-c zero: assume zero counter value.

[tfcrypt.git] / tfc_error.c

diff --git a/tfc_error.c b/tfc_error.c
index e1793fe0b5ed6e540886334bcb3a3e3272a10ff2..b90b1087f659d4d656490c639b71586b713319ad 100644 (file)
--- a/tfc_error.c
+++ b/tfc_error.c
@@ -151,6 +151,8 @@ void usage(void)
        tfc_say("convert encrypted data into ASCII format to ease transmission.");
        tfc_say("\n");
        tfc_say("  -e, -d: encrypt, decrypt (it maybe required).");
+       tfc_say("  -L <file>: load tfcrypt defaults from file.");
+       tfc_say("    defaults is text file which defines salt, nr_turns and default mode.");
        tfc_say("  -s <file>: load tfcrypt salt from file.");
        tfc_say("  -s disable: disable key salting at all.");
        tfc_say("  -p: instead of using key, ask for password.");
@@ -169,6 +171,7 @@ void usage(void)
        tfc_say("    show: do default action, then dump CTR value to stderr,");
        tfc_say("    head: when decrypting, read CTR from beginning of stream,");
        tfc_say("    rand: generate random CTR and write it to beginning of stream,");
+       tfc_say("    zero: assume zero CTR is used, do not read from and write it to stream,");
        tfc_say("    <file>: read CTR from given file (both when encrypting/decrypting).");
        tfc_say("      default is to derive CTR from user provided password or keyfile with");
        tfc_say("      a single Skein function turn over derived, %u byte raw key", TFC_U(TF_KEY_SIZE));
@@ -221,7 +224,8 @@ void usage(void)
        tfc_say("      Note that both sync and lsync work only with read errors!");
        tfc_say("  default error action is exit with printing status if not quiet.");
        tfc_say("  -E xall: turn on error actions above for all errors, not just EIO errors.");
-       tfc_say("    This must be a separate option given before usual -E how option.");
+       tfc_say("  -E xseek: ignore positioning and other seek related errors.");
+       tfc_say("    Multiple -E specifiers may be given in separate options.");
        tfc_say("  -O opts: set options (comma separated list):");
        tfc_say("    sync: request a synchronous I/O for a output,");
        tfc_say("    fsync: on each write() call a corresponding fsync(fd),");