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51 lines
1.3 KiB
51 lines
1.3 KiB
2 years ago
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import CipherBase from "../cipher-base";
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import * as des from "../des/index.js";
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import { inherits as inherits$0 } from "util";
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var inherits = { inherits: inherits$0 }.inherits;
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var modes = {
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'des-ede3-cbc': des.CBC.instantiate(des.EDE),
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'des-ede3': des.EDE,
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'des-ede-cbc': des.CBC.instantiate(des.EDE),
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'des-ede': des.EDE,
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'des-cbc': des.CBC.instantiate(des.DES),
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'des-ecb': des.DES
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};
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modes.des = modes['des-cbc'];
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modes.des3 = modes['des-ede3-cbc'];
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inherits(DES, CipherBase);
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function DES(opts) {
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CipherBase.call(this);
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var modeName = opts.mode.toLowerCase();
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var mode = modes[modeName];
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var type;
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if (opts.decrypt) {
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type = 'decrypt';
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}
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else {
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type = 'encrypt';
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}
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var key = opts.key;
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if (!Buffer.isBuffer(key)) {
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key = Buffer.from(key);
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}
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if (modeName === 'des-ede' || modeName === 'des-ede-cbc') {
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key = Buffer.concat([key, key.slice(0, 8)]);
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}
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var iv = opts.iv;
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if (!Buffer.isBuffer(iv)) {
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iv = Buffer.from(iv);
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}
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this._des = mode.create({
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key: key,
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iv: iv,
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type: type
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});
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}
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DES.prototype._update = function (data) {
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return Buffer.from(this._des.update(data));
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};
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DES.prototype._final = function () {
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return Buffer.from(this._des.final());
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};
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export default DES;
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