From: Daira Hopwood <daira@jacaranda.org>
Date: Tue, 25 Feb 2014 16:57:57 +0000 (+0000)
Subject: misc/simulators/hashbasedsig.py: revert last patch; the original code was correct.
X-Git-Tag: allmydata-tahoe-1.10.1a1~196
X-Git-Url: https://git.rkrishnan.org/COPYING.TGPPL.html?a=commitdiff_plain;h=37199782153f8ff0f74d86c35d18cfd59d2a6dfa;p=tahoe-lafs%2Ftahoe-lafs.git

misc/simulators/hashbasedsig.py: revert last patch; the original code was correct.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
---

diff --git a/misc/simulators/hashbasedsig.py b/misc/simulators/hashbasedsig.py
index db0a09d2..ea220ddf 100644
--- a/misc/simulators/hashbasedsig.py
+++ b/misc/simulators/hashbasedsig.py
@@ -164,7 +164,7 @@ def calculate(K, K1, K2, q_max, L_hash, trees):
             # n is the number of digits needed to sign the message representative and checksum.
             # The representation is base-B, except that we allow the most significant digit
             # to be up to 2B-1.
-            n_L = ceil_div(L_hash, lg(B))
+            n_L = ceil_div(L_hash-1, lg(B))
             firstL_max = floor_div(pow(2, L_hash)-1, pow(B, n_L-1))
             C_max = firstL_max + (n_L-1)*(B-1)
             n_C = ceil_log(ceil_div(C_max, 2), B)