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<html> <head> <meta http-equiv="Content-Language" content="de"> <meta name="GENERATOR" content="Microsoft FrontPage 5.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <meta name="keywords" content="polymorphic cipher encryption cryptography bpp disk"> <title>PMC Ciphers Polymorphic Encryption</title> </head> <body BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#000080" VLINK="#4040C0" ALINK="#0000FF"> <basefont face="Arial" color="#000000" size="2"> <table border="0" cellpadding="0" cellspacing="0" align="left"> <tr> <td colspan="2"> <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" width="1024"> <tr> <td><a href="http://www.pmc-ciphers.com/index.php"> <img alt="pmc-ciphers.com" border="0" src="img/header_up.jpg" width="1024" height="87"></a></td> </tr> <tr> <td background="img/header_down.jpg" width="1024" height="24"> <table border="0" cellpadding="0" cellspacing="0" align="left"> <tr> <td width="160"></td> <td width="100" align="center"> <a 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align="left" style="border-collapse: collapse" bordercolor="#111111" height="387"> <tr> <td align="center" valign="top" width="150" height="33"> BPP Disk Encryption Help <hr color="#9999CC" size="1"></td> <td bgcolor="#D0D0E0" width="10" height="33"> </td> </tr> <tr> <td height="40" width="150"> <a href="bpp_disk_installation_en.html">Installation and deinstallation</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <a href="bpp_disk_main_en.html">BPP Disk Encryption Manual</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <a href="bpp_disk_shell_extension_en.html">BPP Shell Extension Manual</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"><a href="full_versions_en.html"> Full versions</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"><hr></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td align="center" valign="top" width="150" height="33"> White Papers about BPP Disk Encryption<hr color="#9999CC" size="1"></td> <td bgcolor="#D0D0E0" width="10" height="33"> </td> </tr> <tr> <td height="40" width="150"> <img border="0" src="img/pdf_small.gif" width="24" height="24"><a href="bpp_disk_mode_of_operation_en.pdf">BPP Disk: Mode of operation (Abobe PDF document)</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <img border="0" src="img/pdf_small.gif" width="24" height="24"><a href="bpp_disk_white_paper_en.pdf">BPP Disk: White Paper (Abobe PDF document)</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"><hr></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td align="center" valign="top" width="150" height="33"> Polymorphic Cipher: Theory and test results <hr color="#9999CC" size="1"></td> <td bgcolor="#D0D0E0" width="10" height="33"> </td> </tr> <tr> <td height="40" width="150"> <a href="polymorphic_cipher.html">The Polymorphic Cipher</a> <img border="0" src="img/pdf_small.gif" width="24" height="24"><a href="description_polymorphic_cryptography.pdf">Abobe PDF version</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <img border="0" src="img/pdf_small.gif" width="24" height="24"><a href="pmc_fact_sheet.pdf">Polymorphic Cipher Fact Sheet (Abobe PDF document)</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <img border="0" src="img/pdf_small.gif" width="24" height="24"><a href="roellgen02generalizedPMCmodel.pdf">Polymorphic Cipher theory (Abobe PDF document)</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <img border="0" src="img/pdf_small.gif" width="24" height="24"><a href="512bit_block_pmc_disk_encryption_diehard_test_en.pdf">512 bit Block PMC Diehard Test Results (Abobe PDF document)</a> </td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"> <a href="http://www.adobe.com/products/acrobat/readstep2.html">Download Adobe PDF Reader from www.adobe.com</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td height="40" width="150"><hr></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td align="center" valign="top" width="150" height="33"> BPP Disk webpages<hr color="#9999CC" size="1"> </td> <td bgcolor="#D0D0E0" width="10" height="33"> </td> </tr> <tr> <td height="48" width="150"> <a href="http://www.pmc-ciphers.com/technology/index.php">All about Polymorphic Encryption at www.pmc-ciphers.com</a> </td> <td bgcolor="#D0D0E0" width="10" height="48"> </td> </tr> <tr> <td height="40" width="150"> <a href="http://www.pmc-ciphers.com/products/bpp_disk.php">BPP Disk at www.pmc-ciphers.com</a></td> <td bgcolor="#D0D0E0" width="10" height="40"> </td> </tr> <tr> <td width="150" valign="bottom" height="66"> (c) 1999-2004 PMC Ciphers, Inc.</td> <td bgcolor="#D0D0E0" width="10" height="66"> </td> </tr> </table> </td> <td width="860" bgcolor="#FFFFFF" valign="top"><a name="top"></a> <table width="850" border="0" align="center" cellpadding="0" cellspacing="5"> <tr> <td width="840" valign="top" class="txt12"> <h2>BPP Disk Online help - BPP Disk Encryption functionality</h2> <hr size="1" noshade> <h3>The BPP Disk Encryption Control Panel:</h3> <img border="0" src="img/main.jpg" width="714" height="465"> <h3>Functions:</h3> <table width="830" border="0" align="right"> <tr valign="top"> <td width="269" height="92"><a href="#add"> <img src="img/go.gif" border="0" width="15" height="10"> Add volume</a> <a href="#import"> <img src="img/go.gif" border="0" width="15" height="10"> Import volume</a> <a href="#mount"> <img src="img/go.gif" border="0" width="15" height="10"> Mount volume</a> <a href="#unmount"> <img src="img/go.gif" border="0" width="15" height="10"> Unmount (lock) volume</a> <a href="#changepass"> <img src="img/go.gif" border="0" width="15" height="10"> Change password</a></td> <td width="216" height="92"><a href="#remove"> <img src="img/go.gif" border="0" width="15" height="10"> Remove Volume</a> <a href="#help"> <img src="img/go.gif" border="0" width="15" height="10"> Help</a> <a href="#options"> <img src="img/go.gif" border="0" width="15" height="10"> Options</a> <a href="#minimize"> <img src="img/go.gif" border="0" width="15" height="10"> Minimize to tray</a> <a href="#info"> <img src="img/go.gif" border="0" width="15" height="10"> Info / News</a></td> </tr> </table> <a name="add"></a> <hr size="1" noshade> <h3>Add volume <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </h3> <hr size="1" noshade> <img border="0" src="img/button_add.gif" width="111" height="23"> When clicking at the button "Add volume", the following dialog box appears: <img border="0" src="img/add_dialog.gif" width="555" height="349"> Volume name (choose freely) Enter a drive label of your choice. This name will later appear in the list of drives (for non-permanent drives only). Assigned drive letter Please choose a drive letter from the pull-down menu. The pull-down menue contains only currently free drive letters. The Enterprise Edition additionally displays NTFS partitions which can be encrypted. Although it is possible to encrypt NTFS partitions on which programs are installed, it is not recommended to do so. If unmounted, the system might try to load DLLs dynamically and this will of course fail. So better use this feature with partitions which only contain data rather than installed software. Activate automatic detection If you set this checkbox to the checked state, the volume which is to be created will be identified by the built-in automatic drive scanner and is added to the list of available volumes. A drive letter is chosen dynamically each time the volume is mounted. This feature is mainly intented for the creation of volumes on removable drives like external hard disks or USB memory sticks. Automatic detection is always activated for volume files which are created on removable drives. This feature cannot be activated for raw NTFS partitions (applies only to the Enterprise Edition) File path to image file Please enter the file path where you want to physically store the new volume file. In order to choose a location for the creation of the encrypted volume image file, click at the button on the right side of the edit box. A directory picker dialog opens and you can search a suitable location. This feature is deactivated for the encryption of raw NTFS partitions (applies only to the Enterprise Edition). Total size of volume (in MBytes) The volume size can be chosen manually or by using the small up-and down arrows which are on the right side of the volume size edit box. Raw partitions have a fixed size. Consequently, this feature is deactivated for the encryption of raw NTFS partitions (applies only to the Enterprise Edition). Password Here you can enter the password to protect your encrypted volume. Please choose a long password like "Wa4X+g2#csdf89#2bDWXvtzks92m#fk6y10h". With the length of the password and the degree of uniqueness you indirectly choose the quality of the encryption: A short password like "Wa", corresponds with about 12 .. 16 bit encryption strength. Such simple passwords are very easy to crack! BPP Disk maps all password entries to 512 bit long binary representations. Each character of your entry adds 6 ... 8 password bits. Consequently, after entering approximately 80 characters, no more effective password information is added. An exception to this rule are 128 characters long HEX passwords (must be set accordingly in the Options dialog). BPP Disk expects these passwords to consist solely of hexadecimal characters. Each character contains exactly 4 password bits. Thus, after entering all 128 characters, 512 password bits are specified without executing the password mapping (hashing) process. This is a useful feature for users who utilize smart cards for password entry and who keep printed password information in two different places (common procedure in banks). <table width="100%" border="0"> <tr> <td width="6%" valign="top">!</td> <td width="94%" valign="top" class="txt12">Please make sure that nobody else but you knows your password because it is the only way to access your secured data. If you forget your password, you will never be able to access your data again!</td> </tr> </table> Password repetition The chosen password must be entered in this edit box once more. The software checks boths entries for being identical and thus prevents typing errors. HEX password: This edit box displays the internal 512 bit representation of your password. It can be copied to the clipboard. Banks use this feature to give two different persons half of the password. Each of them cannot access the data, but together they can. On the right side of this dialog there are three buttons. Here's a description of their functionality: OK <img border="0" src="img/button_ok.gif" width="111" height="23"> After entering all the data to create the new encrypted volume, simply click at the OK button to save the settings and to create the encrypted volume. After the creation process is finished, you can use the new encrypted drive. Cancel <img border="0" src="img/button_cancel.gif" width="111" height="23"> If you have entered the wrong data or if you want to go back to the previous dialog, hit the Cancel button. The new settings will be discarded. Help <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing support data opens and you get more informations. <a name="import" id="involve"></a> <hr size="1" noshade> <h3>Import volume <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </h3> <hr align="JUSTIFY" size="1" noshade> <img border="0" src="img/button_import.gif" width="111" height="23"> In order to import a volume image file of an existing encrypted drive in your system, click at Import volume. The following dialog pops up: <img border="0" src="img/import_dialog.gif" width="555" height="284"> Assigned drive letter With the help of a pull-down menu you can choose from a list of free drive letters one which you want to assign the volume to. Usually the first available drive letter is already displayed. Password Please enter here the password with which you have already encrypted the volume. <table width="836" border="0"> <tr> <td valign="top" width="25">!</td> <td valign="top" class="txt12" width="801">Please make sure that nobody else but you knows your password because it is the only way to access your secured data. If you forget your password, you will never be able to access your data again.</td> </tr> </table> OK <img border="0" src="img/button_ok.gif" width="111" height="23"> After entering all the data to import the new encrypted volume, simply click at the OK button to save the settings and to create the encrypted volume. After the creation process is finished, you can use the new drive. Cancel <img border="0" src="img/button_cancel.gif" width="111" height="23"> If you have entered the wrong data or if you want to go back to the previous dialog, hit the Cancel button. The new settings will be discarded. Help <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing support data opens and you get more informations. <a name="mount" id="rebind"></a> <hr size="1" noshade> <h3>Mount volume <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </h3> <hr size="1" noshade> <img border="0" src="img/button_mount.gif" width="111" height="23"> Unmounted volumes are crossed out in the list of drives in the main window. If you want to mount a currently locked volume by clicking at the volume with the left mouse button and then clicking at the "Mount volume" button, the following dialog pops up: <img border="0" src="img/mount_dialog.gif" width="516" height="195"> Assigned drive letter Choose from the pull-down menu on the right side a free drive letter. Read-only Set this box to the checked state if you want to prevent overwriting or deletion of data on your encrypted volume once it is mounted. The volume can then be used just like a CD-ROM. Password Please enter here the password with which you have already encrypted the volume. <table width="837" border="0"> <tr> <td valign="top" width="25">!</td> <td valign="top" class="txt12" width="802">Please make sure that nobody else but you knows your password because it is the only way to access your secured data. If you forget your password, you will never be able to access your data again.</td> </tr> </table> OK <img border="0" src="img/button_ok.gif" width="111" height="23"> After entering all the data to mount the new encrypted volume, simply click at the OK button to save the settings and to perform the desired function. After the mounting process is finished, you can use the drive. Cancel <img border="0" src="img/button_cancel.gif" width="111" height="23"> If you have entered the wrong data or if you want to go back to the previous dialog, hit the Cancel button. The new settings will be discarded. Help <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing support data opens and you get more informations. <a name="unmount" id="rebind0"></a> <a name="lock" id="lock"></a><hr align="JUSTIFY" size="1" noshade> <div align="justify"> <h3>Lock volume (unmount a mounted volume) <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </h3> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> <img src="img/button_lock.gif" width="111" height="23"> </div> In order to lock a mounted encrypted volume, mark the drive in the listbox of the BPP Disk control panel (the main window) and click at "Lock volume". The following confirmation dialog pops up: <img src="img/lock_confirm_dialog.gif" width="332" height="107"> Before you confirm with "Yes" (or äJaô if you happen to have a German version of the operating system), please close all open files on this volume. If there's still a file open or the Windows Explorer points on the drive which is to be unmounted, the software will not be able to unmount the volume. If you are uncertain, hit "no". All mounted encrypted volumes will be closed automatically at system shutdown. Please note that once you have confirmed that you want to continue the operation by clicking at "Yes", only after entering the correct password in the "Mount" dialog you will be able to access data which is stored on the encrypted volume. <table width="100%" border="0"> <tr> <td width="6%" valign="top">!</td> <td width="94%" class="txt12">If you forget your password, you will never be able to access your data again.</td> </tr> </table> <div align="justify"> <a name="changepass" id="changepass"></a> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> <h3>Change password <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </h3> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> <img src="img/button_change_pwd.gif" width="111" height="23"> </div> In order to protect an encrypted volume with a new password, mark an unmounted drive in the listbox of the BPP Disk control panel (the main window) and click at "Change password". If you want to change the password of a mounted drive, please lock (unmount) it first, then click at "Change password". Password changes are executed very rapidly because a so-called disk key is only re-encrypted. Please note that this doesn't apply to raw NTFS partitions. Unlike file-hosted volumes, these encrypted storage devices are directly encrypted with the password hash. Changing the password consequently implies a complete re-encryption of the partition! The following dialog pops up: <img src="img/change_pwd_dialog.gif" width="516" height="225"> Old password Please enter here the password with which the volume is momentarily encrypted. New password Here the new password must be entered. It is highly advisable to choose a long password like "Wa4X+g2#csdf89#2bDWXvtzks92m#fk6y10h". With the length of the password and the degree of uniqueness you indirectly choose the quality of the encryption: A short password like "Wa", corresponds to about 12 .. 16 bit encryption! Such simple passwords are very easy to crack. BPP Disk maps all password entries to 512 bit long binary representations. Each character of your entry adds 6 ... 8 password bits. Consequently, after entering approximately 80 characters, no more effective password information is added. An exception to this rule are 128 characters long HEX passwords (must be set accordingly in the Options dialog). BPP Disk expects these passwords to consist solely of hexadecimal characters. Each character contains exactly 4 password bits. Thus, after entering all 128 characters, 512 password bits are specified without executing the password mapping (hashing) process. <table width="100%" border="0"> <tr> <td width="6%" valign="top">!</td> <td width="94%" valign="top" class="txt12">Please make sure that nobody else but you knows your password because it is the only way to access your secured data. If you forget your password, you will never be able to access your data again.</td> </tr> </table> Check (password repetition) The chosen password must be entered in this edit box once more. The software checks boths entries for being identical and thus prevents typing errors. OK <img border="0" src="img/button_ok.gif" width="111" height="23"> After entering all the data to change the password, click at the OK button to save the settings and to perform the desired function. If the two lines containing the new password are not identical, you will be asked to correct your settings. After the process has finished, you can only mount the drive with the changed (new) password. Cancel <img border="0" src="img/button_cancel.gif" width="111" height="23"> If you have entered wrong data or if you want to go back to the previous dialog, hit the Cancel button. The new settings will be discarded. Help <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing support data opens and you get more informations. <div align="justify"> <a name="remove" id="remove"></a> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> Remove volume <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </div> <hr align="JUSTIFY" size="1" noshade> <img src="img/button_del.gif" width="111" height="23"> With this function you can delete and secure wipe an encrypted volume <table width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111" cellpadding="0" cellspacing="0"> <tr> <td width="6%" valign="top">!</td> <td width="94%" class="txt12">Removing an encrypted volume destroys secured data on the selected volume.</td> </tr> </table> Mark an unmounted drive in the listbox of the BPP Disk control panel (the main window) and click at "Remove Volume". The following dialog pops up: <img src="img/remove_dialog.gif" width="516" height="195"> Password Please enter here the password with which you have already encrypted the volume. OK <img border="0" src="img/button_ok.gif" width="111" height="23"> After entering all relevant data to remove the selected volume, click at the OK button to save the settings and to perform the desired function. If you have activated the secure wipe function in the Options menu, the volume will be overwritten with "noise" prior to deletion. Cancel <img border="0" src="img/button_cancel.gif" width="111" height="23"> If you have entered wrong data or if you want to go back to the previous dialog, hit the Cancel button. The new settings will be discarded. Help <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing support data opens and you get more informations. <a name="help" id="help"></a> <hr align="JUSTIFY" size="1" noshade> Help <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> <hr align="JUSTIFY" size="1" noshade> <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing specific support data opens and you can browse through the help information. <div align="justify"> <a name="options" id="options"></a> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> Options <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </div> <hr align="JUSTIFY" size="1" noshade> <img src="img/button_options.gif" width="111" height="23"> The following dialog opens when you click at the "Options" button in the main window: <img src="img/options_dialog.gif" width="614" height="347"> With this dialog you can set options which affect the appearance and characteristics of the program. You can increase the security when deleting a volume image file, choose which type of password entry you want to use and you can customize system settings. Changing standard options is only advisable for advanced users. Here's a short description of the individual topics: Overwrite image files after deletion of volumes with random numbers In case you want to remove encrypted volumes and you want to make forensic analysis of your computer impossible, choose "Yes". If your password might be known by other people, it is highly advisable to choose "Yes". Password entry with up to 128 characters length or password entry with exactly 128 hexadecimal characters BPP Disk supports standard password entry with password lengths ranging from 1 character up to 128 characters. These entries are mapped internally by a polymorphic hashing algorithm to exactly 512 bit. Alternatively, passwords can be entered as 128 characters long hexadecimal numbers. By doing this, the hash algorithm is bypassed. When new encrypted drives are created, the 128 character hex number is displayed. As an example, it could be copied into a text document, split into two pieces and subsequently stored in two different files on two different computers. If the password is lost somehow, the two pieces of the hex representation could be concatenated and pasted into the password edit line in the "Mount" dialog in order to be able to access the encrypted data which would otherwise be locked permanently. Hide password characters in all dialog boxes If set to "Yes", each password characters is displayed as an asterisk . This makes visual spying on your passwords more difficult. Search for self-detectable volumes If set to "Yes", encrypted volumes residing on removable drives are detected automatically and are displayed in the main window. Mounting of local encrypted volumes at system start On system start the BPP Disk control panel is launched automatically and the user is asked for the passwords of the encrypted volumes and raw devices which are known to the system. If no password is entered or if it is incorrect, the affected encrypted volume is not mounted to the file system.. Autostart this software at system start BPP Disk is launched at system start if this option is active. OK <img border="0" src="img/button_ok.gif" width="111" height="23"> After adjusting the settings, click at the OK button to save the settings. Cancel <img border="0" src="img/button_cancel.gif" width="111" height="23"> If you have entered the wrong data or if you want to go back to the previous dialog, hit the Cancel button. The new settings will be discarded. Help <img border="0" src="img/button_help.gif" width="111" height="23"> By clicking at this button, a dialog containing support data opens and you get more informations. <a name="minimize" id="minimize"></a> <hr align="JUSTIFY" size="1" noshade> <h3>Minimize to tray <a href="#top"><img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </h3> <hr align="JUSTIFY" size="1" noshade> <img border="0" src="img/button_minimize_to_tray.gif" width="111" height="23"> When clicking at this button on the main window, the main window is minimized to the system tray on the right side of the task bar. <img border="0" src="img/tray_dialog.gif" width="325" height="128"> When right-clicking at the vault symbol in the task bar, a menu with several convenient options opens. As shown in the screenshot above, all mounted encrypted drives can be unmounted at a touch of a button. <div align="justify"> <a name="info"></a> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> Info / News <a href="#top"> <img src="img/back.gif" alt="back to top" border="0" align="absmiddle" width="16" height="16"></a> </div> <hr align="JUSTIFY" size="1" noshade> <div align="justify"> <img src="img/button_infonews.gif" width="111" height="23"> </div> Click at this button on the main window and a web browser opens which connects to the PMC Ciphers, Inc. website. </td> </tr> </table> </td> </tr> </table> </body> </html>