de.alpharogroup.crypto.key

Class PrivateKeyExtensions

java.lang.Object

de.alpharogroup.crypto.key.PrivateKeyExtensions

public class PrivateKeyExtensions
extends Object

The class PrivateKeyExtensions.

Constructor Summary

Constructors

Constructor and Description
PrivateKeyExtensions()

Method Summary

Modifier and Type	Method and Description
static String	fromPKCS1ToPemFormat(byte[] privateKeyPKCS1Formatted) Transform the given byte array(of private key in PKCS#1 format) to a PEM formatted String.
static PublicKey	generatePublicKey(PrivateKey privateKey) Generate the corresponding PublicKey object from the given PrivateKey object.
static int	getKeyLength(PrivateKey privateKey) Gets the key length of the given PrivateKey.
static de.alpharogroup.crypto.key.KeySize	getKeySize(PrivateKey privateKey) Gets the KeySize of the given PrivateKey or null if not found.
static String	toBase64(PrivateKey privateKey) Transform the given PrivateKey to a base64 encoded String value.
static String	toBase64Binary(PrivateKey privateKey) Transform the given PrivateKey to a base64 encoded String value.
static String	toHexString(PrivateKey privateKey) Transform the given PrivateKey to a hexadecimal String value.
static String	toHexString(PrivateKey privateKey, boolean lowerCase) Transform the given PrivateKey to a hexadecimal String value.
static String	toPemFormat(PrivateKey privateKey) Transform the given private key that is in PKCS1 format and returns a String object in pem format.
static byte[]	toPKCS1Format(PrivateKey privateKey) Transform the given private key to PKCS#1 format and returns it as an byte array

Methods inherited from class java.lang.Object

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

Constructor Detail

PrivateKeyExtensions

public PrivateKeyExtensions()

Method Detail

getKeyLength

public static int getKeyLength(PrivateKey privateKey)

Gets the key length of the given PrivateKey.

Parameters:

privateKey - the private key

Returns:

the key length

getKeySize

public static de.alpharogroup.crypto.key.KeySize getKeySize(PrivateKey privateKey)

Gets the KeySize of the given PrivateKey or null if not found.

Parameters:

privateKey - the private key

Returns:

the KeySize of the given PrivateKey or null if not found.

toHexString

public static String toHexString(PrivateKey privateKey)

Transform the given PrivateKey to a hexadecimal String value.

Parameters:

privateKey - the private key

Returns:

the new hexadecimal String value.

toHexString

public static String toHexString(PrivateKey privateKey,
                                 boolean lowerCase)

Transform the given PrivateKey to a hexadecimal String value.

Parameters:

privateKey - the private key

lowerCase - the flag if the result shell be transform in lower case. If true the result is

Returns:

the new hexadecimal String value.

toBase64

public static String toBase64(PrivateKey privateKey)

Transform the given PrivateKey to a base64 encoded String value.

Parameters:

privateKey - the private key

Returns:

the new base64 encoded String value.

toBase64Binary

public static String toBase64Binary(PrivateKey privateKey)

Transform the given PrivateKey to a base64 encoded String value.

Parameters:

privateKey - the private key

Returns:

the new base64 encoded String value.

generatePublicKey

public static PublicKey generatePublicKey(PrivateKey privateKey)
                                   throws NoSuchAlgorithmException,
                                          InvalidKeySpecException

Generate the corresponding PublicKey object from the given PrivateKey object.

Parameters:

privateKey - the private key

Returns:

the corresponding PublicKey object or null if generation failed.

Throws:

NoSuchAlgorithmException - the no such algorithm exception

InvalidKeySpecException - the invalid key spec exception

toPemFormat

public static String toPemFormat(PrivateKey privateKey)
                          throws IOException

Transform the given private key that is in PKCS1 format and returns a String object in pem format.

Parameters:

privateKey - the private key

Returns:

the String object in pem format generated from the given private key.

Throws:

IOException - Signals that an I/O exception has occurred.

toPKCS1Format

public static byte[] toPKCS1Format(PrivateKey privateKey)
                            throws IOException

Transform the given private key to PKCS#1 format and returns it as an byte array

Parameters:

privateKey - the private key

Returns:

the byte array formatted in PKCS#1

Throws:

IOException - Signals that an I/O exception has occurred

fromPKCS1ToPemFormat

public static String fromPKCS1ToPemFormat(byte[] privateKeyPKCS1Formatted)
                                   throws IOException

Transform the given byte array(of private key in PKCS#1 format) to a PEM formatted String.

Parameters:

privateKeyPKCS1Formatted - the byte array(of private key in PKCS#1 format)

Returns:

the String in PEM-Format

Throws:

IOException - Signals that an I/O exception has occurred