RHASH
Section: User Manuals (1)
Updated: APR 2010
Page Index
NAME
rhash - calculate/check CRC32, MD5, SHA1, GOST, TTH, BTIH or other message digests.
SYNOPSIS
rhash [
option
]... [
file
]...
DESCRIPTION
RHash
(Recursive Hasher)
computes and verifies various message digests and checksums of files.
Supported hash algorithms include CRC32, CRC32C, MD4, MD5, SHA1,
SHA256, SHA512, SHA3, Tiger, DC++ TTH, BTIH, AICH, ED2K, GOST R 34.11-*,
RIPEMD-160, HAS-160, EDON-R 256/512, Whirlpool, Snefru-128/256.
The program can create and verify Magnet links
and eDonkey ed2k:// links, see --magnet and --ed2k-link options.
A dash string parameter `-' is interpreted as the standard input stream
(stdin).
By default
rhash
prints sums in SFV format with CRC32 checksum only.
The format can be changed by options --bsd, --magnet, --simple,
--printf, --template.
To output all sums use the `-a' option.
PROGRAM MODE OPTIONS
The default mode is to print checksums for all files and directory trees
specified by command line. The mode can be changed by the following options.
- -c, --check
-
Check hash files specified by command line. RHash can verify hash files in
SFV and BSD formats, standard MD5 and SHA1 files,
and text files containing magnet or ed2k links (one link per line).
Empty lines and lines starting with `;' or `#' are skipped.
In fact RHash can verify most hash files generated by itself
without formatting options --printf and --template.
- -u, --update=<hash-file>
-
Update the hash file specified by the option.
Checksums will be calculated for all files specified by command and not present
in this hash file. The calculated checksums will be appended to the
updated hash file in the format specified by formatting options.
This option can be combined with --recursive, to update a hash file for
whole directory trees.
- -k, --check-embedded
-
Verify files by crc32 sum embedded in their names.
- --torrent
-
Create a torrent file for each processed file.
- -h, --help
-
Help: print help screen and exit.
- -V, --version
-
Version: print version and exit.
- -B, --benchmark
-
Run benchmark for the selected hash algorithm(s).
HASH ALGORITHMS OPTIONS
- -C, --crc32
-
CRC32: Select CRC32 checksum algorithm.
- --crc32c
-
CRC32C: Select CRC32C checksum algorithm.
- --md4
-
MD4: Select MD4 hash function.
- -M, --md5
-
MD5: Select MD5 hash function.
- -H, --sha1
-
SHA1: Select SHA1 hash function.
- --sha224, --sha256, --sha384, --sha512
-
Select specified SHA2 hash function.
- --sha3-224, --sha3-256, --sha3-384, --sha3-512
-
Select specified SHA3 hash function.
- --tiger
-
Tiger: Select Tiger hash function.
- -T, --tth
-
TTH: Select DC++ TTH hash function.
- --btih
-
BTIH: Select BitTorrent Info Hash.
- -A, --aich
-
AICH: Select AICH hash function.
- -E, --ed2k
-
ED2K: Select eDonkey 2000 hash function.
- -L, --ed2k-link
-
eDonkey link: calculate and print eDonkey link.
- -W, --whirlpool
-
Whirlpool: Select Whirlpool hash function.
- -G, --gost12-256
-
GOST-2012: Select 256-bit GOST R 34.11-2012,
the Russian GOST standard hash function.
- --gost12-512
-
GOST-2012: Select 512-bit GOST R 34.11-2012,
the Russian GOST standard hash function.
- --gost94
-
GOST-94: Select GOST R 34.11-94, the deprecated Russian hash function.
- --gost94-cryptopro
-
GOST-94-CRYPTOPRO: Select the CryptoPro version of
the deprecated Russian GOST R 34.11-94 hash function.
- --ripemd160
-
RIPEMD-160: Select RIPEMD-160 hash function.
- --has160
-
HAS-160: Select HAS-160 hash function.
- --snefru128, --snefru256
-
SNEFRU: Select SNEFRU-128/256 hash function.
- --edonr256, --edonr512
-
EDON-R: Select EDON-R 256/512 hash function.
- -a, --all
-
Calculate all supported hash functions.
- --list-hashes
-
List names of all supported hash functions, one per line.
MISCELLANEOUS OPTIONS
- -r, --recursive
-
Recursively process directories, specified by command line.
- --file-list=<file>
-
Process given file as a file-list. Lines of this file are
interpreted as paths to files to be processed. Multiple
file lists can be specified at command line.
- -m, --message=<text>
-
Calculate message digests of the given text message.
- --follow
-
Follow symbolic links when processing directories recursively.
- -v, --verbose
-
Be verbose.
- -P, --percents
-
Show percents, while calculating or checking sums
- --skip-ok
-
Don't print OK messages for successfully verified files.
- -i, --ignore-case
-
Ignore case of filenames when updating crc files.
- --speed
-
Print per-file and the total processing speed.
- -e, --embed-crc
-
Rename files by inserting crc32 sum into name.
- --embed-crc-delimiter=<delimiter>
-
Insert specified <delimiter> before a crc sum in the --embed-crc mode,
default is white space. The <delimiter> can be a character or empty string.
- --path-separator=<separator>
-
Use specified path separator to display paths.
- -q, --accept=<list>
-
Set a comma-delimited list of extensions of the files to process.
- --exclude=<list>
-
Set a comma-delimited list of extensions of the files to exclude from processing.
- -t, --crc-accept=<list>
-
Set a comma-delimited list of extensions of the hash files to verify.
- --maxdepth=<levels>
-
Descend at most <levels> (a non-negative integer) levels of directories below
the command line arguments. `--maxdepth 0' means only apply the tests and
actions to the command line arguments.
- -o, --output=<file-path>
-
Set the file to output calculated message digests or verification results to.
- -l, --log=<file-path>
-
Set the file to log errors and verbose information to.
- --openssl=<list>
-
Specify which hash functions should be calculated using the OpenSSL library.
The <list> is a comma delimited list of hash function names, but only those
supported by openssl are allowed: md4, md5, sha1, sha2*, ripemd160 and whirlpool.
- --gost-reverse
-
Reverse bytes in hexadecimal output of a GOST hash functions.
The most significant byte of the message digest will be printed first.
Default order is the least significant byte first.
- --bt-batch=<file-path>
-
Turn on torrent batch mode (implies torrent mode). Calculates batch-torrent
for the files specified at command line and saves the torrent file to
the file-path. The option -r <directory> can be useful in this mode.
- --bt-private
-
Generate BTIH for a private BitTorrent tracker.
- --bt-piece-length
-
Set the
piece length
value for torrent file.
- --bt-announce=<announce-url>
-
Add a tracker announce URL to the created torrent file(s).
Several URLs can be passed by specifying the option mutltiple times.
This option doesn't change the BTIH message digest.
- --benchmark-raw
-
Switch benchmark output format to be a machine-readable tab-delimited text
with hash function name, speed, cpu clocks per byte.
This option works only if the --benchmark option was specified.
- -- (double dash)
-
Mark the end of command line options. All parameters following the
double dash are interpreted as files or directories. It is typically used
to process filenames starting with a dash `-'.
Alternatively you can specify './' or full path before such files,
so they will not look like options anymore.
OUTPUT FORMAT OPTIONS
- --sfv
-
Print message digests in the SFV (Simple File Verification) output format (default).
But unlike common SFV file, not only CRC32, but any message digests specified
by options can be printed.
- -g, --magnet
-
Print message digests formatted as magnet links.
- --bsd
-
Use BSD output format. Each message digest is printed on a separate line
after hash function name and file's path, enclosed in parentheses.
- --simple
-
Use simple output format. Each line will consist of
filename and message digests specified by options.
- --hex
-
Print message digests in hexadecimal format.
- --base32
-
Print message digests in Base32 format.
- --base64
-
Print message digests in Base64 format.
- --uppercase
-
Print message digests in upper case.
- --lowercase
-
Print message digests in lower case.
- --template=<file>
-
Read printf-like template from given <file>. See the --printf option.
- -p, --printf=<format>
-
Format: print
format
string the standard output, interpreting `\'
escapes and `%' directives. The escapes and directives are:
-
- \n
-
Newline.
- \r
-
Carriage return.
- \t
-
Horizontal tab.
- \\
-
A literal backslash (`\').
- \0
-
ASCII NUL.
- \NNN
-
The character which octal ASCII code is NNN.
- \xNN
-
The character which hexadecimal ASCII code is NN.
A `\' character followed by any other character is treated as an
ordinary character, so they both are printed.
- %%
-
A literal percent sign.
- %p
-
File's path.
- %f
-
File's name.
- %u or %U
-
Prefix used to print a filename, file path or base64/raw message digest as an
URL-encoded string. For example: `%uf', `%up', `%uBm', `%u@h'.
Use %u for lowercase and %U for uppercase characters.
- %s
-
File's size in bytes.
- %{mtime}
-
File's last modification time.
- %a or %A
-
AICH message digest.
- %c or %C
-
CRC32 checksum.
Use %c for lowercase and %C for uppercase characters.
- %g or %G
-
GOST R 34.11-2012 message digest.
- %h or %H
-
SHA1 message digest.
- %e or %E
-
ED2K message digest.
- %l or %L
-
EDonkey ed2k://... link.
- %m or %M
-
MD5 message digest.
- %r or %R
-
RIPEMD-160 message digest.
- %t or %T
-
TTH message digest.
- %w or %W
-
Whirlpool message digest.
- %{crc32}, %{crc32c}, %{md4}, %{md5}, %{sha1}, %{tiger}, %{tth}, %{btih},
%{ed2k}, %{aich}, %{whirlpool}, %{ripemd160}, %{has160}, %{gost94}, %{gost94-cryptopro}, %{gost12-256}, %{gost12-512}, %{sha-224}, %{sha-256}, %{sha-384}, %{sha-512}, %{sha3-224}, %{sha3-256}, %{sha3-384}, %{sha3-512}, %{edon-r256}, %{edon-r512}, %{snefru128}, %{snefru256} -
Print the specified message digest. It is printed in uppercase, if the
hash function name starts with a capital letter, e.g. %{TTH}, %{Sha-512}.
- %x<hash>, %b<hash>, %B<hash>, %@<hash>
-
Use one of these prefixes to output a message digest in hexadecimal, base32,
base64 or raw (binary) format respectively, e.g. %b{md4}, %BH or %xT.
The default output format can also be changed by renaming the program or
placing a hardlink/symlink to it with a filename containing strings `crc32',
`crc32c', `md4', `md5', `sha1', `sha224' `sha256', `sha384' `sha512',
`sha3-256', `sha3-512', `sha3-224', `sha3-384', `tiger', `tth',
`btih', `aich', `ed2k', `ed2k-link', `gost12-256', `gost12-512',
`gost94', `gost94-cryptopro', `rmd160', `has160', `whirlpool',
`edonr256', `edonr512', `snefru128', `snefru256', `sfv' , `bsd' or `magnet'.
CONFIG FILE
RHash looks for a config file
at $XDG_CONFIG_HOME/rhash/rhashrc, $HOME/.rhashrc and /etc/rhashrc.
The config file consists of lines formatted as
-
variable = value
where the
variable
can be a name of any command line option, like
magnet,
printf,
percents, etc.
A boolean variable can be set to true by a value `on', `yes' or `true',
any other value sets the variable to false.
Empty lines and lines starting with `#' or `;' are ignored.
Example config file:
# This is a comment line
percents = on
crc-accept = .sfv,.md5,.sha1,.sha256,.sha512,.tth,.magnet
AUTHOR
Aleksey Kravchenko <
rhash.admin@gmail.com>
SEE ALSO
md5sum(1)
cksfv(1)
ed2k_hash(1)
BUGS
Bug reports are welcome!
Post them to the GitHub issues page
https://github.com/rhash/RHash/issues