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Explain how to decrypt qubes.xml.000.enc

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Closes QubesOS/qubes-issues#4728
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Andrew David Wong 2019-03-02 01:37:08 -06:00
parent 558f949771
commit 78b185edc5
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1 changed files with 23 additions and 11 deletions
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34
common-tasks/backup-emergency-restore-v4.md
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@ -39,11 +39,11 @@ uses an RPM-based system (Fedora), but the same general procedure should work on
any GNU/Linux system.
1. If you're not on Qubes 4.X, [get and verify the Release 4 Signing Key].
2. If you're not on Qubes 4.X, import the Release 4 Signing Key:
2. If you're not on Qubes 4.X, import the Release 4 Signing Key.
[user@restore ~]$ sudo rpm --import qubes-release-4-signing-key.asc
3. Download the `scrypt` RPM:
3. Download the `scrypt` RPM.
[user@restore ~]$ dnf download scrypt
@ -51,7 +51,7 @@ any GNU/Linux system.
[user@restore ~]$ curl -O https://yum.qubes-os.org/r4.0/current/vm/fc28/rpm/scrypt-1.2.1-1.fc28.x86_64.rpm
4. Verify the signature on the `scrypt` RPM:
4. Verify the signature on the `scrypt` RPM.
[user@restore ~]$ rpm -K scrypt-*.rpm
scrypt-*.rpm: digests signatures OK
@ -59,15 +59,15 @@ any GNU/Linux system.
The message `digests signatures OK` means that both the digest (i.e., the
output of a hash function) and PGP signature verification were successful.
5. Install `rpmdevtools`:
5. Install `rpmdevtools`.
[user@restore ~]$ sudo dnf install rpmdevtools
6. Extract the `scrypt` binary from the RPM:
6. Extract the `scrypt` binary from the RPM.
[user@restore ~]$ rpmdev-extract scrypt-*.rpm
7. (Optional) Create an alias for the new binary:
7. (Optional) Create an alias for the new binary.
[user@restore ~]$ alias scrypt="scrypt-*/usr/bin/scrypt"
@ -92,12 +92,24 @@ Emergency Recovery Instructions
vm1/whitelisted-appmenus.list.000.enc
dom0-home/dom0user.000.enc
**Note:** Each VM in the backup file has its path listed in
`qubes.xml.000.enc` (search for the `backup-path` property). You can
extract only the files necessary for your VM (`vmX`) with `tar -i -xvf
qubes-backup-2015-06-05T123456 backup-header backup-header.hmac vmX/`.
**To extract only specific VMs:** Each VM in the backup file has its path
listed in `qubes.xml.000.enc`. Decrypt it. (In this example, the password is
`password`.)
2. Set the backup passhprase environment variable. While this isn't strictly
[user@restore ~]$ cat backup-header | grep backup-id
backup-id=20190128T123456-1234
[user@restore ~]$ scrypt dec -P qubes.xml.000.enc qubes.xml.000
Please enter passphrase: 20190128T123456-1234!qubes.xml.000!password
[user@restore ~]$ tar -i -xvf qubes.xml.000
Now that you have the decrypted `qubes.xml.000` file, search for the
`backup-path` property inside of it. With the `backup-path`, extract only
the files necessary for your VM (`vmX`).
[user@restore ~]$ tar -i -xvf qubes-backup-2015-06-05T123456 \
backup-header backup-header.hmac vmX/
2. Set the backup passphrase environment variable. While this isn't strictly
required, it will be handy later and will avoid saving the passphrase in
the shell's history.