1 unstable release
new 0.1.0 | Mar 28, 2025 |
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#4 in #uid
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enid
An ENID (Encrypted Numeric Identifier) is a 40- or 80-bit value, which can be used as a unique identifier.
An example of a 40-bit ENID:
m6sc7n75
And an 80-bit ENID:
y3gx5gxm-mpb8ey39
ENIDs are generated by encrypting plaintext bytes so that they appear
pseudo-random. The encrypted bytes are then formatted as a variant of Base32
(Crockford's Base32) that excludes the letters i
, l
, o
, and u
. Each
group of 40 bits is represented by 8 characters and separated by a hyphen.
This crate does not yet include a method for generating ENIDs, which will be added in a future version.
Some features of ENIDs:
- Short - ENIDs are 8 or 17 characters long, compared with 36-character UUIDs.
- Uniformly distributed - sequentially-generated ENIDs are unlikely to appear similar.
- URL-safe - ENIDs can be used in URLs without percent-encoding.
Dependencies
~0–445KB