#id #uuid #unique #shortid #uuid-v4

bin+lib uuid-readable-rs

Easy to remember unique sentences acting as UUID

6 releases

0.1.5 Aug 9, 2021
0.1.4 Aug 8, 2021

#27 in #unique

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Easy to remember unique sentences acting as UUID

AGPL License crates.io Released API docs

Generate easy to remember sentences that acts as human readable UUIDs.

  • Built on UUID v4
  • Optionally pass your UUID to derive a sentence from it
  • Grammatically correct sentences
  • Easy to remember (or at least part of it)
  • Size choice (32-bit token or 128-bit token using short() or generate() respectively)


This project does not mean to be crypto safe ! Don't use this as a secure random generator.

Even if we derive sentences from UUID (that are crypto safe), there can still be some collision with 2 different UUID but resulting in the same sentence.

  • 25^12 possible combinations for generate() (uses 128-bit Token)
  • 25^5 possible combinations for short() (uses 32-bit Token)

Note that the sentence generated by generate() and the original UUID form a bijection, hence no loss of entropy.

Sentence generated

For the long - aka generate() - version, a typical sentence generated by this lib looks like:

Wildon Mollie Behka the bubbler of Arecibo moaned Chavey Haney Torbart and 10 calm kingfishers

Internally this correspond to:

  • 12 bits for a name
  • 11 bits for a name
  • 14 bits for a name
  • 13 bits for a personal noun
  • 13 bits for a place
  • 10 bits for a verb
  • 12 bits for a name
  • 11 bits for a name
  • 14 bits for a name
  • 5 bits for a number
  • 6 bits for an adjective
  • 7 bits for an animal

To ensure no loss of entropy, taking the example of the verb which represents 10 bits, this means that we used a list of verbs of at least 2^10 possibilities (1024).

For the short - aka short() - version, a typical sentence looks like:

Zink recorded by 127 large armadillos

This correspond to:

  • 6 bits for a name
  • 6 bits for a verb
  • 7 bits for a number
  • 8 bits for an adjective
  • 5 bits for an animal

Since the short version is 32 bits long and is derived from a 128-bit UUID, it is not considered as secure or as random as the long version may be. It also does not form any bijection with the original UUID.


use uuid::Uuid;
use uuid_readable_rs::{generate_from, short_from, generate, short, generate_inverse};

// You can define your own UUID and pass it to uuid_readable_rs like so
let uuid = Uuid::new_v4();
let sentence_128: String = generate_from(uuid);
let sentence_32: String = short_from(uuid);

// You can also get an UUID from a sentence that was previously generated
let original_uuid: Uuid = generate_inverse(sentence_128).unwrap();
assert_eq!(uuid, original_uuid);

// Or let uuid_readable_rs handle the Uuid generation
let sentence_128: String = generate();
let sentence_32: String = short();