ewfverify

NAME
ewfverify - verifies media data stored in EWF files

SYNOPSIS
ewfverify [-A codepage] [-d digest_type] [-f format] [-j jobs] [-l log_filename] [-p process_buffer_size] [-hqvVwx] ewf_files

DESCRIPTION
ewfverify is a utility to verify media data stored in EWF files.

ewfverify is part of the libewf package. libewf is a library to access the Expert Witness Compression Format (EWF).

ewf_files the first or the entire set of EWF segment files

The options are as follows:

-A codepage
    the codepage of header section, options: ascii (default), windows-874, windows-932, windows-936, windows-949, windows-950, windows-1250, windows-1251, windows-1252, windows-1253, windows-1254, windows-1255, windows-1256, windows-1257 or windows-1258

-d digest_type
    calculate additional digest (hash) types besides md5, options: sha1, sha256

-f format
    specify the input format, options: raw (default), files (restricted to logical volume files)

-h  shows this help

-j jobs
    the number of concurrent processing jobs (threads), where a number of 0 represents single-threaded mode (default is 4 if multi-threaded mode is supported).

-l log_filename
    logs verification errors and the digest (hash) to the log filename

-p process_buffer_size
    the process buffer size (default is the chunk size)

-q  quiet shows minimal status information

-v  verbose output to stderr

-V  print version

-w  zero sectors on checksum error (mimic EnCase like behavior)

-x  use the chunk data instead of the buffered read and write functions.

ENVIRONMENT
None

FILES
None

EXAMPLES
ewfverify can either verify the raw storage media data or logical file data stored in EWF file(s).

  To verify the raw storage media data:

    # ewfverify floppy.E01
    ewfverify 20110801
    Verify started at: Tue Jan 11 19:21:51 2011
    This could take a while.
    Status: at 2%.
            verified 32 kB (32768 bytes) of total 1.4 MiB (1474560 bytes).
        ...
    Status: at 100%.
            verified 1.4 MiB (1474560 bytes) of total 1.4 MiB (1474560 bytes).
            completion in 1 second(s) with 1 MiB/s (1474560 bytes/second).
    Verify completed at: Tue Jan 11 19:21:52 2011
    Read: 1.4 MiB (1474560 bytes) in 1 second(s) with 1 MiB/s (1474560 bytes/second).
    MD5 hash stored in file:		ae1ce8f5ac079d3ee93f97fe3792bda3
    MD5 hash calculated over data:		ae1ce8f5ac079d3ee93f97fe3792bda3
    ewfverify: SUCCESS

  To verify logical file data:

    # ewfverify -f files logical.E01
    ewfverify 20110111
    Verify started at: Tue Jan 11 19:21:51 2011
    Single file: file1.txt
    MD5 hash stored in file:		6fef2a64afbf070a264366183698bb5e
    MD5 hash calculated over data:		6fef2a64afbf070a264366183698bb5e
        ...
    Verify completed at: Tue Jan 11 19:21:52 2011
    ewfverify: SUCCESS

DIAGNOSTICS
Errors, verbose and debug output are printed to stderr when verbose output -v is enabled. Verbose and debug output are only printed when enabled at compilation.

BUGS
Please report bugs of any kind to <joachim.metz@gmail.com> or on the project website: https://github.com/libyal/libewf/

AUTHOR

These man pages were written by Kees Mastwijk.

Alterations for distribution have been made by Joachim Metz.

COPYRIGHT

Copyright (C) 2006-2017, Joachim Metz <joachim.metz@gmail.com>.

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO
ewfacquire(1), ewfacquirestream(1), ewfexport(1), ewfinfo(1), ewfmount(1), ewfrecover(1)