# HG changeset patch
# User unc0rr
# Date 1289657488 -10800
# Node ID 094a7fca848ba58b79bc23f07dc4816913955e1c
# Parent  ac43dfa56baf7b471e42b5a70ecb379dbff2fc54
Bye-bye sha-1

diff -r ac43dfa56baf -r 094a7fca848b misc/uSHA.pas
--- a/misc/uSHA.pas	Sat Nov 13 17:05:34 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,166 +0,0 @@
-(*
- * Hedgewars, a free turn based strategy game
- * Copyright (c) 2004-2010 Andrey Korotaev <unC0Rr@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- *)
-
-{$INCLUDE "options.inc"}
-
-unit uSHA;
-interface
-uses SDLh;
-
-type TSHA1Context = packed record
-                    H: array[0..4] of LongWord;
-                    Length, CurrLength: Int64;
-                    Buf: array[0..63] of byte;
-                    end;
-     TSHA1Digest =  array[0..4] of LongWord;
-
-procedure SHA1Init(var Context: TSHA1Context);
-procedure SHA1Update(var Context: TSHA1Context; Buf: PByteArray; Length: LongWord);
-procedure SHA1UpdateLongwords(var Context: TSHA1Context; Buf: PLongwordArray; Length: LongWord);
-function  SHA1Final(Context: TSHA1Context): TSHA1Digest;
-
-implementation
-
-function rol(x: LongWord; y: Byte): LongWord;
-begin
-  rol:= (X shl y) or (X shr (32 - y))
-end;
-
-function Ft(t, b, c, d: LongWord): LongWord;
-begin
-case t of
-      0..19: Ft := (b and c) or ((not b) and d);
-     20..39: Ft :=  b xor c xor d;
-     40..59: Ft := (b and c) or (b and d) or (c and d);
-     else    Ft :=  b xor c xor d;
-  end;
-end;
-
-function Kt(t: Byte): LongWord;
-begin
-  case t of
-     0..19: Kt := $5A827999;
-    20..39: Kt := $6ED9EBA1;
-    40..59: Kt := $8F1BBCDC;
-  else
-    Kt := $CA62C1D6
-  end;
-end;
-
-
-procedure SHA1Hash(var Context: TSHA1Context);
-var S: array[0..4 ] of LongWord;
-    W: array[0..79] of LongWord;
-    i, t: LongWord;
-begin
-{$HINTS OFF}
-move(Context.H, S, sizeof(S));
-{$HINTS ON}
-for i:= 0 to 15 do
-    SDLNet_Write32(PLongWordArray(@Context.Buf)^[i], @W[i]);
-
-for i := 16 to 79 do
-    W[i] := rol(W[i - 3] xor W[i - 8] xor W[i - 14] xor W[i - 16], 1);
-
-for i := 0 to 79 do
-    begin
-    t:= rol(S[0], 5) + Ft(i, S[1], S[2], S[3]) + S[4] + W[i] + Kt(i);
-    S[4]:= S[3];
-    S[3]:= S[2];
-    S[2]:= rol(S[1], 30);
-    S[1]:= S[0];
-    S[0]:= t
-    end;
-
-for i := 0 to 4 do
-    Context.H[i]:= Context.H[i] + S[i]
-end;
-
-procedure SHA1Init(var Context: TSHA1Context);
-begin
-  with Context do
-       begin
-       Length    := 0;
-       CurrLength:= 0;
-       H[0]:= $67452301;
-       H[1]:= $EFCDAB89;
-       H[2]:= $98BADCFE;
-       H[3]:= $10325476;
-       H[4]:= $C3D2E1F0
-  end
-end;
-
-procedure SHA1Update(var Context: TSHA1Context; Buf: PByteArray; Length: LongWord);
-var i: Longword;
-begin
-for i:= 0 to Pred(Length) do
-    begin
-    Context.Buf[Context.CurrLength]:= Buf^[i];
-    inc(Context.CurrLength);
-    if Context.CurrLength = 64 then
-       begin
-       SHA1Hash(Context);
-       inc(Context.Length, 512);
-       Context.CurrLength:= 0
-       end
-    end
-end;
-
-procedure SHA1UpdateLongwords(var Context: TSHA1Context; Buf: PLongwordArray; Length: LongWord);
-var i: Longword;
-begin
-    for i:= 0 to Pred(Length div 4) do
-    begin
-        SDLNet_Write32(Buf^[i], @Context.Buf[Context.CurrLength]);
-        inc(Context.CurrLength, 4);
-        if Context.CurrLength = 64 then
-        begin
-            SHA1Hash(Context);
-            inc(Context.Length, 512);
-            Context.CurrLength:= 0
-        end
-    end
-end;
-
-function  SHA1Final(Context: TSHA1Context): TSHA1Digest;
-var i: LongWord;
-begin
-    Context.Length:= Context.Length + Context.CurrLength shl 3;
-    Context.Buf[Context.CurrLength]:= $80;
-    inc(Context.CurrLength);
-
-    if Context.CurrLength > 56 then
-    begin
-        FillChar(Context.Buf[Context.CurrLength], 64 - Context.CurrLength, 0);
-        Context.CurrLength:= 64;
-        SHA1Hash(Context);
-        Context.CurrLength:=0
-    end;
-
-    FillChar(Context.Buf[Context.CurrLength], 56 - Context.CurrLength, 0);
-
-    for i:= 56 to 63 do
-        Context.Buf[i] := (Context.Length shr ((63 - i) * 8)) and $FF;
-    SHA1Hash(Context);
-    for i:= 0 to 4 do
-        SHA1Final[i]:= Context.H[i];
-
-    FillChar(Context, sizeof(Context), 0)
-end;
-
-end.