[操作疑難] 三叔機維修完後解密唔到SD卡

急問，我部三叔機，維修完返黎話換左底板，但可惜而家我之前張SD卡加密左，我而開唔返D FILE,
我問過三叔HOTLINE, 佢教我試下將FILE抄入電腦，再FORMAT過張卡後，從新抄入SD卡到，等部電話解密，當然結果係唔WORK啦

PS. 我插之前張加密左既SD卡入電話到，佢顯示根本係問我要唔要加密，並唔係解密
同樣，我用另一張卡(未加密)，佢會問我是否要加密，當加密完成後，電話會問我是否要解密

各C.HING有冇辦法解到呢?

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chromechan

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發表於 2017-8-10 22:04 | 只看該作者

回覆 1# chichung1107

無架喇，放棄啲資料啦
https://www.piriform.com/recuva
可以輕輕試吓攞唔攞到零碎嘅數據啦

p.s.每Format一次，資料回復率越低，三叔hotline叫你format卡擺明係唔明你嘅問題／玩你（前者居多）

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chichung1107

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發表於 2017-8-10 22:21 | 只看該作者

真係冇辦法?

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bizwalker

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發表於 2017-8-10 22:40 | 只看該作者

Google 咗以下 keywords「samsung galaxy encrypt sd repair motherboard」，搵到兩條外國著名技術 forum 嘅 posts：

How to decrypt a microSD card after a factory reset of the device used to encrypt it?
https://security.stackexchange.com/questions/116750/how-to-decrypt-a-microsd-card-after-a-factory-reset-of-the-device-used-to-encryp
- 佢成功係因為佢個 case 係同一部電話，而樓主你係換咗底板，理論上都已經係兩部唔同手機。我諗 encryption 個 key 係跟 motherboard 底板的，所以似乎樓主你真係可以放棄，anyway 再睇多個 post：

Is it possible to mount on a PC an SD card that has been encrypted by an Android Marshmallow device?
https://android.stackexchange.com/questions/155138/is-it-possible-to-mount-on-a-pc-an-sd-card-that-has-been-encrypted-by-an-android
- 呢度就好明確講話經某一 Android phone encrypt 咗嘅 SD card 係不能夠在其他裝置 mount

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Why you might want to encrypt the SD card on your Galaxy S7
https://www.androidcentral.com/why-you-might-want-encrypt-sd-card-your-galaxy-s7

「But encrypting an SD card also has a drawback — you can't ever read the contents in another device. That means if you break your phone while the SD card was encrypted, everything on it is gone. Because of the way encryption works, even using the same password on a different phone of the same model doesn't give you access — the actual key is that random number stored in the TEE (Trusted Execution Environment) in the phone.

Outside of the phone you originally used to encrypt your card, your only option to ever use the card again is to erase it and start fresh.」

就咁睇以上嘅嘢，我估可能真係救唔返，因為 encryption 加密最主要都係講條 key，而條 key generate 出嚟係 based on 你部手機個底板，但可惜已經換咗

你成數最高嘅解決方法，就係唔好再搞張卡，用上面版主提議，或者其他 data recovery 軟件嚟 restore as much data as you possibly can out of that microSD card

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chichung1107