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.