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Diffstat (limited to 'SECURITY.md')
| -rw-r--r-- | SECURITY.md | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/SECURITY.md b/SECURITY.md index 2e6f3f4..4db4c24 100644 --- a/SECURITY.md +++ b/SECURITY.md @@ -22,21 +22,20 @@ encrypted data unless you know the key. ### File Names -* File names are encrypted using AES-256-CBC because it is robust even - without using an IV -* The file names are padded to multiples of 16 bytes +* File names are encrypted using AES-256-CBC with a per-directory IV +* Each directory get a random 128 bit IV on creation + * Files with the same name in different directories are encrypted to + different filenames and can not be identified +* File names are padded to multiples of 16 bytes * This means that the exact length of the name is hidden, only length ranges (1-16 bytes, 17-32 bytes etc.) can be determined from the encrypted files -* For technical reasons, no IV is used - * This means that files with the same name within one gocryptfs filesystem - always get the same encrypted name ### Metadata * The size of the file is not hidden. The exact file size can be calculated from the size of the encrypted file. -* File owner, file permissions and timestamps are not hidden either +* File owner, file permissions and timestamps are not hidden. Integrity --------- |