VERIFIER(1)
NAME
rdd-verify - verifies checksums and hash values generated by rddcopy(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
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 (C) 2002-2003 Netherlands Forensic Institute
This software comes with NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.