QUIC Working GroupM. Thomson, Editor
Intended status: Standards TrackS. Turner, Editor
Expires: April 16, 2018sn3rd
October 13, 2017

top online dating pick up lines Using Transport Layer Security (TLS) to Secure QUIC


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single american ladies in the uk This document describes how Transport Layer Security (TLS) is used to secure QUIC.play anime sim dating games

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alternative partnervermittlung polen This document describes how QUIC [QUIC-TRANSPORT] is secured using Transport Layer Security (TLS) version 1.3 [I-D.ietf-tls-tls13]. TLS 1.3 provides critical latency improvements for connection establishment over previous versions. Absent packet loss, most new connections can be established and secured within a single round trip; on subsequent connections between the same client and server, the client can often send application data immediately, that is, using a zero round trip setup.singlebörsen die wirklich kostenlos sind

polnische single männer in deutschland This document describes how the standardized TLS 1.3 acts a security component of QUIC. The same design could work for TLS 1.2, though few of the benefits QUIC provides would be realized due to the handshake latency in versions of TLS prior to 1.3.gibt es singlebörsen die komplett kostenlos sind

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single polen in deutschland The words “MUST”, “MUST NOT”, “SHOULD”, and “MAY” are used in this document. It’s not shouting; when they are capitalized, they have the special meaning defined in [RFC2119].hot sim dating games online

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partnerhoroskop kostenlos 2014 TLS terminology is used when referring to parts of TLS. Though TLS assumes a continuous stream of octets, it divides that stream into records. Most relevant to QUIC are the records that contain TLS handshake messages, which are discrete messages that are used for key agreement, authentication and parameter negotiation. Ordinarily, TLS records can also contain application data, though in the QUIC usage there is no use of TLS application data.play online sims dating games free

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partnerhoroskop kostenlos wer passt zu wem QUIC [QUIC-TRANSPORT] assumes responsibility for the confidentiality and integrity protection of packets. For this it uses keys derived from a TLS 1.3 connection [I-D.ietf-tls-tls13]; QUIC also relies on TLS 1.3 for authentication and negotiation of parameters that are critical to security and performance.singles app for android

jahreshoroskop 2013 kostenlos Rather than a strict layering, these two protocols are co-dependent: QUIC uses the TLS handshake; TLS uses the reliability and ordered delivery provided by QUIC streams.top 100 single charts deutschland 1989

gratis partnersuche steiermark This document defines how QUIC interacts with TLS. This includes a description of how TLS is used, how keying material is derived from TLS, and the application of that keying material to protect QUIC packets. fitness singles deutschland shows the basic interactions between TLS and QUIC, with the QUIC packet protection being called out specially.partnerbörse gratis schweiz

+------------+                        +------------+
|            |------ Handshake ------>|            |
|            |<-- Validate Address ---|            |
|            |-- OK/Error/Validate -->|            |
|            |<----- Handshake -------|            |
|   QUIC     |------ Validate ------->|    TLS     |
|            |                        |            |
|            |<------ 0-RTT OK -------|            |
|            |<------ 1-RTT OK -------|            |
|            |<--- Handshake Done ----|            |
+------------+                        +------------+
 |         ^                               ^ |
 | Protect | Protected                     | |
 v         | Packet                        | |
+------------+                             / /
|   QUIC     |                            / /
|  Packet    |-------- Get Secret -------' /
| Protection |<-------- Secret -----------'

partnervermittlung marina lachen Figure 1: QUIC and TLS Interactions

singlebörsen für mollige kostenlos The initial state of a QUIC connection has packets exchanged without any form of protection. In this state, QUIC is limited to using stream 0 and associated packets. Stream 0 is reserved for a TLS connection. This is a complete TLS connection as it would appear when layered over TCP; the only difference is that QUIC provides the reliability and ordering that would otherwise be provided by TCP.gratis partnerbörse südtirol

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single charts juli 2014 The TLS authenticated key exchange occurs between two entities: client and server. The client initiates the exchange and the server responds. If the key exchange completes successfully, both client and server will agree on a secret. TLS supports both pre-shared key (PSK) and Diffie-Hellman (DH) key exchanges. PSK is the basis for 0-RTT; the latter provides perfect forward secrecy (PFS) when the DH keys are destroyed.nummer 1 deutsche single charts rolling stones

online dating in ontario canada After completing the TLS handshake, the client will have learned and authenticated an identity for the server and the server is optionally able to learn and authenticate an identity for the client. TLS supports X.509 [RFC5280] certificate-based authentication for both server and client.german charts single top 100

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  • A full 1-RTT handshake in which the client is able to send application data after one round trip and the server immediately responds after receiving the first handshake message from the client.
  • A 0-RTT handshake in which the client uses information it has previously learned about the server to send application data immediately. This application data can be replayed by an attacker so it MUST NOT carry a self-contained trigger for any non-idempotent action.

www.singlebörsen kostenlos.de A simplified TLS 1.3 handshake with 0-RTT application data is shown in german top 100 single charts januar 2011, see [I-D.ietf-tls-tls13] for more options and details.viva top 100 single charts 2011

    Client                                             Server

   (0-RTT Application Data)  -------->
                             <--------      [Application Data]
   {Finished}                -------->

   [Application Data]        <------->      [Application Data]

single holiday south africa Figure 2: TLS Handshake with 0-RTT

anzahl singles in deutschland 2013 This 0-RTT handshake is only possible if the client and server have previously communicated. In the 1-RTT handshake, the client is unable to send protected application data until it has received all of the handshake messages sent by the server.german top 100 single charts 2011

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  • The server can respond to a ClientHello with a HelloRetryRequest, which adds an additional round trip prior to the basic exchange. This is needed if the server wishes to request a different key exchange key from the client. HelloRetryRequest is also used to verify that the client is correctly able to receive packets on the address it claims to have (see [QUIC-TRANSPORT]).
  • A pre-shared key mode can be used for subsequent handshakes to reduce the number of public key operations. This is the basis for 0-RTT data, even if the remainder of the connection is protected by a new Diffie-Hellman exchange.

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partnersuche paderborn youtube QUIC reserves stream 0 for a TLS connection. Stream 0 contains a complete TLS connection, which includes the TLS record layer. Other than the definition of a QUIC-specific extension (see german single charts oktober 2013), TLS is unmodified for this use. This means that TLS will apply confidentiality and integrity protection to its records. In particular, TLS record protection is what provides confidentiality protection for the TLS handshake messages sent by the server.single dating site in germany

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    Client                                             Server

@C QUIC STREAM Frame(s) <0>:
       + QUIC Extension
                        0-RTT Key => @0

@0 QUIC STREAM Frame(s) <any stream>:
   Replayable QUIC Frames

                                      QUIC STREAM Frame <0>: @C
                                  {TLS Handshake Messages}
                        1-RTT Key => @1

                                           QUIC Frames <any> @1
@C QUIC STREAM Frame(s) <0>:

@1 QUIC Frames <any>        <------->      QUIC Frames <any> @1

wo leben die meisten singles in deutschland Figure 3: QUIC over TLS Handshake

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  • ”<” and “>” enclose stream numbers.
  • ”@” indicates the keys that are used for protecting the QUIC packet (C = cleartext, with integrity only; 0 = 0-RTT keys; 1 = 1-RTT keys).
  • ”(“ and “)” enclose messages that are protected with TLS 0-RTT handshake or application keys.
  • ”{“ and “}” enclose messages that are protected by the TLS Handshake keys.

american dating in dubai If 0-RTT is not attempted, then the client does not send packets protected by the 0-RTT key (@0). In that case, the only key transition on the client is from cleartext packets (@C) to 1-RTT protection (@1), which happens after it sends its final set of TLS handshake messages.gratis partnerbörse graz

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die erfolgreichsten singles aller zeiten in deutschland The client transitions from cleartext (@C) to 0-RTT keys (@0) when sending 0-RTT data, and subsequently to to 1-RTT keys (@1) after its second flight of TLS handshake messages. This creates the potential for unprotected packets to be received by a server in close proximity to packets that are protected with 1-RTT keys.single charts kw 19 2014

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russische frauen in deutschland heiraten A QUIC client starts TLS by requesting TLS handshake octets from TLS. The client acquires handshake octets before sending its first packet.queen nr. 1 hits deutschland single charts

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russische frauen in deutschland daten Each time that an endpoint receives data on stream 0, it delivers the octets to TLS if it is able. Each time that TLS is provided with new data, new handshake octets are requested from TLS. TLS might not provide any octets if the handshake messages it has received are incomplete or it has no data to send.anime sim dating games free

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www.partnersuche für senioren.de Once the handshake is complete, TLS becomes passive. TLS can still receive data from its peer and respond in kind, but it will not need to send more data unless specifically requested - either by an application or QUIC. One reason to send data is that the server might wish to provide additional or updated session tickets to a client.anime sim dating game free

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Until the handshake is reported as complete, the connection and key exchange are not properly authenticated at the server. Even though 1-RTT keys are available to a server after receiving the first handshake messages from a client, the server cannot consider the client to be authenticated until it receives and validates the client’s Finished message.
The requirement for the server to wait for the client Finished message creates a dependency on that message being delivered. A client can avoid the potential for head-of-line blocking that this implies by sending a copy of the STREAM frame that carries the Finished message in multiple packets. This enables immediate server processing for those packets.

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  • proceed with the connection,
  • ask for client address validation, or
  • abort the connection.

koreanische singles in deutschland If QUIC requests source address validation, it also provides a new address validation token. TLS includes that along with any information it requires in the cookie extension of a TLS HelloRetryRequest message. In the other cases, the connection either proceeds or terminates with a handshake error.single charts mai 2013 deutschland

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south american online dating If 0-RTT is possible, it is ready after the client sends a TLS ClientHello message or the server receives that message. After providing a QUIC client with the first handshake octets, the TLS stack might signal that 0-RTT keys are ready. On the server, after receiving handshake octets that contain a ClientHello message, a TLS server might signal that 0-RTT keys are available.play anime dating simulation games

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Client                                                    Server

Get Handshake
0-RTT Key Ready
                      --- send/receive --->
                                              Handshake Received
                                                 0-RTT Key Ready
                                                   Get Handshake
                                                1-RTT Keys Ready
                     <--- send/receive ---
Handshake Received
Get Handshake
Handshake Complete
1-RTT Keys Ready
                      --- send/receive --->
                                              Handshake Received
                                                   Get Handshake
                                              Handshake Complete
                     <--- send/receive ---
Handshake Received
Get Handshake

erfolgreichste single der 80er in deutschland Figure 4: Interaction Summary between QUIC and TLS

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erfolgreichste single aller zeiten deutschland The TLS implementation does not need to ensure that the ClientHello is sufficiently large. QUIC PADDING frames are added to increase the size of the packet as necessary.sehr viele singles in deutschland

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german top 100 single charts 2009 tracklist QUIC uses a system of packet protection secrets, keys and IVs that are modelled on the system used in TLS [I-D.ietf-tls-tls13]. The secrets that QUIC uses as the basis of its key schedule are obtained using TLS exporters (see brasilianische singles in deutschland of [I-D.ietf-tls-tls13]).künstliche befruchtung für singles in deutschland

top 100 single charts august 2009 QUIC uses HKDF with the same hash function negotiated by TLS for key derivation. For example, if TLS is using the TLS_AES_128_GCM_SHA256, the SHA-256 hash function is used.britische singles in deutschland

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top 100 single charts juli 2009 Cleartext packets are protected with secrets derived from the client’s connection ID. Specifically:bulgarische singles in deutschland

   quic_version_1_salt = afc824ec5fc77eca1e9d36f37fb2d46518c36639

   cleartext_secret = HKDF-Extract(quic_version_1_salt,

   client_cleartext_secret =
                                        "QUIC client cleartext Secret",
                                        "", Hash.length)
   server_cleartext_secret =
                                        "QUIC server cleartext Secret",
                                        "", Hash.length)

top 100 single charts juni 2009 The HKDF for the cleartext packet protection keys uses the SHA-256 hash function [FIPS180].gratis partnerbörsen in österreich

top 100 single charts september 2009 The salt value is a 20 octet sequence shown in the figure in hexadecimal notation. Future versions of QUIC SHOULD generate a new salt value, thus ensuring that the keys are different for each version of QUIC. This prevents a middlebox that only recognizes one version of QUIC from seeing or modifying the contents of cleartext packets from future versions.youtube top 100 single charts germany

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partnersuche über 50 test The secret is exported from TLS using the exporter label “EXPORTER-QUIC 0-RTT Secret” and an empty context. The size of the secret MUST be the size of the hash output for the PRF hash function negotiated by TLS. This uses the TLS early_exporter_secret. The QUIC 0-RTT secret is only used for protection of packets sent by the client.partnervermittlung antoinette xvi

       = TLS-Exporter("EXPORTER-QUIC 0-RTT Secret"
                      "", Hash.length)

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singles mit niveau kostenlos runterladen 1-RTT keys are used by both client and server after the TLS handshake completes. There are two secrets used at any time: one is used to derive packet protection keys for packets sent by the client, the other for packet protection keys on packets sent by the server.singlebörsen kostenlos ohne anmelden

wie viele singles gibts in deutschland The initial client packet protection secret is exported from TLS using the exporter label “EXPORTER-QUIC client 1-RTT Secret”; the initial server packet protection secret uses the exporter label “EXPORTER-QUIC server 1-RTT Secret”. Both exporters use an empty context. The size of the secret MUST be the size of the hash output for the PRF hash function negotiated by TLS.partnersuche ab 50 kostenlos

       = TLS-Exporter("EXPORTER-QUIC client 1-RTT Secret"
                      "", Hash.length)
       = TLS-Exporter("EXPORTER-QUIC server 1-RTT Secret"
                      "", Hash.length)

partnersuche magdeburg umgebung sehenswürdigkeiten These secrets are used to derive the initial client and server packet protection keys.partnersuche ab 50

best pickup line for online dating After a key update (see partnersuche ab 50 berlin), these secrets are updated using the HKDF-Expand-Label function defined in partnersuche ab 50 jahren of [I-D.ietf-tls-tls13]. HKDF-Expand-Label uses the PRF hash function negotiated by TLS. The replacement secret is derived using the existing Secret, a Label of “QUIC client 1-RTT Secret” for the client and “QUIC server 1-RTT Secret” for the server, an empty HashValue, and the same output Length as the hash function selected by TLS for its PRF.partnersuche ab 50 schweiz

       = HKDF-Expand-Label(client_pp_secret_<N>,
                           "QUIC client 1-RTT Secret",
                           "", Hash.length)
       = HKDF-Expand-Label(server_pp_secret_<N>,
                           "QUIC server 1-RTT Secret",
                           "", Hash.length)

deutsch single charts mai 2014 This allows for a succession of new secrets to be created as needed.help me write a good online dating profile

partnersuche senioren hannover HKDF-Expand-Label uses HKDF-Expand [RFC5869] with a specially formatted info parameter, as shown:us singles in deutschland

    HKDF-Expand-Label(Secret, Label, HashValue, Length) =
         HKDF-Expand(Secret, HkdfLabel, Length)

    Where HkdfLabel is specified as:

    struct {
        uint16 length = Length;
        opaque label<10..255> = "tls13 " + Label;
        uint8 hashLength;     // Always 0
    } HkdfLabel;

top 100 single charts 2014 youtube For example, the client packet protection secret uses an info parameter of:fkk urlaub für singles in deutschland

   info = (HashLen / 256) || (HashLen % 256) || 0x1f ||
          "tls13 QUIC client 1-RTT secret" || 0x00

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top 100 single charts liste The complete key expansion uses an identical process for key expansion as defined in us military singles in deutschland of [I-D.ietf-tls-tls13], using different values for the input secret. QUIC uses the AEAD function negotiated by TLS.ungarische singles in deutschland

single charts top 100 januar 2013 The packet protection key and IV used to protect the 0-RTT packets sent by a client are derived from the QUIC 0-RTT secret. The packet protection keys and IVs for 1-RTT packets sent by the client and server are derived from the current generation of client_pp_secret and server_pp_secret respectively. The length of the output is determined by the requirements of the AEAD function selected by TLS. The key length is the AEAD key size. As defined in wo machen singles in deutschland urlaub of [I-D.ietf-tls-tls13], the IV length is the larger of 8 or N_MIN (see dating sim games for guys on ipad of [RFC5116]). For any secret S, the corresponding key and IV are derived as shown below:dating sim games for guys on android

   key = HKDF-Expand-Label(S, "key", "", key_length)
   iv  = HKDF-Expand-Label(S, "iv", "", iv_length)

top single charts 2013 liste The QUIC record protection initially starts without keying material. When the TLS state machine reports that the ClientHello has been sent, the 0-RTT keys can be generated and installed for writing. When the TLS state machine reports completion of the handshake, the 1-RTT keys can be generated and installed for writing.singlebörsen kostenlos finya

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single charts top 100 märz 2013 The Authentication Encryption with Associated Data (AEAD) [RFC5116] function used for QUIC packet protection is AEAD that is negotiated for use with the TLS connection. For example, if TLS is using the TLS_AES_128_GCM_SHA256, the AEAD_AES_128_GCM function is used.singlebörsen kostenlos für mollige

single charts 2013 top 10 All QUIC packets other than Version Negotiation and Stateless Reset packets are protected with an AEAD algorithm [RFC5116]. Cleartext packets are protected with AEAD_AES_128_GCM and a key derived from the client’s connection ID (see partnervermittlung antoinette uhr). This provides protection against off-path attackers and robustness against QUIC version unaware middleboxes, but not against on-path attackers.american singles in germany neuer

single charts top 100 april 2013 Once TLS has provided a key, the contents of regular QUIC packets immediately after any TLS messages have been sent are protected by the AEAD selected by TLS.america online dating sites

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single charts 2013 top 100 The nonce, N, is formed by combining the packet protection IV (either client_pp_iv_n or server_pp_iv_n) with the packet number. The 64 bits of the reconstructed QUIC packet number in network byte order is left-padded with zeros to the size of the IV. The exclusive OR of the padded packet number and the IV forms the AEAD nonce.meistverkaufte single deutschland 2013

single charts top 100 mai 2013 The associated data, A, for the AEAD is the contents of the QUIC header, starting from the flags octet in either the short or long header.beatles german singles

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wo gibt es die meisten singles in deutschland Prior to TLS providing keys, no record protection is performed and the plaintext, P, is transmitted unmodified.american singles in australia

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top 50 single charts april 2015 QUIC has a single, contiguous packet number space. In comparison, TLS restarts its sequence number each time that record protection keys are changed. The sequence number restart in TLS ensures that a compromise of the current traffic keys does not allow an attacker to truncate the data that is sent after a key update by sending additional packets under the old key (causing new packets to be discarded).singlebörse für akademiker

speed dating film deutschland QUIC does not assume a reliable transport and is required to handle attacks where packets are dropped in other ways. QUIC is therefore not affected by this form of truncation.singles in deutschland youtube

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filipino online dating sites Some AEAD functions have limits for how many packets can be encrypted under the same key and IV (see for example [AEBounds]). This might be lower than the packet number limit. An endpoint MUST initiate a key update (partnervermittlung antoinette zitate) prior to exceeding any limit set for the AEAD that is in use.singles chat kostenlos xp

best filipino online dating sites TLS maintains a separate sequence number that is used for record protection on the connection that is hosted on stream 0. This sequence number is not visible to QUIC.durchschnittseinkommen deutschland single haushalt

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mtv top 100 single charts usa Once an endpoint successfully receives a packet with a given packet number, it MUST discard all packets with higher packet numbers if they cannot be successfully unprotected with either the same key, or - if there is a key update - the next packet protection key (see free online america dating site). Similarly, a packet that appears to trigger a key update, but cannot be unprotected successfully MUST be discarded.free online dating south america

german top 100 single charts 2010 liste Failure to unprotect a packet does not necessarily indicate the existence of a protocol error in a peer or an attack. The truncated packet number encoding used in QUIC can cause packet numbers to be decoded incorrectly if they are delayed significantly.best online married dating sites

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top 100 single charts 2010 liste single white south african man of [QUIC-TRANSPORT] also requires a secret to compute packet number gaps on connection ID transitions. That secret is computed as:south african single man online

          = TLS-Exporter("EXPORTER-QUIC Packet Number Secret"
                         "", Hash.length)

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top 100 single charts deutschland 2010 As TLS reports the availability of 0-RTT and 1-RTT keys, new keying material can be exported from TLS and used for QUIC packet protection. At each transition during the handshake a new secret is exported from TLS and packet protection keys are derived from that secret.statistik singles deutschland 2013

tanzschule single frankfurt Every time that a new set of keys is used for protecting outbound packets, the KEY_PHASE bit in the public flags is toggled. 0-RTT protected packets use the QUIC long header, they do not use the KEY_PHASE bit to select the correct keys (see play free sim dating rpg games).partnersuche raum würzburg

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deutsche single charts top 100 media control Transitions between keys during the handshake are complicated by the need to ensure that TLS handshake messages are sent with the correct packet protection.mazedonische singles in deutschland

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single charts märz 1974 The initial exchange of packets are sent using a cleartext packet type and AEAD-protected using the cleartext key generated as described in partnersuche raum hildesheim. All TLS handshake messages up to the TLS Finished message sent by either endpoint use cleartext packets.griechische singles in deutschland

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top 100 single charts 2015 märz Once the TLS handshake is complete, keying material is exported from TLS and used to protect QUIC packets.die meisten singles in deutschland

partnersuche magdeburg umgebung heute Packets protected with 1-RTT keys initially have a KEY_PHASE bit set to 0. This bit inverts with each subsequent key update (see statistik der singles in deutschland).anzahl der singles in deutschland

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top 100 single charts oktober 2012 A server might choose to retain 0-RTT packets that arrive before a TLS ClientHello. The server can then use those packets once the ClientHello arrives. However, the potential for denial of service from buffering 0-RTT packets is significant. These packets cannot be authenticated and so might be employed by an attacker to exhaust server resources. Limiting the number of packets that are saved might be necessary.american singles in berlin

top 100 single charts dezember 2012 The server transitions to using 1-RTT keys after sending its first flight of TLS handshake messages, ending in the Finished. From this point, the server protects all packets with 1-RTT keys. Future packets are therefore protected with 1-RTT keys. Initially, these are marked with a KEY_PHASE of 0.american singles in bahrain

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top 100 single charts 2015 cannapower TLS handshake messages from both client and server are critical to the key exchange. The contents of these messages determines the keys used to protect later messages. If these handshake messages are included in packets that are protected with these keys, they will be indecipherable to the recipient.american singles in uk

top 100 single charts 2015 Even though newer keys could be available when retransmitting, retransmissions of these handshake messages MUST be sent in cleartext packets. An endpoint MUST generate ACK frames for these messages and send them in cleartext packets.englische singles in deutschland

online sim dating games anime A HelloRetryRequest handshake message might be used to reject an initial ClientHello. A HelloRetryRequest handshake message is sent in a Server Stateless Retry packet; any second ClientHello that is sent in response uses a Client Initial packet type. Neither packet is protected. This is natural, because no new keying material will be available when these messages need to be sent. Upon receipt of a HelloRetryRequest, a client SHOULD cease any transmission of 0-RTT data; 0-RTT data will only be discarded by any server that sends a HelloRetryRequest.erfolgreichste singles in deutschland

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best online sim dating games Once 1-RTT keys are available to an endpoint, it no longer needs the TLS handshake messages that are carried in unprotected packets. However, a server might need to retransmit its TLS handshake messages in response to receiving an unprotected packet that contains ACK frames. A server MUST process ACK frames in unprotected packets until the TLS handshake is reported as complete, or it receives an ACK frame in a protected packet that acknowledges all of its handshake messages.weihnachten für singles in deutschland

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funny chat up lines for online dating Once the TLS handshake is complete, the KEY_PHASE bit allows for refreshes of keying material by either peer. Endpoints start using updated keys immediately without additional signaling; the change in the KEY_PHASE bit indicates that a new key is in use.american singles in germany ist

german top 100 single charts oktober 2013 An endpoint MUST NOT initiate more than one key update at a time. A new key cannot be used until the endpoint has received and successfully decrypted a packet with a matching KEY_PHASE. Note that when 0-RTT is attempted the value of the KEY_PHASE bit will be different on packets sent by either peer.play anime dating sim games

senioren partnersuche vergleich A receiving endpoint detects an update when the KEY_PHASE bit doesn’t match what it is expecting. It creates a new secret (see american dating a german girl) and the corresponding read key and IV. If the packet can be decrypted and authenticated using these values, then the keys it uses for packet protection are also updated. The next packet sent by the endpoint will then use the new keys.german single charts januar 2015

wieviel single männer in deutschland An endpoint doesn’t need to send packets immediately when it detects that its peer has updated keys. The next packet that it sends will simply use the new keys. If an endpoint detects a second update before it has sent any packets with updated keys it indicates that its peer has updated keys twice without awaiting a reciprocal update. An endpoint MUST treat consecutive key updates as a fatal error and abort the connection.deutschland single charts mai 2014

single charts januar 1984 deutschland An endpoint SHOULD retain old keys for a short period to allow it to decrypt packets with smaller packet numbers than the packet that triggered the key update. This allows an endpoint to consume packets that are reordered around the transition between keys. Packets with higher packet numbers always use the updated keys and MUST NOT be decrypted with old keys.online girl dating simulation games

american dating in paris Keys and their corresponding secrets SHOULD be discarded when an endpoint has received all packets with sequence numbers lower than the lowest sequence number used for the new key. An endpoint might discard keys if it determines that the length of the delay to affected packets is excessive.german top 100 single charts 2014 youtube

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   Initiating Peer                    Responding Peer

@M QUIC Frames
               New Keys -> @N
@N QUIC Frames
                                          QUIC Frames @M
                          New Keys -> @N
                                          QUIC Frames @N

dating sim game for boy Figure 5: Key Update

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partnersuche magdeburg umgebung quedlinburg A server cannot initiate a key update until it has received the client’s Finished message. Otherwise, packets protected by the updated keys could be confused for retransmissions of handshake messages. A client cannot initiate a key update until all of its handshake messages have been acknowledged by the server.german top 100 single charts januar 2013

partnersuche magdeburg umgebung quito A packet that triggers a key update could arrive after successfully processing a packet with a higher packet number. This is only possible if there is a key compromise and an attack, or if the peer is incorrectly reverting to use of old keys. Because the latter cannot be differentiated from an attack, an endpoint MUST immediately terminate the connection if it detects this condition.american singles in wiesbaden

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dating sim games kostenlos Two tools are provided by TLS to enable validation of client source addresses at a server: the cookie in the HelloRetryRequest message, and the ticket in the NewSessionTicket message.best chat up lines for online dating

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sim date spiele kostenlos The cookie extension in the TLS HelloRetryRequest message allows a server to perform source address validation during the handshake.pick up lines for online dating sites

wo machen singles urlaub When QUIC requests address validation during the processing of the first ClientHello, the token it provides is included in the cookie extension of a HelloRetryRequest. As long as the cookie cannot be successfully guessed by a client, the server can be assured that the client received the HelloRetryRequest if it includes the value in a second ClientHello.pick up lines for online dating

deutsche top 100 single charts liste An initial ClientHello never includes a cookie extension. Thus, if a server constructs a cookie that contains all the information necessary to reconstruct state, it can discard local state after sending a HelloRetryRequest. Presence of a valid cookie in a ClientHello indicates that the ClientHello is a second attempt from the client.chat up lines for online dating

deutsche top 100 single charts media control An address validation token can be extracted from a second ClientHello and passed to the transport for further validation. If that validation fails, the server MUST fail the TLS handshake and send an illegal_parameter alert.funny pick up lines for online dating

deutsche top 100 single charts 2014 Combining address validation with the other uses of HelloRetryRequest ensures that there are fewer ways in which an additional round-trip can be added to the handshake. In particular, this makes it possible to combine a request for address validation with a request for a different client key share.best pick up lines for online dating

deutsche top 100 single charts If TLS needs to send a HelloRetryRequest for other reasons, it needs to ensure that it can correctly identify the reason that the HelloRetryRequest was generated. During the processing of a second ClientHello, TLS does not need to consult the transport protocol regarding address validation if address validation was not requested originally. In such cases, the cookie extension could either be absent or it could indicate that an address validation token is not present.chat up lines for her online dating

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shoutcast stream german top100 single charts A server can use the cookie extension to store all state necessary to continue the connection. This allows a server to avoid committing state for clients that have unvalidated source addresses.top 50 single charts august 2014

iranische single frauen in deutschland For instance, a server could use a statically-configured key to encrypt the information that it requires and include that information in the cookie. In addition to address validation information, a server that uses encryption also needs to be able recover the hash of the ClientHello and its length, plus any information it needs in order to reconstruct the HelloRetryRequest.top 100 single charts august 2014

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top ten single charts märz 2014 A server does not need to maintain state for the connection when sending a HelloRetryRequest message. This might be necessary to avoid creating a denial of service exposure for the server. However, this means that information about the transport will be lost at the server. This includes the stream offset of stream 0, the packet number that the server selects, and any opportunity to measure round trip time.tschechische singles in deutschland

top 20 single charts märz 2014 A server MUST send a TLS HelloRetryRequest in a Server Stateless Retry packet. Using a Server Stateless Retry packet causes the client to reset stream offsets. It also avoids the need for the server select an initial packet number, which would need to be remembered so that subsequent packets could be correctly numbered.german top 100 single charts 1980

top 30 single charts märz 2014 A HelloRetryRequest message MUST NOT be split between multiple Server Stateless Retry packets. This means that HelloRetryRequest is subject to the same size constraints as a ClientHello (see philippines online dating sites).top 100 single charts deutschland 1983

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top 100 single charts 2013 musicload The ticket in the TLS NewSessionTicket message allows a server to provide a client with a similar sort of token. When a client resumes a TLS connection - whether or not 0-RTT is attempted - it includes the ticket in the handshake message. As with the HelloRetryRequest cookie, the server includes the address validation token in the ticket. TLS provides the token it extracts from the session ticket to the transport when it asks whether source address validation is needed.single charts top 100 deutschland media control

top 100 single charts 2013 If both a HelloRetryRequest cookie and a session ticket are present in the ClientHello, only the token from the cookie is passed to the transport. The presence of a cookie indicates that this is a second ClientHello - the token from the session ticket will have been provided to the transport when it appeared in the first ClientHello.osteuropäische singles in deutschland

musik single charts top 100 deutschland A server can send a NewSessionTicket message at any time. This allows it to update the state - and the address validation token - that is included in the ticket. This might be done to refresh the ticket or token, or it might be generated in response to changes in the state of the connection. QUIC can request that a NewSessionTicket be sent by providing a new address validation token.partnervermittlung bukarest antoinette

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charts top 100 deutschland single 2000 TLS MUST provide integrity protection for address validation token unless the transport guarantees integrity protection by other means. For a NewSessionTicket that includes confidential information - such as the resumption secret - including the token under authenticated encryption ensures that the token gains both confidentiality and integrity protection without duplicating the overheads of that protection.top 100 single charts germany 2014

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single charts top 100 deutschland 2014 Implementations MUST NOT exchange data on any stream other than stream 0 without packet protection. QUIC requires the use of several types of frame for managing loss detection and recovery during this phase. In addition, it might be useful to use the data acquired during the exchange of unauthenticated messages for congestion control.single charts top 100 deutschland liste

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top 100 single charts september 2011 This section describes the handling of messages that are sent and received prior to the completion of the TLS handshake.hotels nur für singles in deutschland

top 100 single charts november 2011 Sending and receiving unprotected messages is hazardous. Unless expressly permitted, receipt of an unprotected message of any kind MUST be treated as a fatal error.neue singles in deutschland

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german top 100 single charts 2015 share online Receiving unprotected alternative partnervermittlung cpd STREAM frames for other streams MUST be treated as a fatal error.speed dating deutschland

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0-RTT data can be acknowledged by the server as it receives it, but any packets containing acknowledgments of 0-RTT data cannot have packet protection removed by the client until the TLS handshake is complete. The 1-RTT keys necessary to remove packet protection cannot be derived until the client receives all server handshake messages.

german top 100 single charts 2015 cannapower An endpoint SHOULD use data from singlebörsen test kostenlos ACK frames carried in unprotected packets or packets protected with 0-RTT keys only during the initial handshake. All top singlebörsen kostenlos ACK frames contained in unprotected packets that are received after successful receipt of a packet protected with 1-RTT keys MUST be discarded. An endpoint SHOULD therefore include acknowledgments for unprotected and any packets protected with 0-RTT keys until it sees an acknowledgment for a packet that is both protected with 1-RTT keys and contains an partnervermittlung für alternative ACK frame.viva top 100 single charts 2005

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german top 100 single charts 2015 goldesel Though data is exchanged on stream 0, the initial flow control window on that stream is sufficiently large to allow the TLS handshake to complete. This limits the maximum size of the TLS handshake and would prevent a server or client from using an abnormally large certificate chain.top 100 single charts mtv

partnersuche de newsletter abbestellen englisch Stream 0 is exempt from the connection-level flow control window.viva top 100 single charts 2010

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partnersuche de newsletter abbestellen recht Accepting unprotected - specifically unauthenticated - packets presents a denial of service risk to endpoints. An attacker that is able to inject unprotected packets can cause a recipient to drop even protected packets with a matching sequence number. The spurious packet shadows the genuine packet, causing the genuine packet to be ignored as redundant.gratis partnersuche südtirol

partnersuche de newsletter abbestellen rechtslage Once the TLS handshake is complete, both peers MUST ignore unprotected packets. From that point onward, unprotected messages can be safely dropped.seriöse singlebörse für frauen kostenlos

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welche singlebörsen sind 100 prozent kostenlos # To avoid receiving TLS packets that contain no useful data, a TLS implementation MUST reject empty TLS handshake records and any record that is not permitted by the TLS state machine. Any TLS application data or alerts that is received prior to the end of the handshake MUST be treated as a fatal error.top 100 single charts deutschland mai 2015

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top 100 single charts zum ausdrucken A client MUST only use 0-RTT keys to protect data that is idempotent. A client MAY wish to apply additional restrictions on what data it sends prior to the completion of the TLS handshake. A client otherwise treats 0-RTT keys as equivalent to 1-RTT keys.partnersuche für leute über 50

partnersuche de newsletter abbestellen formulierung A client that receives an indication that its 0-RTT data has been accepted by a server can send 0-RTT data until it receives all of the server’s handshake messages. A client SHOULD stop sending 0-RTT data if it receives an indication that 0-RTT data has been rejected.sim dating games for guys online

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singlebörsen für mollige navabi Packets protected with 1-RTT keys MAY be stored and later decrypted and used once the handshake is complete. A server MUST NOT use 1-RTT protected packets before verifying either the client Finished message or - in the case that the server has chosen to use a pre-shared key - the pre-shared key binder (see single charts 2011 top 100 of [I-D.ietf-tls-tls13]). Verifying these values provides the server with an assurance that the ClientHello has not been modified.chat in der schweiz youtube

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deutsche single charts top 100 aktuell QUIC uses the TLS handshake for more than just negotiation of cryptographic parameters. The TLS handshake validates protocol version selection, provides preliminary values for QUIC transport parameters, and allows a server to perform return routeability checks on clients.single charts top 100 anhören

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viva top 100 single charts aktuell The QUIC version negotiation mechanism is used to negotiate the version of QUIC that is used prior to the completion of the handshake. However, this packet is not authenticated, enabling an active attacker to force a version downgrade.partnersuche für über 50 jährige

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single mit kind hotel deutschland TLS uses Application Layer Protocol Negotiation (ALPN) [RFC7301] to select an application protocol. The application-layer protocol MAY restrict the QUIC versions that it can operate over. Servers MUST select an application protocol compatible with the QUIC version that the client has selected.german top 100 single charts radio

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partnersuche de newsletter abbestellen web.de QUIC transport parameters are carried in a TLS extension. Different versions of QUIC might define a different format for this struct.uk single charts november 2014

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   enum {
      quic_transport_parameters(26), (65535)
   } ExtensionType;

top 100 single charts deutschland oktober 2013 The top 100 single charts germany liste extension_data field of the quic_transport_parameters extension contains a value that is defined by the version of QUIC that is in use. The quic_transport_parameters extension carries a TransportParameters when the version of QUIC defined in [QUIC-TRANSPORT] is used.thai dating germany

partnersuche pforzheim kostenlos The quic_transport_parameters extension is carried in the ClientHello and the EncryptedExtensions messages during the handshake. The extension MAY be included in a NewSessionTicket message.german top 100 single charts august 2013

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singlebörse gratis frauen All the restrictions on the use of 0-RTT apply, with the exception of the ALPN label, which MUST only change to a label that is explicitly designated as being compatible. The client indicates which ALPN label it has chosen by placing that ALPN label first in the ALPN extension.gratis partnersuche kärnten

singlebörse für mollige deutschland The certificate that the server uses MUST be considered valid for both connections, which will use different protocol stacks and could use different port numbers. For instance, HTTP/1.1 and HTTP/2 operate over TLS and TCP, whereas QUIC operates over UDP.singlebörsen unter 18 kostenlos

gratis partnerbörse berlin Source address validation is not completely portable between different protocol stacks. Even if the source IP address remains constant, the port number is likely to be different. Packet reflection attacks are still possible in this situation, though the set of hosts that can initiate these attacks is greatly reduced. A server might choose to avoid source address validation for such a connection, or allow an increase to the amount of data that it sends toward the client without source validation.singlebörsen wo alles kostenlos ist

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partnersuche de newsletter abbestellen text A small ClientHello that results in a large block of handshake messages from a server can be used in packet reflection attacks to amplify the traffic generated by an attacker.schwule singlebörsen kostenlos

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how to write a great female online dating profile QUIC requires that the packet containing a ClientHello be padded to a minimum size. A server is less likely to generate a packet reflection attack if the data it sends is a small multiple of this size. A server SHOULD use a HelloRetryRequest if the size of the handshake messages it sends is likely to significantly exceed the size of the packet containing the ClientHello.partnersuche ueber 50

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singlebörsen für mollige tipps QUIC prohibits the sending of empty german top 100 single charts 1974 STREAM frames unless they are marked with the FIN bit. This prevents partnervermittlung antoinette test STREAM frames from being sent that only waste effort.partnersuche 50+ wien

partnersuche de newsletter abbestellen online TLS records SHOULD always contain at least one octet of a handshake messages or alert. Records containing only padding are permitted during the handshake, but an excessive number might be used to generate unnecessary work. Once the TLS handshake is complete, endpoints SHOULD NOT send TLS application data records unless it is to hide the length of QUIC records. QUIC packet protection does not include any allowance for padding; padded TLS application data records can be used to mask the length of QUIC frames.single börsen kostenlos youtube

partnersuche de newsletter abbestellen otto While there are legitimate uses for some redundant packets, implementations SHOULD track redundant packets and treat excessive volumes of any non-productive packets as indicative of an attack.singlebörsen 50 plus kostenlos

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female online dating profile sample This section defines error codes from the error code space used in [QUIC-TRANSPORT].alternative partnervermittlung kostenlos

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The TLS handshake failed.
A TLS fatal alert was sent, causing the TLS connection to end prematurely.
A TLS fatal alert was received, causing the TLS connection to end prematurely.

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top 100 single charts april 2015 canna This document does not create any new IANA registries, but it registers the values in the following registries:top 100 single charts deutschland stream

Table 1: QUIC Transport Error Codes for TLS
0x201TLS_HANDSHAKE_FAILEDTLS handshake failuretop 100 single charts mai 2014
0x202TLS_FATAL_ALERT_GENERATEDSent TLS alertsingle charts 2014 liste
0x203TLS_FATAL_ALERT_RECEIVEDReceives TLS alertalternative partnervermittlung ukraine

us single charts märz 2014 References

top 10 single charts märz 2014 Normative References

Department of Commerce, National Institute of Standards and Technology, U., “top single charts märz 2014”, March 2012, <singlebörsen für ältere kostenlos>.
Rescorla, E., “singlebörsen für dicke kostenlos”, Internet-Draft draft-ietf-tls-tls13-21 (work in progress), July 2017.
Iyengar, J., Ed. and M. Thomson, Ed., “partnersuche paderborn kostenlos”, Internet-Draft draft-ietf-quic-transport-latest (work in progress).
Bradner, S., “german top 100 single charts 2014 boerse.bz”, BCP 14, RFC 2119, german single charts 2015 top 100, March 1997, <german singles top 100>.
McGrew, D., “german singles top 100 canna”, RFC 5116, german single charts top 100 januar 2014, January 2008, <aktuelle deutsche single charts 2013>.
Krawczyk, H. and P. Eronen, “german single charts juni 2013”, RFC 5869, german top100 single charts juni 2013, May 2010, <german top100 single charts oktober 2013>.
Friedl, S., Popov, A., Langley, A., and E. Stephan, “alternative partnervermittlung vergleich”, RFC 7301, american singles in okinawa, July 2014, <partnersuche 50 plus>.
Salowey, J. and S. Turner, “german top 100 single charts april 2013”, Internet-Draft draft-ietf-tls-iana-registry-updates-01 (work in progress), April 2017.

single charts dezember 1973 Informative References

Luykx, A. and K. Paterson, “online dating for married couples”, March 2016, <jüdische singles in deutschland>.
Bishop, M., Ed., “japanische singles in deutschland”, Internet-Draft draft-ietf-quic-http-latest (work in progress).
Iyengar, J., Ed. and I. Swett, Ed., “free online dating sites in karachi”, Internet-Draft draft-ietf-quic-recovery-latest (work in progress).
Rescorla, E., “singlebörsen kostenlos leipzig”, RFC 2818, american singles in vienna, May 2000, <dating sim spiele kostenlos>.
Cooper, D., Santesson, S., Farrell, S., Boeyen, S., Housley, R., and W. Polk, “dating simulation game for boy”, RFC 5280, anime date spiele kostenlos, May 2008, <partnervermittlung antoinette quotes>.
Santesson, S. and H. Tschofenig, “german top 100 single charts 1984”, RFC 7924, top 100 single charts deutschland januar 2012, July 2016, <online dating south america>.

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top 40 singles charts april 2015 This document has benefited from input from Dragana Damjanovic, Christian Huitema, Jana Iyengar, Adam Langley, Roberto Peon, Eric Rescorla, Ian Swett, and many others.flirt chat apps for android

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  • Update labels used in HKDF-Expand-Label to match TLS 1.3 (#642)

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  • Updates to match changes in transport draft

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  • Use TLS alerts to signal TLS errors (#272, #374)
  • Require ClientHello to fit in a single packet (#338)
  • The second client handshake flight is now sent in the clear (#262, #337)
  • The QUIC header is included as AEAD Associated Data (#226, #243, #302)
  • Add interface necessary for client address validation (#275)
  • Define peer authentication (#140)
  • Require at least TLS 1.3 (#138)
  • Define transport parameters as a TLS extension (#122)
  • Define handling for protected packets before the handshake completes (#39)
  • Decouple QUIC version and ALPN (#12)

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  • Changed bit used to signal key phase
  • Updated key phase markings during the handshake
  • Added TLS interface requirements section
  • Moved to use of TLS exporters for key derivation
  • Moved TLS error code definitions into this document

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  • Adopted as base for draft-ietf-quic-tls
  • Updated authors/editors list
  • Added status note

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singlebörse für mollige menschen Martin Thomson (editor)
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