我正在将程序从 Delphi 2009 移植到 XE4 并遇到 LockBox 加密问题。加密/解密单元仅使用一个组件:
interface
function Encrypt(aStr: String): String;
function Decrypt(aStr: String): String;
function NeedEncrypt(): Boolean;
implementation
uses
windows,
strUtils,
LbClass;
var
LbRijndael: TLbRijndael;
localNeedEncrypt: Boolean;
function NeedEncrypt(): Boolean;
begin
Result := localNeedEncrypt;
localNeedEncrypt := False;
end;
function Encrypt(aStr: AnsiString): AnsiString;
begin
Result := aStr;
if RightStr(aStr, 2) = '==' then
Exit;
Result := LbRijndael.EncryptString(aStr);
end;
function Decrypt(aStr: AnsiString): AnsiString;
begin
Result := aStr;
if RightStr(aStr, 2) = '==' then
Result := LbRijndael.DecryptString(aStr)
else
localNeedEncrypt := True;
end;
initialization
LbRijndael := TLbRijndael.Create(nil);
LbRijndael.GenerateKey('KEYABC');
LbRijndael.CipherMode := cmECB;
LbRijndael.KeySize := ks128;
end.
据我了解,Delphi XE4 没有 LockBox2。我可以为此目的使用 LockBox3 吗?如果是,我可以使用刚需要的单元而不安装到 Delphi 中(这是用 LockBox2 完成的)吗?