解密 HarmonyOS 鸿蒙Next

解密 HarmonyOS 鸿蒙Next

上面是base64数据

i23XYz0V3ymAejpB54lJ6rZp
这是key

let stop: string = "i23XYz0V3ymAejpB54lJ6rZp"
const stopByte = buffer.alloc(24)
stopByte.fill(stop, 0, null, "utf-8")
let arr: number[] = []
for (let i = 0; i < stopByte.length; i++) {
 arr.push(stopByte[i])
}
let keyMaterial = new Uint8Array(arr);

let that = new util.Base64Helper();
let result = that.decodeSync(this.data, util.Type.MIME); //base64转的Uint8Array

let cihper = cryptoFramework.createCipher('3DES192|ECB|PKCS7');
let Generator = cryptoFramework.createSymKeyGenerator('3DES192');
Generator.convertKey({ data: keyMaterial }, (err, symKey) => {

cihper.init(crypto.CryptoMode.DECRYPT_MODE, symKey, null)
cihper.doFinal({ data: result }).then((result: crypto.DataBlob) => {
 let textDecode = util.TextDecoder.create('utf-8')
 let str = textDecode.decodeWithStream(result.data)
 hilog.error(0, 'GainQrcode123', 'message====' + str)
}).catch((err: BusinessError) => {
 hilog.error(0, 'GainQrcode123', 'message====' + `failed with err: ${err.code}, ${err.message}`)
});
})