-g, -j: shortcuts for stream ciphers with random counter

[tfcrypt.git] / tfc_error.c

diff --git a/tfc_error.c b/tfc_error.c
index 953ba0725a648f1079be4d5cd0ac2ec76f63a5c6..8e4148251f0a4e15d3f95df252fd8b72b81230b5 100644 (file)
--- a/tfc_error.c
+++ b/tfc_error.c
@@ -281,6 +281,8 @@ void usage(void)
        tfc_say("  -v: print number of read and written encrypted bytes, and explain stages.");
        tfc_say("  -V seconds: activate timer that will repeatedly print statistics to stderr.");
        tfc_say("  -a: shortcut of -O xtime.");
+       tfc_say("  -g: same as '-e -C stream -c rand' or '-d -C stream -c head', depending on mode.");
+       tfc_say("  -j: same as '-e -C ctr -c rand' or '-d -C ctr -c head', depending on mode.");
        tfc_say("  -l length: read only these first bytes of source.");
        tfc_say("  -r <file>: specify random source instead of /dev/urandom.");
        tfc_say("  -R nr_bytes: generate nr_bytes of random bytes suitable for use as key data.");