Encrypted Disk 3.0 User Manual
Contents
1. In asymmetric algorithms the encryption key and the decryption key are different One is a public key by which the sender can encrypt a text and the other is a private key by which a recipient can decrypt the text Encrypted Disk User Manual Encryption algorythm Cyphertext C100110 Plaintext 101001F Decryption algorythm The most popular symmetric algorithms are the following DES Data Encryption Standard This algorithm was developed by the IBM Corporation and became wide used since 1977 It works with 64 bit data blocks The key length amounts 64 bits but actually 8 bits may be used for error detection so the real key length is 56 bits Nowadays the algorithm is a little obsolete as the length of utilized encryption keys is not enough to protect data against the breaking by exhaustively testing keys Triple DES This is the improved version of DES During the encryption process it uses the DES algorithm three times and each time different keys are applied The algorithm is more protective than DES Blowfish The algorithm was designed in 1993 by Bruce Schneier as a fast free alternative to existing encryption algorithms Since then it has been analyzed considerably slowly gaining acceptance as a strong encryption algorithm It works with 64 bit data blocks The characteristic property of the algorithm is a variable length key which amounts from 32 bits to 448 bits While the key is generated the algori2. 8 1 Encrypted Disk Properties in Windows Explorer The program adds a special tab Encrypted Disk Properties to the standard Windows Disk File properties dialog Local Disk H Properties General AutoPla Tool Hardware Sharing Ei Encrypted Disk Properties Image path UREN ESPE REE Mount at logon Off we Size 209 715 200 bytes Crypto algorithm used Advanced Encryption Starndard 4ES algorithm with key length 256 bits The upper line of the dialog displays full Image path for a mounted disks and an assigned drive letter for image file properties if the disk is not mounted this line displays the corresponding label Not mounted The next field Read only indicates whether the encrypted disk read only or not The Mount at logon field contains the list of available drive letters which can be assigned after every the user s authorization in the system If the Off item is selected then the encrypted disk will not be mounted after re authorization of the user There is a possibility to mount an encrypted disk as read only one This will be performed automatically after every authorization of the user The corresponding checkbox Mount at logon as read only drive becomes available after selecting a drive letter at the list mentioned above Encrypted Disk User Manual 26 The next field displays the size of the encrypted disk in bytes The last field Crypto algorithm used displays the algorithm by whic
3. drive letter and other parameters of mounting To continue click Next The second page the Disk Image Placement and Size Page proposes to define a place and size of the file that will contain new encrypted disk Such files are called images Encrypted Disk User Manual 13 New Encrypted Disk Wizard Disk Image Placement and Size You will need to create file to store the disk image in Image path Di Imagestvideo projects ed Image size MB 1000 The user can type the full path to a future image file on the hard disk or use the standard file browser for that goal To start the file browser click the Browse button Files of encrypted disk images have file extension ed Size of new image file is indicated in the corresponding Image size filed under the Image path field Use arrowed sliders on the right side of the field to correct the value As soon as the image file parameters are defined click the Next button to continue The third page the Disk Image Encryption Page allows defining encryption parameters for new encrypted disk The user should set the encryption algorithm and a key generation method The key generation method determines whether the encryption key will be generated on the base of an entered password or on the base of some random system event the Key from file item In the last case the key will be stored in a separated file on an external media Encrypted Disk User Manual 14 New Encr
4. Disk l base Use small pictograms for folders and images in the data base List contents of data base folders one item per line Refresh Re scan and display the contents the data base of images Toos P Search for images Run the Find Wizard that allows searching encrypted disk images not listed in the data base New Encrypted Disk Create new encrypted disk image Images Re encrypt Encrypted Re encrypt an existing encrypted disk image Disk Image Display Help contents Display the About the Program dialog 5 3 6 Utilities bar The Utilities toolbar is located on the left of the main window It is intended for fast running program s Wizards Functionality ay Search for encrypted disk images Search for images Av Create new encrypted disk New Encrpted Disk Wizard Re encrypt an existing encrypted disk Encrypted Disk User Manual 11 5 3 7 Status bar This is the undermost part of the main window The status bar displays some additional information menu hints brief description the full path of selected image files 6 Encrypted Disk Management The main goal of this program is creating and managing encrypted disks Actually the program creates an encrypted disk image file which can be represented as a normal drive letter All user data in this image is encrypted It is transparent for the user and applications which run or load files from an encrypted disk Physically image files of en
5. Disk User Manual 23 Mount image Image path OM magqesnature ed Image mount drive letter Mount for read only Mount image commenta Nature clips It indicates the full path to the selected image file on the hard disk the Image path field The pull down menu Image mount drive letter contains the full list of drive letters which are free in the system The user should select one to assign it to the encrypted disk If the disk is used as a read only then the Mount for read only checkbox should be ticked The user can add comments for the mounting image in the separated textual field Mount image comments It may help to distinguish some peculiarities of the data which stores on the encrypted disk 6 6 Unmounting encrypted disks A user can unmount an encrypted disk by any reason It does not have an influence on the data stored on this disk Unmounted disk will be just invisible in the system and nobody can work with its contents Later the user can mount the disk again and continue to work with it Please note If the encrypted disk is used by any other software then the attempt to unmount the disk will lead to displaying of the warning message In this case it is recommended to close all opened files and folders of the encrypted disk and try unmount it again Please note The Forced Unmount option can be used to unmount encrypted disks immediately but then there is a high risk of losing valuable data Use this option on
6. Encrypted Disk 3 0 User Manual Encrypted Disk User Manual 2 CONTENTS L Ab ERE NED Ra eN en enes sa es 2 Z PCP Jaren 3 2J Mol SEN KR ECUITCINCIIS encena ERE noen E Eels NED 3 a Basic Cryptosraphic Concepts seenen a er 3 Or RE NNN 4 5 1 Usina Windows System Ti areas is betales ala boel JAGGE Aae 5 52 Usine Windows Explorer icici sce seta vesnttexeiiwedeeedanearescatelavanhelcdusiead knirk 5 5 3 Faery pte Disk Manda 7 50 1 ETNA 7 SD 2 FORD 8 5 3 3 For NN 9 5 3 4 FOGED AR RE EE 9 5 3 5 NAS EE EE E 9 5 3 6 Uunue SDi E E a a E 10 SIT SEE koke I OE EE EE RE 11 6 Encrypted Disk Management iz ccionsecedersasecavenviresessasincsvendastdun naseeadendeadsbsatad dendseadupsasinedcenenn 11 6 1 Creme dd pvr 11 ERE 0 TOE dS re 16 6 3 Scarce yed diS s rv 19 OF Adding cncrypted GISKS va 4 20 6 5 Mounin encrypted disk Sirnea A a eee 21 6 5 1 Mounting via Windows System Tray rrrrnnnnrnnnnnnnnnrnvnnvrnnnnnnnensrnnnnvnnnnnnsnnnennnne 21 6 5 2 Mounting via Windows Explorer rrrrnnnnvvrrnnnnnnrrrrrrnnvrnnnnnnnnrsrnnnsrnnnnnnssnssnnnne 22 6 5 3 Mounting via Encrypted Disk Manager errrrrnrrrrrrrnvvvnvrnnnnnnrrnrrnnnnrnnnnnnsnsrsnnnne 272 66 r mme encrypted Sks vaare 23 6 6 1 Unmounting via Windows System Tray rrrrrnnnrrrnrnnrrvnvrrnnnnnrrnrrnnnnvrnnnnnnnnnsnnnne 23 6 6 2 Unmounting via Windows Explorer ssssoeeesssessssesseerrsssssssscererssssssssererssssss 24 6 6 3 Unmounting via Encrypted Disk Manager rrnnnrrnnnn
7. allows entering some notes concerning the disk usage or concerning the data stored on it Encrypted Disk User Manual 27 Properties General Image mount settings Image mount drive letter Mount for read only Mount Image commenta The third tab Image automount settings allows to set parameters of mounting which will be applied after the user s authorization in the system So the Mount at logon pull down menu provides the list of available drive letters The user can select one of them for automatically assigning it to an encrypted disk If the mounting disk is used as read only one then the corresponding Mount at logon as a read only drive checkbox should be ticked Properties General Image mount settings Mount at logon Mount at logon as read only drive All changes entered through Properties dialog will take effect by clicking the OK button at the bottom of the window Encrypted Disk User Manual 28 6 9 Sharing encrypted disks An encrypted disk can be shared like any other logical disk This opportunity allows having a server where users can keep their confidential information Only the users of the work group which shares the encrypted disk can access its contents In this case one of this group users namely the workgroup administrator who exactly performs sharing the encrypted disk should have the encryption key or know the password to control the access It will provide the confidentiality
8. crypted disks can be kept as on local disks as on network disks In last case the encryption gives the user s data the additional protection Even if ordinary network security tools are broken the image files will be left as encrypted ones and therefore inaccessible without the encryption key This chapter describes operations that a user can perform on encrypted disks 6 1 Creating encrypted disks Creating new encrypted disks is realized with New Encrypted Disk Wizard There are three ways to start it e Through Windows System Tray 1 Right click the Encrypted Disk icon in System Tray 2 Select the New Encrypted Disk Wizard item in the pull up menu e Through the Windows desktop 1 Right click on the Windows desktop 2 Select the New item in the context menu 3 Select the Encrypted Disk Image item e Through Encrypted Disk Manager Click the New Encrypted Disk Wizard button in the Utilities bar The first page of the Wizard the Welcome Page informs a user of the operation features Read it carefully and then click the Next button to continue Encrypted Disk User Manual 12 New Encrypted Disk Wizard Welcome to the New Encrypted Disk Wizard This wizard helps vou create new encrypted disk You will be offered to choose place For its container file so called image file its size an encryption algorithm and password The newly created encrypted disk can be mounted as logical drive And you will be able to choose a
9. d disk data See the Viewing encrypted disk properties chapter for more details Encrypted Disk User Manual Local Disk H Properties General AutoPla Tools Hardware Sharing ea Encrypted Disk Properties Image path MBA l ESPE Mount at logor Size 209 715 200 bytes Crypto algorithm used Advanced Encryption Standard 4E 5 algorithm with key length 256 bits 5 3 Encrypted Disk Manager Encrypted Disk Manager is a special tool for managing of existing encrypted disks It is available from Window s Start Menu Programs gt Encrypted Disk gt Encrypted Disk Manager e Windows System Tray the Encrypted Disk Manager item in the Encrypted Disk pull up menu 5 3 1 General layout The main window of the program can be subdivided into several parts that differ in their purposes Encrypted Disk User Manual 8 a i i TEE zp oj cks video proje Search for images D Mew Enciypted Disk izard 9 Re encrption Wizard 5 D VImages book projects ed 6 Explorer bar Encrypted disks list Tool bar Main menu Utilities bar Status bar OU ae vel ag 5 3 2 Explorer bar The Explorer bar is intended for organizing and displaying contents of the local data base of encrypted disk images in hierarchic form and quick managing encrypted disks In the data base of encrypted disk images all images are sorted in multiple categories which are displayed as data bas
10. d encrypted disk Unmount a selected encrypted disk Search for encrypted disk images Add an encrypted disk image into the current folder Delete an encrypted disk image from the current folder Create new subfolder in the current folder Move to the upper level folder Exit the program 5 3 5 Main menu The Main menu is intended for providing the unified access to the entire functionality of the program older F Create a new subfolder in this folder Available only in case of some folder was selected in the Manager s window Add Image Manually include an encrypted disk image which is not listed in the data base to this folder Note that this item does not activate the Find images Encrypted Disk User Manual 10 Wize SOS Delete Remove the image from the data base with the ability of deletion image files from a disk Rename Change a label of the encrypted disk image which represents the image in the data base Change Icon Change a pictogram that represents disk images in the data base Image properties Display and edit properties of the selected disk image Exit the Encrypted Disk Manager Actions ERE Mount Mount the image of the encrypted disk selected in the Encrypted Disk List Unmount Unmount the image of the encrypted disk selected in the Encrypted Disk List View o S O Utilities Bar Show the Utilities Bar at the left of the Encrypted Disk Status bar Show the Toolbar at the bottom of the Encrypted
11. drive letter E Mount as a read only drive The operation takes just a few seconds The encrypted disk will be represented in the system as a usual local drive with an assigned drive letter 6 5 2 Mounting via Windows Explorer The user should perform the following actions 1 Select an encrypted disk image file on the local disk 2 Select the Encrypted Disk item in the context menu 3 Select the Mount item in the Encrypted Disk sub menu 4 Select a drive letter which will be assigned to the disk The Choose drive letter pull down menu is used for this It contains the full list of drive letters that are free in the system 5 Tick the Mount as a read only drive checkbox if the disk must have such a feature 6 Click the OK button The last two steps perform in the special dialog Mount Image The operation takes just a few seconds The encrypted disk will be represented in the system as a usual local drive with an assigned drive letter 6 5 3 Mounting via Encrypted Disk Manager Encrypted Disk Manager allows initiating this operation by some ways At first the user should select the image of the encrypted disk then e Select the main menu items Actions gt Mount e Click the Mount button in the tool bar e Select the Mount item in the context sensitive menu for any image in the data base After these actions the special Mount Image dialog will be opened It is a little different from the described above Encrypted
12. e folders A user is allowed to manipulate images listed in the data base e create new folders and subfolders e rename folders with the exception of default ones e delete folders with the exception of default ones The user can perform all these function within the special data base folder named Available Images The Explorer bar displays also two other special folders which have their peculiarities e The special folder named Images Overview provides the throughout list of all images in the data base generally for fast searching of lost images Within this folder no sub folders can be created and no images can be moved in e The folder named Mounted Images displays the list of all encrypted disk images that are mounted in the system The program adds new mounted images automatically Within this folder no sub folders can be created too HER Encrypted Disk User Manual 9 5 3 3 Encrypted disk list The Encrypted disk list is located on the right part of the main window It displays encrypted disk images of the folder which is selected in the Explorer bar A user is allowed to manipulate images e arbitrarily move images between folders e create new folders and subfolders e rename folders with the exception of default ones e rename images e delete folders with the exception of default ones 5 3 4 Tool bar The Tool bar provides the fast access to most frequently usable operations Functionality Mount a selecte
13. e of the entered password or on the base of some random system event the Key from file item In the last case the key will be stored in a separated file on an external media Encrypted Disk User Manual 19 Re encryption Wizard Disk Image Encryption How do you want vour disk image to be encrypted Re encrypt all image data O Change only the encryption key used for this image Encryption algorithm Triple DES Data Encryption Standard va key generatori Password vi Fields Encryption algorithm and Key generator were described in the Creating encrypted disks chapter If it is needed to change only the encryption key or password for the selected image without changing the encryption algorithm then one should select the corresponding option at the upper part of the page Change only the encryption key used for this image Click the Next button to start the re encryption operation The completing page of the Wizard informs the user of successfully creation new encrypted disk The changes will take effect right after completing the Wizard work 6 3 Searching encrypted disks The Find Wizard is intended for searching encrypted disk images on local hard disks Found images can be selectively included to the data base of Encrypted Disk Manager Encrypted Disk User Manual 20 Find Wizard Search From Folder age Image files to search For Encrypted Disk image ed Start Search Add Selected Image fi
14. h the disk was encrypted 6 8 2 Encrypted Disk Properties in ED Manager Encrypted Disk Manager provides more functionality through the Properties dialog than Windows Explorer does To call the dialog the user should initially select an encrypted disk image and then e Select the main menu items File gt Image Properties e Select the Image Properties item in the context sensitive menu The dialog has three tabs The first one General is intended to display standard information about the image file e The image file name Full path to the image on the local disk the Image path field Image size The amount of sectors in the encrypted disk the Sectors field The file type Encrypted Disk Archive for this case Properties General mage mount settings Image automount settings video projerct Image path Images wideo projects ed Image size 1000 Mb Sectors 2048000 Image type Encrypted Disk Archive The second tab Image mount settings is intended to set mounting parameters for the image file So from this tab the user can mount an encrypted disk as a local drive with any of available drive letters the Image mount drive letter field contains the full list of drive letters which are free to assign in the system The Mount for read only checkbox allows mounting an encrypted disk as read only one It can be helpful if the user is not going to change the disk contents The Mount image comments textual field
15. he tool bar e Select the Add image item in the context sensitive menu for any of data base folders After these actions the standard Open file dialog will be opened Encrypted Disk User Manual 21 Look im B Images v a Fi ET Gil My Recent Documents H avi pro FE book projects Desktop Ga nature video projects p video projects My Documents File name video projects My Network Files of type Encrypted Disk images ed Select the necessary image file to make it available for the program 6 5 Mounting encrypted disks An encrypted disk should be mounted in order to be accessible in the system as a drive letter The program allows mounting up to 23 encrypted disks at the same time There are three ways to mount encrypted disks 6 5 1 Mounting via Windows System Tray The user should perform the following actions 1 Right click the Encrypted Disk icon in System Tray 2 Select the Mount item in the pull up menu 3 Select the image file of the encrypted disk which will be mounted 4 Select a drive letter which will be assigned to the disk The Choose drive letter pull down menu is used for this It contains the full list of drive letters that are available in the system 5 Tick the Mount as a read only drive checkbox if the disk must have this feature 6 Click the OK button The last two steps perform in the special dialog Mount Image Encrypted Disk User Manual 22 Mount Image Choose
16. isk Manager allows initiating this operation by some ways At first the user should select an image of the mounted encrypted disk then e Select the main menu items Actions gt Unmount e Click the Unmount button in the tool bar e Select the Unmount item in the context sensitive menu for any image in the data base After these actions the program informs of successful unmounting the disk There is a possibility to unmount all encrypted disk To perform this operation select in the main menu Actions gt Unmount All 6 7 Formatting encrypted disks Like any other logical drive in the system a mounted encrypted disk should be formatted The program supports the following file system types e FAT e FAT32 e NTFS The formatting operation is realized by the standard Windows tool To format the encrypted disk the user should 1 Select it in Windows Explorer or in any other Windows file browser which supports such an operation 2 Select the Format item in the context menu 3 Define formatting parameters in the Format drive letter dialog The encrypted disk does not need any special parameters for this operation 4 Click the Start button Encrypted Disk User Manual 25 6 8 Viewing encrypted disk properties The program allows viewing properties of an encrypted disk This operation can be performed both through Windows Explorer and through Encrypted Disk Manager The properties dialog will differ for each of these variants 6
17. les to current folder Images Found Size Di Imagestavi pro ed 200 MB Di Images book projects ed 1000 ME BO Images nature ed 500 MB De Imagestvyideo projects ed 1000 MB Di Imagestvideo projects ed 1000 MB gt Back Finish Cancel Use the Find Wizard in the following manner 1 Start the Find Wizard click the corresponding button in the Utilities bar Select a top level folder or a disk to be scanned in the field named Search from folder The Find Wizard will scan this folder and all of its subfolders Press the Start search button to begin searching images The program will display found images in the list labeled Images found 5 One can stop scanning before the process ends by pressing the Stop button located on the bottom of the window 6 Select images that should be included to the database 7 Then press the button Add selected images to current folder ve The program will insert selected images to the current folder of the Encrypted Disk Manager s data base Duplicates will be ignored 6 4 Adding encrypted disks In some cases it is necessary to add encrypted disk images created on another computer or images whose location has been changed It can happen for instance when an image file 1s moved or it is located on removable media To add such an image run Encrypted Disk Manager and then use one of the following ways e Select the main menu items File gt Add image e Click the Add image button in t
18. ly in case of desperate necessity for example when your private data may be under threat of outside intrusion There are three ways to unmount an encrypted disk 6 6 1 Unmounting via Windows System Tray The user should perform the following actions 1 Right click the Encrypted Disk icon in System Tray Encrypted Disk User Manual 24 2 Select the Disks item in the pull up menu 3 Select the drive letter in the appeared list 4 Select the Unmount item in the sub menu The operation takes just a few seconds The encrypted disk disappears from the system but all its data will be kept without any changes There is a possibility to unmount all encrypted disk To perform this operation follow the next steps 1 Right click the Encrypted Disk icon in the System Tray 2 Select the Disks item in the pull up menu 3 Select the Unmount All item in sub menu By this action the user unmounts all encrypted disks mounted in the system 6 6 2 Unmounting via Windows Explorer The user should perform the following actions 1 Select the encrypted disk represented as a drive letter in the system 2 Select the Encrypted Disk item in the context menu 3 Select the Unmount item in the Encrypted Disk sub menu The drive letter will be unassigned from the encrypted disk and it becomes inaccessible as a local drive Later the user can mount the disk again and continue working with it 6 6 3 Unmounting via Encrypted Disk Manager Encrypted D
19. nfirm it Encrypted Disk User Manual 16 Creating image video projects ed J Enter password Confirm password Cancel Please note There are some rules which allow to select reliable passwords For example e tis recommended to use long passwords that contain both characters and numbers e Characters should be entered in upper and in lower cases e Avoid using a regular word as a password If the Format after creation option is selected on the Mount the encrypted disk Page then the Wizard will propose to define formatting parameters and then by completing the form new disk will be formatted The completing page of the Wizard informs the user of successfully creation new encrypted disk and proposes to add it into the data base of Encrypted Disk Manager Tick the Add into Encrypted Disk Manager checkbox for that If mounting parameters were defined then new encrypted disk will appear in the system with the assigned drive letter The total number of encrypted disks to create and use are limited only by available storage space 6 2 Re encrypting disks There is a possibility to change the encryption algorithm for an existing disk The Re encrypting Wizard is specially intended for this task The Wizard also helps to set new password or new encryption key for the image The user can initiate this tool by two ways e Through Windows System Tray 1 Right click the Encrypted Disk icon in System Tray 2 Select the Re encr
20. nnnnnnnnnnrrnrnnnnnvnnnnnnnnnnsnnnne 24 6 7 Forman EAT UCU CISK S ori arrene re Elen ai 24 6 8 Viewing encrypted disk properes arien ene hare Nes 25 6 8 1 Encrypted Disk Properties in Windows Explorer ccccccsssssseeeeeeeeeeeeeees 25 6 8 2 Encrypted Disk Properties in ED Manager rrrrnnnnrrrrrvnnvrnnnnnnrrnrrnnnrvnnnnnnnnnrsnnnn 26 6 9 Sharnne AT PE SE NE 28 OLO Delete PETAR sved 28 1 About Encrypted Disk Encrypted Disk is a set of system drivers plug ins wizards and utilities to store data in an encrypted form but use these data in a common way as if they are not encrypted This software is intended for people who want to have their important information encrypted but do not have enough time to study cryptography The program has the following key features Encryption decryption on the fly with all operations absolutely transparent to the user Re encryption without moving data Protection by password or with the external key that can be placed on removable media e Place encrypted disk container files image files wherever you need on hard disks network disks or removable media Encrypted Disk User Manual 3 The program was designed on the base of Encrypted Disk SDK which is a separate software product intended for Windows application development 2 Package Components The installation package of the program includes System Drivers and Crypto Plug ins Plug ins to Windows Explorer Window
21. ns on them open unmount Help Open this manual Starts the About window Exit Close the program In this case the program icon disappears from Windows System Tray 5 2 Using Windows Explorer During the installation the program adds new item Encrypted Disk into the File section of the Windows Explorer main menu and into the same section of the context sensitive menu if an encrypted disk or its image file is selected This menu allows mounting or unmounting a selected encrypted disk Encrypted Disk User Manual 6 Open ED Encrypted Disk Open With Send To b Cut Copy Create Shortcut Delete Rename Properties The program s drivers also allow creating new encrypted disk through the New section of the Windows Explorer context menu This sub menu is intended for creating new files of registered software Selecting the Encrypted Disk Image item the user starts New Encrypted Disk Wizard I Folder g Shortcut Briefcase VIEW j WH Microsoft Word Document Arrange Icons By Refresh Microsoft Office Access Document TA Adobe Photoshop Image E Text Document Wave Sound EH Microsoft Excel Document E Compressed zipped Folder Customize This Folder Undo Delete Ctrl 2 Properties The File Disk Properties window will have an additional tab Encrypted Disk Properties which contains information about the selected encrypted disk or the image file a file that contains the encrypte
22. of internal information the intra group information Even if the server hard disk is stolen nobody can read the information from encrypted disks like it can happen with usual partitions 6 10Deleting encrypted disks The user can delete an existing encrypted disk from the Encrypted Disk Manager data base or physically from the local hard disk To delete an image run Encrypted Disk Manager and then use one of the following ways e Select the main menu items File gt Delete e Click the Delete button in the tool bar e Select the Delete item in the context sensitive menu for any of the existing encrypted disk images The program asks the user to confirm the operation displaying the Delete Image dialog Delete Image Image path D Imagesinature ed Mount image comments Delete image from physical drive also The user can see the full path to the image file on the local disk the Image path field and read comments concerning the image file In order to delete the image physically from the hard disk the user should tick the Delete image from physical drive also checkbox If this checkbox is not ticked then the image will be deleted only from the Encrypted Disk Manager data base Click the Delete button to confirm the operation performing Please note Only unmounted encrypted disks can be deleted physically
23. s Shell Extensions Windows System Tray Menu Creation Wizard New Encrypted Disk Wizard Re encryption Wizard Encrypted Disk Manager 3 Minimal System Requirements To use the program on your computer make sure the system meets the following minimum system requirements Operating Systems Windows 98 Me 2000 XP Server 2003 Intel Pentium CPU or its equivalent with 300 MHz processor clock speed 64 MB of RAM Hard disk drive with 12MB of available space SVGA video adapter and monitor Mouse 4 Basic Cryptographic Concepts Encryption is the process of converting intelligible data into a cipher which can be decoded back into the original form The set of rules for such a converting is expressed in an algorithm Some basic algorithms may be combined to form more complex ones For instance basic algorithms may change the order of the individual symbols or replace the symbols by other symbols A cipher that is produced by simultaneously converting a group of intelligible data bits into a group of cipher bits is called a block cipher In general the groups have the same size In order to encrypt the data a cipher algorithm uses so called encryption key An encryption key is a sequence of values that are chosen randomly The type and length of this sequence depend upon the encryption algorithm and the amount of security needed If the user can encrypt data and decrypt it with a single key then such a cipher algorithm is termed symmetric
24. so mounted later after creation Encrypted Disk User Manual 15 New Encrypted Disk Wizard Mount the encrypted disk Do you want your disk image to be mounted as local drive Mount after creation Format after creation Mount at logon oF w There are four options which can be defined by user on this page Mount after creation Tick this option to mount the creating disk image as a local drive and then define which drive letter will be assigned to it The list of available drive letters is represented as a pull down menu on the right Format after creation Tick this option to format new disk Mount at logon Tick this option to mount new disk after every logon of the user The pull down menu allows selecting a drive letter The checkbox on the right allows mounting the disk as a read only one Click the Next button to start creating new encrypted disk image It takes 2 3 minutes In some cases new encryption disk settings may require to specify parameters during the operation So if the Key from file value was selected as a key generator on the Disk Image Encryption Page then the Wizard will propose to define a safe place for encryption key storing Please note It is recommended to store it on removable media It decreases a chance of the unauthorized access to data If the Password value was selected as a key generator on the Disk Image Encryption Page then the Wizard will propose to enter the password and then co
25. thm uses 521 encryption cycles what severely embarrasses the breaking by exhaustively testing keys Blowfish works much faster than DES AES Advanced Encryption Standard The algorithm was designed as new federal standard of the USA instead of DES It operates data blocks of 128 192 and 256 bits and uses encryption keys with the length of 128 192 or 256 bits there are 9 possible combinations 5 Interface overview The majority of operations on encrypted disks can be performed through Windows System Tray or through Windows Explorer For that the program uses a set of special drivers and Encrypted Disk User Manual 5 plug ins If a user has a considerable number of encrypted disks then they can be organized in a convenient way by using a special utility called Encrypted Disk Manager 5 1 Using Windows System Tray During the installation the program adds its icon into Windows System Tray By right click on the icon a user can start the pull up menu which provides the access to all necessary functions of the program NED Encrypted Disk Manager a New Encrypted Disk Wizard E Re encryption Wizard a Mount gt Disks i The menu items are divided into four sections Manager Disk Wizard Re encryption Re encrypt an existing encrypted disk or change Wizard the encrypted key for it Encrypted disks management Mount Mount one of existing encrypted disks Disks Access to the list of encrypted disks and operatio
26. ypted Disk Wizard Disk Image Encryption How do you want vour disk image to be encrypted Encryption algorithm Blowfish 448 Bit Key 64 Bit Block Cipher by B Schneier key generator Password Cancel The program provides the following encryption algorithms which can be selected by user from the corresponding Encryption algorithm pull down menu e Advanced Encryption Standard AES algorithm with key length 256 bits e Blowfish 448 Bit Key 64 Bit Block Cipher by B Schneier e DES Date Encryption Standart with a 56 bit key length e Triple DES with a 168 bit key length Read the Basic Cryptographic Concepts chapter for more details concerning offered algorithms The selected algorithm will use a special sequence of values a key to encrypt or decrypt data The key is generated during encrypted disk image file creation Then it can be stored in a separate file this file should be placed on a removable media a floppy disk a USB flash disk and others Select the Key from file item in the Key generator menu for this way of working with the key Another way implies entering a password by the user and following generation of the key on the base of the entered password Select the Password item in the pull down menu After completing Encryption parameters click the Next button to continue The fourth page the Mount the encrypted disk Page allows mounting new encrypted disk as a local drive New encrypted disk can be al
27. yption Wizard item in the pull up menu e Through Encrypted Disk Manager Click the Re encryption Wizard button in the Utilities bar The first page of the Wizard the Welcome Page informs a user of operation features Read it carefully and then click the Next button to continue Encrypted Disk User Manual 17 Re encryption Wizard Welcome to the Re encryption Wizard This wizard helps you re encrypt an existing encrypted disk You will be able to choose the new encryption algorithm to re encrypt the disk with IF necessary vou can also set new password For the image To continue click Next The second page the Disk Image Placement Page proposes to define the place of the existing encrypted disk image Encrypted Disk User Manual 18 Re encryption Wizard Disk Image Placement Whak encrypted disk image do you want to re encrypt Image path Di Images video projects ed The user can type the full path to the image file on the hard disk or use the standard file browser for that goal To start the file browser click the Browse button After the image file parameters are defined click the Next button to continue The third page the Disk Image Encryption Page allows changing encryption parameters for the selected encrypted disk The user can choose another encryption algorithm or change a key generation method only key generation method determines whether an encryption key will be generated on the bas
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