Package com.sshtools.common.ssh.components.jce

Class Ssh2RsaPublicKey

java.lang.Object

com.sshtools.common.ssh.components.jce.Ssh2RsaPublicKey

All Implemented Interfaces:

Component, SshPublicKey, SshRsaPublicKey, SecureComponent

Direct Known Subclasses:

Ssh2RsaPublicKeySHA256, Ssh2RsaPublicKeySHA512

public class Ssh2RsaPublicKey
extends Object
implements SshRsaPublicKey

A RSA public key implementation which uses a JCE provider.

Author:

Lee David Painter

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Ssh2RsaPublicKey.Ssh2RsaPublicKeyFactory

Field Summary

Fields

Modifier and Type	Field	Description
protected RSAPublicKey	pubKey

Constructor Summary

Constructors

Constructor	Description
Ssh2RsaPublicKey()	Default constructor for initializing the key from a byte array using the init method.
Ssh2RsaPublicKey(BigInteger modulus, BigInteger publicExponent)
Ssh2RsaPublicKey(RSAPublicKey pubKey)

Method Summary

Modifier and Type	Method	Description
BigInteger	doPublic(BigInteger input)
boolean	equals(Object obj)
String	getAlgorithm()	Get the algorithm name for the public key.
int	getBitLength()	Get the bit length of the public key
byte[]	getEncoded()	Encode the public key into a blob of binary data, the encoded result will be passed into init to recreate the key.
String	getEncodingAlgorithm()	The algorithm name used in the encoding of the public key
String	getFingerprint()	Return an SSH fingerprint of the public key
PublicKey	getJCEPublicKey()	Return the JCE component for this key.
BigInteger	getModulus()
int	getPriority()
BigInteger	getPublicExponent()
SecurityLevel	getSecurityLevel()
int	getSignatureLength()
String	getSigningAlgorithm()	The algorithm name expected to be encoded in SSH signatures
int	getVersion()
int	hashCode()
SshPublicKey	init(byte[] blob, int start, int len)	Initialize the public key from a blob of binary data.
String	test()	Test the JCE for algorithm availability.
boolean	verifySignature(byte[] signature, byte[] data)	Verify the signature.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sshtools.common.ssh.components.SshPublicKey

init, isCertificate

Field Details

pubKey

protected RSAPublicKey pubKey

Constructor Details

Ssh2RsaPublicKey

public Ssh2RsaPublicKey()

Default constructor for initializing the key from a byte array using the init method.

Ssh2RsaPublicKey

public Ssh2RsaPublicKey(RSAPublicKey pubKey)

Ssh2RsaPublicKey

public Ssh2RsaPublicKey(BigInteger modulus,
 BigInteger publicExponent)
                 throws NoSuchAlgorithmException,
InvalidKeySpecException

Throws:

NoSuchAlgorithmException

InvalidKeySpecException

Method Details

getSecurityLevel

public SecurityLevel getSecurityLevel()

Specified by:

getSecurityLevel in interface SecureComponent

getPriority

public int getPriority()

Specified by:

getPriority in interface SecureComponent

getEncoded

public byte[] getEncoded()
                  throws SshException

Description copied from interface: SshPublicKey

Encode the public key into a blob of binary data, the encoded result will be passed into init to recreate the key.

Specified by:

getEncoded in interface SshPublicKey

Returns:

an encoded byte array

Throws:

SshException

getFingerprint

public String getFingerprint()
                      throws SshException

Description copied from interface: SshPublicKey

Return an SSH fingerprint of the public key

Specified by:

getFingerprint in interface SshPublicKey

Returns:

String

Throws:

SshException

getBitLength

public int getBitLength()

Description copied from interface: SshPublicKey

Get the bit length of the public key

Specified by:

getBitLength in interface SshPublicKey

Returns:

the bit length of the public key

getEncodingAlgorithm

public String getEncodingAlgorithm()

Description copied from interface: SshPublicKey

The algorithm name used in the encoding of the public key

Specified by:

getEncodingAlgorithm in interface SshPublicKey

init

public SshPublicKey init(byte[] blob,
 int start,
 int len)
                  throws SshException

Description copied from interface: SshPublicKey

Initialize the public key from a blob of binary data.

Specified by:

init in interface SshPublicKey

Throws:

SshException

getAlgorithm

public String getAlgorithm()

Description copied from interface: SshPublicKey

Get the algorithm name for the public key.

Specified by:

getAlgorithm in interface SecureComponent

Specified by:

getAlgorithm in interface SshPublicKey

Returns:

the algorithm name, for example "ssh-dss"

verifySignature

public boolean verifySignature(byte[] signature,
 byte[] data)
                        throws SshException

Description copied from interface: SshPublicKey

Verify the signature.

Specified by:

verifySignature in interface SshPublicKey

Returns:

true if the signature was produced by the corresponding private key that owns this public key, otherwise false.

Throws:

SshException

getSignatureLength

public int getSignatureLength()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

doPublic

public BigInteger doPublic(BigInteger input)
                    throws SshException

Specified by:

doPublic in interface SshRsaPublicKey

Throws:

SshException

getModulus

public BigInteger getModulus()

Specified by:

getModulus in interface SshRsaPublicKey

getPublicExponent

public BigInteger getPublicExponent()

Specified by:

getPublicExponent in interface SshRsaPublicKey

getVersion

public int getVersion()

Specified by:

getVersion in interface SshRsaPublicKey

getJCEPublicKey

public PublicKey getJCEPublicKey()

Description copied from interface: SshPublicKey

Return the JCE component for this key.

Specified by:

getJCEPublicKey in interface SshPublicKey

Specified by:

getJCEPublicKey in interface SshRsaPublicKey

Returns:

test

public String test()

Description copied from interface: SshPublicKey

Test the JCE for algorithm availability.

Specified by:

test in interface SshPublicKey

Returns:

getSigningAlgorithm

public String getSigningAlgorithm()

Description copied from interface: SshPublicKey

The algorithm name expected to be encoded in SSH signatures

Specified by:

getSigningAlgorithm in interface SshPublicKey