专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09614847B2 User authentication 有权
公开(公告)号：US09614847B2
公开(公告)日：2017-04-04
申请号：US14639819
申请日：2015-03-05
申请人： Tata Consultancy Services Limited
发明人： Rajan Mindigal Alasingara Bhattachar , Shivraj Vijayshankar Lokamathe , Barkur Suryanarayana Adiga , Balamuralidhar Purushothaman , Sitaram Venkata Chamarty
IPC分类号： H04L29/06 , G06F21/31 , H04L9/08 , H04L9/32 , H04L9/30
CPC分类号： H04L63/0884 , G06F21/31 , H04L9/0866 , H04L9/3066 , H04L9/3228 , H04L9/3297 , H04L63/0838 , H04L2463/061 , H04L2463/121
摘要： Method and system for user authentication are described. The method comprises receiving an authentication code from an application server seeking authentication of the user. Further, a private key of the user is computed in real time based on a user identity (ID) of the user and a master secret key of the PKG. The method further comprises, ascertaining a verification code based on the private key of the user and a verification timestamp, wherein the verification timestamp indicates a time at which the ascertaining of the verification code was initiated. Further, the authentication code is compared with the verification code. Further, the method comprises authenticating the user based on the comparison.

2. 发明授权

US09774577B2 Device, system and method providing data security and attribute based data access in participatory sensing 有权
公开(公告)号：US09774577B2
公开(公告)日：2017-09-26
申请号：US14737605
申请日：2015-06-12
申请人： Tata Consultancy Services Limited
发明人： Shivraj Vijayshankar Lokamathe , Rajan Mindigal Alasingara Bhattachar , Barkur Suryanarayana Adiga , Meena Singh Dilip Thakur , Balamuralidhar Purushothaman
IPC分类号： H04L29/06 , H04L9/30
CPC分类号： H04L63/062 , H04L9/0847 , H04L9/088 , H04L9/30 , H04L9/3073 , H04L63/0428 , H04L63/06
摘要： Disclosed are devices, systems, and methods for securing data using attribute based data access. The data may correspond to a sensory environment, and the data is secured at the device. The device secures the data by segmenting the data into number of segments and defining an access policy, further submitting the access policy to a PKG of system for generating Access Tree having attributes at different level for accessing the data. These Access Trees are securely stored on the device using IBE mechanism. Further, the data after being secured, is uploaded to a system for analysis. At the system, an access request may be received for accessing the data. The access request further includes a request attribute, whereby the system verifies if the attribute satisfies the Access Policy. If the verification is positive, an access may be provided to the data accessor for accessing the data.

3. 发明申请

US20140344651A1 SYSTEM AND METHOD FOR VARYING MEMORY SIZE IN A DATA STREAM PROCESSING 有权
标题翻译：在数据流处理中改变存储器大小的系统和方法
公开(公告)号：US20140344651A1
公开(公告)日：2014-11-20
申请号：US14281142
申请日：2014-05-19
申请人： Tata Consultancy Services Limited
发明人： Addagadde Subramanya Ravishankara Shastry , Barkur Suryanarayana Adiga , Mariswamy Girish Chandra
IPC分类号： H03M13/15
CPC分类号： H03M13/353 , H03M13/136 , H03M13/1515 , H03M13/152 , H03M13/23 , H04N21/23439 , H04N21/2383
摘要： The present disclosure relates to methods, systems, and computer-readable media for varying a memory size in a data stream processing while improving a connection degree sketch. Embodiments of the present disclosure may encode an input data by using an error coding technique to produce an encoded data, wherein the encoded data results in a modified memory size; generate a host connectivity using a set of parameters and applying a reverse sketching technique over the encoded data in order to obtain estimated encoded data; and decode the encoded data after the host connectivity is established using a decoding technique and obtaining an output data. The memory size of the output data may be proportional to the memory size of the input data.
摘要翻译：本公开涉及用于在改进连接度草图的同时改变数据流处理中的存储器大小的方法，系统和计算机可读介质。本公开的实施例可以通过使用错误编码技术来编码输入数据以产生编码数据，其中编码数据导致修改的存储器大小; 使用一组参数生成主机连接，并在编码数据上应用反向草图技术，以便获得估计的编码数据; 并且在使用解码技术建立主机连接性并获得输出数据之后对编码数据进行解码。输出数据的存储器大小可以与输入数据的存储器大小成比例。

4. 发明授权

US09590807B2 Identity based public key cryptosystem 有权
标题翻译：基于身份的公钥密码系统
公开(公告)号：US09590807B2
公开(公告)日：2017-03-07
申请号：US14228396
申请日：2014-03-28
申请人： TATA CONSULTANCY SERVICES LIMITED
发明人： Ravishankara Shastry , Barkur Suryanarayana Adiga , Rajan Mindigal Alasingara Bhattachar , Shivraj Vijayshankar Lokamathe , Balamuralidhar Purushotaman
IPC分类号： H04L9/08 , H04L9/30
CPC分类号： H04L9/0825 , H04L9/0866 , H04L9/3013 , H04L9/302
摘要： A method for generating cryptographic parameters comprises generating a private_IGTABLE based on an Euler totient function of a composite number (φ(n)), where the private_IGTABLE includes a plurality of random numbers (x). Further, a public_IGTABLE based on the private_IGTABLE, a composite number (n), and a group generator element (g) is generated, where the public_IGTABLE includes a corresponding modular exponentiation under modulo n for each of the plurality of random numbers with g as base. Further, a public key of a user is computed based on the public_IGTABLE, an identity number (ID) corresponding to the user, and n. Further, a secret key of the user is generated based on the ID, a master private key, the φ(n), and the private_IGTABLE. Thereafter, the cryptographic parameters are provided to the user for performing encryption and decryption, where the cryptographic parameters include at least one of the ID, the public key, and the secret key.
摘要翻译：一种用于生成加密参数的方法包括：基于复合数（E（n））的欧拉方法函数生成private_IGTABLE，其中private_IGTABLE包括多个随机数（x）。此外，生成基于private_IGTABLE，复合数（n）和组生成元素（g）的public_IGTABLE，其中public_IGTABLE包括对于多个随机数中的每一个的模n的相应模幂，其中g为基。此外，基于public_IGTABLE，与用户对应的身份号（ID）和n来计算用户的公开密钥。此外，基于ID，主专用密钥，φ（n）和private_IGTABLE生成用户的秘密密钥。此后，将加密参数提供给用户进行加密和解密，其中密码参数包括ID，公开密钥和秘密密钥中的至少一个。

5. 发明授权

US09509511B2 Identity based encryption 有权
标题翻译：基于身份的加密
公开(公告)号：US09509511B2
公开(公告)日：2016-11-29
申请号：US14477226
申请日：2014-09-04
申请人： TATA CONSULTANCY SERVICES LIMITED
发明人： Rajan Mindigal Alasingara Bhattachar , Barkur Suryanarayana Adiga , Shivraj Vijayshankar Lokamathe , Ravishankara Shastry , Balamuralidhar Purushothaman
IPC分类号： H04L9/30 , G09C1/00
CPC分类号： H04L9/3073 , G09C1/00 , H04L9/30 , H04L63/0428 , H04L63/0442 , H04L2209/805 , H04W12/02
摘要： Method and system for identity based encryption are described. The method comprises obtaining public parameters and a public key set from a central server, where the public parameters include a friendly prime, a torsion group prime order, an super-singular elliptic curve, a first torsion group, a pre-computed Tate pairing value, a first elliptic curve point and a second elliptic curve point, and a distortion map, and where the pre-computed Tate pairing value is generated by the central server. Further, a receiver key set of elliptic curve points based on a receiver identity of a receiver is determined, where the receiver key set is a subset of the public key set. Further a receiver public key based on the receiver key set is computed. Further, the data is encrypted using the Tate pairing value and an encryption component, wherein the encryption component is computed based on the receiver public key set.
摘要翻译：描述用于基于身份的加密的方法和系统。该方法包括从中央服务器获取公共参数和公共密钥集，其中公共参数包括友好素数，扭转组素数次序，超奇异椭圆曲线，第一扭转组，预先计算的Tate配对值，第一椭圆曲线点和第二椭圆曲线点，以及失真图，并且其中预先计算的Tate配对值由中央服务器生成。此外，确定基于接收机的接收机标识的接收机密钥组的椭圆曲线点，其中接收机密钥集是公钥集的子集。此外，计算基于接收器密钥集合的接收器公钥。此外，使用Tate配对值和加密组件对数据进行加密，其中基于接收者公钥集来计算加密组件。

6. 发明授权

US09473178B2 System and method for varying memory size in a data stream processing 有权
标题翻译：用于在数据流处理中改变存储器大小的系统和方法
公开(公告)号：US09473178B2
公开(公告)日：2016-10-18
申请号：US14281142
申请日：2014-05-19
申请人： Tata Consultancy Services Limited
发明人： Addagadde Subramanya Ravishankara Shastry , Barkur Suryanarayana Adiga , Mariswamy Girish Chandra
IPC分类号： H03M13/03 , H03M13/35 , H04N21/2343 , H04N21/2383 , H03M13/13 , H03M13/15 , H03M13/23
CPC分类号： H03M13/353 , H03M13/136 , H03M13/1515 , H03M13/152 , H03M13/23 , H04N21/23439 , H04N21/2383
摘要： The present disclosure relates to methods, systems, and computer-readable media for varying a memory size in a data stream processing while improving a connection degree sketch. Embodiments of the present disclosure may encode an input data by using an error coding technique to produce an encoded data, wherein the encoded data results in a modified memory size; generate a host connectivity using a set of parameters and applying a reverse sketching technique over the encoded data in order to obtain estimated encoded data; and decode the encoded data after the host connectivity is established using a decoding technique and obtaining an output data. The memory size of the output data may be proportional to the memory size of the input data.
摘要翻译：本公开涉及用于在改进连接度草图的同时改变数据流处理中的存储器大小的方法，系统和计算机可读介质。本公开的实施例可以通过使用错误编码技术来编码输入数据以产生编码数据，其中编码数据导致修改的存储器大小; 使用一组参数生成主机连接，并在编码数据上应用反向草图技术，以便获得估计的编码数据; 并且在使用解码技术建立主机连接性并获得输出数据之后对编码数据进行解码。输出数据的存储器大小可以与输入数据的存储器大小成比例。

7. 发明申请

US20150372997A1 DEVICE, SYSTEM AND METHOD PROVIDING DATA SECURITY AND ATTRIBUTE BASED DATA ACCESS IN PARTICIPATORY SENSING 有权
标题翻译：设备，系统和方法提供数据安全性和基于参与的传感数据访问
公开(公告)号：US20150372997A1
公开(公告)日：2015-12-24
申请号：US14737605
申请日：2015-06-12
申请人： Tata Consultancy Services Limited
发明人： Shivraj Vijayshankar LOKAMATHE , Rajan Mindigal Alasingara Bhattachar , Barkur Suryanarayana Adiga , Meena Singh Dilip Thakur , Balamuralidhar Purushothaman
IPC分类号： H04L29/06 , H04L9/30
CPC分类号： H04L63/062 , H04L9/0847 , H04L9/088 , H04L9/30 , H04L9/3073 , H04L63/0428 , H04L63/06
摘要： Disclosed are devices, systems, and methods for securing data using attribute based data access. The data may correspond to a sensory environment, and the data is secured at the device. The device secures the data by segmenting the data into number of segments and defining an access policy, further submitting the access policy to a PKG of system for generating Access Tree having attributes at different level for accessing the data. These Access Trees are securely stored on the device using IBE mechanism. Further, the data after being secured, is uploaded to a system for analysis. At the system, an access request may be received for accessing the data. The access request further includes a request attribute, whereby the system verifies if the attribute satisfies the Access Policy. If the verification is positive, an access may be provided to the data accessor for accessing the data.
摘要翻译：公开了使用基于属性的数据访问来保护数据的设备，系统和方法。数据可以对应于感觉环境，并且数据在设备处被保护。设备通过将数据分割成段数并定义访问策略来保护数据，进一步将访问策略提交给系统的PKG，以生成具有用于访问数据的不同级别的属性的访问树。这些访问树使用IBE机制安全地存储在设备上。此外，保护后的数据被上传到系统进行分析。在系统中，可以接收访问数据的访问请求。访问请求还包括请求属性，由此系统验证该属性是否满足访问策略。如果验证是肯定的，则可以向数据访问器提供访问以访问数据的访问。

8. 发明申请

US20150256542A1 USER AUTHENTICATION 审中-公开
标题翻译：用户认证
公开(公告)号：US20150256542A1
公开(公告)日：2015-09-10
申请号：US14639819
申请日：2015-03-05
申请人： Tata Consultancy Services Limited
发明人： Rajan Mindigal Alasingara Bhattachar , Shivraj Vijayshankar Lokamathe , Barkur Suryanarayana Adiga , Balamuralidhar Purushothaman , Sitaram Venkata Chamarty
IPC分类号： H04L29/06 , G06F21/31
CPC分类号： H04L63/0884 , G06F21/31 , H04L9/0866 , H04L9/3066 , H04L9/3228 , H04L9/3297 , H04L63/0838 , H04L2463/061 , H04L2463/121
摘要： Method and system for user authentication are described. The method comprises receiving an authentication code from an application server seeking authentication of the user. Further, a private key of the user is computed in real time based on a user identity (ID) of the user and a master secret key of the PKG. The method further comprises, ascertaining a verification code based on the private key of the user and a verification timestamp, wherein the verification timestamp indicates a time at which the ascertaining of the verification code was initiated. Further, the authentication code is compared with the verification code. Further, the method comprises authenticating the user based on the comparison.
摘要翻译：描述用户认证的方法和系统。该方法包括从应用服务器接收用户认证的认证码。此外，基于用户的用户身份（ID）和PKG的主密钥，实时地计算用户的私钥。该方法还包括：基于用户的私钥和验证时间戳来确定验证码，其中验证时间戳指示确定验证码的时间。此外，认证码与验证码进行比较。此外，该方法包括基于比较来验证用户。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式