org.mailster.pop3.commands.auth
Class AuthCramMD5Command

java.lang.Object
  org.mailster.pop3.commands.Pop3Command
      org.mailster.pop3.commands.MultiStatePop3Command
          org.mailster.pop3.commands.auth.AuthAlgorithmCommand
              org.mailster.pop3.commands.auth.AuthCramCommand
                  org.mailster.pop3.commands.auth.AuthCramMD5Command

public class AuthCramMD5Command
extends AuthCramCommand

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Mailster (C) 2007-2009 De Oliveira Edouard

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

See Mailster Web Site
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AuthCramMD5Command.java - The POP3 AUTH CRAM-MD5 command (see RFCs 1734 & 2195).

Version:

$Revision: 1.4 $, $Date: 2008/12/06 13:57:16 $

Author:

Edouard De Oliveira

Field Summary

private static MD5

md5

Fields inherited from class org.mailster.pop3.commands.auth.AuthAlgorithmCommand

CHECK_RESPONSE_TO_CHALLENGE_STATE

Constructor Summary

AuthCramMD5Command()

Method Summary

java.lang.String	hmacHash(byte[] text, byte[] secret) The HMAC_MD5, according to RFC 2104, transform looks like : MD5(K XOR opad, MD5(K XOR ipad, text)) where K is a n byte key, ipad is the byte 0x36 repeated 64 times opad is the byte 0x5c repeated 64 times
static java.lang.String	hmacMD5(byte[] text, byte[] secret)

Methods inherited from class org.mailster.pop3.commands.auth.AuthCramCommand

challengeClient, checkClientResponse, isSecuredAuthenticationMethod

Methods inherited from class org.mailster.pop3.commands.auth.AuthAlgorithmCommand

execute, isValidForState

Methods inherited from class org.mailster.pop3.commands.MultiStatePop3Command

execute

Methods inherited from class org.mailster.pop3.commands.Pop3Command

tryLockingMailbox

Methods inherited from class java.lang.Object

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

Field Detail

md5

private static MD5 md5

Constructor Detail

AuthCramMD5Command

public AuthCramMD5Command()

Method Detail

hmacHash

public java.lang.String hmacHash(byte[] text,
                                 byte[] secret)

The HMAC_MD5, according to RFC 2104, transform looks like : MD5(K XOR opad, MD5(K XOR ipad, text)) where K is a n byte key, ipad is the byte 0x36 repeated 64 times opad is the byte 0x5c repeated 64 times

Specified by:

hmacHash in class AuthCramCommand

Parameters:

text - is the data being protected

secret - is the secret key

Returns:

the hex string representation of the HMAC_MD5 transformation

hmacMD5

public static java.lang.String hmacMD5(byte[] text,
                                       byte[] secret)