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authorGeert Bosch <bosch@gcc.gnu.org>2002-03-08 21:11:04 +0100
committerGeert Bosch <bosch@gcc.gnu.org>2002-03-08 21:11:04 +0100
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treeb584a79288c93215b05fb451943291ccd039388b /gcc/ada/g-md5.adb
parent24965e7a8ac518b99a3bd7ef5b2d8d88f96bf514 (diff)
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41intnam.ads, [...]: Merge in ACT changes.
* 41intnam.ads, 42intnam.ads, 4aintnam.ads, 4cintnam.ads, 4dintnam.ads, 4gintnam.ads, 4hintnam.ads, 4lintnam.ads, 4mintnam.ads, 4pintnam.ads, 4rintnam.ads, 4sintnam.ads, 4uintnam.ads, 4vcalend.adb, 4zintnam.ads, 52system.ads, 5amastop.adb, 5asystem.ads, 5ataprop.adb, 5atpopsp.adb, 5avxwork.ads, 5bosinte.adb, 5bsystem.ads, 5esystem.ads, 5fsystem.ads, 5ftaprop.adb, 5ginterr.adb, 5gmastop.adb, 5gsystem.ads, 5gtaprop.adb, 5gtasinf.adb, 5gtasinf.ads, 5hparame.ads, 5hsystem.ads, 5htaprop.adb, 5htraceb.adb, 5itaprop.adb, 5ksystem.ads, 5kvxwork.ads, 5lintman.adb, 5lsystem.ads, 5mvxwork.ads, 5ninmaop.adb, 5nosinte.ads, 5ntaprop.adb, 5ointerr.adb, 5omastop.adb, 5oosinte.adb, 5osystem.ads, 5otaprop.adb, 5otaspri.ads, 5pvxwork.ads, 5qtaprop.adb, 5sintman.adb, 5ssystem.ads, 5staprop.adb, 5stpopse.adb, 5svxwork.ads, 5tosinte.ads, 5uintman.adb, 5vasthan.adb, 5vinmaop.adb, 5vinterr.adb, 5vintman.adb, 5vmastop.adb, 5vparame.ads, 5vsystem.ads, 5vtaprop.adb, 5vtpopde.adb, 5wmemory.adb, 5wsystem.ads, 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sem_ch8.ads, sem_ch9.adb, sem_disp.adb, sem_dist.adb, sem_elab.adb, sem_elim.adb, sem_elim.ads, sem_eval.adb, sem_intr.adb, sem_mech.adb, sem_prag.adb, sem_res.adb, sem_type.adb, sem_util.adb, sem_util.ads, sem_vfpt.adb, sem_warn.adb, sinfo.adb, sinfo.ads, sinfo.h, sinput-l.adb, sinput-l.ads, sinput.adb, sinput.ads, snames.adb, snames.ads, snames.h, sprint.adb, sprint.ads, stringt.adb, stringt.ads, stringt.h, style.adb, switch.adb, switch.ads, sysdep.c, system.ads, table.adb, targparm.adb, targparm.ads, targtyps.c, tbuild.adb, tbuild.ads, tracebak.c, trans.c, tree_gen.adb, tree_io.adb, treepr.adb, treepr.ads, treeprs.ads, treeprs.adt, ttypes.ads, types.adb, types.ads, types.h, uintp.ads, urealp.ads, usage.adb, utils.c, utils2.c, validsw.adb, xnmake.adb, xr_tabls.adb, xr_tabls.ads, xref_lib.adb, xref_lib.ads : Merge in ACT changes. * 1ssecsta.adb, 1ssecsta.ads, a-chlat9.ads, a-cwila9.ads, g-enblsp.adb, g-md5.adb, g-md5.ads, gnatname.adb, gnatname.ads, mkdir.c, osint-b.adb, osint-b.ads, osint-c.adb, osint-c.ads, osint-l.adb, osint-l.ads, osint-m.adb, osint-m.ads : New files * 3lsoccon.ads, 5qparame.ads, 5qvxwork.ads, 5smastop.adb, 5zparame.ads, gnatmain.adb, gnatmain.ads, gnatpsys.adb : Removed * mdllfile.adb, mdllfile.ads, mdlltool.adb, mdlltool.ads : Renamed to mdll-fil.ad[bs] and mdll-util.ad[bs] * mdll-fil.adb, mdll-fil.ads, mdll-utl.adb, mdll-utl.ads : Renamed from mdllfile.ad[bs] and mdlltool.ad[bs] From-SVN: r50451
Diffstat (limited to 'gcc/ada/g-md5.adb')
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diff --git a/gcc/ada/g-md5.adb b/gcc/ada/g-md5.adb
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@@ -0,0 +1,551 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- G N A T . M D 5 --
+-- --
+-- B o d y --
+-- --
+-- $Revision$
+-- --
+-- Copyright (C) 2002 Ada Core Technologies, Inc. --
+-- --
+-- GNAT is free software; you can redistribute it and/or modify it under --
+-- terms of the GNU General Public License as published by the Free Soft- --
+-- ware Foundation; either version 2, or (at your option) any later ver- --
+-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT 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 distributed with GNAT; see file COPYING. If not, write --
+-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
+-- MA 02111-1307, USA. --
+-- --
+-- As a special exception, if other files instantiate generics from this --
+-- unit, or you link this unit with other files to produce an executable, --
+-- this unit does not by itself cause the resulting executable to be --
+-- covered by the GNU General Public License. This exception does not --
+-- however invalidate any other reasons why the executable file might be --
+-- covered by the GNU Public License. --
+-- --
+-- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- --
+------------------------------------------------------------------------------
+
+with Ada.Unchecked_Conversion;
+
+package body GNAT.MD5 is
+
+ use Interfaces;
+
+ Padding : constant String :=
+ (1 => Character'Val (16#80#), 2 .. 64 => ASCII.NUL);
+
+ Hex_Digit : constant array (Unsigned_32 range 0 .. 15) of Character :=
+ ('0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
+ -- Look-up table for each hex digit of the Message-Digest.
+ -- Used by function Digest (Context).
+
+ -- The sixten values used to rotate the context words.
+ -- Four for each rounds. Used in procedure Transform.
+
+ -- Round 1
+
+ S11 : constant := 7;
+ S12 : constant := 12;
+ S13 : constant := 17;
+ S14 : constant := 22;
+
+ -- Round 2
+
+ S21 : constant := 5;
+ S22 : constant := 9;
+ S23 : constant := 14;
+ S24 : constant := 20;
+
+ -- Round 3
+
+ S31 : constant := 4;
+ S32 : constant := 11;
+ S33 : constant := 16;
+ S34 : constant := 23;
+
+ -- Round 4
+
+ S41 : constant := 6;
+ S42 : constant := 10;
+ S43 : constant := 15;
+ S44 : constant := 21;
+
+ type Sixteen_Words is array (Natural range 0 .. 15)
+ of Interfaces.Unsigned_32;
+ -- Sixteen 32-bit words, converted from block of 64 characters.
+ -- Used in procedure Decode and Transform.
+
+ procedure Decode
+ (Block : String;
+ X : out Sixteen_Words);
+ -- Convert a String of 64 characters into 16 32-bit numbers
+
+ -- The following functions (F, FF, G, GG, H, HH, I and II) are the
+ -- equivalent of the macros of the same name in the example
+ -- C implementation in the annex of RFC 1321.
+
+ function F (X, Y, Z : Unsigned_32) return Unsigned_32;
+ pragma Inline (F);
+
+ procedure FF
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive);
+ pragma Inline (FF);
+
+ function G (X, Y, Z : Unsigned_32) return Unsigned_32;
+ pragma Inline (G);
+
+ procedure GG
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive);
+ pragma Inline (GG);
+
+ function H (X, Y, Z : Unsigned_32) return Unsigned_32;
+ pragma Inline (H);
+
+ procedure HH
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive);
+ pragma Inline (HH);
+
+ function I (X, Y, Z : Unsigned_32) return Unsigned_32;
+ pragma Inline (I);
+
+ procedure II
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive);
+ pragma Inline (II);
+
+ procedure Transform
+ (C : in out Context;
+ Block : String);
+ -- Process one block of 64 characters.
+
+ ------------
+ -- Decode --
+ ------------
+
+ procedure Decode
+ (Block : String;
+ X : out Sixteen_Words)
+ is
+ Cur : Positive := Block'First;
+
+ begin
+ pragma Assert (Block'Length = 64);
+
+ for Index in X'Range loop
+ X (Index) :=
+ Unsigned_32 (Character'Pos (Block (Cur))) +
+ Shift_Left (Unsigned_32 (Character'Pos (Block (Cur + 1))), 8) +
+ Shift_Left (Unsigned_32 (Character'Pos (Block (Cur + 2))), 16) +
+ Shift_Left (Unsigned_32 (Character'Pos (Block (Cur + 3))), 24);
+ Cur := Cur + 4;
+ end loop;
+ end Decode;
+
+ ------------
+ -- Digest --
+ ------------
+
+ function Digest (C : Context) return Message_Digest is
+ Result : Message_Digest;
+
+ Cur : Natural := 1;
+ -- Index in Result where the next character will be placed.
+
+ procedure Convert (X : Unsigned_32);
+ -- Put the contribution of one of the four words (A, B, C, D) of the
+ -- Context in Result. Increments Cur.
+
+ -------------
+ -- Convert --
+ -------------
+
+ procedure Convert (X : Unsigned_32) is
+ Y : Unsigned_32 := X;
+
+ begin
+ for J in 1 .. 4 loop
+ Result (Cur + 1) := Hex_Digit (Y and Unsigned_32'(16#0F#));
+ Y := Shift_Right (Y, 4);
+ Result (Cur) := Hex_Digit (Y and Unsigned_32'(16#0F#));
+ Y := Shift_Right (Y, 4);
+ Cur := Cur + 2;
+ end loop;
+ end Convert;
+
+ -- Start of processing for Digest
+
+ begin
+ Convert (C.A);
+ Convert (C.B);
+ Convert (C.C);
+ Convert (C.D);
+ return Result;
+ end Digest;
+
+ function Digest (S : String) return Message_Digest is
+ C : Context;
+
+ begin
+ Update (C, S);
+ return Digest (C);
+ end Digest;
+
+ function Digest
+ (A : Ada.Streams.Stream_Element_Array)
+ return Message_Digest
+ is
+ C : Context;
+
+ begin
+ Update (C, A);
+ return Digest (C);
+ end Digest;
+
+ -------
+ -- F --
+ -------
+
+ function F (X, Y, Z : Unsigned_32) return Unsigned_32 is
+ begin
+ return (X and Y) or ((not X) and Z);
+ end F;
+
+ --------
+ -- FF --
+ --------
+
+ procedure FF
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive)
+ is
+ begin
+ A := A + F (B, C, D) + X + AC;
+ A := Rotate_Left (A, S);
+ A := A + B;
+ end FF;
+
+ -------
+ -- G --
+ -------
+
+ function G (X, Y, Z : Unsigned_32) return Unsigned_32 is
+ begin
+ return (X and Z) or (Y and (not Z));
+ end G;
+
+ --------
+ -- GG --
+ --------
+
+ procedure GG
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive)
+ is
+ begin
+ A := A + G (B, C, D) + X + AC;
+ A := Rotate_Left (A, S);
+ A := A + B;
+ end GG;
+
+ -------
+ -- H --
+ -------
+
+ function H (X, Y, Z : Unsigned_32) return Unsigned_32 is
+ begin
+ return X xor Y xor Z;
+ end H;
+
+ --------
+ -- HH --
+ --------
+
+ procedure HH
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive)
+ is
+ begin
+ A := A + H (B, C, D) + X + AC;
+ A := Rotate_Left (A, S);
+ A := A + B;
+ end HH;
+
+ -------
+ -- I --
+ -------
+
+ function I (X, Y, Z : Unsigned_32) return Unsigned_32 is
+ begin
+ return Y xor (X or (not Z));
+ end I;
+
+ --------
+ -- II --
+ --------
+
+ procedure II
+ (A : in out Unsigned_32;
+ B, C, D : Unsigned_32;
+ X : Unsigned_32;
+ AC : Unsigned_32;
+ S : Positive)
+ is
+ begin
+ A := A + I (B, C, D) + X + AC;
+ A := Rotate_Left (A, S);
+ A := A + B;
+ end II;
+
+ ---------------
+ -- Transform --
+ ---------------
+
+ procedure Transform
+ (C : in out Context;
+ Block : String)
+ is
+ X : Sixteen_Words;
+
+ AA : Unsigned_32 := C.A;
+ BB : Unsigned_32 := C.B;
+ CC : Unsigned_32 := C.C;
+ DD : Unsigned_32 := C.D;
+
+ begin
+ pragma Assert (Block'Length = 64);
+
+ Decode (Block, X);
+
+ -- Round 1
+
+ FF (AA, BB, CC, DD, X (00), 16#D76aa478#, S11); -- 1
+ FF (DD, AA, BB, CC, X (01), 16#E8c7b756#, S12); -- 2
+ FF (CC, DD, AA, BB, X (02), 16#242070db#, S13); -- 3
+ FF (BB, CC, DD, AA, X (03), 16#C1bdceee#, S14); -- 4
+
+ FF (AA, BB, CC, DD, X (04), 16#f57c0faf#, S11); -- 5
+ FF (DD, AA, BB, CC, X (05), 16#4787c62a#, S12); -- 6
+ FF (CC, DD, AA, BB, X (06), 16#a8304613#, S13); -- 7
+ FF (BB, CC, DD, AA, X (07), 16#fd469501#, S14); -- 8
+
+ FF (AA, BB, CC, DD, X (08), 16#698098d8#, S11); -- 9
+ FF (DD, AA, BB, CC, X (09), 16#8b44f7af#, S12); -- 10
+ FF (CC, DD, AA, BB, X (10), 16#ffff5bb1#, S13); -- 11
+ FF (BB, CC, DD, AA, X (11), 16#895cd7be#, S14); -- 12
+
+ FF (AA, BB, CC, DD, X (12), 16#6b901122#, S11); -- 13
+ FF (DD, AA, BB, CC, X (13), 16#fd987193#, S12); -- 14
+ FF (CC, DD, AA, BB, X (14), 16#a679438e#, S13); -- 15
+ FF (BB, CC, DD, AA, X (15), 16#49b40821#, S14); -- 16
+
+ -- Round 2
+
+ GG (AA, BB, CC, DD, X (01), 16#f61e2562#, S21); -- 17
+ GG (DD, AA, BB, CC, X (06), 16#c040b340#, S22); -- 18
+ GG (CC, DD, AA, BB, X (11), 16#265e5a51#, S23); -- 19
+ GG (BB, CC, DD, AA, X (00), 16#e9b6c7aa#, S24); -- 20
+
+ GG (AA, BB, CC, DD, X (05), 16#d62f105d#, S21); -- 21
+ GG (DD, AA, BB, CC, X (10), 16#02441453#, S22); -- 22
+ GG (CC, DD, AA, BB, X (15), 16#d8a1e681#, S23); -- 23
+ GG (BB, CC, DD, AA, X (04), 16#e7d3fbc8#, S24); -- 24
+
+ GG (AA, BB, CC, DD, X (09), 16#21e1cde6#, S21); -- 25
+ GG (DD, AA, BB, CC, X (14), 16#c33707d6#, S22); -- 26
+ GG (CC, DD, AA, BB, X (03), 16#f4d50d87#, S23); -- 27
+ GG (BB, CC, DD, AA, X (08), 16#455a14ed#, S24); -- 28
+
+ GG (AA, BB, CC, DD, X (13), 16#a9e3e905#, S21); -- 29
+ GG (DD, AA, BB, CC, X (02), 16#fcefa3f8#, S22); -- 30
+ GG (CC, DD, AA, BB, X (07), 16#676f02d9#, S23); -- 31
+ GG (BB, CC, DD, AA, X (12), 16#8d2a4c8a#, S24); -- 32
+
+ -- Round 3
+
+ HH (AA, BB, CC, DD, X (05), 16#fffa3942#, S31); -- 33
+ HH (DD, AA, BB, CC, X (08), 16#8771f681#, S32); -- 34
+ HH (CC, DD, AA, BB, X (11), 16#6d9d6122#, S33); -- 35
+ HH (BB, CC, DD, AA, X (14), 16#fde5380c#, S34); -- 36
+
+ HH (AA, BB, CC, DD, X (01), 16#a4beea44#, S31); -- 37
+ HH (DD, AA, BB, CC, X (04), 16#4bdecfa9#, S32); -- 38
+ HH (CC, DD, AA, BB, X (07), 16#f6bb4b60#, S33); -- 39
+ HH (BB, CC, DD, AA, X (10), 16#bebfbc70#, S34); -- 40
+
+ HH (AA, BB, CC, DD, X (13), 16#289b7ec6#, S31); -- 41
+ HH (DD, AA, BB, CC, X (00), 16#eaa127fa#, S32); -- 42
+ HH (CC, DD, AA, BB, X (03), 16#d4ef3085#, S33); -- 43
+ HH (BB, CC, DD, AA, X (06), 16#04881d05#, S34); -- 44
+
+ HH (AA, BB, CC, DD, X (09), 16#d9d4d039#, S31); -- 45
+ HH (DD, AA, BB, CC, X (12), 16#e6db99e5#, S32); -- 46
+ HH (CC, DD, AA, BB, X (15), 16#1fa27cf8#, S33); -- 47
+ HH (BB, CC, DD, AA, X (02), 16#c4ac5665#, S34); -- 48
+
+ -- Round 4
+
+ II (AA, BB, CC, DD, X (00), 16#f4292244#, S41); -- 49
+ II (DD, AA, BB, CC, X (07), 16#432aff97#, S42); -- 50
+ II (CC, DD, AA, BB, X (14), 16#ab9423a7#, S43); -- 51
+ II (BB, CC, DD, AA, X (05), 16#fc93a039#, S44); -- 52
+
+ II (AA, BB, CC, DD, X (12), 16#655b59c3#, S41); -- 53
+ II (DD, AA, BB, CC, X (03), 16#8f0ccc92#, S42); -- 54
+ II (CC, DD, AA, BB, X (10), 16#ffeff47d#, S43); -- 55
+ II (BB, CC, DD, AA, X (01), 16#85845dd1#, S44); -- 56
+
+ II (AA, BB, CC, DD, X (08), 16#6fa87e4f#, S41); -- 57
+ II (DD, AA, BB, CC, X (15), 16#fe2ce6e0#, S42); -- 58
+ II (CC, DD, AA, BB, X (06), 16#a3014314#, S43); -- 59
+ II (BB, CC, DD, AA, X (13), 16#4e0811a1#, S44); -- 60
+
+ II (AA, BB, CC, DD, X (04), 16#f7537e82#, S41); -- 61
+ II (DD, AA, BB, CC, X (11), 16#bd3af235#, S42); -- 62
+ II (CC, DD, AA, BB, X (02), 16#2ad7d2bb#, S43); -- 63
+ II (BB, CC, DD, AA, X (09), 16#eb86d391#, S44); -- 64
+
+ C.A := C.A + AA;
+ C.B := C.B + BB;
+ C.C := C.C + CC;
+ C.D := C.D + DD;
+
+ end Transform;
+
+ ------------
+ -- Update --
+ ------------
+
+ procedure Update
+ (C : in out Context;
+ Input : String)
+ is
+ Cur : Positive := Input'First;
+ Last_Block : String (1 .. 64);
+
+ begin
+ while Cur + 63 <= Input'Last loop
+ Transform (C, Input (Cur .. Cur + 63));
+ Cur := Cur + 64;
+ end loop;
+
+ Last_Block (1 .. Input'Last - Cur + 1) := Input (Cur .. Input'Last);
+
+ if Input'Last - Cur + 1 > 56 then
+ Cur := Input'Last - Cur + 2;
+ Last_Block (Cur .. 64) := Padding (1 .. 64 - Cur + 1);
+ Transform (C, Last_Block);
+ Last_Block := (others => ASCII.NUL);
+
+ else
+ Cur := Input'Last - Cur + 2;
+ Last_Block (Cur .. 56) := Padding (1 .. 56 - Cur + 1);
+ end if;
+
+ -- Add the input length as 8 characters
+
+ Last_Block (57 .. 64) := (others => ASCII.NUL);
+
+ declare
+ L : Unsigned_64 := Unsigned_64 (Input'Length) * 8;
+
+ begin
+ Cur := 57;
+ while L > 0 loop
+ Last_Block (Cur) := Character'Val (L and 16#Ff#);
+ L := Shift_Right (L, 8);
+ Cur := Cur + 1;
+ end loop;
+ end;
+
+ Transform (C, Last_Block);
+ end Update;
+
+ procedure Update
+ (C : in out Context;
+ Input : Ada.Streams.Stream_Element_Array)
+ is
+ subtype Stream_Array is Ada.Streams.Stream_Element_Array (Input'Range);
+ subtype Stream_String is
+ String (1 + Integer (Input'First) .. 1 + Integer (Input'Last));
+
+ function To_String is new Ada.Unchecked_Conversion
+ (Stream_Array, Stream_String);
+
+ String_Input : constant String := To_String (Input);
+ begin
+ Update (C, String_Input);
+ end Update;
+
+ -----------------
+ -- Wide_Digest --
+ -----------------
+
+ function Wide_Digest (W : Wide_String) return Message_Digest is
+ C : Context;
+
+ begin
+ Wide_Update (C, W);
+ return Digest (C);
+ end Wide_Digest;
+
+ -----------------
+ -- Wide_Update --
+ -----------------
+
+ procedure Wide_Update
+ (C : in out Context;
+ Input : Wide_String)
+ is
+
+ String_Input : String (1 .. 2 * Input'Length);
+ Cur : Positive := 1;
+
+ begin
+ for Index in Input'Range loop
+ String_Input (Cur) :=
+ Character'Val
+ (Unsigned_32 (Wide_Character'Pos (Input (Index))) and 16#FF#);
+ Cur := Cur + 1;
+ String_Input (Cur) :=
+ Character'Val
+ (Shift_Right (Unsigned_32 (Wide_Character'Pos (Input (Index))), 8)
+ and 16#FF#);
+ Cur := Cur + 1;
+ end loop;
+
+ Update (C, String_Input);
+ end Wide_Update;
+
+end GNAT.MD5;