Package marauroa.common.crypto

Class RSAPublicKey

java.lang.Object

marauroa.common.crypto.RSAPublicKey

Direct Known Subclasses:

RSAKey

public class RSAPublicKey
extends Object

Implementation of a RSA key.

Author:

quisar

Field Summary

Fields

Modifier and Type	Field	Description
static BigInteger	big0	0
static BigInteger	big1	1
static BigInteger	big2	2
static BigInteger	big6	6
protected BigInteger	e	e
protected BigInteger	n	n

Constructor Summary

Constructors

Constructor	Description
RSAPublicKey(BigInteger n, BigInteger e)	creates a new RSAPublicKey object

Method Summary

Modifier and Type	Method	Description
BigInteger	encode(BigInteger message)	encodes a BigInteger
byte[]	encodeByteArray(byte[] message)	encodes an array
BigInteger	getE()	get e
BigInteger	getN()	gets n
static String	getString(BigInteger value)	converts a BigInteger into a string
static BigInteger	getValue(String str)	converts a string into a BigInteger
void	print(PrintStream out)	prints the key to a stream
void	print(PrintWriter out)	prints the key to a writer
boolean	verifySignature(BigInteger message, BigInteger signature)	verifies a signature

Methods inherited from class java.lang.Object

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

Field Details

big0

public static final BigInteger big0

0

big1

public static final BigInteger big1

1

big2

public static final BigInteger big2

2

big6

public static final BigInteger big6

6

n

protected BigInteger n

n

e

protected BigInteger e

e

Constructor Details

RSAPublicKey

public RSAPublicKey(BigInteger n,
 BigInteger e)

creates a new RSAPublicKey object

Parameters:

n - n

e - e

Method Details

print

public void print(PrintWriter out)

prints the key to a writer

Parameters:

out - writer to print to

print

public void print(PrintStream out)

prints the key to a stream

Parameters:

out - stream to print to

getN

public BigInteger getN()

gets n

Returns:

n

getE

public BigInteger getE()

get e

Returns:

e

encode

public BigInteger encode(BigInteger message)

encodes a BigInteger

Parameters:

message - BigInteger

Returns:

encoded BigInteger

encodeByteArray

public byte[] encodeByteArray(byte[] message)

encodes an array

Parameters:

message - array

Returns:

encoded array

verifySignature

public boolean verifySignature(BigInteger message,
 BigInteger signature)

verifies a signature

Parameters:

message - BigInteger

signature - BigInteger

Returns:

true, if the signature is correct; false otherwise

getValue

public static BigInteger getValue(String str)

converts a string into a BigInteger

Parameters:

str - to convert

Returns:

BigInteger

getString

public static String getString(BigInteger value)

converts a BigInteger into a string

Parameters:

value - BigInteger

Returns:

String