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phadej/rc4

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Function createRC4 has a Cognitive Complexity of 35 (exceeds 5 allowed). Consider refactoring.
Open

function createRC4(N) {
  function identityPermutation() {
    var s = new Array(N);
    for (var i = 0; i < N; i++) {
      s[i] = i;
Severity: Minor
Found in rc4.js - About 5 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function createRC4 has 107 lines of code (exceeds 25 allowed). Consider refactoring.
Open

function createRC4(N) {
  function identityPermutation() {
    var s = new Array(N);
    for (var i = 0; i < N; i++) {
      s[i] = i;
Severity: Major
Found in rc4.js - About 4 hrs to fix

    Function seed has 27 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      function seed(key) {
    if (key === undefined) {
      key = new Array(N);
      for (var k = 0; k < N; k++) {
        key[k] = Math.floor(Math.random() * N);
    Severity: Minor
    Found in rc4.js - About 1 hr to fix
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