tupelo.cuid — tupelo 23.03.03

cuid->idx clj

(cuid->idx ctx cuid)

Inputs: [ctx :- tsk/KeyMap cuid :- s/Int] Returns: BigInteger

Given a context map and a CUID value (Cryptographic Unique ID) in [0..2^N), returns the corresponding index value, also in [0..2^N).

idx->cuid clj

(idx->cuid ctx ival)

Inputs: [ctx :- tsk/KeyMap ival :- s/Int] Returns: BigInteger

Given a context map and an index value [0..2^N), returns the corresponding CUID value (Cryptographic Unique ID), also in [0..2^N). CUID values are guaranteed to be unique for each index and pseudo-random within the interval [0..2^N).

new-ctx clj

(new-ctx opts)

Inputs: [opts :- tsk/KeyMap] Returns: tsk/KeyMap

Creates a new Cryptographic Unique ID (CUID) context map. Usage:

  (new-ctx <params-map>)

where <params-map> is of the form:

  {:num-bits     <long>  ; REQUIRED:  (minimum: 4): input/output integers in [0..2^n)
   :rand-seed    <long>  ; optional:  PRNG seed (default: randomized)
   :num-rounds   <long>  ; optional:  positive int (default: 7)
  }