-O okey=val: offset into key (useful for block device keys, such as USB sticks).

[tfcrypt.git] / tfc_error.c

diff --git a/tfc_error.c b/tfc_error.c
index e33131504fa1051b22b1f419202fd137b0d23a97..e1793fe0b5ed6e540886334bcb3a3e3272a10ff2 100644 (file)
--- a/tfc_error.c
+++ b/tfc_error.c
@@ -252,6 +252,7 @@ void usage(void)
        tfc_say("    oseek=val: seek destination file/device by these val bytes.");
        tfc_say("    count=val: process only these val bytes, both input and output.");
        tfc_say("    xkey=val: take only val bytes from user keyfile.");
+       tfc_say("    okey=val: seek the key before reading it (usually a device).");
        tfc_say("    xctr=val: specify size in bytes of initial counter prepended or read.");
        tfc_say("  -P: plain IO mode: disable encryption/decryption code at all.");
        tfc_say("\n");