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1 files changed, 15 insertions, 3 deletions
diff --git a/Readme.textile b/Readme.textile
index 3051c29..8997f39 100644
--- a/Readme.textile
+++ b/Readme.textile
@@ -13,7 +13,7 @@ p. For clipboard tasks, twofa requires the _clipboard_ gem, and either the _xcli
h2. Usage
bc.. $ twofa -h
-twofa is a command line TOTP code generator.
+twofa is a command line OTP code generator.
Usage:
twofa [opts] ISSUER
@@ -26,6 +26,18 @@ where [opts] are:
h3. twofa secrets file
-p. The twofa secrets file is normally found at @~./twofa@, and has the format:
+p. The twofa secrets file is normally found at @~./twofa@, and each record has the following fields. If any of the optional fields are given, all preceeding optional fields must also be given.
-bc. ISSUER SECRET [interval | default(30)] [length | default(6)] [hashing algorithm | default(sha1)]
+p. If a HOTP code is requested, the file will be canoncalised.
+
+h4. Required fields
+
+- Method := The OTP type, currently @totp@ or @hotp@
+- Issuer := Human name for this issuer
+- Secret := The BASE32 shared secret
+
+h4. Optional fields
+
+- Time interval or Counter := Either the time interval (for TOTP) or counter (for HOTP). The former defaults to 30 if not given, the latter to 0.
+- Length := The output code length. Defaults to 6 digits.
+- Hashing algorithm := The algorithm used to generate the HMAS hash. Defaults to @sha1@.