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use wasm in npm packages

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xhacker-zzz
2023-01-20 20:27:36 +08:00
parent 8475a5bc65
commit 44418486f6
22 changed files with 53 additions and 1771 deletions
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23
src/decrypt/kgm_wasm.ts
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@@ -1,4 +1,5 @@
import KgmCryptoModule from '@/KgmWasm/KgmWasmBundle';
import { KgmCrypto } from '@xhacker/kgmwasm/KgmWasmBundle';
import KgmCryptoModule from '@xhacker/kgmwasm/KgmWasmBundle';
import { MergeUint8Array } from '@/utils/MergeUint8Array';
// 每次处理 2M 的数据
@@ -20,26 +21,26 @@ export async function DecryptKgmWasm(kgmBlob: ArrayBuffer, ext: string): Promise
const result: KGMDecryptionResult = { success: false, data: new Uint8Array(), error: '' };
// 初始化模组
let KgmCrypto: any;
let KgmCryptoObj: KgmCrypto;
try {
KgmCrypto = await KgmCryptoModule();
KgmCryptoObj = await KgmCryptoModule();
} catch (err: any) {
result.error = err?.message || 'wasm 加载失败';
return result;
}
if (!KgmCrypto) {
if (!KgmCryptoObj) {
result.error = 'wasm 加载失败';
return result;
}
// 申请内存块，并文件末端数据到 WASM 的内存堆
let kgmBuf = new Uint8Array(kgmBlob);
const pQmcBuf = KgmCrypto._malloc(DECRYPTION_BUF_SIZE);
KgmCrypto.writeArrayToMemory(kgmBuf.slice(0, DECRYPTION_BUF_SIZE), pQmcBuf);
const pQmcBuf = KgmCryptoObj._malloc(DECRYPTION_BUF_SIZE);
KgmCryptoObj.writeArrayToMemory(kgmBuf.slice(0, DECRYPTION_BUF_SIZE), pQmcBuf);
// 进行解密初始化
const headerSize = KgmCrypto.preDec(pQmcBuf, DECRYPTION_BUF_SIZE, ext);
const headerSize = KgmCryptoObj.preDec(pQmcBuf, DECRYPTION_BUF_SIZE, ext);
console.log(headerSize);
kgmBuf = kgmBuf.slice(headerSize);
@@ -51,14 +52,14 @@ export async function DecryptKgmWasm(kgmBlob: ArrayBuffer, ext: string): Promise
// 解密一些片段
const blockData = new Uint8Array(kgmBuf.slice(offset, offset + blockSize));
KgmCrypto.writeArrayToMemory(blockData, pQmcBuf);
KgmCrypto.decBlob(pQmcBuf, blockSize, offset);
decryptedParts.push(KgmCrypto.HEAPU8.slice(pQmcBuf, pQmcBuf + blockSize));
KgmCryptoObj.writeArrayToMemory(blockData, pQmcBuf);
KgmCryptoObj.decBlob(pQmcBuf, blockSize, offset);
decryptedParts.push(KgmCryptoObj.HEAPU8.slice(pQmcBuf, pQmcBuf + blockSize));
offset += blockSize;
bytesToDecrypt -= blockSize;
}
KgmCrypto._free(pQmcBuf);
KgmCryptoObj._free(pQmcBuf);
result.data = MergeUint8Array(decryptedParts);
result.success = true;