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authordanim72017-03-25 18:22:08 +0100
committerrfjakob2017-03-25 18:22:08 +0100
commit40f0a8ee72dd3091480d73f8e76979545a3668ea (patch)
tree0e7bc33672216479f2aa760d7a3c981a2b5f7d35
parent1ff4ae56c1280576ff38296cf7d506651eda6592 (diff)
Further explain the use of 'scryptn' parameter (#94)
* Further explain the use of 'scryptn' parameter * Further explain the use of 'scryptn' parameter in MANPAGE * Use 28 as reasonable upper limit
-rw-r--r--Documentation/MANPAGE.md6
-rw-r--r--cli_args.go4
2 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/MANPAGE.md b/Documentation/MANPAGE.md
index 7387424..fe2d73f 100644
--- a/Documentation/MANPAGE.md
+++ b/Documentation/MANPAGE.md
@@ -200,9 +200,9 @@ Options:
For more details visit https://github.com/rfjakob/gocryptfs/issues/92 .
**-scryptn int**
-: scrypt cost parameter logN. Setting this to a lower value speeds up
- mounting but makes the password susceptible to brute-force attacks
- (default 16)
+: scrypt cost parameter logN. Possible values: 10-28. Setting this to a lower
+ value speeds up mounting and reduces its memory needs, but makes
+ the password susceptible to brute-force attacks (default 16).
**-speed**
: Run crypto speed test. Benchmark Go's built-in GCM against OpenSSL
diff --git a/cli_args.go b/cli_args.go
index 04009dc..9414e67 100644
--- a/cli_args.go
+++ b/cli_args.go
@@ -124,8 +124,8 @@ func parseCliOpts() (args argContainer) {
flagSet.StringVar(&args.fsname, "fsname", "", "Override the filesystem name")
flagSet.IntVar(&args.notifypid, "notifypid", 0, "Send USR1 to the specified process after "+
"successful mount - used internally for daemonization")
- flagSet.IntVar(&args.scryptn, "scryptn", configfile.ScryptDefaultLogN, "scrypt cost parameter logN. "+
- "A lower value speeds up mounting but makes the password susceptible to brute-force attacks")
+ flagSet.IntVar(&args.scryptn, "scryptn", configfile.ScryptDefaultLogN, "scrypt cost parameter logN. Possible values: 10-28. "+
+ "A lower value speeds up mounting and reduces its memory needs, but makes the password susceptible to brute-force attacks")
// Ignored otions
var dummyBool bool
ignoreText := "(ignored for compatibility)"