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feat: added support for ncm (#15)

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鲁树人 2023-05-22 23:07:58 +01:00
parent b0fc56519e
commit 117351a6e5
5 changed files with 32 additions and 5 deletions
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2
package.json
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@ -20,7 +20,7 @@
"@chakra-ui/react": "^2.6.1",
"@emotion/react": "^11.11.0",
"@emotion/styled": "^11.11.0",
"@jixun/libparakeet": "0.0.0-exp.18",
"@jixun/libparakeet": "0.0.0-exp.19",
"@reduxjs/toolkit": "^1.9.5",
"framer-motion": "^10.12.12",
"nanoid": "^4.0.2",

8
pnpm-lock.yaml
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@ -14,8 +14,8 @@ dependencies:
specifier: ^11.11.0
version: 11.11.0(@emotion/react@11.11.0)(@types/react@18.2.6)(react@18.2.0)
'@jixun/libparakeet':
specifier: 0.0.0-exp.18
version: 0.0.0-exp.18
specifier: 0.0.0-exp.19
version: 0.0.0-exp.19
'@reduxjs/toolkit':
specifier: ^1.9.5
version: 1.9.5(react-redux@8.0.5)(react@18.2.0)
@ -3060,9 +3060,9 @@ packages:
chalk: 4.1.2
dev: true
/@jixun/libparakeet@0.0.0-exp.18:
/@jixun/libparakeet@0.0.0-exp.19:
resolution:
{ integrity: sha512-KLUCxr6x47hDs1tszY8uyR8fgiB+b2UIFSgCg9GEs+AiB+oFTyQlhZXbKmyfDOuWSDiBcdKJvmXq29x3zPDNEQ== }
{ integrity: sha512-FePuE49fCIRppzTJzaeISJhtvf1mFyU4MpVlQigmlR2CLAXtEkJz0HhsoumJwzcWv6UQJMUSagtXoTa8pxZ4ww== }
dev: false
/@jridgewell/gen-mapping@0.3.3:

4
src/decrypt-worker/crypto/CryptoFactory.ts
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@ -1,4 +1,5 @@
import { CryptoFactory } from './CryptoBase';
import { NCMCrypto } from './ncm/ncm_pc';
import { QMC1Crypto } from './qmc/qmc_v1';
import { QMC2Crypto } from './qmc/qmc_v2';
@ -12,6 +13,9 @@ export const allCryptoFactories: CryptoFactory[] = [
// QMCv2 (*.mflac)
QMC2Crypto.make,
// NCM (*.ncm)
NCMCrypto.make,
// Crypto that does not implement "checkBySignature" or need to decrypt the entire file and then check audio type,
// should be moved to the bottom of the list for performance reasons.

2
src/decrypt-worker/crypto/ncm/ncm_pc.key.ts Normal file
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@ -0,0 +1,2 @@
export const NCM_KEY = 'hzHRAmso5kInbaxW';
export const NCM_MAGIC_HEADER = new Uint8Array([0x43, 0x54, 0x45, 0x4e, 0x46, 0x44, 0x41, 0x4d]);

21
src/decrypt-worker/crypto/ncm/ncm_pc.ts Normal file
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@ -0,0 +1,21 @@
import { transformBlob } from '~/decrypt-worker/util/transformBlob';
import type { CryptoBase } from '../CryptoBase';
import { NCM_KEY, NCM_MAGIC_HEADER } from './ncm_pc.key';
export class NCMCrypto implements CryptoBase {
cryptoName = 'NCM/PC';
checkByDecryptHeader = false;
async checkBySignature(buffer: ArrayBuffer) {
const view = new DataView(buffer, 0, NCM_MAGIC_HEADER.byteLength);
return NCM_MAGIC_HEADER.every((value, i) => value === view.getUint8(i));
}
async decrypt(buffer: ArrayBuffer): Promise<Blob> {
return transformBlob(buffer, (p) => p.make.NeteaseNCM(NCM_KEY));
}
public static make() {
return new NCMCrypto();
}
}