org.cert.cc.util
Class EncryptionUtils

java.lang.Object
  org.cert.cc.util.EncryptionUtils

public final class EncryptionUtils
extends Object

EncryptionUtils is set of helper methods for dealing with encrypted data.

© 2009 Carnegie Mellon University

Author:

Steve Scholnick

Field Summary

static String

PROVIDER The external security provider identifier

Method Summary

static void	addProvider() Adds the provider to the Security
static byte[]	convertBase64Encoded(Message message) Converts a Base64 encoded email body into binary data.
static byte[]	convertBase64Encoded(String text) Converts a Base64 encoded text into binary data.
static String	extractData(String s) Extracts data from the input String, s.
static PGPPrivateKey	findPrivateKey(PGPSecretKeyRingCollection collection, long keyId, char[] password) Returns a PGPPrivateKey from a PGPSecretKeyRingCollection.
static Set<String>	getUsers(PGPSecretKey secretKey) Returns all of the users for a PGPSecretKey

Methods inherited from class java.lang.Object

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

Field Detail

PROVIDER

public static final String PROVIDER

The external security provider identifier

See Also:

Constant Field Values

Method Detail

convertBase64Encoded

public static byte[] convertBase64Encoded(Message message)
                                   throws MessagingException

Converts a Base64 encoded email body into binary data. The text, after the first blank line, is considered. All blanks lines and any header before the first blank line are ignored.

Parameters:

message - Email Message

Returns:

Binary data

Throws:

MessagingException - If unable to convert the Message

convertBase64Encoded

public static byte[] convertBase64Encoded(String text)
                                   throws MessagingException

Converts a Base64 encoded text into binary data. The text, after the first blank line, is considered. All blanks lines and any header before the first blank line are ignored.

BouncyCastle's Base64 class does the actual decoding.

Parameters:

text - Base64 encoded textual data

Returns:

Binary data

Throws:

MessagingException - If unable to convert the text

extractData

public static String extractData(String s)
                          throws IOException

Extracts data from the input String, s. The data is extracted after the first blank line down to a line that starts with "-----END"

Parameters:

s - Input data

Returns:

Extracted data

Throws:

IOException - If unable to read from the String, unlikely.

findPrivateKey

public static PGPPrivateKey findPrivateKey(PGPSecretKeyRingCollection collection,
                                           long keyId,
                                           char[] password)
                                    throws PGPException,
                                           NoSuchProviderException

Returns a PGPPrivateKey from a PGPSecretKeyRingCollection. If the PGPPrivateKey cannot be found, null is returned.

Parameters:

collection - PGPSecretKeyRingCollection

keyId - Key Id

password - PGPPrivateKey's password

Returns:

PGPPrivateKey

Throws:

PGPException - If unable to retrieve the PGPPrivateKey

NoSuchProviderException - If unable to retrieve the PGPPrivateKey

getUsers

public static Set<String> getUsers(PGPSecretKey secretKey)

Returns all of the users for a PGPSecretKey

Parameters:

secretKey - PGPSecretKey

Returns:

Set of users

addProvider

public static void addProvider()

Adds the provider to the Security