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    • 23. 发明授权
    • MPEG-4 encryption enabling transcoding without decryption
    • 支持MPEG-4加密,无需解密
    • US07953224B2
    • 2011-05-31
    • US11419464
    • 2006-05-19
    • Bin ZhuChang Wen ChenShipeng LiYang Yang
    • Bin ZhuChang Wen ChenShipeng LiYang Yang
    • H04L9/00
    • H04N7/1675H04N19/20H04N19/34H04N21/2347H04N21/8451
    • A method and system for encrypting a video compressed with MPEG-4 FGS compression with minimal overhead is provided. The encryption system encrypts the video into independently encrypted segments that can be either a video packet or a video block. When the encryption system encrypts based on video packets, it encrypts the data to ensure that the encrypted data does not emulate any video packet delimiting markers. When the encryption system encrypts based on video blocks, it encrypts the coded bitstream for each video block independently, from the most significant bitplane to the least significant bitplane, using either a stream or a block cipher. After all the video blocks are independently encrypted, the encryption system partitions the encrypted data into video packets and adds a buffering bit, if necessary, to prevent emulation of video packet delimiting markers. The encryption system may generate an initialization vector for each independently encrypted segment.
    • 提供了一种用于以最小的开销加密以MPEG-4FGS压缩压缩的视频的方法和系统。 加密系统将视频加密成可以是视频分组或视频块的独立加密的分段。 当加密系统基于视频数据包进行加密时,它对数据进行加密,以确保加密的数据不会模拟任何视频数据包分隔标记。 当加密系统基于视频块加密时,它使用流或分组密码,从最高有效位平面到最低有效位平面,独立地加密每个视频块的编码位流。 在所有视频块被独立加密之后,加密系统将加密的数据分割成视频分组,并在必要时添加缓冲位以防止视频分组分隔标记的仿真。 加密系统可以为每个独立加密的段生成初始化向量。
    • 26. 发明申请
    • Multimedia Data Embedding and Decoding
    • 多媒体数据嵌入和解码
    • US20090304226A1
    • 2009-12-10
    • US12273479
    • 2008-11-18
    • Ahmed TewfikMitchell D. SwansonBin Zhu
    • Ahmed TewfikMitchell D. SwansonBin Zhu
    • G06K9/00
    • G06T1/0028G06T1/005G06T2201/0052G06T2201/0065G06T2201/0202G10L19/018
    • A method for embedding data into a media signal receives a media signal, divides the media signal into blocks of samples, and calculates a function of the samples in the blocks, including transformations of samples in the blocks to corresponding block values. A processor uses the block value to determine a factor for samples in the blocks to be multiplied by the samples so that when a data embedding function is evaluated for the block, an output of the data embedding function corresponds to a data value representing desired digital data embedded in the block. A compatible decoder extracts this embedded data from the media signal. The decoder divides the media signal into blocks of samples and calculates a function of the samples in the blocks, including transformations of samples in the blocks to corresponding block values. A processor processes the block value to evaluate a data embedding function to determine digital data embedded in the block.
    • 将数据嵌入到媒体信号中的方法接收媒体信号,将媒体信号划分成采样块,并且计算块中样本的功能,包括将块中的采样转换成相应的块值。 处理器使用块值来确定要乘以样本的块中的样本的因子,使得当对块估计数据嵌入功能时,数据嵌入功能的输出对应于表示期望的数字数据的数据值 嵌入块中。 兼容解码器从媒体信号中提取嵌入数据。 解码器将媒体信号划分为采样块,并计算块中样本的函数,包括将块中的样本转换为相应块值。 处理器处理块值以评估数据嵌入功能以确定嵌入块中的数字数据。
    • 27. 发明申请
    • MOBILE DEVICE ASSISTED SECURE COMPUTER NETWORK COMMUNICATION
    • 移动设备辅助安全计算机网络通信
    • US20090287921A1
    • 2009-11-19
    • US12122126
    • 2008-05-16
    • Bin ZhuMin FengXu YinYang YangYao ZhangJun Shao
    • Bin ZhuMin FengXu YinYang YangYao ZhangJun Shao
    • H04L9/32
    • H04L63/0869G06Q10/02H04L63/0838H04L63/0853H04L63/18H04L2463/082
    • Mobile device assisted secure computer network communications embodiments are presented that employ a mobile device (e.g., a mobile phone, personal digital assistant (PDA), and the like) to assist in user authentication. In general, this is accomplished by having a user enter a password into a client computer which is in contact with a server associated with a secure Web site. This password is integrated with a secret value, which is generated in real time by the mobile device. The secret value is bound to both the mobile device's hardware and the secure Web site being accessed, such that it is unique to both. In this way, a different secret value is generated for each secure Web site accessed, and another user cannot impersonate the user and log into a secure Web site unless he or she knows the password and possesses the user's mobile device simultaneously.
    • 提出了使用移动设备(例如,移动电话,个人数字助理(PDA)等)的移动设备辅助的安全计算机网络通信实施例来协助用户认证。 一般来说,这是通过使用户将密码输入到与与安全网站相关联的服务器联系的客户端计算机来实现的。 这个密码是与移动设备实时生成的秘密值集成的。 秘密值绑定到移动设备的硬件和被访问的安全网站,这两者都是唯一的。 以这种方式,为所访问的每个安全网站生成不同的秘密值,而另一个用户不能模拟用户并登录到安全网站,除非他或她知道密码并同时拥有用户的移动设备。
    • 28. 发明申请
    • Efficient Certified Email Protocol
    • 高效的认证电子邮件协议
    • US20090094452A1
    • 2009-04-09
    • US11868872
    • 2007-10-08
    • Jun ShaoBin ZhuMin Feng
    • Jun ShaoBin ZhuMin Feng
    • H04L9/00
    • H04L9/0844H04L9/321H04L9/3218H04L2209/60
    • An exemplary optimistic protocol for a two-party transaction includes a setup sub-protocol that includes an authorized Diffie-Hellman key agreement, an exchange sub-protocol that includes sending a certificate from a sending party to a receiving party and sending a receipt from the receiving party to the sending party and a dispute sub-protocol that includes a dispute resolution mechanism for resolving disputes between the sending party and the receiving party due to sending of an invalid certificate, due to sending an invalid receipt, or due to abortion of the exchange sub-protocol. Other exemplary methods, systems, etc., are also disclosed.
    • 用于双方交易的示例性乐观协议包括设置子协议,其包括授权的Diffie-Hellman密钥协议,交换子协议,其包括从发送方向接收方发送证书,并从 发送方接收方和争议解决协议,包括解决发送方与接收方之间的争议的争议解决机制,因为发送无效证书,由于发送无效收据,或因堕胎 交换子协议。 还公开了其它示例性方法,系统等。