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Informations about the package wordhash
A PHP library for creating word-based hashes
By Marcus Bointon (@Synchro).
Hashes are functions which map arbitrary-sized data into a fixed-size value. They are effectively very large numbers that are usually presented as hexadecimal (e.g. 5d41402abc4b2a76b9719d911017c592) or base-64 strings (e.g. XUFAKrxLKna5cZ2REBfFkg).
While it's easy for a computer to spot differences between such random-looking strings, it's much harder for us humans. For example, it's difficult for you to tell whether Mk3PAn3UowqTLEQfNlol6GsXPe+kuOWJSCU0cbgbcs8 and Mk3PAn3UowqTLEQfNlo16GsXPe+kuOWJSCU0cbgbcs8 are the same simply by looking at them (they're not!). Sometimes you want a human-readable hash function that makes differences more obvious, and that's what this library provides.
This library uses a truncated SHA-512/256 hash, and maps it into words drawn from a dictionary of 4096 common English words (a random subset of this dictionary). The string hello produces a hash of three-straps-solved-clutch-groove-abode, and that's fairly easy for humans to tell apart from three-straps-solved-lagoon-groove-abode.
Like all good hash functions, it produces wildly different output when presented with only very small differences in the input; hellp produces zlotys-south-remark-lier-rewind-accept.
You can choose how many words it generates (up to 21, equivalent to a 252-bit hash), and what separators appear between the words. It's also possible to substitute your own dictionary.
Security warning!
This is not intended for high-performance or cryptographic purposes; do not hash your passwords with this function!
Usage
All methods are static, so there's no need to create an instance.
The generate() method takes three parameters:
- The string to hash (required)
- The number of words to use (optional, between 1 and 21, defaults to 5, the equivalent of a 45-bit hash)
- The separator to use between words (optional, defaults to
-)
Example output
If you don't like the default words, or want to use emoji, HTML snippets, a different language, or something else, you can provide your own dictionary. It must contain exactly 4096 unique return-delimited words (see the provided dictionary.txt for reference). The words don't need to be in any particular order, though the provided one is sorted alphabetically.
Developer info
Requires PHP 7.4+
🧹 Lint the code using PHP Codesniffer:
⚗️ Run static analysis using PHPStan or Psalm:
✅ Run unit tests using Pest
🚀 Run the entire test suite:
Project layout based on Skeleton PHP by Nuno Maduro under the MIT license.
All versions of wordhash with dependencies
ext-hash Version *
ext-json Version *