ewfverify - Man Page

verifies media data stored in EWF files

Synopsis

ewfverify

[-A codepage] [-d digest_type] [-f format] [-l log_filename] [-p process_buffer_size] [-h q v V w x] 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
-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.