com.jscape.inet.ssh.util
Class KeyPairAssembler

java.lang.Object
  com.jscape.inet.ssh.util.KeyPairAssembler

public class KeyPairAssembler
extends java.lang.Object

Key pair reader. Provides reading services for several key formats.

All methods throw NullPointerException if null-references were passed in arguments.

Author:

Alex Usun

Constructor Summary

KeyPairAssembler()
Creates a new assembler instance.

Method Summary

void	addFormat(KeyPairFormat format) Adds a new format to the reader.
boolean	containsFormat(KeyPairFormat format) Check if format is already added.
void	removeFormat(KeyPairFormat format) Removes format from the reader.
java.security.KeyPair	restoreKeyPair(byte[] data, java.lang.String passphrase) Restores key pair from the specified byte array.
java.security.KeyPair	restoreKeyPair(java.io.File file, java.lang.String passphrase) Reads key pair from the specified file.
java.security.KeyPair	restoreKeyPair(java.io.InputStream in, java.lang.String passphrase) Reads key pair from the specified input stream.
java.security.KeyPair	restoreKeyPair(java.lang.String key, java.lang.String passphrase) Reads key pair from the specified key string

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyPairAssembler

public KeyPairAssembler()

Creates a new assembler instance.

Method Detail

containsFormat

public boolean containsFormat(KeyPairFormat format)

Check if format is already added.

Parameters:

format - target format

Returns:

true if format is already added; false otherwise

addFormat

public void addFormat(KeyPairFormat format)

Adds a new format to the reader.

Parameters:

format - target format

Throws:

java.lang.IllegalArgumentException - if format is already added

removeFormat

public void removeFormat(KeyPairFormat format)

Removes format from the reader.

Parameters:

format - target format

restoreKeyPair

public java.security.KeyPair restoreKeyPair(byte[] data,
                                            java.lang.String passphrase)
                                     throws FormatException

Restores key pair from the specified byte array.

Parameters:

data - key pair data

passphrase - passphrase

Returns:

restored key pair

Throws:

FormatException - if key pair cannot be restored

restoreKeyPair

public java.security.KeyPair restoreKeyPair(java.io.InputStream in,
                                            java.lang.String passphrase)
                                     throws FormatException,
                                            java.io.IOException

Reads key pair from the specified input stream. Assumes, that input stream contains only one key pair.

Parameters:

in - input stream

passphrase - passphrase

Returns:

readed key pair

Throws:

FormatException - if key pair cannot be restored

java.io.IOException - if I/O error occurs

restoreKeyPair

public java.security.KeyPair restoreKeyPair(java.io.File file,
                                            java.lang.String passphrase)
                                     throws FormatException,
                                            java.io.IOException

Reads key pair from the specified file.

Parameters:

file - key pair file

passphrase - passphrase

Returns:

readed key pair

Throws:

FormatException - if key pair cannot be restored

java.io.IOException - if I/O error occurs

restoreKeyPair

public java.security.KeyPair restoreKeyPair(java.lang.String key,
                                            java.lang.String passphrase)
                                     throws FormatException

Reads key pair from the specified key string

Parameters:

key - the private key

passphrase - the private key password

Returns:

key pair

Throws:

FormatException - if key pair cannot be restored

java.io.IOException - if I/O error occurs