公开(公告)号：US11146393B2

公开(公告)日：2021-10-12

申请号：US16630434

申请日：2018-07-11

申请人： SLUX SAGL

发明人： Alessandro Pasquali

IPC分类号： H04L9/08 ,  H04K1/04 ,  H04K1/08 ,  H04L9/06

摘要： Encoding element (100) at least selectively transparent to an infrared or ultraviolet light radiation, incident thereon on a first incidence surface (101), wherein—in the volume defined by said encoding element (100)—a plurality of areas (104) is provided, previously selected and arranged according to a predefined pattern wherein at least one polarisation characteristic of the optical radiation (200) that is incident thereon is varied, wherein the variation of said polarisation characteristic of said incident radiation is varied according to a localised alteration pattern biunivocally associated to a predefined ciphering key, and wherein said plurality of areas is arranged between said first incidence surface (101) on which said infrared or ultraviolet light radiation is incident in use, and a second output surface (102) of said infrared or ultraviolet light optical radiation.

公开(公告)号：US07889868B2

公开(公告)日：2011-02-15

申请号：US11239328

申请日：2005-09-30

申请人： Glenn A. Wellbrock ,  Tiejun J. Xia ,  David Z. Chen

发明人： Glenn A. Wellbrock ,  Tiejun J. Xia ,  David Z. Chen

IPC分类号： H04K1/00 ,  H04K1/08 ,  H04K1/10

CPC分类号： H04L9/0858

摘要： A method is provided for distributing quantum cryptographic keys. The method includes receiving a first quantum signal from an initial quantum key generating transmitter. Following correspondence with the initial quantum key generating transmitter, a first quantum key is generated. A second quantum signal is transmitted to a recipient quantum key generating transmitter. Following correspondence with the recipient quantum key generating receiver, a second quantum key is generated. The first quantum key is encoded using the second quantum key. The encoded first quantum key is transmitted to the recipient quantum key generating receiver using the second quantum key.

摘要翻译： 提供了一种分配量子加密密钥的方法。 该方法包括从初始量子密钥生成发射机接收第一量子信号。 在与初始量子密钥生成发射机对应之后，产生第一量子密钥。 第二量子信号被发送到接收量子密钥发生器。 在与收件人量子密钥生成接收者对应之后，产生第二量子密钥。 使用第二量子密钥对第一量子密钥进行编码。 使用第二量子密钥将编码的第一量子密钥发送到接收量子密钥生成接收器。

公开(公告)号：US4638494A

公开(公告)日：1987-01-20

申请号：US65040

申请日：1970-08-19

申请人： Earl M. Kartchner ,  Robert Price ,  Gary R. Van Horn

发明人： Earl M. Kartchner ,  Robert Price ,  Gary R. Van Horn

IPC分类号： H04B1/7075 ,  H04B1/7077 ,  H04K3/00 ,  H04K1/08

CPC分类号： H04B1/7075 ,  H04K3/228 ,  H04K3/25 ,  H04K3/46 ,  H04K3/65 ,  H04B1/7077

摘要： A system for the secure and rapid acquisition of a transmitted acquisition composite code composed from acquisition component codes. The acquisition composite code may, for example, be composed in accordance with a Boolean majority voting rule. Reference component codes that correlate respectively with the acquisition component codes are combined to provide a verification composite code that correlates with the acquisition composite code only when all of the reference component codes in the verification code are each in alignment with the corresponding acquisition component codes in the acquisition composite code. The verification code may, for example, be composed in accordance with a modulo-2 addition rule. Initially, the reference component codes are individually brought into alignment with the transmitted signal during the acquisition thereof. The verification code is then cross-correlated against the acquired transmitted signal to verify the successful acquisition of the transmitted acquisition composite code.

摘要翻译： 一种用于安全和快速获取由采集组件代码组成的传输采集复合码的系统。 采集复合代码可以例如根据布尔多数投票规则组成。 将与采集分量代码分别相关联的参考分量代码被组合以提供与获取合成代码相关的验证复合代码，只有当验证码中的所有参考分量代码都与所述获取组合代码中的相应采集分量代码对齐时 采集复合代码。 验证码可以例如根据模2加法规则来组成。 最初，参考分量代码在其获取期间被单独地与发送的信号对准。 然后，验证码与所获取的发送信号相互关联，以验证所发送的采集复合码的成功获取。

公开(公告)号：US10511437B1

公开(公告)日：2019-12-17

申请号：US15725701

申请日：2017-10-05

申请人： International Center for Quantum Optics & Quantum Technologies LLC

发明人： Vasily Yevgenyevich Ustimchik ,  Alexander Valerievich Duplinsky ,  Yury Vladimirovich Kurochkin ,  Vladimir Leonidovich Kurochkin ,  Alan Alexandrovich Kanapin

IPC分类号： H04L9/08 ,  H04B10/70 ,  H04B10/50 ,  H04K1/00 ,  H04B10/60 ,  H04K1/08

摘要： Quantum key distribution device includes a transmitter, including a light source, a first polarization controller, a phase modulator and an optical attenuator, all connected in series using a first optical fiber; a receiver, including a second polarization controller, a second phase modulator, a third polarization controller, a beamsplitter, and two single photon detectors, all connected in series using a second optical fiber; and a communication channel providing a light path from the transmitter to the receiver. The first and/or second optical fiber is a polarization maintaining fiber. The first and second phase modulators are actively controlled Pockels cell crystals, lithium niobate crystals or gallium arsenide crystals. The polarization controllers include a piezo-driven fiber compression device, a Pockels cell controller, a piezo-driven fiber twist device, or a non-linear optical crystal. The first and third polarization controllers use a λ/2 plate, or 45° fiber splice polarizer.

公开(公告)号：US07317796B2

公开(公告)日：2008-01-08

申请号：US10664438

申请日：2003-09-18

申请人： Wen-Hao Hsu

发明人： Wen-Hao Hsu

IPC分类号： H04K1/08 ,  H04M1/70 ,  H04M3/56

CPC分类号： H04N21/44055 ,  H04N7/1675 ,  H04N21/234327 ,  H04N21/23476 ,  H04N21/63345 ,  H04N21/835

摘要： A system and method of video stream encryption. A storage device stores a first quantization scale and a second quantization scale. An encryption application receives video data, a first quantization scale and a second quantization scale, generating quantized data by dividing the video into the first quantization scale, generating supplementary data by subtracting the quantized data multiplied by the first quantization scale from the video data, generating quantized supplementary data by dividing the supplementary data into the second quantization scale, and generating encrypted quantized supplementary data using variable length encoding and symmetrical/asymmetrical encryption algorithm.

摘要翻译： 视频流加密的系统和方法。 存储装置存储第一量化尺度和第二量化尺度。 加密应用程序接收视频数据，第一量化尺度和第二量化尺度，通过将视频划分成第一量化尺度来产生量化数据，通过从视频数据中减去乘以第一量化尺度的量化数据产生补充数据，产生 通过将补充数据划分为第二量化尺度，并使用可变长度编码和对称/非对称加密算法生成加密的量化补充数据来量化补充数据。

公开(公告)号：US06961428B1

公开(公告)日：2005-11-01

申请号：US09914337

申请日：2000-02-18

申请人： Chao Liu

发明人： Chao Liu

IPC分类号： G06F11/30 ,  G09C3/00 ,  H04K1/06 ,  H04K1/08 ,  H04K1/10 ,  H04L9/00 ,  H04L29/06

CPC分类号： H04L63/0428 ,  H04K1/08 ,  H04K1/10

摘要： A technique of enciphering the graph-text document and its security transfer on a network. The sender of the graph-text document enciphers at least one graph-text document with digitizing algorithm provided by a control center and producing an enciphered and compressed cryptic document. Sender sends this enciphered cryptic document to a recipient, who prints out the enciphered graph-text document. The control center sends the positioning parameters of a reader sheet, the coordinates of the pole and the polar angle, to the recipient, who puts the reader sheet onto the document sheet at the right position and right orientation as indicated by the parameters received. The original document thus is revealed as a four dimensional (four parametric) document and is ready to be read.

摘要翻译： 在网络上加密图形文本文档及其安全传输的技术。 图形文本文档的发送者使用控制中心提供的数字化算法加密至少一个图形文本文档，并生成加密和压缩的隐藏文档。 发件人将此加密的隐秘文件发送给收件人，该收件人打印出加密的图形文本文档。 控制中心将阅读器片材的定位参数，极点坐标和极角度发送到收件人，收件人将阅读器片材按正确的位置和正确的方向放置在文档页面上，如所接收的参数所示。 因此，原始文档被显示为四维（四参数）文档，并且可以被读取。

公开(公告)号：US2350331A

公开(公告)日：1944-06-06

申请号：US41642941

申请日：1941-10-25

申请人： FARNSWORTH TELEVISION & RADIO

发明人： HANS SALINGER

IPC分类号： H04K1/08

CPC分类号： H04K1/08

公开(公告)号：US11860376B2

公开(公告)日：2024-01-02

申请号：US16415708

申请日：2019-05-17

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Kap-Joong Kim ,  Chun Ju Youn ,  Heasin Ko ,  Byung-Seok Choi ,  Joong-Seon Choe

IPC分类号： G02B27/28 ,  H04K1/08

CPC分类号： G02B27/283 ,  G02B27/286 ,  H04K1/08

摘要： Provided is a polarization decomposition device. The polarization decomposition device includes a polarization beam splitter configured to split an optical signal into a first polarized light having a first polarization direction and a second polarized light having a second polarization direction different from the first polarized light, a phase shifter configured to delay a phase of the first polarized light, a polarization rotator configured to rotate the second polarized light so that the polarization direction of the second polarized light is changed, and an interference beam splitter configured to allow the first polarized light in which the phase is delayed and the second polarized light in which the polarization direction is rotated to interfere with each other and split them into a third polarized light and a fourth polarized light.

公开(公告)号：US20220329344A1

公开(公告)日：2022-10-13

申请号：US17630912

申请日：2020-07-16

申请人： Sony Group Corporation

发明人： Felix FELLHAUER ,  Maximilian ARNOLD ,  Stephen TIEDEMANN ,  Dana CIOCHINA ,  Thomas HANDTE ,  Nabil Sven LOGHIN

IPC分类号： H04K1/08 ,  H04B7/06 ,  H04L9/40 ,  H04W12/02 ,  H04W12/122

摘要： A first communication device for use in a wireless communication system to communicate with a second communication device comprises circuitry configured to perform beamforming training with the second communication device to train a plurality of antenna beam combinations of antenna beams used by the first and second communication devices for transmitting and/or receiving signals, select one or more of the trained antenna beam combinations according to a security criterion that is directed to reducing the probability that a third communication device can eavesdrop on the communication between the first communication device and the second communication device, and communicate with the second communication device using the selected one or more antenna beam combinations.

公开(公告)号：USRE49244E1

公开(公告)日：2022-10-11

申请号：US16295722

申请日：2019-03-07

申请人： PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

发明人： Masayuki Orihashi ,  Yutaka Murakami ,  Katsuaki Abe ,  Akihiko Matsuoka

IPC分类号： H04L9/12 ,  H04L9/08 ,  H04B1/7113 ,  H04K1/00 ,  H04W12/04 ,  H04B1/7115 ,  H04W12/77 ,  H04K1/10 ,  H04K1/08

摘要： A communication apparatus includes a reference signal generating section, a transmitting section, a propagation estimating section, a first data acquiring section, and a decoding section. The reference signal generating section generates a first reference signal to enable a communicating party to estimate a propagation environment. The transmitting section transmits the first reference signal. The propagation estimating section estimates a first propagation estimation value of the propagation environment using a second reference signal transmitted from the communicating party. The first data acquiring section generates first data using the first propagation estimation value. The decoding section decodes a transmission signal encoded using a second propagation estimation value that is estimated by the communicating party using the first reference signal, to obtain second data using the first data.