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feat(kgm): kgm v5 (aka. kgg) support

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鲁树人
2025-02-25 07:05:31 +09:00
parent acb7a634b1
commit c71078f5da
24 changed files with 553 additions and 39 deletions
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9
src/decrypt-worker/decipher/KugouMusic.ts
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@@ -1,16 +1,18 @@
import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
import { KuGou } from '@unlock-music/crypto';
import { KuGou, KuGouHeader } from '@unlock-music/crypto';
import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
export class KugouMusicDecipher implements DecipherInstance {
cipherName = 'Kugou';
async decrypt(buffer: Uint8Array, _options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
async decrypt(buffer: Uint8Array, options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
let kgm: KuGou | undefined;
let kgmHdr: KuGouHeader | undefined;
try {
kgm = KuGou.from_header(buffer.subarray(0, 0x400));
kgmHdr = new KuGouHeader(buffer.subarray(0, 0x400));
kgm = KuGou.fromHeaderV5(kgmHdr, options.kugouKey);
const audioBuffer = new Uint8Array(buffer.subarray(0x400));
for (const [block, offset] of chunkBuffer(audioBuffer)) {
@@ -23,6 +25,7 @@ export class KugouMusicDecipher implements DecipherInstance {
data: audioBuffer,
};
} finally {
kgmHdr?.free();
kgm?.free();
}
}