Difference between pages "Encase image file format" and "Data copy king"

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[[EnCase]] uses a closed format for images which is reportedly based on [http://www.asrdata.com/SMART/whitepaper.html ASR Data's Expert Witness Compression Format]. The evidence files, or E01 files, contain a physical bitstream of an acquired disk, prefixed with a '"Case Info" header, interlaced with checksums (Adler32) for every block of 64 x 512 byte sectors (32 KiB), and followed by a footer containing an MD5 hash for the entire bitstream.  Contained in the header are the date and time of acquisition, an examiner's name, notes on the acquisition, and an optional password; the header concludes with its own checksum.
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Data Copy King is one disk image hardware,DoD data wipe hardware and also used as one professional forensic disk image tool.  
  
EnCase can store media data into multiple evidence files, which are called segment files. Each segment file consist of multiple sections. Each section consist of a section start definition. This contains a section type.
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Data Copy King has build-in IDE and SATA ports and supports USB data copy with adapters, it is one 1:1 hard drive duplicator. The top features of DCK is its claimed disk image speed at 7GB/min and data wipe speed at 8GB/min and its ability to copy bad sectors/unstable drives.  
  
Up to EnCase 5 the segment file were limited to 2 GiB, due to the internal 31-bit file offset representation. This limitation was lifted using a base offset work around in EnCase 6.
 
  
At least from Encase 3 the case info header is contained in the "header" section, which is defined twice within the file and contain the same information.
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[[Image:Hard_drive_duplicator_data_copy_king.jpg|frame|Data Copy King package]]
  
With Encase 4 an additional "header2" section was added. The "header" section now appears only once, but the new "header2" section twice.
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== Universal hard drive duplicator ==
  
Version 3 of The Encase F introduced an "error2" sections that it uses to record the location and number of bad sector chunks. The way it handles the sections it can't read is that those areas are filled with zero. Then Encase displays to the user the areas that could not be read when the image was acquired. The granularity of unreadable chunks appears to be 32K.
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1, 'Universal' indicates the storage medias from hard drives to flash drives, from good storage medias to storage medias with defects such as a lot of bad sectors, unstable heads or motor after head or platter swap, clicking drives but still detected in the bios or other kind of logical failure with detected status;
  
Within Encase 5 the number of sectors per block (chunk) can vary.
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2, 'Universal' suggests a combination of multiple Data Copy related solutions such as drive health checking, data clean or data destruction;
  
Encase from at least in version 3 can hash the data of the media it acquires.
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3, 'Universal' means the wide use among different fields like data recovery field, IT after sale field, Education and training field, Government and miliary field, computer forensics field, Financial department field etc;
It does this by calculating a MD5 hash of the original media data and adds a hash section
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to the last of the segment files.
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Later versions of Encase 6 included the option to store a MD5 and/or SHA1 hash.
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4, One important thing to mention about the 'Universal' here is the green concept used, no backdoor design, physical read only, 0 training required, friendly and nice interface, Energy-saving, cost effective, etc.
 
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In EnCase 7 the EWF format was succeeded by the EnCase Evidence File Format Version 2 (EWF-EX01 and EWF-LX01).
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Guidance has made a specification of the EWF-EX01 format public.
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EnCase 7 also uses a different version of EWF-L01 then its predecessors and no longer distinguishes between fast or best compression.
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EWF-EX01 is at it's lower levels a different format then EWF-E01 and provides support for:
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* bzip compression
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* direct encryption (AES-256) of the data
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The same features are added to the new logical evidence file format (Lx01) with the exception of encryption.
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EWF-EX01, EWF-LX01 are not backwards compatible with previous EnCase products.
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== See Also ==
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[[EnCase]]
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== External Links ==
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* [https://downloads.sourceforge.net/project/libewf/documentation/EWF%20file%20format/Expert%20Witness%20Compression%20Format%20%28EWF%29.pdf Expert Witness Compression Format (EWF)].
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* [http://www.cfreds.nist.gov/v2/Basic_Mac_Image.html Sample image in EnCase, iLook, and dd format] - From the [[Computer Forensic Reference Data Sets]] Project
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[[Category:Forensics File Formats]]
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Revision as of 22:52, 6 April 2010

Data Copy King is one disk image hardware,DoD data wipe hardware and also used as one professional forensic disk image tool.

Data Copy King has build-in IDE and SATA ports and supports USB data copy with adapters, it is one 1:1 hard drive duplicator. The top features of DCK is its claimed disk image speed at 7GB/min and data wipe speed at 8GB/min and its ability to copy bad sectors/unstable drives.


Data Copy King package

Universal hard drive duplicator

1, 'Universal' indicates the storage medias from hard drives to flash drives, from good storage medias to storage medias with defects such as a lot of bad sectors, unstable heads or motor after head or platter swap, clicking drives but still detected in the bios or other kind of logical failure with detected status;

2, 'Universal' suggests a combination of multiple Data Copy related solutions such as drive health checking, data clean or data destruction;

3, 'Universal' means the wide use among different fields like data recovery field, IT after sale field, Education and training field, Government and miliary field, computer forensics field, Financial department field etc;

4, One important thing to mention about the 'Universal' here is the green concept used, no backdoor design, physical read only, 0 training required, friendly and nice interface, Energy-saving, cost effective, etc.