sign the passed in message (usually the output of a hash function).
    
    Specified by:
    
    generateSignature in interface DSA
    
    Parameters:
    
    message - the message to be signed.
    
    Returns:
    
    two big integers representing the r and s values respectively.
  - verifySignature
```
public boolean verifySignature(byte[] message,
                               java.math.BigInteger r,
                               java.math.BigInteger s)
```
    Description copied from interface: DSA
    
    verify the message message against the signature values r and s.
    
    Specified by:
    
    verifySignature in interface DSA
    
    Parameters:
    
    message - the message that was supposed to have been signed.
    
    r - the r signature value.
    
    s - the s signature value.
  - createBasePointMultiplier
```
protected ECMultiplier createBasePointMultiplier()
```

Class DSTU4145Signer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DSTU4145Signer

Method Detail

init

generateSignature

verifySignature

createBasePointMultiplier