之前用Shadowrocket的HTTPS解密需要导入证书功能，但是换iPhone X的时候，恢复备份之后发现证书所依赖的描述文件没有被恢复过来，但是信任证书居然还残留在里面删不掉，虽说忽略掉不打开信任开关也没问题，但是比较还是会逼死强迫症的。翻查网络和询问作者都一直误解，终于今天在Telegram上面Shadowrocket的作者推送了这个链接，问题终于得到了解决！
With iOS, certificates are installed as part of profiles. Deleting a certificate means removing the profile.
When an iPhone with profiles is backed up, and then the backup is restored to a new device, the profiles are no longer visible under Settings > General > Profiles. So, they can’t be deleted via the usual way.
The certificates however get restored to the device. One can see them e.g. under Settings > General > About > Certificate Trust Settings.
Hence my question: How can these certificates be deleted from the device?
I found a certificate in my iOS device’s Certificate Trust Settings. And it was not be found in Profiles. Finally I remove it by add the cert file again, and then I can found and remove it in Profiles.
At first, I can’t found the cert file, because this CA was installed years ago. So I did these things:
Backup iPhone to Mac, View backup file by some software (I used iMazing)
Find TrustStore.sqlite3 in Backup/KeychainDomain/ and export it to HOME DIR.
Use this project https://github.com/ADVTOOLS/ADVTrustStore to export certfile./iosCertTrustManager.py -t ~/TrustStore.sqlite3 -e ~/foo.crt
Airdrop or Email this crt file to iOS device, and install it.
Find it in Settings > General > Profiles and Remove it.
It disappear in “Certificate Trust Settings”
Done.
GitHub上面的这个ADVTrustStore工程居然还有在更新，有鉴于此，我把我到2021年7月1日还能用（实测可以解开iOS 14.6备份的TrustStore.sqlite3文件）的旧版本打包在这里吧。
