Symptoms
Issue 1
Consider the following scenario:
-
You encrypt the Favorites folder (%userprofile%/Favorites) with an Elliptic curve cryptography (ECC) certificate by using the Encrypting Files System (EFS) feature on a computer that is running Windows 7 or Windows Server 2008 R2.
-
You add a webpage that has a shortcut icon (favicon.ico) to the Favorites folder.
-
You restart the computer.
In this scenario, some characters in the webpage file of the webpage that you added are displayed incorrectly. Additionally, you cannot access the webpage through the file in the Favorites folder.
Issue 2
Consider the following scenario:
-
You encrypt two files with ECC certificates by using the EFS feature on a computer that is running Windows 7 or Windows Server 2008 R2.
-
You copy one of the files, and then you paste the file that you copied to overwrite the other file.
-
You restart the computer.
In this scenario, the file that you overwrote is corrupted.
Notes
-
ECC is a public key encryption technique that you can use to create faster, smaller, and more efficient cryptographic keys.
-
These issues occur only when you use the EFS feature to encrypt files of folders with ECC certificates.
-
These issues do not occur when you use the EFS feature to encrypt files or folders with RSA certificates.
Cause
The EFS encryption feature encrypts file data in chunks of 512 bytes, and each chunk has a 16-byte initialization vector (IV). The Advanced Encryption Standard (AES) cipher algorithm in the Cipher Block Chaining (CBC) mode is used for encryption. These issues occur because the first 16 bytes of every 512-byte chunk are corrupted during encryption.
Resolution
Hotfix information
How to obtain this hotfix
This hotfix is available from the Microsoft Update website:
http://update.microsoft.comThe following files are available for download from the Microsoft Download Center:
| Operating system | Update |
|---|---|
| All supported x86-based versions of Windows 7 | |
| All supported x64-based versions of Windows 7 | |
| All supported x64-based versions of Windows Server 2008 R2 | |
| All supported IA-64-based versions of Windows Server 2008 R2 | |
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
Prerequisites
To apply this hotfix, you must be running one of the following operating systems:
-
Windows 7
-
Windows 7 Service Pack 1 (SP1)
-
Windows Server 2008 R2
-
Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
Registry information
To apply this hotfix, you do not have to make any changes to the registry.
Restart requirement
You must restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace a previously released hotfix.
File information
The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
-
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
Version
Product
Milestone
Service branch
6.1.760
0.21xxxWindows 7 and Windows Server 2008 R2
RTM
LDR
6.1.760
1.17xxxWindows 7 and Windows Server 2008 R2
SP1
GDR
-
GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Ntfs.sys | 6.1.7600.17119 | 1,210,736 | 31-Aug-2012 | 17:21 | x86 |
| Ntfs.sys | 6.1.7600.21316 | 1,210,736 | 31-Aug-2012 | 17:20 | x86 |
| Ntfs.sys | 6.1.7601.17945 | 1,211,760 | 31-Aug-2012 | 17:18 | x86 |
| Ntfs.sys | 6.1.7601.22104 | 1,212,272 | 31-Aug-2012 | 17:01 | x86 |
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Ntfs.sys | 6.1.7600.17119 | 1,656,688 | 31-Aug-2012 | 18:02 | x64 |
| Ntfs.sys | 6.1.7600.21316 | 1,680,240 | 31-Aug-2012 | 18:19 | x64 |
| Ntfs.sys | 6.1.7601.17945 | 1,659,760 | 31-Aug-2012 | 18:19 | x64 |
| Ntfs.sys | 6.1.7601.22104 | 1,687,408 | 31-Aug-2012 | 17:57 | x64 |
For all supported IA-64-based versions of Windows Server 2008 R2
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Ntfs.sys | 6.1.7600.17119 | 3,553,648 | 31-Aug-2012 | 17:02 | IA-64 |
| Ntfs.sys | 6.1.7600.21316 | 3,553,648 | 31-Aug-2012 | 17:09 | IA-64 |
| Ntfs.sys | 6.1.7601.17945 | 3,556,208 | 31-Aug-2012 | 16:54 | IA-64 |
| Ntfs.sys | 6.1.7601.22104 | 3,557,232 | 31-Aug-2012 | 16:46 | IA-64 |
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More Information
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
Additional file information
Additional file information for Windows 7 and for Windows Server 2008 R2
Additional files for all supported x86-based versions of Windows 7
| File name | X86_17f4b32e327330a2fd2ea33d07dbefec_31bf3856ad364e35_6.1.7600.21316_none_397959f6c0050407.manifest |
| File version | Not applicable |
| File size | 692 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | X86_3224d4367283c12e1df948df721ba0e7_31bf3856ad364e35_6.1.7600.17119_none_6d1d4b39a07876ae.manifest |
| File version | Not applicable |
| File size | 692 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | X86_e3073b3081ed777af47bf209f7550ea4_31bf3856ad364e35_6.1.7601.22104_none_4814395731906c71.manifest |
| File version | Not applicable |
| File size | 692 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | X86_e468c7e9bdf07a234cff8bca053d9561_31bf3856ad364e35_6.1.7601.17945_none_54310e4c44ec2354.manifest |
| File version | Not applicable |
| File size | 692 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | X86_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7600.17119_none_a69715e87e02f01c.manifest |
| File version | Not applicable |
| File size | 14,508 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 17:38 |
| Platform | Not applicable |
| File name | X86_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7600.21316_none_a71db3bb97234108.manifest |
| File version | Not applicable |
| File size | 14,508 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 17:36 |
| Platform | Not applicable |
| File name | X86_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7601.17945_none_a8592bc67b451464.manifest |
| File version | Not applicable |
| File size | 14,508 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:56 |
| Platform | Not applicable |
| File name | X86_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7601.22104_none_a90ce01994435e55.manifest |
| File version | Not applicable |
| File size | 14,508 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 17:23 |
| Platform | Not applicable |
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
| File name | Amd64_044f76ed3d5c810a899826463f9c84e8_31bf3856ad364e35_6.1.7600.21316_none_f92a8d43de62fa91.manifest |
| File version | Not applicable |
| File size | 696 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Amd64_7fc780bf6a7dd7a2fce0384108b295b5_31bf3856ad364e35_6.1.7601.17945_none_56cdf7fd7eeb0060.manifest |
| File version | Not applicable |
| File size | 696 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Amd64_8582a74e88483421d7f591f0f3ea5a06_31bf3856ad364e35_6.1.7600.17119_none_6efbfc795beb1c27.manifest |
| File version | Not applicable |
| File size | 696 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Amd64_e304853851ed4ac79ce5221e486990c1_31bf3856ad364e35_6.1.7601.22104_none_08b017440c5ca821.manifest |
| File version | Not applicable |
| File size | 696 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Amd64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7600.17119_none_02b5b16c36606152.manifest |
| File version | Not applicable |
| File size | 14,514 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:38 |
| Platform | Not applicable |
| File name | Amd64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7600.21316_none_033c4f3f4f80b23e.manifest |
| File version | Not applicable |
| File size | 14,514 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:43 |
| Platform | Not applicable |
| File name | Amd64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7601.17945_none_0477c74a33a2859a.manifest |
| File version | Not applicable |
| File size | 14,514 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:42 |
| Platform | Not applicable |
| File name | Amd64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7601.22104_none_052b7b9d4ca0cf8b.manifest |
| File version | Not applicable |
| File size | 14,514 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:21 |
| Platform | Not applicable |
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
| File name | Ia64_23c0310ba068846ed9616a8a9a185732_31bf3856ad364e35_6.1.7601.17945_none_2f225afab6589b42.manifest |
| File version | Not applicable |
| File size | 694 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Ia64_2a0afb03db9b0f87c61e0862bd14fb2d_31bf3856ad364e35_6.1.7600.21316_none_603be0ac0364d82f.manifest |
| File version | Not applicable |
| File size | 694 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Ia64_2bd5c500da68d61c8634f2b449ded802_31bf3856ad364e35_6.1.7601.22104_none_0fee982f603085d6.manifest |
| File version | Not applicable |
| File size | 694 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Ia64_999be73f05927d9174338976f9c75948_31bf3856ad364e35_6.1.7600.17119_none_a23b3e42345bfa67.manifest |
| File version | Not applicable |
| File size | 694 |
| Date (UTC) | 02-Sep-2012 |
| Time (UTC) | 08:13 |
| Platform | Not applicable |
| File name | Ia64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7600.17119_none_a698b9de7e00f918.manifest |
| File version | Not applicable |
| File size | 14,511 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:36 |
| Platform | Not applicable |
| File name | Ia64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7600.21316_none_a71f57b197214a04.manifest |
| File version | Not applicable |
| File size | 14,511 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:36 |
| Platform | Not applicable |
| File name | Ia64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7601.17945_none_a85acfbc7b431d60.manifest |
| File version | Not applicable |
| File size | 14,511 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:27 |
| Platform | Not applicable |
| File name | Ia64_microsoft-windows-ntfs_31bf3856ad364e35_6.1.7601.22104_none_a90e840f94416751.manifest |
| File version | Not applicable |
| File size | 14,511 |
| Date (UTC) | 31-Aug-2012 |
| Time (UTC) | 18:12 |
| Platform | Not applicable |
