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    • 4. 发明授权
    • Verifying cryptographic identity during media session initialization
    • 在媒体会话初始化期间验证加密身份
    • US08533462B2
    • 2013-09-10
    • US13493302
    • 2012-06-11
    • Daniel G. WingCullen F. Jennings
    • Daniel G. WingCullen F. Jennings
    • H04L29/06
    • H04L63/126H04L63/0823
    • An authentication agent may cryptographically identify a remote endpoint that sent a media initialization message even though intermediate devices may modify certain fields in the message after a signature is inserted. The originating endpoint's agent may create the signature over some fields of the message using an enterprise network's private key. The agent may insert the signature into the message and send the message to a recipient endpoint's authentication agent. The recipient agent may verify the signature, receive a certificate including a second public key, and challenge the identity of the originating endpoint in order to confirm that identity. This challenge may request a confirmation that the originating endpoint knows the private key corresponding to the second public key and may occur while running encrypted media at the endpoints. After the originating endpoint is authenticated, the endpoints may exchange encrypted and/or unencrypted media.
    • 认证代理可以密码地标识发送媒体初始化消息的远程端点,即使中间设备可以在签名被插入之后修改消息中的某些字段。 始发端点的代理可以使用企业网络的私钥在消息的某些字段上创建签名。 代理可以将签名插入消息中,并将消息发送到接收方端点的认证代理。 接收方代理可以验证签名,接收包括第二公钥的证书,并且对发起端点的身份进行质询以便确认该身份。 该挑战可以请求确认始发端点知道与第二公钥相对应的私钥,并且可能在端点处运行加密媒体时发生。 在始发端点被认证之后,端点可以交换加密和/或未加密的媒体。
    • 8. 发明授权
    • Method and apparatus for token distribution in session for future polling or subscription
    • 用于未来轮询或订阅的会话中的令牌分发的方法和装置
    • US07764945B2
    • 2010-07-27
    • US11371606
    • 2006-03-08
    • James M. PolkCullen F. Jennings
    • James M. PolkCullen F. Jennings
    • H04M11/04
    • H04L63/0823H04L63/0428
    • A system and a method are disclosed for authenticating a subsequent callback from a public safety answering point (PSAP) in response to a user agent's initial emergency call. In one embodiment, the user agent forwards a token to the PSAP during the initial call, and the PSAP returns the token during callback. The PSAP is authenticated when the forwarded and returned tokens match. In another embodiment, the user agent encrypts a token using a Public Key Infrastructure and forwards the encrypted token to the PSAP. The PSAP decrypts the token and, upon callback, includes a signed digital certificate based on the token. The user agent authenticates the PSAP when the decrypted digital certificate matches the originally sent token. In yet another embodiment, the user agent forwards a first token to the PSAP. Upon callback, the user agent forwards a second token to the PSAP. The PSAP performs a function on the pair of received tokens and forward the result to the user agent. The user agent performs the same function on the same tokens to obtain a local result. The user agent authenticates the PSAP when the local and forwarded results match.
    • 公开了一种用于响应于用户代理的初始紧急呼叫从公共安全应答点(PSAP)认证后续回叫的系统和方法。 在一个实施例中,用户代理在初始呼叫期间将令牌转发到PSAP,并且PSAP在回叫期间返回令牌。 当转发和返回的令牌匹配时,PSAP被认证。 在另一个实施例中,用户代理使用公共密钥基础设施来加密令牌,并将加密的令牌转发到PSAP。 PSAP解密令牌,并且在回叫时,包含基于令牌的签名数字证书。 当解密的数字证书与原始发送的令牌匹配时,用户代理对PSAP进行认证。 在另一个实施例中,用户代理将第一令牌转发到PSAP。 在回调时,用户代理将第二个令牌转发到PSAP。 PSAP对所接收的令牌执行一个功能,并将结果转发给用户代理。 用户代理在相同的令牌上执行相同的功能以获取本地结果。 当本地和转发结果匹配时,用户代理对PSAP进行身份验证。