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Improved support for different alphabets in 'Substitute' operation

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This commit is contained in:
n1474335 2017-06-23 13:21:19 +00:00
parent 5c774a3ce2
commit 14b7c4bf23
2 changed files with 9 additions and 9 deletions
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14
src/core/operations/Cipher.js
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@ -608,23 +608,23 @@ const Cipher = {
/**
* Substitute operation.
*
* @param {byteArray} input
* @param {string} input
* @param {Object[]} args
* @returns {byteArray}
* @returns {string}
*/
runSubstitute: function (input, args) {
let plaintext = Utils.strToByteArray(Utils.expandAlphRange(args[0]).join()),
ciphertext = Utils.strToByteArray(Utils.expandAlphRange(args[1]).join()),
output = [],
let plaintext = Utils.expandAlphRange(args[0]).join(),
ciphertext = Utils.expandAlphRange(args[1]).join(),
output = "",
index = -1;
if (plaintext.length !== ciphertext.length) {
output = Utils.strToByteArray("Warning: Plaintext and Ciphertext lengths differ\n\n");
output = "Warning: Plaintext and Ciphertext lengths differ\n\n";
}
for (let i = 0; i < input.length; i++) {
index = plaintext.indexOf(input[i]);
output.push(index > -1 && index < ciphertext.length ? ciphertext[index] : input[i]);
output += index > -1 && index < ciphertext.length ? ciphertext[index] : input[i];
}
return output;