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Fixed bug, made vigenere much faster

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This commit is contained in:
Tim Stallard 2017-04-04 21:01:53 +01:00
parent 6be2b7bcaa
commit 37cdd8bbc6
3 changed files with 7 additions and 7 deletions
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2
src/blocks/frequency.js
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@ -6,7 +6,7 @@ function getGroups(text, size){
.toLowerCase() .toLowerCase()
.split(/[^a-z]/) //split on any non a-z character to get words .split(/[^a-z]/) //split on any non a-z character to get words
.map((word)=>{ //turn each word into all size-length groups .map((word)=>{ //turn each word into all size-length groups
groups = [] var groups = []
for(var i = 0; i <= (word.length - size); i++){ for(var i = 0; i <= (word.length - size); i++){
groups.push(word.substr(i, size)); groups.push(word.substr(i, size));
} }

5
src/blocks/vigenereDecode.js
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@ -18,13 +18,14 @@ module.exports = {
execute: function({cipherText, key}, elem){ execute: function({cipherText, key}, elem){
var keyNums = key.split("").map(require("./util/toNum.js")); var keyNums = key.split("").map(require("./util/toNum.js"));
var i = 0;
return cipherText return cipherText
.split("") .split("")
.map(require("./util/toNum.js")) .map(require("./util/toNum.js"))
.map((int, pos, ints)=>{ .map((int, pos, ints)=>{
if(Number.isInteger(int)){ if(Number.isInteger(int)){
var realCharsPosition = ints.slice(0, pos).filter((num)=>(Number.isInteger(num))).length; i++
return (int + 26 - keyNums[realCharsPosition%key.length])%26; return (int + 26 - keyNums[i%key.length])%26;
} }
else{ else{
return int; return int;

7
src/blocks/vigenereEncode.js
View File

@ -17,20 +17,19 @@ module.exports = {
output: true, output: true,
execute: function({plaintext, key}, elem){ execute: function({plaintext, key}, elem){
var keyNums = key.split("").map(require("./util/toNum.js")); var keyNums = key.split("").map(require("./util/toNum.js"));
var i = 0;
return plaintext return plaintext
.split("") .split("")
.map(require("./util/toNum.js")) .map(require("./util/toNum.js"))
.map((int, pos, ints)=>{ .map((int, pos, ints)=>{
if(Number.isInteger(int)){ if(Number.isInteger(int)){
var realCharsPosition = ints.slice(0, pos).filter((num)=>(Number.isInteger(num))).length; i++;
return (int + keyNums[realCharsPosition % key.length]) % 26; return (int + keyNums[i % key.length]) % 26;
} }
else{ else{
return int; return int;
} }
}) })
.filter((a)=>(!Number.isNaN(a)))
.map(require("./util/toChar.js")) .map(require("./util/toChar.js"))
.join(""); .join("");
}, },