ninja 2.0.0

Encryption and Decryption cryptographic algorithms exposed as Dart's Converter and Codec interfaces.

ninja

Encryption and Decryption cryptographic algorithms exposed as Dart's Converter and Codec interfaces.

AES

AES is symmetric-key encryption algorithm. Class AES implements Converter<String, String> to encrypt and decrypt data. It expects a key. By default, PKCS7Padded is used for padding. This can be configured using padder parameter.

Encryption

Use encode method to encode clear text.

main() {
  final aes = AES.fromBytes(Uint8List.fromList(List.generate(16, (i) => i)));
  String value = aes.encode('Dart');
  print(value);
}

Decryption

Use decode method to decode to clear text.

main() {
  final aes = AES.fromBytes(Uint8List.fromList(List.generate(16, (i) => i)));
  String decoded = aes.decode('3347391e8789852b5c1b6ff1d3c44d0c');
  print(decoded);
}

RSA

RSA is an asymmetric-key encryption algorithm. Class RSA implements Converter<String, String> to encrypt and decrypt data.

It expects a key. If the key is RSAPublicKey, it can only encode. If the key is RSAPrivateKey, it can both encode and decode.

Encryption

main() {
  final key = RSAPublicKey(
      BigInt.parse(
          "20620915813302906913761247666337410938401372343750709187749515126790853245302593205328533062154315527282056175455193812046134139935830222032257750866653461677566720508752544506266533943725970345491747964654489405936145559121373664620352701801574863309087932865304205561439525871868738640172656811470047745445089832193075388387376667722031640892525639171016297098395245887609359882693921643396724693523583076582208970794545581164952427577506035951122669158313095779596666008591745562008787129160302313244329988240795948461701615228062848622019620094307696506764461083870202605984497833670577046553861732258592935325691"),
      BigInt.parse("65537"));
    final rsa = RSA(key);
    String encoded =
        rsa.encode('Lorem ipsum dolor sit amet, consectetur adipiscing elit...');
    print(encoded);
}

Decryption

main() {
  final key = RSAPrivateKey(
      BigInt.parse(
          "20620915813302906913761247666337410938401372343750709187749515126790853245302593205328533062154315527282056175455193812046134139935830222032257750866653461677566720508752544506266533943725970345491747964654489405936145559121373664620352701801574863309087932865304205561439525871868738640172656811470047745445089832193075388387376667722031640892525639171016297098395245887609359882693921643396724693523583076582208970794545581164952427577506035951122669158313095779596666008591745562008787129160302313244329988240795948461701615228062848622019620094307696506764461083870202605984497833670577046553861732258592935325691"),
      BigInt.parse("65537"),
      BigInt.parse(
          "11998058528661160053642124235359844880039079149364512302169225182946866898849176558365314596732660324493329967536772364327680348872134489319530228055102152992797567579226269544119435926913937183793755182388650533700918602627770886358900914370472445911502526145837923104029967812779021649252540542517598618021899291933220000807916271555680217608559770825469218984818060775562259820009637370696396889812317991880425127772801187664191059506258517954313903362361211485802288635947903604738301101038823790599295749578655834195416886345569976295245464597506584866355976650830539380175531900288933412328525689718517239330305"),
      BigInt.parse(
          "144173682842817587002196172066264549138375068078359231382946906898412792452632726597279520229873489736777248181678202636100459215718497240474064366927544074501134727745837254834206456400508719134610847814227274992298238973375146473350157304285346424982280927848339601514720098577525635486320547905945936448443"),
      BigInt.parse(
          "143028293421514654659358549214971921584534096938352096320458818956414890934365483375293202045679474764569937266017713262196941957149321696805368542065644090886347646782188634885321277533175667840285448510687854061424867903968633218073060468434469761149335255007464091258725753837522484082998329871306803923137"));

  final rsa = RSA(key);
  String decoded = rsa.decode(encoded);
  print(decoded);
}