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optimize: imports

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MengYX 2021-08-03 03:10:49 +08:00
parent 6737e8c11b
commit 652bb1fc32
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GPG Key ID: E63F9C7303E8F604
1 changed files with 21 additions and 13 deletions
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30
src/decrypt/ncm.ts
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@ -11,11 +11,18 @@ import {
import {parseBlob as metaParseBlob} from "music-metadata-browser"; import {parseBlob as metaParseBlob} from "music-metadata-browser";
import jimp from 'jimp'; import jimp from 'jimp';
import CryptoJS from "crypto-js"; import AES from "crypto-js/aes";
import PKCS7 from "crypto-js/pad-pkcs7";
import ModeECB from "crypto-js/mode-ecb";
import WordArray from "crypto-js/lib-typedarrays";
import Base64 from "crypto-js/enc-base64";
import EncUTF8 from "crypto-js/enc-utf8";
import EncHex from "crypto-js/enc-hex";
import {DecryptResult} from "@/decrypt/entity"; import {DecryptResult} from "@/decrypt/entity";
const CORE_KEY = CryptoJS.enc.Hex.parse("687a4852416d736f356b496e62617857"); const CORE_KEY = EncHex.parse("687a4852416d736f356b496e62617857");
const META_KEY = CryptoJS.enc.Hex.parse("2331346C6A6B5F215C5D2630553C2728"); const META_KEY = EncHex.parse("2331346C6A6B5F215C5D2630553C2728");
const MagicHeader = [0x43, 0x54, 0x45, 0x4E, 0x46, 0x44, 0x41, 0x4D]; const MagicHeader = [0x43, 0x54, 0x45, 0x4E, 0x46, 0x44, 0x41, 0x4D];
@ -67,11 +74,11 @@ class NcmDecrypt {
.map(uint8 => uint8 ^ 0x64); .map(uint8 => uint8 ^ 0x64);
this.offset += keyLen; this.offset += keyLen;
const plainText = CryptoJS.AES.decrypt( const plainText = AES.decrypt(
// @ts-ignore // @ts-ignore
{ciphertext: CryptoJS.lib.WordArray.create(cipherText)}, {ciphertext: WordArray.create(cipherText)},
CORE_KEY, CORE_KEY,
{mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7} {mode: ModeECB, padding: PKCS7}
); );
const result = new Uint8Array(plainText.sigBytes); const result = new Uint8Array(plainText.sigBytes);
@ -115,17 +122,18 @@ class NcmDecrypt {
.map(data => data ^ 0x63); .map(data => data ^ 0x63);
this.offset += metaDataLen; this.offset += metaDataLen;
const plainText = CryptoJS.AES.decrypt( WordArray.create()
const plainText = AES.decrypt(
// @ts-ignore // @ts-ignore
{ {
ciphertext: CryptoJS.enc.Base64.parse( ciphertext: Base64.parse(
// @ts-ignore // @ts-ignore
CryptoJS.lib.WordArray.create(cipherText.slice(22)).toString(CryptoJS.enc.Utf8) WordArray.create(cipherText.slice(22)).toString(EncUTF8)
) )
}, },
META_KEY, META_KEY,
{mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7} {mode: ModeECB, padding: PKCS7}
).toString(CryptoJS.enc.Utf8); ).toString(EncUTF8);
const labelIndex = plainText.indexOf(":"); const labelIndex = plainText.indexOf(":");
let result: NcmMusicMeta; let result: NcmMusicMeta;