Calculate multiple hash digests for a piece of data in parallel, one algo/thread.
Project description
MtHasher
Calculate multiple hash digests for a piece of data in parallel, one algo/thread.
Based on the code of Peter Wu peter@lekensteyn.nl (https://git.lekensteyn.nl/scripts/tree/digest.py).
Usage
From CLI
Add data over STDIN and/or as arguments and select the desired algorithms:
cat data.txt | python3 -m mthasher -i data2.txt - --sha1 --sha256 -o checksums.txt
At least one algorithm is mandatory and by default the script reads from STDIN and writes to STDOUT.
From Python
The exposed API is the following
ALGORITHMS_GUARANTEED
: The tuple of the supported algorithmsHasher()
: Single-threaded hasher, takes an iterable (e.g. list of algorithms to use)MtHasher()
Multi-threaded hasher, takes an iterable (e.g. list of algorithms to use)
Both hashers expose the following API
header
: tuple of header elements ("filename" and the list of algorithms in the supplied order)algos
: tuple of supplied algorithmshash_file()
: Takes a filename or a file-like object on bytes, returns the digest tuple in same order as header (the filename is omited)hash_multiple_files()
:Takes an iterable of filenames or file-like objects on bytes,returns the generator of filename + digest tuples in same order as header, one for every input object
Example
from io import BytesIO
from mthasher import MtHasher
hasher = MtHasher(('sha1', 'md5'))
filename_header, sha1_header, md5_header = hasher.header
sha1_digest, md5_digest = hasher.hash_file('data.txt')
for filename, sha1_digest, md5_digest in hasher.hash_multiple_files(('data.txt', open('data2.txt', 'rb'), '-', BytesIO('bytesstring'))):
# First the header and then the digests
print(filename, sha1_digest, md5_digest, sep='\t')
Supported algorithms
- md5
- sha1
- sha224
- sha256
- sha384
- sha512
- sha3_224
- sha3_256
- sha3_384
- sha3_512
- blake2b
- blake2s
License
Licensed under the MIT license http://opensource.org/licenses/MIT
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- Download URL: mthasher-2.0.4.tar.gz
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- Size: 5.3 kB
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- Uploaded using Trusted Publishing? No
- Uploaded via: poetry/1.1.12 CPython/3.8.3 Linux/5.11.0-1028-gcp
File hashes
Algorithm | Hash digest | |
---|---|---|
SHA256 | 7ec05afca15e12ccca73238caf44e7aa52d2cae8a2547efe9b3657d0980ada64 |
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MD5 | 7fd642d35dafdbd3ca10c3201f364267 |
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BLAKE2b-256 | 7e942ab9c10b2260e8199cf8d9d1051ac14dc81bb22d8713b79ae26c4d6838c4 |
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- Uploaded via: poetry/1.1.12 CPython/3.8.3 Linux/5.11.0-1028-gcp
File hashes
Algorithm | Hash digest | |
---|---|---|
SHA256 | 8c37d16755a7f01b45bb08c87bb6f8843235e82ea9611c2abbca0c17de04c693 |
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MD5 | bfc3840ad0414c88093051ae0429bfa4 |
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