Big Lock - Learn How to Use Big Lock in 30 mins

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1.1 Activate Big Lock

After the product is installed, each time when the computer boots, the system will request to enter the Big Lock password to verify the identity:

Once the correct password is entered, Big Lock will be activated.

Once Big Lock is correctly activated, it will enter to the Outlook Express. The part in the red frame is the toolbar of Big Lock, as shown in the figure below:

1.2 E-Mail Encyption and Reading

  1.2.1 E-Mail Encryption

  To Encrypt the received e-mail, please follow the procedures below:

  1. Select an e0mail whcih you would like to encrypt (an e-mail from Eowyn):

      Click on the button of encrypt.

    

  2. The e-mail will be encrypted immediately. It will change from

      

    Please be aware that the original e-mail content in the red frame has already disappeared. It is replaced by enerypted information.

    [personal] EOWYN means that the e-mail is encrypted by the personal password of the computer user (EOWYN).

    (Later, you will also see that the e-mails can also be encrypted by group password.)

  3. View Attachement: There is an additional attachment: .BLSecurity. It is used by Big Lock for saving the e-mail contents. Please do not pay much attention to it.

    

  4. Encrypt multiple e-mails

        To encrypt many e-mails at once, select multiple e-mails, and click on the button of encrypt. (Currently, Only Outlook Express provides this function.)

  1.2.2 Read Encrypted E-Mails and Attachments

  Currently, you are an identified user. Therefore, even if the e-mails are encrypted, you can still read them without troubles.

  If you would like to read the encrypted e-mail, you just need to double click it (in the red frame), and a window will pop up and show the email content:

  To read the attachements, you just need to click on them (in the red frame of the figure above), and the files will be opened:

 

  From previous procedures: Even if the e-mails are encrypted, once your identity is verified, you can read the contexts and attachments of the e-mails with easiness.

  Once finished reading, close the winodws; nevertheless, they will still be encrypted.

  1.2.3 Unverified Identities

  When the identities are unverified, can the encrypted e-mails still be read?

  Note: One must enter the password and verify the identity when activating Big Lock. Therefore, unverified identity and not having Big Lock activated have the same meaning.

  1. Exit Big Lock

      Right-click the Big Lock figure from the taskbar and select Exit Big Lock from the popped out menu

     

      At this instant, the Big Lock figure on the taskbar will disappear, which means that it is closed.

  2. Read E-Mails

      Double click the e-mail (the red-framed), a window will pop out and display the e-mail content:

     

      At this moment, the e-mail content will not be decrpted (as shown in the lower right red frame).

  3. Read Attachments

      Click on the attachment (in the red frame above), and open it:

     

      At this moment, the attachment will not be decrypted, where garbled codes will be displayed (as shown in the below large red frame);

      From previous procedures: When Big Lock is not activated, the contexts and attachments of encrypted e-mails cannot be read.

  4. Restart Big Lock

      There are three ways to activate Big Lock.

      1. Using command sequence Start -> Big Lock -> Start Big Lock.

     

      2. Double-click Big Lock tray icon in notification area to open Start Big Lock window.

      3. Click Big Lock in toolbar of mail software to open Start Big Lock window. Users can use one of above three ways to open Start Big Lock window, and then enter the password:

     

      After being verified, the Big Lock figure on the taskbar will reppear. When reading e-mail at this moment, the contents and attacments will self-decrypt, as described at 1.2.2 Read Encrypted E-Mails and Attachments.

  1.2.4 E-Mail Decryption

  To decrypt encrypted e-mail(s), please follow the procedures below:

  1. Click the e-mail which you wish to decrypt.

  2. Click on the decrypt button from the toolbar, where the content and attachment of the e-mail will be decrypted.

1.3 Group Password

  1.3.1 Threats from Sniffers

  People who are familiar with the network know that the network can be sniffed easily. Internet sniffer is used to capture data being transmitted on the Internet. On the other hand, mail sniffer and mail buster are used to capture e-mails. Due to the fact that there is some personal information in the e-mails, especially there might be some confidential business related data, so once they are leaked, they will cause great harms.

  1.3.2 What is group password?

  1. In the process of delivering e-mails, most people wish that even if the mails are sniffed, no information will be leaked.

  2. The emails saved in the computers will not be ready by others, when the computer is being repaired (by people within/outside the company).

  Many products released in the market have either of the two features, or both of them. However, those products are inconvenient, so they are not attracted to the users in general. In order to reach the goal mentioned above, Big Lock invented group password, also known as shared password, to solve the problem mentioned above.

  When we are activating Big Lock, we enter the personal password, where only the person who is entering it knows. The group password has the following features:

• According to their needs, users may request Big Lock to create a group.
• Each time when it creates a group, Big Lock will automatically create a set of password.
• Users do not need to know what group password(s) is.

  1.3.3 Greate Groups

  1. Click on the Group button found in Outlook Express toolbar, the following will pop out:

 

  2. Click on the Add group button and enter the group name:

  3. The following screen will pop out to select group members:

  

  In the window, it will list all members of the address book. You can select and check the group members (the red framed) at there, and click OK.

  Note: When installing Big Lock, it will atuomatically import all contancts information either from Outlook or Outlook Express to the Big Lock system.

  4. After selecting the group members, you can use Send Group to send the group data to the group members: 

  

  Note: Please remember to add yourself into the group members list, in order to receive the e-mails send between the group members.  

  5. The sent group data also includes the group password. Due to security concern, a window will appear requesting for the password:

 

  This password should be told to other group members, either by phone or other methods, in order for them to import it to their Big Lock system.

  6. Afterwards, an e-mail will be created automatically:

 

  The recipients are all group members (at the upper red frame). In the attachment, it includes the group information (at the middle red frame). In the content, there is a link to download Big Lock (at the lower red frame).

  1.3.4 Receive Group Data

  1. If members who have received the group data and have not installed Big Lock can click Download Big Lock (English), where they can download and install Big Lock or Big Lock Reader.

  2. After Big Lock is installed, click on the group data e-mail and enter the password which was told by the sender (through phone), the the group data will be saved in the Big Lock system.

 

1.4 Sending Encrypted E-Mails

To send an encrypted e-mail, please follow the procedures below:

  1. Click on the New button from the toolbar, and select a group from the popped up window. If you do not wish to send to all members, you can select the ones which you wish to send.

 

  Note: You can send to more than one group at once.

  2. Click OK, and it will create a new mail, where you can enter the recipient(s).

 

  Note: This column contains a letter {G}, which means that this mail is encrypted by a group password.

  3. Click Send at the left corner, the system will encrypt this mail with the marketing group password and send it out. To decrypt and read this mail, its recipient(s) must have Big Lock installed and own the marketing group password.

1.5 File Encryption/Decryption

Computers are hacked by spy software and files are stolen are not news anymore. By using Big Lock, it can encrypt files avoiding information leakage even if they are stolen.

  1.5.1 File Encryption

  1. Select a file for encryption from My Computer, and right-click the mouse, where a right-button menu will appear:

 

  2. Click Encrypt file from the menu, and the file will be encrypted. A red B will appear on the figure, which means that the file is already encrypted.

  1.5.2 File Decryption

  1. Choose a file for ecryption from My Computer, and right-click the mouse, where a right-button menu will appear.

  2. Click Decrypt file from the menu, and the file will be decrypted, where the red B will be removed from the figure.

 

1.6 Automatic Encryption/Decryption

All methods described above are manual encryption/decryption methods. Big Lock also provides automatic encryption/decryption, which can save lots of efforts. By using automatic encryption/decryption:

• The frequently used applications can directly read the encrypted files without manually decrypting them before hand.
• When the frequently used applications are saving files, they can directly save them as encrypted files. There is no need to first save the file, and then manually encrypting it.

However, sometimes this automatic feature will also cause users hassles. Therefore, there is a feature called Secure Folder in Big Lock, where it only atuomatic encrypts and decrypts files saved in this folder.

  1.6.1 Creating Secure Folder

  Select a folder from My Computer, right-click the mouse, and click Enable secure folder from the appeared right-button menu. That folder will become a secure folder, which figure will appear a red B.

 

  1.6.2 Auto-Encryption While Saving File

  Use Microsoft Word to create a file and save it in Secure Folder C:\0000:

  

  After closing Word, view the file created in Secure Folder C:\0000, which will automatically be saved as an encrypted file.

  Note:

  1. The red B will not appear until Word is closed.

  2. Even if Word is closed, the letter B might still not be seen. Please press F5 to see the letter B.

  3. If the files are not saved in the secure folders, they will not be saved as encrypted files.

  1.6.3 Auto-Decryption While Accessing File

  In Secure Folder C:\0000, double click the encrypted file C.doc, where it will immediately activate the Word program. When it is reading he file, the content will decrypt automatically.

  Note: The files in the hard disk are not decrypted.

 

  After editing the file, please Save back to the hard disk.

  C.doc saved in C:\0000 will be updated and saved as an encrypted file. To verify it, you can close the Word program and double click on C.doc.

 

  1.6.4 Criteria for Automatic Encryption

  Under the following two conditions, the files can then be encrypted automatically:

  1. The files should be saved in Secure Folder.

  2. The files should be created by Application.

  In order to know the Application, one can left-click on the Big Lock figure shown at the taskbar and click on Auto-encryption. At the right side of the window, you will see the Application List.