Jacksum is data integrity software for working with checksums, CRCs, and message digests (hashes).
Jacksum supports 477 algorithms, including the most common cryptographic and non-cryptographic hash functions. Jacksum also supports the “Rocksoft ™ Model CRC Algorithm” to describe CRCs, so additional 1.0399*10^267 customized CRCs can be used.
Jacksum can recursively compute hashes with multiple algorithms simultaneously. Jacksum takes advantage of modern multi-processor/multi-core environments, and saves time by hashing multiple files in parallel.
Jacksum can perform a verification of hashes against a set of known hashes, and it can detect matching, non-matching, missing, and new files.
This is free and open source software.
Key Features
- 489 standard hash functions.
- Customizable CRCs from 1 to 64 bit width.
- 60+ options to control Jacksum’s behavior on the command line.
- 14 standard encodings for representing hash values.
- 10 predefined styles for reading and writing files that contain hash values.
- 8600+ lines of manpage with descriptions, examples, and compatibility lists for the most common algorithms.
Website: jacksum.net
Support: GitHub Code Repository
Developer: Johann N. Löfflmann
License: GNU General Public License v3.0
Jacksum is written in Java. Learn Java with our recommended free books and free tutorials.
Related Software
| CLI Data Hashing Tools | |
|---|---|
| xxHash | Non-cryptographic hash algorithm |
| b3sum | Implementation of the BLAKE3 hash function |
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| md5 | Generate / check MD5 message digest |
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| paq | Fast BLAKE3 hashing tool for files and directories |
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| sha3sum | Keccak, SHA-3, SHAKE, and RawSHAKE checksum utilities |
| luha | Simple file checksum tool |
| filepack | File hashing and verification |
| bitrat | Fast file checksum tool supporting multiple hash algorithms |
| b2sum | Calculate BLAKE2 checksums |
| Additional tools: | |
| hashit | Generate file hashes quickly |
| hashdeep | Generate and verify file hashes |
| cksfv | Create and check sfv listings using CRC32 checksums |
| cksfv.rs | Reimplements the classic cksfv tool |
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