From 5bbf1a4daf25c6fa068cb80c74949322d6fa581f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Tue, 8 Jun 2004 17:26:15 +0200
Subject: [PATCH] Renamed log and ilog to gf2_log and gf2_exp.
Rev: src/nettle/aesdata.c:1.4
---
aesdata.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/aesdata.c b/aesdata.c
index 0fc1b310..9077c549 100644
--- a/aesdata.c
+++ b/aesdata.c
@@ -23,8 +23,8 @@
uint8_t sbox[0x100];
uint8_t isbox[0x100];
-uint8_t log[0x100];
-uint8_t ilog[0x100];
+uint8_t gf2_log[0x100];
+uint8_t gf2_exp[0x100];
uint32_t dtable[4][0x100];
uint32_t itable[4][0x100];
@@ -51,30 +51,30 @@ compute_log(void)
unsigned i = 0;
unsigned x = 1;
- memset(log, 0, 0x100);
+ memset(gf2_log, 0, 0x100);
for (i = 0; i < 0x100; i++, x = x ^ xtime(x))
{
- ilog[i] = x;
- log[x] = i;
+ gf2_exp[i] = x;
+ gf2_log[x] = i;
}
/* Invalid. */
- log[0] = 0;
- /* The loop above sets log[1] = 0xff, which is correct,
- * but log[1] = 0 is nicer. */
- log[1] = 0;
+ gf2_log[0] = 0;
+ /* The loop above sets gf2_log[1] = 0xff, which is correct,
+ * but gf2_log[1] = 0 is nicer. */
+ gf2_log[1] = 0;
}
static unsigned
mult(unsigned a, unsigned b)
{
- return (a && b) ? ilog[ (log[a] + log[b]) % 255] : 0;
+ return (a && b) ? gf2_exp[ (gf2_log[a] + gf2_log[b]) % 255] : 0;
}
static unsigned
invert(unsigned x)
{
- return x ? ilog[0xff - log[x]] : 0;
+ return x ? gf2_exp[0xff - gf2_log[x]] : 0;
}
static unsigned
@@ -188,8 +188,8 @@ main(int argc, char **argv)
compute_log();
if (argc == 1)
{
- display_byte_table("log", log);
- display_byte_table("ilog", ilog);
+ display_byte_table("gf2_log", gf2_log);
+ display_byte_table("gf2_exp", gf2_exp);
compute_sbox();
display_byte_table("sbox", sbox);
--
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