NAME

       rdd-verify - verifies checksums and hash values generated by rdd-copy(1)

SYNOPSIS

       rdd-verify [OPTION] file1 ...

DESCRIPTION

       Rdd-verify verifies checksums and hash values generated by rdd-copy(1).  Rdd stores checksums (Adler32 or
       CRC32) in files.  These files must be passed to rdd-verify for verification.

       Hash  values  (MD5  or  SHA1) computed by rdd-copy(1) must be passed to rdd-verify on the command line as
       hexadecimal strings.

       Rdd-verify reads all input files (file1, ...) and recomputes the checksums and hash values that the  user
       wishes  to  verify.   The  verification  will very likely fail if the concatenation of the input files is
       different from the source that was copied by rdd-copy(1).

OUTPUT

       All verification errors are reported on stderr.

OPTIONS

       -?, --help
              Print a usage message.

       -V, --version
              Report version number and exit.

       -v, --verbose
              Be verbose (more messages).

       -v, --verbose
              Be verbose (more messages).

       --checksum, --adler32 file
              Verify the Adler32 checksums stored in file.

       --crc, --crc32 file
              Verify the CRC32 checksums stored in file.

       --md5, --md5 digest
              Recompute the MD5 hash value.  It should be equal to digest.

       --sha, --sha1 digest
              Recompute the SHA1 hash value.  It should be equal to digest.

       A digest argument is a hexadecimal string.  Leading zeroes may not be omitted.

EXAMPLES

       rdd-verify --md5 0123456789abcdef0123456789abcdef disk.img

              Compute   the   MD5   hash   value    over    disk.img    and    verify    whether    it    equals
              0123456789abcdef0123456789abcdef.

       rdd-verify --adler32 checksums.a32 disk.img

              Compute  the  adler32  checksums  over  disk.img  and  compare  each checksum to the corresponding
              checksum in checksums.a32.

SEE ALSO

       rdd-copy(1)

REPORTING BUGS

       Report bugs to <rdd@holmes.nl>.

ACKNOWLEDGEMENTS

       Many thanks to all who reported bugs and successes, and who suggested improvements.   You  know  who  you
       are.

COPYRIGHT

       Copyright © 2002-2003 Netherlands Forensic Institute
       This software comes with NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

rdd-verify                                        February 2002                                      VERIFIER(1)