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Storage Card Encryption
Windows Mobile 6 Storage Card Encryption Windows Mobile 6 based Pocket PC and Smartphone devices support encryption of data stored in external removable storage cards. Specifically: Encrypt data written from the mobile device to removable media. The data will be encrypted for use on the encrypting device only. Enable "Over The Air" provisioning of encryption via Microsoft Exchange or other OTA Device Management solution. Encryption is transparent to applications and user – minus performance impacts. Desktop access to encrypted data files via Microsoft ActiveSync® (AS) file explorer. User control over mobile encryption configuration.
How to use Storage Card Encryption
Determining which files are encrypted
You will be able to tell the difference when you can remove the storage card and insert it in another device or card reader. Encrypted files will be displayed as .MENC files, with the following filename convention:
[filename].[extension].[GUID].menc
The [GUID] is the encryption key that determines whether the file can be decrypted on the device where the storage card is inserted. The .menc extension is the indicator that tells whether a file is encrypted. The purpose of the extension is to indicate that you can't open those files. A Lock icon is also associated with the encrypted files.
When you insert the storage card back to your device where the files were encrypted, the [GUID] will match with the decryption key on your device and the [GUID].menc extension will not be displayed. Encrypted files will appear just like normal files and they can be opened.
Decrypting files:
To decrypt files that are encrypted, the current solution is to transfer them from the storage card to a computer via ActiveSync or Windows Mobile Device Center, and then copy them back to the storage card after the Storage Card Encryption has been disabled on the device.
When Storage Card Encryption is enabled, the DPAPI master key (decryption key) is stored on the devices internal flash. If the device is hard rest/cold booted, the encryption key will be deleted and cannot be retrieved! When a customer is doing a Hard Reset/Cold Boot, if the device detects that Storage Card Encryption is enabled, it will give them a warning to back up the files from their card so they can be retrieved once the encryption key is deleted during the Hard Reset process. For more information, refer to the Windows Mobile 6 Storage Card Encryption FAQ at the following URL:
http://blogs.msdn.com/windowsmobile/archive/2007/03/26/windows-mobile-6-storage-card-encryption-faq.aspx
How to use Storage Card Encryption
- Windows Mobile 6-powered devices support encryption of data stored in external removable storage cards and provide the ability to remotely wipe the device.
- The encryption can either be enabled by the user or enforced through an Exchange 2007 policy.
- WARNING: If the device is Hard Reset/Cold Booted, the encryption keys will be permanently deleted and cannot be retrieved to decrypt the card! SEE THREAD BELOW FOR A SOLUTION
- Insert Storage Card into the device.
- Go to Start>Settings>System Tab>Encryption.
- Check the box that says “Encrypt files placed on the storage card.”
- Tap OK.
Determining which files are encrypted
You will be able to tell the difference when you can remove the storage card and insert it in another device or card reader. Encrypted files will be displayed as .MENC files, with the following filename convention:
[filename].[extension].[GUID].menc
The [GUID] is the encryption key that determines whether the file can be decrypted on the device where the storage card is inserted. The .menc extension is the indicator that tells whether a file is encrypted. The purpose of the extension is to indicate that you can't open those files. A Lock icon is also associated with the encrypted files.
When you insert the storage card back to your device where the files were encrypted, the [GUID] will match with the decryption key on your device and the [GUID].menc extension will not be displayed. Encrypted files will appear just like normal files and they can be opened.
Decrypting files:
To decrypt files that are encrypted, the current solution is to transfer them from the storage card to a computer via ActiveSync or Windows Mobile Device Center, and then copy them back to the storage card after the Storage Card Encryption has been disabled on the device.
- To disable Storage Card Encryption:
- Go to Start>Settings>System Tab>Encryption.
- Uncheck the box that says “Encrypt files placed on the storage card.”
- Tap OK.
When Storage Card Encryption is enabled, the DPAPI master key (decryption key) is stored on the devices internal flash. If the device is hard rest/cold booted, the encryption key will be deleted and cannot be retrieved! When a customer is doing a Hard Reset/Cold Boot, if the device detects that Storage Card Encryption is enabled, it will give them a warning to back up the files from their card so they can be retrieved once the encryption key is deleted during the Hard Reset process. For more information, refer to the Windows Mobile 6 Storage Card Encryption FAQ at the following URL:
http://blogs.msdn.com/windowsmobile/archive/2007/03/26/windows-mobile-6-storage-card-encryption-faq.aspx
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Latest page update: made by Sgarrela
, Sep 19 2010, 7:40 PM EDT
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Keyword tags:
Decryption
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storage card
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| Started By | Thread Subject | Replies | Last Post | ||
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| watti | Windows Mobile Photo Encryption - encrypt photos on storage card | 0 | Nov 3 2010, 10:14 PM EDT by watti | ||
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Thread started: Nov 3 2010, 10:14 PM EDT
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Windows Mobile Photo Encryption, encrypt your mobile pictures
http://www.wmkits.com/wmkits-photo-encryption-for-windows-mobile.html Encrypt your sensitive mobile phone photos easily, keep all important windows mobile pictures private and safe. As a photo encryption software for Windows Mobile phone, WMkits Photo Encryption helps windows mobile phone users to encrypt all their mobile phone photos, images and keep them safe with password protection, photos files formats including [b]jpg, png, bmp, gif, pcx, tga, tgf, sgi, tif, jp2, ldf, lwf, ico and psd[/b] etc. You can use it to decrypt your photos files with ease, too. That means, others are not able to view any of your senstive or important photos on your mobile phone without your approval, even if you lost your phone or lend your mobile phone to your friend or relative. Your privacy is safe. Key Features: - Support almost all kinds of photos and images formats encryption, including jpg, png, bmp, gif, pcx, tga, tgf, sgi, tif, jp2, ldf, lwf, ico and psd etc. - Easy to use: Encrypt/decrypt your photo files or entire folder in a few simple clicks. - Password Protection: set password on your photo files/folder and keep phone photos private and safe, against from un-authorized viewing. - Auto-scanning: auto-scans and display your phone photo files. - Utilize powerful encryption technologies - AES 128-bit encryption and 128-bit ARC4 encryption, to ensure your data safe. - Easy and convenient to decrypt for viewing/editing or to re-encrypt. - Fast encrypting/decrypting speed, up to 2.4m/sec to save your time. - Easy and safe to install/uninstall. - Simple and intuitive Interface. - Compatible: Works great for all windows mobile. - Upgrade Free; Free customer support. Get more info from: http://www.wmkits.com/wmkits-photo-encryption-for-windows-mobile.html
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| amoghtaware | encryption | 1 | Mar 12 2010, 2:14 PM EST by denco7 | ||
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Thread started: Mar 9 2010, 8:23 AM EST
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i've formatted my phone after removing memory card now my all files are encrypted
i want those .docx files because have my pin of my account please help me how do i decrypt those menc files to normal .docx please please please
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| Freemans1 | Solution for the Storage Card Encryption Problem | 6 | Jan 19 2010, 9:45 AM EST by nusalharthy | ||
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Thread started: Nov 25 2007, 10:05 PM EST
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Sprite Backup supports WM6 Storage Card encryption. If you are using WM6 Storage Card encryption the only way to access your encrypted data after hard reset is by using Sprite Backup. Sprite Backup Version 6.1 can backup your device and the entire contents of your Storage Card even when you have WM6 Storage Card encryption enabled. This means that if you create a backup image including the contents of your card you will be able to access all your data. Use Sprite Backup Full 6.1 to:
1. Create a backup image including Storage Card contents to your PC. 2. Make sure that you use Sprite Backup encryption to password protect your backup file. 3. If your devices suffers a hard reset you can simply restore this file and access the encrypted data. 4. You may have to use file explorer to delete the encrypted files on your Storage Card before performing the restore. 5. You can also Drag and Drop your files from your backup to your Storage Card using Sprite Explorer . HTC users can also purchase the upgrade for only $10…. http://www.spritesoftware.com/store/index.php?main_page=product_info&products_id=203
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