- Initial commit

Runtime/3rdParty/BouncyCastle/crypto/util/CipherKeyGeneratorFactory.cs

@@ -0,0 +1,95 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1.Kisa;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1.Nist;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1.Ntt;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1.Oiw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1.Pkcs;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Generators;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities
+{
+    public static class CipherKeyGeneratorFactory
+    {
+        /**
+         * Create a key generator for the passed in Object Identifier.
+         *
+         * @param algorithm the Object Identifier indicating the algorithn the generator is for.
+         * @param random a source of random to initialise the generator with.
+         * @return an initialised CipherKeyGenerator.
+         * @throws IllegalArgumentException if the algorithm cannot be identified.
+         */
+        public static CipherKeyGenerator CreateKeyGenerator(DerObjectIdentifier algorithm, SecureRandom random)
+        {
+            if (NistObjectIdentifiers.IdAes128Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 128);
+            }
+            else if (NistObjectIdentifiers.IdAes192Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 192);
+            }
+            else if (NistObjectIdentifiers.IdAes256Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 256);
+            }
+            else if (PkcsObjectIdentifiers.DesEde3Cbc.Equals(algorithm))
+            {
+                DesEdeKeyGenerator keyGen = new DesEdeKeyGenerator();
+                keyGen.Init(new KeyGenerationParameters(random, 192));
+                return keyGen;
+            }
+            else if (NttObjectIdentifiers.IdCamellia128Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 128);
+            }
+            else if (NttObjectIdentifiers.IdCamellia192Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 192);
+            }
+            else if (NttObjectIdentifiers.IdCamellia256Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 256);
+            }
+            else if (KisaObjectIdentifiers.IdSeedCbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 128);
+            }
+            else if (AlgorithmIdentifierFactory.CAST5_CBC.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 128);
+            }
+            else if (OiwObjectIdentifiers.DesCbc.Equals(algorithm))
+            {
+                DesKeyGenerator keyGen = new DesKeyGenerator();
+                keyGen.Init(new KeyGenerationParameters(random, 64));
+                return keyGen;
+            }
+            else if (PkcsObjectIdentifiers.rc4.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 128);
+            }
+            else if (PkcsObjectIdentifiers.RC2Cbc.Equals(algorithm))
+            {
+                return CreateCipherKeyGenerator(random, 128);
+            }
+            else
+            {
+                throw new InvalidOperationException("cannot recognise cipher: " + algorithm);
+            }
+        }
+
+        private static CipherKeyGenerator CreateCipherKeyGenerator(SecureRandom random, int keySize)
+        {
+            CipherKeyGenerator keyGen = new CipherKeyGenerator();
+            keyGen.Init(new KeyGenerationParameters(random, keySize));
+            return keyGen;
+        }
+    }
+}
+#pragma warning restore
+#endif