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74 lines
2.3 KiB
74 lines
2.3 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using System.Collections;
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using System.IO;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Math;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Tls
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{
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public abstract class TlsSrpUtilities
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{
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/// <exception cref="IOException"/>
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public static void AddSrpExtension(IDictionary extensions, byte[] identity)
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{
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extensions[ExtensionType.srp] = CreateSrpExtension(identity);
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}
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/// <exception cref="IOException"/>
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public static byte[] GetSrpExtension(IDictionary extensions)
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{
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byte[] extensionData = TlsUtilities.GetExtensionData(extensions, ExtensionType.srp);
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return extensionData == null ? null : ReadSrpExtension(extensionData);
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}
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/// <exception cref="IOException"/>
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public static byte[] CreateSrpExtension(byte[] identity)
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{
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if (identity == null)
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throw new TlsFatalAlert(AlertDescription.internal_error);
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return TlsUtilities.EncodeOpaque8(identity);
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}
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/// <exception cref="IOException"/>
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public static byte[] ReadSrpExtension(byte[] extensionData)
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{
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if (extensionData == null)
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throw new ArgumentNullException("extensionData");
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return TlsUtilities.DecodeOpaque8(extensionData, 1);
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}
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/// <exception cref="IOException"/>
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public static BigInteger ReadSrpParameter(Stream input)
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{
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return new BigInteger(1, TlsUtilities.ReadOpaque16(input, 1));
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}
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/// <exception cref="IOException"/>
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public static void WriteSrpParameter(BigInteger x, Stream output)
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{
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TlsUtilities.WriteOpaque16(BigIntegers.AsUnsignedByteArray(x), output);
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}
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public static bool IsSrpCipherSuite(int cipherSuite)
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{
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switch (TlsUtilities.GetKeyExchangeAlgorithm(cipherSuite))
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{
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case KeyExchangeAlgorithm.SRP:
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case KeyExchangeAlgorithm.SRP_DSS:
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case KeyExchangeAlgorithm.SRP_RSA:
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return true;
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default:
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return false;
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}
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}
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}
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}
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#pragma warning restore
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#endif
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