28 lines
1012 B
JavaScript
28 lines
1012 B
JavaScript
// Electronic Code Book
|
|
import { ModeOfOperation } from "./mode.js";
|
|
export class ECB extends ModeOfOperation {
|
|
constructor(key) {
|
|
super("ECB", key, ECB);
|
|
}
|
|
encrypt(plaintext) {
|
|
if (plaintext.length % 16) {
|
|
throw new TypeError("invalid plaintext size (must be multiple of 16 bytes)");
|
|
}
|
|
const crypttext = new Uint8Array(plaintext.length);
|
|
for (let i = 0; i < plaintext.length; i += 16) {
|
|
crypttext.set(this.aes.encrypt(plaintext.subarray(i, i + 16)), i);
|
|
}
|
|
return crypttext;
|
|
}
|
|
decrypt(crypttext) {
|
|
if (crypttext.length % 16) {
|
|
throw new TypeError("invalid ciphertext size (must be multiple of 16 bytes)");
|
|
}
|
|
const plaintext = new Uint8Array(crypttext.length);
|
|
for (let i = 0; i < crypttext.length; i += 16) {
|
|
plaintext.set(this.aes.decrypt(crypttext.subarray(i, i + 16)), i);
|
|
}
|
|
return plaintext;
|
|
}
|
|
}
|
|
//# sourceMappingURL=mode-ecb.js.map
|