98 lines
3.5 KiB
C#
98 lines
3.5 KiB
C#
#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 BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Agreement;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Tls
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{
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public class PskTlsServer
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: AbstractTlsServer
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{
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protected TlsPskIdentityManager mPskIdentityManager;
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public PskTlsServer(TlsPskIdentityManager pskIdentityManager)
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: this(new DefaultTlsCipherFactory(), pskIdentityManager)
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{
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}
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public PskTlsServer(TlsCipherFactory cipherFactory, TlsPskIdentityManager pskIdentityManager)
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: base(cipherFactory)
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{
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this.mPskIdentityManager = pskIdentityManager;
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}
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protected virtual TlsEncryptionCredentials GetRsaEncryptionCredentials()
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{
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throw new TlsFatalAlert(AlertDescription.internal_error);
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}
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protected virtual DHParameters GetDHParameters()
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{
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return DHStandardGroups.rfc7919_ffdhe2048;
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}
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protected override int[] GetCipherSuites()
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{
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return new int[]
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{
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CipherSuite.TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
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CipherSuite.TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA,
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CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
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CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA
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};
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}
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public override TlsCredentials GetCredentials()
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{
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int keyExchangeAlgorithm = TlsUtilities.GetKeyExchangeAlgorithm(mSelectedCipherSuite);
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switch (keyExchangeAlgorithm)
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{
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case KeyExchangeAlgorithm.DHE_PSK:
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case KeyExchangeAlgorithm.ECDHE_PSK:
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case KeyExchangeAlgorithm.PSK:
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return null;
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case KeyExchangeAlgorithm.RSA_PSK:
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return GetRsaEncryptionCredentials();
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default:
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/* Note: internal error here; selected a key exchange we don't implement! */
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throw new TlsFatalAlert(AlertDescription.internal_error);
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}
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}
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public override TlsKeyExchange GetKeyExchange()
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{
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int keyExchangeAlgorithm = TlsUtilities.GetKeyExchangeAlgorithm(mSelectedCipherSuite);
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switch (keyExchangeAlgorithm)
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{
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case KeyExchangeAlgorithm.DHE_PSK:
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case KeyExchangeAlgorithm.ECDHE_PSK:
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case KeyExchangeAlgorithm.PSK:
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case KeyExchangeAlgorithm.RSA_PSK:
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return CreatePskKeyExchange(keyExchangeAlgorithm);
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default:
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/*
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* Note: internal error here; the TlsProtocol implementation verifies that the
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* server-selected cipher suite was in the list of client-offered cipher suites, so if
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* we now can't produce an implementation, we shouldn't have offered it!
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*/
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throw new TlsFatalAlert(AlertDescription.internal_error);
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}
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}
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protected virtual TlsKeyExchange CreatePskKeyExchange(int keyExchange)
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{
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return new TlsPskKeyExchange(keyExchange, mSupportedSignatureAlgorithms, null, mPskIdentityManager,
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null, GetDHParameters(), mNamedCurves, mClientECPointFormats, mServerECPointFormats);
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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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