Dynamic Registry implementation

The implementation is based on Reflectable, a library that does efficient reflection in Dart. So, instead of registering all implemented algorithms manually, the implementation itself defines how it should be registered. The Registry class will then search through all imported cipher.* libraries to look for implementations to include.

This allows users to import api.dart and cherry pick certain implementations and still be able to use the generic constructors. It also makes it easier to add new implementations, adding a new file is all that it takes.

This also allows external libraries to add implementations to cipher, just by creating cipher.* libraries and importing them.

A side change is that I had to create a separate class for all ec curves. This positive side of this is again that users that only need one curve, don't have to import all curves.

Other changes: I moves the CTRStreamCipher and SICStreamCipher modes into the cipher.stream namespace and created CTRBlockCipher and SICBlockCipher using the StreamCipherAsBlockCipher class for completeness.

Author: stevenroose

.gitignore

@@ -10,4 +10,6 @@ pubspec.lock
 *.iml
 
 # dartdoc
-doc/
+doc/
+
+.pub/

lib/api.dart

@@ -17,9 +17,10 @@ import "dart:typed_data";
 
 import "package:bignum/bignum.dart";
 
-import "registry/registry.dart";
-export "registry/registry.dart";
+import "src/registry/registry.dart";
 
+part "src/api/algorithm.dart";
+part "src/api/registry_factory_exception.dart";
 part "src/api/assymetric_block_cipher.dart";
 part "src/api/assymetric_key.dart";
 part "src/api/assymetric_key_pair.dart";

lib/asymmetric/pkcs1.dart

@@ -5,15 +5,25 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.asymmetric.pkcs1;
+library cipher.asymmetric_block_cipher.pkcs1;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
+import "package:cipher/src/registry/registry.dart";
 import "package:cipher/src/impl/base_asymmetric_block_cipher.dart";
 
 class PKCS1Encoding extends BaseAsymmetricBlockCipher {
 
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.suffix("/PKCS1", (final String algorithmName, _) => () {
+        int sep = algorithmName.lastIndexOf("/");
+        AsymmetricBlockCipher underlyingCipher =
+            new AsymmetricBlockCipher(algorithmName.substring(0, sep));
+        return new PKCS1Encoding(underlyingCipher);
+      });
+
   static const _HEADER_LENGTH = 10;
 
   final AsymmetricBlockCipher _engine;

lib/asymmetric/rsa.dart

@@ -5,18 +5,21 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.asymmetric.rsa;
+library cipher.asymmetric_block_cipher.rsa;
 
 import "dart:typed_data";
 
 import "package:bignum/bignum.dart";
 
 import "package:cipher/api.dart";
-import "package:cipher/src/impl/base_asymmetric_block_cipher.dart";
 import "package:cipher/asymmetric/api.dart";
+import "package:cipher/src/impl/base_asymmetric_block_cipher.dart";
+import "package:cipher/src/registry/registry.dart";
 
 class RSAEngine extends BaseAsymmetricBlockCipher {
 
+  static final FactoryConfig FACTORY_CONFIG = new StaticFactoryConfig("RSA");
+
   bool _forEncryption;
   RSAAsymmetricKey _key;
   BigInteger _dP;

lib/block/aes_fast.dart

@@ -5,13 +5,14 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.block.aes_fast;
+library cipher.block_cipher.aes_fast;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
 import "package:cipher/src/impl/base_block_cipher.dart";
 import "package:cipher/src/ufixnum.dart";
+import "package:cipher/src/registry/registry.dart";
 
 /**
  * An implementation of the AES (Rijndael), from FIPS-197.
@@ -39,6 +40,8 @@ import "package:cipher/src/ufixnum.dart";
  */
 class AESFastEngine extends BaseBlockCipher {
 
+  static final FactoryConfig FACTORY_CONFIG = new StaticFactoryConfig("AES");
+
   static const _BLOCK_SIZE = 16;
 
   bool _forEncryption;

lib/modes/cbc.dart lib/block/modes/cbc.dart

@@ -5,16 +5,25 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.modes.cbc;
+library cipher.block_cipher.modes.cbc;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
+import "package:cipher/src/registry/registry.dart";
 import "package:cipher/src/impl/base_block_cipher.dart";
 
 /// Implementation of Cipher-Block-Chaining (CBC) mode on top of a [BlockCipher].
 class CBCBlockCipher extends BaseBlockCipher {
 
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.suffix("/CBC", (final String algorithmName, _) => () {
+        int sep = algorithmName.lastIndexOf("/");
+        BlockCipher underlying = new BlockCipher(algorithmName.substring(0, sep));
+        return new CBCBlockCipher(underlying);
+      });
+
   final BlockCipher _underlyingCipher;
 
   Uint8List _IV;

lib/modes/cfb.dart lib/block/modes/cfb.dart

@@ -5,16 +5,25 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.modes.cfb;
+library cipher.block_cipher.modes.cfb;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
+import "package:cipher/src/registry/registry.dart";
 import "package:cipher/src/impl/base_block_cipher.dart";
 
 /// Implementation of Cipher Feedback Mode (CFB) on top of a [BlockCipher].
 class CFBBlockCipher extends BaseBlockCipher {
 
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.regex(r"^(.+)/CFB-([0-9]+)$", (_, final Match match) => () {
+        BlockCipher underlying = new BlockCipher(match.group(1));
+        int blockSize = int.parse(match.group(2));
+        return new CFBBlockCipher(underlying, blockSize);
+      });
+
   final int blockSize;
 
   final BlockCipher _underlyingCipher;

lib/block/modes/ctr.dart

@@ -0,0 +1,28 @@
+// Copyright (c) 2013-present, Iván Zaera Avellón - izaera@gmail.com
+
+// This library is dually licensed under LGPL 3 and MPL 2.0. See file LICENSE for more information.
+
+// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
+// the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
+
+library cipher.block_cipher.modes.ctr;
+
+import "package:cipher/api.dart";
+import "package:cipher/adapters/stream_cipher_as_block_cipher.dart";
+import "package:cipher/stream/ctr.dart";
+import "package:cipher/src/registry/registry.dart";
+
+class CTRBlockCipher extends StreamCipherAsBlockCipher {
+
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.suffix("/CTR", (final String algorithmName, _) => () {
+        int sep = algorithmName.lastIndexOf("/");
+        BlockCipher underlying = new BlockCipher(algorithmName.substring(0, sep));
+        return new CTRBlockCipher(underlying.blockSize, new CTRStreamCipher(underlying));
+      });
+
+  CTRBlockCipher(int blockSize, StreamCipher underlyingCipher)
+      : super(blockSize, underlyingCipher);
+
+}

lib/modes/ecb.dart lib/block/modes/ecb.dart

@@ -5,16 +5,25 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.modes.ecb;
+library cipher.block_cipher.modes.ecb;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
+import "package:cipher/src/registry/registry.dart";
 import "package:cipher/src/impl/base_block_cipher.dart";
 
 /// Implementation of Electronic Code Book (ECB) mode on top of a [BlockCipher].
 class ECBBlockCipher extends BaseBlockCipher {
 
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.suffix("/ECB", (final String algorithmName, _) => () {
+        int sep = algorithmName.lastIndexOf("/");
+        BlockCipher underlying = new BlockCipher(algorithmName.substring(0, sep));
+        return new ECBBlockCipher(underlying);
+      });
+
   final BlockCipher _underlyingCipher;
 
   ECBBlockCipher(this._underlyingCipher);

lib/modes/gctr.dart lib/block/modes/gctr.dart

@@ -5,17 +5,26 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.modes.gctr;
+library cipher.block_cipher.modes.gctr;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
+import "package:cipher/src/registry/registry.dart";
 import "package:cipher/src/impl/base_block_cipher.dart";
 import "package:cipher/src/ufixnum.dart";
 
 /// Implementation of GOST 28147 OFB counter mode (GCTR) on top of a [BlockCipher].
 class GCTRBlockCipher extends BaseBlockCipher {
 
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.suffix("/GCTR", (final String algorithmName, _) => () {
+        int sep = algorithmName.lastIndexOf("/");
+        BlockCipher underlying = new BlockCipher(algorithmName.substring(0, sep));
+        return new GCTRBlockCipher(underlying);
+      });
+
   static const C1 = 16843012; //00000001000000010000000100000100
   static const C2 = 16843009; //00000001000000010000000100000001
 

lib/modes/ofb.dart lib/block/modes/ofb.dart

@@ -5,16 +5,25 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.modes.ofb;
+library cipher.block_cipher.modes.ofb;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
+import "package:cipher/src/registry/registry.dart";
 import "package:cipher/src/impl/base_block_cipher.dart";
 
 /// Implementation of Output FeedBack mode (OFB) on top of a [BlockCipher].
 class OFBBlockCipher extends BaseBlockCipher {
 
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.regex(r"^(.+)/OFB-([0-9]+)$", (_, final Match match) => () {
+        BlockCipher underlying = new BlockCipher(match.group(1));
+        int blockSize = int.parse(match.group(2));
+        return new OFBBlockCipher(underlying, blockSize);
+      });
+
   final int blockSize;
 
   final BlockCipher _underlyingCipher;

lib/block/modes/sic.dart

@@ -0,0 +1,28 @@
+// Copyright (c) 2013-present, Iván Zaera Avellón - izaera@gmail.com
+
+// This library is dually licensed under LGPL 3 and MPL 2.0. See file LICENSE for more information.
+
+// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
+// the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
+
+library cipher.block_cipher.modes.sic;
+
+import "package:cipher/api.dart";
+import "package:cipher/adapters/stream_cipher_as_block_cipher.dart";
+import "package:cipher/stream/sic.dart";
+import "package:cipher/src/registry/registry.dart";
+
+class SICBlockCipher extends StreamCipherAsBlockCipher {
+
+  /// Intended for internal use.
+  static final FactoryConfig FACTORY_CONFIG =
+      new DynamicFactoryConfig.suffix("/SIC", (final String algorithmName, _) => () {
+        int sep = algorithmName.lastIndexOf("/");
+        BlockCipher underlying = new BlockCipher(algorithmName.substring(0, sep));
+        return new SICBlockCipher(underlying.blockSize, new SICStreamCipher(underlying));
+      });
+
+  SICBlockCipher(int blockSize, StreamCipher underlyingCipher)
+    : super(blockSize, underlyingCipher);
+
+}

lib/digests/md2.dart

@@ -5,15 +5,19 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.digests.md2;
+library cipher.digest.md2;
 
 import "dart:typed_data";
 
 import "package:cipher/src/impl/base_digest.dart";
+import "package:cipher/src/registry/registry.dart";
 
 /// Implementation of MD2 as outlined in RFC1319 by B.Kaliski from RSA Laboratories April 1992
 class MD2Digest extends BaseDigest {
 
+  static final FactoryConfig FACTORY_CONFIG = new StaticFactoryConfig("MD2");
+  //TODO reindent
+
     static const _DIGEST_LENGTH = 16;
 
     /* X buffer */

lib/digests/md4.dart

@@ -5,18 +5,21 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.digests.md4;
+library cipher.digest.md4;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
 import "package:cipher/src/ufixnum.dart";
 import "package:cipher/src/impl/md4_family_digest.dart";
+import "package:cipher/src/registry/registry.dart";
 
 /// Implementation of MD4 digest
 class MD4Digest extends MD4FamilyDigest implements Digest {
 
-  static const _DIGEST_LENGTH = 16;
+  static final FactoryConfig FACTORY_CONFIG = new StaticFactoryConfig("MD4");
+
+    static const _DIGEST_LENGTH = 16;
 
   MD4Digest() :
     super(Endianness.LITTLE_ENDIAN, 4, 16);

lib/digests/md5.dart

@@ -5,17 +5,20 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.digests.md5;
+library cipher.digest.md5;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
 import "package:cipher/src/ufixnum.dart";
 import "package:cipher/src/impl/md4_family_digest.dart";
+import "package:cipher/src/registry/registry.dart";
 
 /// Implementation of MD5 digest
 class MD5Digest extends MD4FamilyDigest implements Digest {
 
+  static final FactoryConfig FACTORY_CONFIG = new StaticFactoryConfig("MD5");
+
   static const _DIGEST_LENGTH = 16;
 
   MD5Digest() :

lib/digests/ripemd128.dart

@@ -5,17 +5,20 @@
 // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 // the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.
 
-library cipher.digests.ripemd128;
+library cipher.digest.ripemd128;
 
 import "dart:typed_data";
 
 import "package:cipher/api.dart";
 import "package:cipher/src/ufixnum.dart";
 import "package:cipher/src/impl/md4_family_digest.dart";
+import "package:cipher/src/registry/registry.dart";
 
 /// Implementation of RIPEMD-128 digest
 class RIPEMD128Digest extends MD4FamilyDigest implements Digest {
 
+  static final FactoryConfig FACTORY_CONFIG = new StaticFactoryConfig("RIPEMD-128");
+
   static const _DIGEST_LENGTH = 16;
 
   RIPEMD128Digest() :