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+/*
+ * Copyright 2018 The WebRTC Project Authors. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef API_CRYPTO_CRYPTO_OPTIONS_H_
+#define API_CRYPTO_CRYPTO_OPTIONS_H_
+
+#include <vector>
+
+#include "rtc_base/system/rtc_export.h"
+
+namespace webrtc {
+
+// CryptoOptions defines advanced cryptographic settings for native WebRTC.
+// These settings must be passed into PeerConnectionFactoryInterface::Options
+// and are only applicable to native use cases of WebRTC.
+struct RTC_EXPORT CryptoOptions {
+ CryptoOptions();
+ CryptoOptions(const CryptoOptions& other);
+ ~CryptoOptions();
+
+ // Helper method to return an instance of the CryptoOptions with GCM crypto
+ // suites disabled. This method should be used instead of depending on current
+ // default values set by the constructor.
+ static CryptoOptions NoGcm();
+
+ // Returns a list of the supported DTLS-SRTP Crypto suites based on this set
+ // of crypto options.
+ std::vector<int> GetSupportedDtlsSrtpCryptoSuites() const;
+
+ bool operator==(const CryptoOptions& other) const;
+ bool operator!=(const CryptoOptions& other) const;
+
+ // SRTP Related Peer Connection options.
+ struct Srtp {
+ // Enable GCM crypto suites from RFC 7714 for SRTP. GCM will only be used
+ // if both sides enable it.
+ bool enable_gcm_crypto_suites = false;
+
+ // If set to true, the (potentially insecure) crypto cipher
+ // kSrtpAes128CmSha1_32 will be included in the list of supported ciphers
+ // during negotiation. It will only be used if both peers support it and no
+ // other ciphers get preferred.
+ bool enable_aes128_sha1_32_crypto_cipher = false;
+
+ // The most commonly used cipher. Can be disabled, mostly for testing
+ // purposes.
+ bool enable_aes128_sha1_80_crypto_cipher = true;
+
+ // If set to true, encrypted RTP header extensions as defined in RFC 6904
+ // will be negotiated. They will only be used if both peers support them.
+ bool enable_encrypted_rtp_header_extensions = false;
+ } srtp;
+
+ // Options to be used when the FrameEncryptor / FrameDecryptor APIs are used.
+ struct SFrame {
+ // If set all RtpSenders must have an FrameEncryptor attached to them before
+ // they are allowed to send packets. All RtpReceivers must have a
+ // FrameDecryptor attached to them before they are able to receive packets.
+ bool require_frame_encryption = false;
+ } sframe;
+};
+
+} // namespace webrtc
+
+#endif // API_CRYPTO_CRYPTO_OPTIONS_H_