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n1073645 2020-01-30 09:57:14 +00:00
parent d0954fc3ba
commit f46d9414cf
1 changed files with 5 additions and 5 deletions
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10
src/core/lib/HillCipher.mjs
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@ -14,7 +14,7 @@ let N = 0;
* @param {boolean} keyflag * @param {boolean} keyflag
* @returns {object} * @returns {object}
*/ */
function genMatix(theString, keyflag=false) { function genMatrix(theString, keyflag=false) {
const matrix = new Array(N).fill(0).map(() => new Array(N).fill(-1)); const matrix = new Array(N).fill(0).map(() => new Array(N).fill(-1));
let count = 0; let count = 0;
@ -198,10 +198,10 @@ export function encode(plaintext, key) {
N = Math.ceil(Math.sqrt(key.length)); N = Math.ceil(Math.sqrt(key.length));
// Generate matrix representation of the key. // Generate matrix representation of the key.
const keyMatrix = genMatix(key, true); const keyMatrix = genMatrix(key, true);
// Generate matrix representation of the plaintext. // Generate matrix representation of the plaintext.
const plaintextMatrix = genMatix(plaintext); const plaintextMatrix = genMatrix(plaintext);
return join(multiply(keyMatrix, plaintextMatrix)); return join(multiply(keyMatrix, plaintextMatrix));
} }
@ -219,10 +219,10 @@ export function decode(ciphertext, key) {
N = Math.ceil(Math.sqrt(key.length)); N = Math.ceil(Math.sqrt(key.length));
// Generate matrix representation of the key. // Generate matrix representation of the key.
const keyMatrix = inverse(genMatix(key, true)); const keyMatrix = inverse(genMatrix(key, true));
// Generate matrix representation of the plaintext. // Generate matrix representation of the plaintext.
const ciphertextMatrix = genMatix(ciphertext); const ciphertextMatrix = genMatrix(ciphertext);
return join(multiply(keyMatrix, ciphertextMatrix)); return join(multiply(keyMatrix, ciphertextMatrix));