From 4a7e9edcc92b08a285ea24549fd8c813d10b63b9 Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Mon, 13 Sep 2010 15:21:31 +0000
Subject: First set of changes for avoiding use implicit vector->pointer
 conversions

---
 src/block/blowfish/blowfish.cpp | 35 ++++++++++++++++++-----------------
 src/block/blowfish/blowfish.h   |  3 ++-
 2 files changed, 20 insertions(+), 18 deletions(-)

(limited to 'src/block/blowfish')

diff --git a/src/block/blowfish/blowfish.cpp b/src/block/blowfish/blowfish.cpp
index d0b182a84..6e4ad5b28 100644
--- a/src/block/blowfish/blowfish.cpp
+++ b/src/block/blowfish/blowfish.cpp
@@ -15,10 +15,10 @@ namespace Botan {
 */
 void Blowfish::encrypt_n(const byte in[], byte out[], u32bit blocks) const
    {
-   const u32bit* S1 = S + 0;
-   const u32bit* S2 = S + 256;
-   const u32bit* S3 = S + 512;
-   const u32bit* S4 = S + 768;
+   const u32bit* S1 = &S[0];
+   const u32bit* S2 = &S[256];
+   const u32bit* S3 = &S[512];
+   const u32bit* S4 = &S[768];
 
    for(u32bit i = 0; i != blocks; ++i)
       {
@@ -50,10 +50,10 @@ void Blowfish::encrypt_n(const byte in[], byte out[], u32bit blocks) const
 */
 void Blowfish::decrypt_n(const byte in[], byte out[], u32bit blocks) const
    {
-   const u32bit* S1 = S + 0;
-   const u32bit* S2 = S + 256;
-   const u32bit* S3 = S + 512;
-   const u32bit* S4 = S + 768;
+   const u32bit* S1 = &S[0];
+   const u32bit* S2 = &S[256];
+   const u32bit* S3 = &S[512];
+   const u32bit* S4 = &S[768];
 
    for(u32bit i = 0; i != blocks; ++i)
       {
@@ -92,22 +92,22 @@ void Blowfish::key_schedule(const byte key[], u32bit length)
                           key[(k+2) % length], key[(k+3) % length]);
 
    u32bit L = 0, R = 0;
-   generate_sbox(P,  18,  L, R);
-   generate_sbox(S, 1024, L, R);
+   generate_sbox(P, L, R);
+   generate_sbox(S, L, R);
    }
 
 /*
 * Generate one of the Sboxes
 */
-void Blowfish::generate_sbox(u32bit Box[], u32bit size,
+void Blowfish::generate_sbox(MemoryRegion<u32bit>& box,
                              u32bit& L, u32bit& R) const
    {
-   const u32bit* S1 = S + 0;
-   const u32bit* S2 = S + 256;
-   const u32bit* S3 = S + 512;
-   const u32bit* S4 = S + 768;
+   const u32bit* S1 = &S[0];
+   const u32bit* S2 = &S[256];
+   const u32bit* S3 = &S[512];
+   const u32bit* S4 = &S[768];
 
-   for(u32bit j = 0; j != size; j += 2)
+   for(u32bit j = 0; j != box.size(); j += 2)
       {
       for(u32bit k = 0; k != 16; k += 2)
          {
@@ -121,7 +121,8 @@ void Blowfish::generate_sbox(u32bit Box[], u32bit size,
          }
 
       u32bit T = R; R = L ^ P[16]; L = T ^ P[17];
-      Box[j] = L; Box[j+1] = R;
+      box[j] = L;
+      box[j+1] = R;
       }
    }
 
diff --git a/src/block/blowfish/blowfish.h b/src/block/blowfish/blowfish.h
index a178ec488..88122aed8 100644
--- a/src/block/blowfish/blowfish.h
+++ b/src/block/blowfish/blowfish.h
@@ -28,7 +28,8 @@ class BOTAN_DLL Blowfish : public BlockCipher
       Blowfish() : BlockCipher(8, 1, 56) {}
    private:
       void key_schedule(const byte[], u32bit);
-      void generate_sbox(u32bit[], u32bit, u32bit&, u32bit&) const;
+      void generate_sbox(MemoryRegion<u32bit>& box,
+                         u32bit& L, u32bit& R) const;
 
       static const u32bit P_INIT[18];
       static const u32bit S_INIT[1024];
-- 
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