Delphi xe7 MD5算法

uses IdHash, IdHashMessageDigest;

function GetStringMD5(const AInPut: string): string;
var
  MD5: TIdHashMessageDigest5;
{$IF CompilerVersion<20.0}
  Digest: T4x4LongWordRecord;
{$IFEND}
begin
  MD5 := TIdHashMessageDigest5.Create;
  try
{$IF CompilerVersion>20.0}   // Delphi 2009 +
    Result := LowerCase(MD5.HashStringAsHex(AInPut));
{$ELSE}
    Digest := MD5.HashValue(AInPut);
    Result := LowerCase(MD5.AsHex(Digest));
{$IFEND}
  finally
    MD5.Free;
  end;
end;

摘自：https://www.cnblogs.com/rtcmw/p/12678595.html