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Javad Shafique edited this page Jan 19, 2020 · 16 revisions

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Hashit Usage

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Usage

Hashit takes arguments like this:

usage: hashit [-h] [-p] [-V] [-L] [-hl] [-H hashname]
              [-e excludes [excludes ...]] [-C] [-sp] [-A] [-q] [-m] [-r]
              [-s [string]] [-d [hash]] [-l list] [-cl list list]
              [-c filename] [-o filename] [-S] [-sfv] [-bsd] [--dry-run]
              [--trace] [--strict]
              [path] [files [files ...]]

Where the options are at following:

Hashit is an hashing program which can be uses to hash and verify muliple
files on a system. I got the idea from an ubuntu iso image which have this
hash table, so i got the idea to make such a program using python.

positional arguments:
  path
  files

help:
  -h, --help            show this help message and exit
  -p, --page            Launch interactive help with python help() (for python
                        api)
  -V, --version         Print current version and exit
  -L, --license         Print license and exit
  -hl, --hash-list      Prints list of all supported hashes and exits

formats:
  -S, --size            Adds the file size to the output
  -sfv, --sfv           Outputs in a sfv compatible format
  -bsd, --bsd           output using the bsd checksum-format

settings:
  -H hashname, --hash hashname
                        Select hash use -hl --hash-list for more info
  -e excludes [excludes ...], --exclude excludes [excludes ...]
                        list of files and directories to exclude
  -C, --color           Enable colored output where it is supported
  -sp, --strip-path     Strips fullpath from the results
  -A, --append          Instead of writing to a file you will append to it
  -q, --quiet           Reduces output, (silences warnings)
  -m, --memory-optimatation
                        Enables memory optimatation (useful for large files)
  -r, --recursive       Hash all files in all subdirectories

other:
  -s [string], --string [string]
                        hash a string or a piece of text
  -d [hash], --detect [hash]
                        Enable hash detection for check
  -l list, --list list  Takes a file (list) of strings and hashes each of them
  -cl list list, --check-list list list
                        Takes two arguments, hashlist and stringlist
  -c filename, --check filename
                        Verify checksums from a checksum file
  -o filename, --output filename
                        output output to an output (file)

devtools:
  --dry-run             prints the list of files that is doing to be hashed
                        (and how) and the output type
  --trace               Print traceback of any error cathed and exit
  --strict              Exit non-zero on any errors

MIT, Copyrigth (c) 2017-2020 Javad Shafique

So if i want to hash a file called fx. icon.png in the img dir

$ hashit icon.png
eade8f2bb7fcb89d396a850b977740fd  img/icon.png

Or i wanted to hash the tests directory with lets say blake2s and write it to a file using the bsd format and then verify it

$ hashit -H blake2s -o output.txt -bsd tests/
# no need to specify the files format it detects it automaticly
$ hashit -H blake2s -c output.txt -C # or --color for -C
tests/speed.py: OK
tests/test.py: OK
tests/__init__.py: OK
tests/speed2.py: OK
tests/res/benchmarks2.json: OK
tests/res/file.json: OK
tests/res/crc_hashcollisions.txt: OK
tests/res/benchmarks.json: OK
tests/res/pycrypto_vs_hashlib.json: OK
tests/__pycache__/speed.cpython-36.pyc: OK
tests/__pycache__/speed2.cpython-36.pyc: OK
tests/__pycache__/test.cpython-36.pyc: OK
tests/__pycache__/__init__.cpython-36.pyc: OK

But maybe you don't want to hash an file but a password or a piece of text then use the -s option

$ hashit -s secret_key
73eeac3fa1a0ce48f381ca1e6d71f077
# if you just use -s it will read until you use ctrl+D (^D) 
$ hashit -s
secret_key^D
73eeac3fa1a0ce48f381ca1e6d71f077

If you want to hash multiple files with forexample a wildcard(*):

$ hashit *.txt
d41d8cd98f00b204e9800998ecf8427e empty.txt
d41d8cd98f00b204e9800998ecf8427e another_0bytefile.txt
d41d8cd98f00b204e9800998ecf8427e no_data.txt

Fun fact the -l --list option can also be used if you really want to check an file, because it reads a file line by line can it be used for checking each and every line in any file like this:

Chances of hash collisions = 0% (JDK, haven't done any statitics but technicly a lesser chances for bigger files (more lines more security!)

$ hashit -l LICENSE -o license.chk
$ hashit -cl license.chk LICENSE
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\: OK
©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©: OK
©-------------------------------------------------------------------------------©: OK
©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©: OK
MIT License                                         : OK
: OK
Copyright (c) 2020 Javad Shafique: OK
: OK
Permission is hereby granted, free of charge, to any person obtaining a copy: OK
of this software and associated documentation files (the "Software"), to deal: OK
in the Software without restriction, including without limitation the rights: OK
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell: OK
copies of the Software, and to permit persons to whom the Software is: OK
furnished to do so, subject to the following conditions:: OK
: OK
The above copyright notice and this permission notice shall be included in all: OK
copies or substantial portions of the Software.: OK
: OK
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR: OK
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,: OK
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE: OK
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER: OK
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,: OK
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE: OK
SOFTWARE.: OK
: OK
NO ONE CAN CLAIM OWNERSHIP OF THIS "SOFTWARE" AND ASSOCIATED DOCUMENTATION FILES.: OK
: OK
Icon from freepik.com all rights reserved: OK
©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©©: OK
©-------------------------------------------------------------------------------©: OK

TIP: add quotes around multi length strings to make them a single argument

From python

It also got a python-level api for those you want to integrate this into your own application

from hashit import hashFile, new

# init hashing class
hasher = new("md5")
hash_from_file = hashFile("file.txt", hasher, True) # (True) Activate memory optimatation, faster for larger files
print(hash_from_file)

print(new("sha3_256", b'DATA').hexdigest())
print(new("crc32", b'DATA').hexdigest()) # custom hashes is also supported

See extra for more customization and extended api usage from python

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