Delphi Hash算法[2] MD5

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Delphi Hash算法[2] MD5

引用单元：IdHashMessageDigest,IdHash;

1、字符串。输出MD 32位：

var
  md5:TIdHashMessageDigest5;
  dd:T4x4LongWordRecord;
begin
  md5:=TIdHashMessageDigest5.Create;
  dd:=md5.HashValue(Memo1.Text);
  Memo2.Text:=md5.AsHex(dd);       //默认是32位长度字符
  md5.Free;
end;

2、字符串。输出MD 16位

var
  md5:TIdHashMessageDigest5;
  dd:T4x4LongWordRecord;
begin
  md5:=TIdHashMessageDigest5.Create;
  dd:=md5.HashValue(Memo1.Text);
  Memo2.Text:= Copy(md5.AsHex(dd),9,16);  
  md5.Free;
end;

3、文件

var
  md5:TIdHashMessageDigest5;
  dd:T4x4LongWordRecord;
  sFileStream:TFileStream;
begin
  try
    md5:=TIdHashMessageDigest5.Create;
    if OpenDialog1.Execute then begin
      sFileStream:=TFileStream.Create(OpenDialog1.FileName,fmOpenRead or fmShareExclusive);     //文件流
      dd:=md5.HashValue(sFileStream);
      Memo2.Text:= md5.AsHex(dd);  //默认是32位长度字符
      sFileStream.Free;
    end;
  finally
    md5.Free;
  end;
end;

　　

 

 

 

创建时间：2021.04.29　　更新时间：