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Prevent range check exception #60

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Prevent range check exception #60

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0361a7d
Updated contributors list and copyright year
MHumm Oct 29, 2023
2627cfd
Prevent rangechecking Error
EdwinDijkshoorn Nov 15, 2023
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3 changes: 2 additions & 1 deletion NOTICE.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ DEC - Delphi Encryption Compendium
Version 6.5

Copyright (c) 2018 - 2020 Norman Gallery (ng931884 [at] gmx [dot] de)
Copyright (c) 2016 - 2022 Markus Humm (markus [dot] humm [at] googlemail [dot] com) (main contact)
Copyright (c) 2016 - 2023 Markus Humm (markus [dot] humm [at] googlemail [dot] com) (main contact)
Copyright (c) 2008 - 2019 Frederik A. Winkelsdorf (winkelsdorf [at] gmail [dot] com)
Copyright (c) 1999 - 2008 Hagen Reddmann (HaReddmann [at] T-Online [dot] de)

Expand All @@ -27,6 +27,7 @@ Gloegg
pierangelodalben
denovosoftware
alexrayne
Stevie

Parts of the work loosely based on the works of Wolfgang Erhardt, who is
unfortunately dead already.
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6 changes: 4 additions & 2 deletions Source/DECCipherModesGCM.pas
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Expand Up @@ -608,7 +608,8 @@ procedure TGCM.DecodeGCM(Source, Dest: TBytes; Size: Integer);
a_tag := XOR_T128(CalcGaloisHash(DataToAuthenticate, Source, Size), FE_K_Y0);

Setlength(FCalcAuthenticationTag, FCalcAuthenticationTagLength);
Move(a_tag[0], FCalcAuthenticationTag[0], FCalcAuthenticationTagLength);
if (FCalcAuthenticationTagLength > 0) then
Move(a_tag[0], FCalcAuthenticationTag[0], FCalcAuthenticationTagLength);

// Check for correct authentication result is in Done of DECCipherModes
// if not IsEqual(FExpectedAuthenticationTag, FCalcAuthenticationTag) then
Expand Down Expand Up @@ -646,7 +647,8 @@ procedure TGCM.EncodeGCM(Source, Dest: TBytes; Size: Integer);

AuthTag := XOR_T128(CalcGaloisHash(DataToAuthenticate, Dest, Size), FE_K_Y0);
Setlength(FCalcAuthenticationTag, FCalcAuthenticationTagLength);
Move(AuthTag[0], FCalcAuthenticationTag[0], FCalcAuthenticationTagLength);
if (FCalcAuthenticationTagLength > 0) then
Move(AuthTag[0], FCalcAuthenticationTag[0], FCalcAuthenticationTagLength);
end;

function TGCM.EncodeT128(Value: T128): T128;
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