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Automatically fall back to hiding files if not authorized to permanently
delete files. This allows using restic with an append-only application
key with B2. Thus, an attacker cannot directly delete backups with the
API key used by restic.
To use this feature create an application key without the deleteFiles
capability. It is recommended to restrict the key to just one bucket.
For example using the b2 command line tool:
b2 create-key --bucket <bucketName> <keyName> listBuckets,readFiles,writeFiles,listFiles
Suggested-by: Daniel Gröber <dxld@darkboxed.org>
20 lines
916 B
Plaintext
20 lines
916 B
Plaintext
Enhancement: Support B2 API keys restricted to hiding but not deleting files
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When the B2 backend does not have the necessary permissions to permanently
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delete files, it now automatically falls back to hiding files. This allows
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using restic with an application key which is not allowed to delete files.
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This prevents an attacker to delete backups with the API key used by restic.
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To use this feature create an application key without the deleteFiles
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capability. It is recommended to restrict the key to just one bucket.
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For example using the b2 command line tool:
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b2 create-key --bucket <bucketName> <keyName> listBuckets,readFiles,writeFiles,listFiles
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Alternatively, you can use the S3 backend to access B2, as described
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in the documentation. In this mode, files are also only hidden instead
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of being deleted permanently.
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https://github.com/restic/restic/issues/2134
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https://github.com/restic/restic/pull/2398
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