- Initial commit

2026-07-03 05:02:26 +03:00
commit 374ff1e689
4080 changed files with 388870 additions and 0 deletions
--- a/Runtime/3rdParty/BouncyCastle/crypto/agreement/kdf/ECDHKekGenerator.cs
+++ b/Runtime/3rdParty/BouncyCastle/crypto/agreement/kdf/ECDHKekGenerator.cs
@ -0,0 +1,77 @@
+#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.X509;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Generators;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Agreement.Kdf
+{
+    /**
+    * X9.63 based key derivation function for ECDH CMS.
+    */
+    public sealed class ECDHKekGenerator
+        : IDerivationFunction
+    {
+        private readonly IDerivationFunction m_kdf;
+
+        private DerObjectIdentifier	algorithm;
+        private int					keySize;
+        private byte[]				z;
+
+        public ECDHKekGenerator(IDigest digest)
+        {
+            m_kdf = new Kdf2BytesGenerator(digest);
+        }
+
+        public void Init(IDerivationParameters param)
+        {
+            DHKdfParameters parameters = (DHKdfParameters)param;
+
+            this.algorithm = parameters.Algorithm;
+            this.keySize = parameters.KeySize;
+            this.z = parameters.GetZ(); // TODO Clone?
+        }
+
+        public IDigest Digest => m_kdf.Digest;
+
+        public int GenerateBytes(byte[]	outBytes, int outOff, int length)
+        {
+            Check.OutputLength(outBytes, outOff, length, "output buffer too small");
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+            return GenerateBytes(outBytes.AsSpan(outOff, length));
+#else
+            // TODO Create an ASN.1 class for this (RFC3278)
+            // ECC-CMS-SharedInfo
+            DerSequence s = new DerSequence(
+                new AlgorithmIdentifier(algorithm, DerNull.Instance),
+                new DerTaggedObject(true, 2, new DerOctetString(Pack.UInt32_To_BE((uint)keySize))));
+
+            m_kdf.Init(new KdfParameters(z, s.GetDerEncoded()));
+
+            return m_kdf.GenerateBytes(outBytes, outOff, length);
+#endif
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public int GenerateBytes(Span<byte> output)
+        {
+            // TODO Create an ASN.1 class for this (RFC3278)
+            // ECC-CMS-SharedInfo
+            DerSequence s = new DerSequence(
+                new AlgorithmIdentifier(algorithm, DerNull.Instance),
+                new DerTaggedObject(true, 2, new DerOctetString(Pack.UInt32_To_BE((uint)keySize))));
+
+            m_kdf.Init(new KdfParameters(z, s.GetDerEncoded()));
+
+            return m_kdf.GenerateBytes(output);
+        }
+#endif
+    }
+}
+#pragma warning restore
+#endif