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I di not initiate encrypt files programme - yet some of my files have been encrypted. I have never used a password nor know the 'supervisor' password. It is most annoying and concerns the files I have created!

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  • ranikalha Jul 14, 2009

    No. My Laptop Reference number is: Aspire 5634WLMi.

    This problem has just crept in over the last say 3 - 4 months ad appears to have locked just a few files at ramdom.

  • Chris Hingee
    Chris Hingee May 11, 2010

    Has someone been using your computer and setup a password and encryption?

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I encrypted some of my personal files and I dont know the password or the supervisor password? What can I do?


One of the nice things about encryption, is NO ONE unless they have a lot of time and a big computer can decrypt the information. If you lose the password, your done, sorry.

Oct 01, 2011 | Acer Aspire 4520-5582 Notebook

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PDF encryption, set PDF password and recover PDF password


PDF encryptionGenerally, PDF files are with a password called User Password, which is used to open the file and view the document. To encrypt a PDF password does not simply mean you can’t open and view the document, but PDF files have five to seven encryption ways to protect the file for office needs. Owner password, the other password of PDF files, is another crucial PDF password, which is to protect the file from maybe being copied (to Clipboard), printed, or modified, etc. So, in speaking of PDF password, it doesn’t necessary mean the one which you use to open the file.
PDF encryption largely relies on the sophisticated algorithm that hardly to be reversed. For example, you are easy to calculate that 1000 plus 1 is 1001, however, the reverse is seemed impossible, for 1001 can be an answer of countless calculations. PDF encryption works in the similar way. In this sense, given a password, it’s easy to deduce and decipher some data; however, the reverse PDF password recovery seems impossible.
Generally speaking PDF encryption with 128 bits key value is much more secure than that of 32 bits. PDF encryption is accomplished by a key value, either 128 or 32 bits in size. When using the key, all the bytes are changed (unless they are decoded back with the same key) into meaningless codes, and the file is impossible to be opened. Only the meaningless codes are calculated back using the correct value is it possible to get the correct password and open the file. 128 bits has a lot more possible values than the one with 32 bits, so it is much more secure. If your password is forgotten and intend to recover PDF password, PDF Password Unlocker software could be faster, for it supports 128 bits encryption, either 128 bits RC4 or 128 bits AES encryption.

PDF files are composed with objects, like image Objects, graphic Objects, and text Objects, etc. The key is calculated for each PDF Object in the PDF file using local data, which is much hard to crack, as the key keeps changing.
Set and remove PDF passwordsAdd a PDF Password1. Click the Secure button pdf-encryption-and-pdf-password-recovery_clip_image002.jpg in the Tasks toolbar, and choose Password Encrypt.
2. Click “Yes” to the prompt about changing the security, and if necessary, type the Permissions password that lets you change security settings. If you don’t know the password, contact the author of the PDF.
3. In the Password Security - Settings dialog box, set the security options as desired, confirm the password, click OK, and then click OK again.
4. Save the document to apply the security settings.
Note: You can also restrict editing capabilities when you certify a document, or when you apply a policy to a PDF.
Remove PDF passwords and security settingsYou can remove PDF passwords and security policies from an open PDF if you have the permissions to do so. If the PDF is secured with a security policy that resides on a server, the changes can be made only by the author of the policy or by a server administrator.
1. Do one of the following: Click the Secure button pdf-encryption-and-pdf-password-recovery_clip_image002_0000.jpg in the Tasks toolbar, and choose Remove Security.
Type your password, and click Yes to the prompt about removing the security.
In the Security tab of the Document Properties dialog box, choose No Security from the Security Method menu.
2. When prompted, specify the Permissions password, and then click OK. Recover PDF password in case you forgot it.Every coin has two sides. Even the PDF document is strongly encrypted with passwords, it is impossible to insure that it is secure. Once you forgot PDF password, the data in the encrypted PDF file are on the risk of unavailability. Unless fortunately the password knocks your memory again, you got the data lost or you have to give up the document eventually. With the ever-growing of strong encryption algorithms, decryption algorithms gradually come into existing, too. Though the cracking is far more difficulty than ever before, it is still of help to those expecting to recover PDF password and access the password protected PDF file. Take PDF Password Unlocker, a popular PDF password recovery software, for example, it has adopted the advanced decryption algorithms to crack 40-bit RC4, 128-bit RC4, 128-bit AES, and 256-bit AES encrypted passwords with 3 attack methods, Dictionary attack, Brute-force attack, and Brute-force with Mask attack
Reference: http://www.passwordunlocker.com/knowledge/pdf-encryption-and-pdf-password-recovery.html

on Apr 30, 2010 | Computers & Internet

1 Answer

Decrypting the encryption


what is it that is encrypted? more information is needed are you refering to the encryption file and the password list or do you have an encrypted hard drive? or an encrypted .rar file ultimatly you have to figure out the encryption key then revers it onto the target that is encrypted best of luck the all knowing ****

Feb 24, 2010 | Dell Inspiron 530 -Intel® Pentium®...

2 Answers

How to decrypt a file iv forgotten the password to


If you lose the password , the supervisor password is the only other key cappable of decrypting the file or try by uninstalling the edate security manager.

Oct 11, 2009 | Acer Aspire 5720-4984 Notebook

1 Answer

How do I decrypt the supervisor password on the Lanier LX-219?


You have to have another Lanier LX-219 that you know the supervisor password. Then you can enter test numbers and view the encrypted password to see how it is displayed. You can eventually break the password on the Lanier LX-219 that you don't know the password by observing the pattern on the LX-219 that you do know the password by matching the encrypted passwords on both LX-219 stations. You will find that there is a 6 digit offset on the encrypted password and the digits switch back and forth from one end of the number to the other end on the encrypted password.

Jun 19, 2009 | Audio Players & Recorders

1 Answer

DI-524 wireless router set up


Instead of using your WEP key say "Rosebud", use the hexadecimal value it creates instead. Enter it in all lower case. You should work find at that point.

Dec 09, 2008 | D-Link AirPlus DI-524 Wireless Router

1 Answer

Acer password/file decryption


that means your files have been encrypted by Acer management tools, so open up acer empower and the tools menu for encryption will be there, althogh this must have been enabled by someone in the first place.

Sep 11, 2008 | Acer Aspire 3000 Notebook

1 Answer

WEP Encryption


It is recommended to enable encryption on your wireless router before your wireless network adapters. Please establish wireless connectivity before enabling encryption. Note: Your network will slow down and wireless signal may degrade when enabling encryption due to the added overhead. Step 1 Log into the web configuration of the router by opening up a web browser and typing in the IP address of the router (192.168.0.1). Step 2 Enter your username (admin) and your password (blank by default). Click OK . Click the Home tab and click the Wireless button on the left hand side of the screen. Step 3 Select Enable next to the WEP radio buttons. For WEP encryption select 64, 128, or 256-bit encryption. For the Key type select HEX. If you have an option for Authentication type, select Shared Key. Step 4 Select Key 1. Enter a Hex encryption key that you make up. The length of the encryption key will depend on what you selected under WEP Encryption. 64-bit encryption 10 characters 128-bit encryption 26 characters 256-bit encryption 58 characters (available on DI-614+ only) The encryption key is HEX, meaning 0-9 and A-F are valid characters. For example, A4583DFF1A (64-bit HEX key). Step 5 Click on the Apply button then click on the Continue button to save your settings. Note: If using non-D-Link adapters, please refer to the manufacturer´s documentation on enabling encryption.

Feb 16, 2006 | D-Link Air Xpert DI-774 Wireless Router

1 Answer

WEP Encryption


It is recommended to enable encryption on your wireless router before your wireless network adapters. Please establish wireless connectivity before enabling encryption. Note: Your network will slow down and wireless signal may degrade when enabling encryption due to the added overhead. Step 1 Log into the web configuration of the router by opening up a web browser and typing in the IP address of the router (192.168.0.1). Step 2 Enter your username (admin) and your password (blank by default). Click OK . Click the Home tab and click the Wireless button on the left hand side of the screen. Step 3 Select Enable next to the WEP radio buttons. For WEP encryption select 64, 128, or 256-bit encryption. For the Key type select HEX. If you have an option for Authentication type, select Shared Key. Step 4 Select Key 1. Enter a Hex encryption key that you make up. The length of the encryption key will depend on what you selected under WEP Encryption. 64-bit encryption 10 characters 128-bit encryption 26 characters 256-bit encryption 58 characters (available on DI-614+ only) The encryption key is HEX, meaning 0-9 and A-F are valid characters. For example, A4583DFF1A (64-bit HEX key). Step 5 Click on the Apply button then click on the Continue button to save your settings. Note: If using non-D-Link adapters, please refer to the manufacturer´s documentation on enabling encryption.

Feb 16, 2006 | D-Link Air Xpert DI-774 (DWL-774) Wireless...

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