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September 12, 2024 11:08
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Store encrypted values in INI file
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| program EncryptedIni; | |
| {$mode objfpc}{$H+} | |
| uses | |
| Classes, SysUtils, IniFiles, BlowFish, base64; | |
| type | |
| { TIniFileEx } | |
| TIniFileEx = class(TIniFile) | |
| private | |
| function EncryptString(aString: string): string; | |
| function DecryptString(aString: string): string; | |
| public | |
| EncryptionKey: String; | |
| function ReadEncryptedString(const Section, Ident, Default: string): string; | |
| procedure WriteEncryptedString(const Section, Ident, Value: String); | |
| end; | |
| var | |
| Ini: TIniFileEx; | |
| { TIniFileEx } | |
| // Source: https://www.tweaking4all.com/forum/delphi-lazarus-free-pascal/lazarus-how-to-quick-and-easy-encrypt-and-decrypt-text-with-blowfish/ | |
| function TIniFileEx.EncryptString(aString: string): string; | |
| var | |
| EncrytpStream:TBlowFishEncryptStream; | |
| StringStream:TStringStream; | |
| EncryptedString:string; | |
| begin | |
| StringStream := TStringStream.Create(''); | |
| EncrytpStream := TBlowFishEncryptStream.Create(EncryptionKey, StringStream); | |
| EncrytpStream.WriteAnsiString(aString); | |
| EncrytpStream.Free; | |
| EncryptedString := StringStream.DataString; | |
| StringStream.Free; | |
| EncryptString := EncodeStringBase64(EncryptedString); | |
| end; | |
| // Source: https://www.tweaking4all.com/forum/delphi-lazarus-free-pascal/lazarus-how-to-quick-and-easy-encrypt-and-decrypt-text-with-blowfish/ | |
| function TIniFileEx.DecryptString(aString: string): string; | |
| var | |
| DecrytpStream:TBlowFishDeCryptStream; | |
| StringStream:TStringStream; | |
| DecryptedString:string; | |
| begin | |
| StringStream := TStringStream.Create(DecodeStringBase64(aString)); | |
| DecrytpStream := TBlowFishDeCryptStream.Create(EncryptionKey, StringStream); | |
| DecryptedString := DecrytpStream.ReadAnsiString; | |
| DecrytpStream.Free; | |
| StringStream.Free; | |
| DecryptString := DecryptedString; | |
| end; | |
| function TIniFileEx.ReadEncryptedString(const Section, Ident, Default: string | |
| ): string; | |
| begin | |
| Result := DecryptString(ReadString(Section, Ident, Default)); | |
| end; | |
| procedure TIniFileEx.WriteEncryptedString(const Section, Ident, Value: String); | |
| begin | |
| WriteString(Section, Ident, EncryptString(Value)); | |
| end; | |
| const | |
| Sect = 'general'; | |
| begin | |
| Ini := TIniFileEx.Create('config.ini'); | |
| Ini.EncryptionKey := 'MY_SECRET_KEY'; | |
| Ini.WriteEncryptedString(Sect, 'password', '123456'); | |
| WriteLn('password: ', Ini.ReadEncryptedString(Sect, 'password', '')); | |
| WriteLn('password stored in INI: ', Ini.ReadString(Sect, 'password', '')); | |
| FreeAndNil(Ini); | |
| readln; | |
| end. |
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