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| author | Jakob Unterwurzacher | 2021-11-01 14:44:32 +0100 |
|---|---|---|
| committer | Jakob Unterwurzacher | 2021-11-01 14:44:32 +0100 |
| commit | d530fbd400c88fa54c856d958963d77669ac9cf2 (patch) | |
| tree | d43ee0ed0ab4738e4fe5a77ceed3222740f3842c /internal/configfile/feature_flags.go | |
| parent | 87a6bb370acc3690e89a8b0d5109fcb0dab0a374 (diff) | |
docs: names longer than 175 bytes (not 176) are stored in longnames
Quoting fusefrontend_reverse/node_helpers.go :
// File names are padded to 16-byte multiples, encrypted and
// base64-encoded. We can encode at most 176 bytes to stay below the 255
// bytes limit:
// * base64(176 bytes) = 235 bytes
// * base64(192 bytes) = 256 bytes (over 255!)
// But the PKCS#7 padding is at least one byte. This means we can only use
// 175 bytes for the file name.
Noticed by @bailey27 at https://github.com/rfjakob/gocryptfs/issues/499#issuecomment-955790427
Diffstat (limited to 'internal/configfile/feature_flags.go')
| -rw-r--r-- | internal/configfile/feature_flags.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/internal/configfile/feature_flags.go b/internal/configfile/feature_flags.go index e45b20c..d6627a5 100644 --- a/internal/configfile/feature_flags.go +++ b/internal/configfile/feature_flags.go @@ -14,7 +14,7 @@ const ( // This flag is mandatory since gocryptfs v1.0, // except when XChaCha20Poly1305 is used. FlagGCMIV128 - // FlagLongNames allows file names longer than 176 bytes. + // FlagLongNames allows file names longer than 175 bytes. FlagLongNames // FlagLongNameMax sets a custom name length limit, names longer than that // will be hashed. |