公开(公告)号：US20180323969A1

公开(公告)日：2018-11-08

申请号：US16043972

申请日：2018-07-24

Applicant: CLOUDFLARE, INC.

Inventor： Sébastien Andreas Henry Pahl ,  Matthieu Philippe François Tourne ,  Piotr Sikora ,  Ray Raymond Bejjani ,  Dane Orion Knecht ,  Matthew Browning Prince ,  John Graham-Cumming ,  Lee Hahn Holloway ,  Nicholas Thomas Sullivan ,  Albertus Strasheim

IPC: H04L9/08 ,  H04L9/32 ,  H04L29/06 ,  H04L9/14 ,  H04L9/30

CPC classification number: H04L9/0844 ,  H04L9/14 ,  H04L9/30 ,  H04L9/321 ,  H04L9/3263 ,  H04L9/3268 ,  H04L63/061 ,  H04L63/166

Abstract: A first server establishes a secure session with a client device where a private key used in the handshake when establishing the secure session is stored in a different, second, server. The first server transmits messages between the client device and the second server where the second server has access to a private key that is not available on the first server. The first server receives from the second server a set of session key(s) used in the secure session for encrypting/decrypting communication between the client device and the first server. The session key(s) are generated using a master secret that is generated using a premaster secret generated using Diffie-Hellman public values selected by the client device and the second server. The first server uses the session key(s) to encrypt/decrypt communication with the client device.

公开(公告)号：US20170171172A1

公开(公告)日：2017-06-15

申请号：US14964491

申请日：2015-12-09

Applicant: CLOUDFLARE, INC.

Inventor： Nicholas Thomas Sullivan ,  Lee Hahn Holloway ,  Piotr Sikora ,  Ryan Lackey ,  John Graham-Cumming ,  Dane Orion Knecht ,  Patrick Donahue ,  Zi Lin

IPC: H04L29/06 ,  G06F21/33

CPC classification number: H04L63/061 ,  G06F21/33 ,  H04L63/205

Abstract: A server receives a request from a client to establish a secure session. The server analyzes the request to determine a set of one or more properties of the request. The server selects, based at least in part on the determined set of properties, one of multiple certificates for a hostname of the server, where each of the certificates is signed using a different signature and hash algorithm pair. The server returns the selected certificate to the client.

公开(公告)号：US20160014114A1

公开(公告)日：2016-01-14

申请号：US14675385

申请日：2015-03-31

Applicant: CLOUDFLARE, INC.

Inventor： Sébastien Andreas Henry Pahl ,  Matthieu Philippe François Tourne ,  Piotr Sikora ,  Ray Raymond Bejjani ,  Dane Orion Knecht ,  Matthew Browning Prince ,  John Graham-Cumming ,  Lee Hahn Holloway ,  Nicholas Thomas Sullivan ,  Albertus Strasheim

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L9/3263 ,  G06F21/33 ,  H04L9/083 ,  H04L9/0841 ,  H04L9/0844 ,  H04L9/14 ,  H04L9/3013 ,  H04L9/3247 ,  H04L63/0428 ,  H04L63/0485 ,  H04L63/061 ,  H04L63/0823 ,  H04L63/0869 ,  H04L63/164 ,  H04L63/166 ,  H04L63/205 ,  H04L67/141 ,  H04L67/42

Abstract: A server establishes a secure session with a client device where a private key used in the handshake when establishing the secure session is stored in a different server. During the handshake procedure, the server receives a premaster secret that has been encrypted using a public key bound with a domain for which the client device is attempting to establish a secure session with. The server transmits the encrypted premaster secret to the different server for decryption along with other information necessary to compute a master secret. The different server decrypts the encrypted premaster secret, generates the master secret, and transmits the master secret to the server. The server receives the master secret and continues with the handshake procedure including generating one or more session keys that are used in the secure session for encrypting and decrypting communication between the client device and the server.

Abstract translation: 服务器与客户端设备建立安全会话，其中在建立安全会话时用于握手的私钥被存储在不同的服务器中。 在握手过程中，服务器接收使用与客户端设备尝试建立安全会话的域绑定的公共密钥进行加密的预安全秘密。 服务器将加密的前端机密发送到不同的服务器以进行解密，以及计算主密钥所需的其他信息。 不同的服务器解密加密的前提密码，生成主密钥，并将主密钥发送到服务器。 服务器接收主密钥并继续握手过程，包括生成在安全会话中使用的一个或多个会话密钥，用于加密和解密客户端设备与服务器之间的通信。