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1. 发明授权

US10594472B2 Hybrid fully homomorphic encryption (F.H.E.) systems 有权
公开(公告)号：US10594472B2
公开(公告)日：2020-03-17
申请号：US15556575
申请日：2016-03-04
申请人： Jintai Ding
发明人： Jintai Ding
IPC分类号： H04L9/00 , H04L29/08 , G06F21/57 , H04L9/14 , H04L9/30 , H04L9/32
摘要： Using a secure hardware or other form secure elements, where we securely implement the decryption and then encryption function to perform the re-encryption function, we build a hybrid fully homomorphic encryption system, where the bootstrap step is replaced the re-encryption function in the hardware module. This new hybrid system are very efficient because the re-encryption is much more efficient than the bootstrap function, which is the main bottleneck in terms of computations in FHE. In such a system, we make the system secure by making this hardware module secure using all or some of known techniques including temper proof, self-destruction and etc. This module can be controlled by either the server or the client or jointly.

2. 发明授权

US09246675B2 Cryptographic systems using pairing with errors 有权
标题翻译：使用配对错误的加密系统
公开(公告)号：US09246675B2
公开(公告)日：2016-01-26
申请号：US14491992
申请日：2013-04-11
申请人： Jintai Ding
发明人： Jintai Ding
IPC分类号： H04L9/08 , H04L9/14 , H04L9/30
CPC分类号： H04L9/0819 , H04L9/083 , H04L9/0847 , H04L9/14 , H04L9/3073 , H04L9/3093 , H04L2209/24 , H04L2209/34
摘要： Using the same mathematical principle of paring with errors, which can be viewed as an extension of the idea of the LWE problem, this invention gives constructions of a new key exchanges system, a new key distribution system and a new identity-based encryption system. These new systems are efficient and have very strong security property including provable security and resistance to quantum computer attacks.
摘要翻译：本发明使用与错误对照的相同数学原理，可以被视为LWE问题概念的扩展，本发明提供了新的密钥交换系统，新的密钥分配系统和新的基于身份的加密系统的构造。这些新系统是高效的，具有非常强大的安全性，包括可靠的安全性和抵抗量子计算机攻击。

3. 发明授权

US11290273B2 Multivariate digital signature schemes based on HFEv- and new applications of multivariate digital signature schemes for white-box encryption 有权
公开(公告)号：US11290273B2
公开(公告)日：2022-03-29
申请号：US15562034
申请日：2016-03-25
申请人： Jintai Ding
发明人： Jintai Ding
IPC分类号： H04L9/30 , H04L9/32
摘要： We present new designs to choose the parameter sets for more efficient HFEv-based signature schemes. The key method is to reduce the degree of the central HFEv-polynomial while, at the same time, increasing the number of Vinegar variables and Minus equations. The new design speeds up the signature generation process by two orders of magnitude (hundreds of times) compared to QUARTZ. We present also new methods to use multivariate signature schemes to build a white box encryption scheme. This technique is applicable to all existing multivariate signature designs including the HFEV-design and the improvements.

4. 发明申请

US20130058479A1 HIERARCHICAL GROUP KEY MANAGEMENT APPROACH BASED ON LINEAR GEOMETRY 有权
标题翻译：基于线性几何的分层组关键管理方法
公开(公告)号：US20130058479A1
公开(公告)日：2013-03-07
申请号：US13386362
申请日：2010-05-27
申请人： Shaohua Tang , Yujun Liang , Jintai Ding
发明人： Shaohua Tang , Yujun Liang , Jintai Ding
IPC分类号： H04L9/00
CPC分类号： H04L9/0836
摘要： A hierarchical group key management approach based on linear geometry is disclosed. The approach includes the following steps: step 1, the central controller selects a finite field F, a mapping parameter f and a constant N for use in the group; the central controller selects a N-dimensional private vector for each subgroup; step 2, the central controller selects a mapping parameter r and maps the private vector to a new set of vectors in the vector space; step 3, the central controller selects a subgroup key for each subgroup and constructs n linear systems of equations, and solves the solution of the linear equation systems, that is, the public vector, and the n sets of public vectors form a public vector; the public vector and the mapping parameter r are broadcasted or multicasted by the central controller to all the subgroup controllers; step 4, each subgroup controller solves the confidential vector of its own, and a set of key vectors is obtained by linear transformation of the confidential vector and the public matrix. This invention is simple and flexible, and is effective against brute-force attacks.
摘要翻译：公开了一种基于线性几何的分层组密钥管理方法。该方法包括以下步骤：步骤1，中央控制器选择有限域F，映射参数f和常数N用于组中; 中央控制器为每个子组选择一个N维私人向量; 步骤2，中央控制器选择映射参数r，并将私有向量映射到向量空间中的一组新的向量; 步骤3，中央控制器为每个子组选择一个子组密钥，并构造n个线性方程组，并求解线性方程组解的解，即公共向量，n组公共向量形成一个公共向量; 公共向量和映射参数r由中央控制器广播或组播到所有子组控制器; 步骤4，每个子组控制器解决其自身的机密向量，通过机密向量和公共矩阵的线性变换获得一组关键向量。本发明简单灵活，有效打击暴力攻击。

5. 发明申请

US20120263303A1 GROUP KEY MANAGEMENT APPROACH BASED ON LINEAR GEOMETRY 有权
标题翻译：基于线性几何的组密钥管理方法
公开(公告)号：US20120263303A1
公开(公告)日：2012-10-18
申请号：US13055380
申请日：2009-12-24
申请人： Shaohua Tang , Jintai Ding , Guangdong Yang , Yujun Liang
发明人： Shaohua Tang , Jintai Ding , Guangdong Yang , Yujun Liang
IPC分类号： H04L9/08
CPC分类号： H04L9/0833 , H04L2209/08
摘要： A group key management approach based on linear geometry is disclosed. The approach includes the following steps: step 1: a group controller selects a mapping f and a finite field F; each group member selects a m-dimensional private vector over the finite field F, and sends it to the group controller via secure channel; step 2: the group controller selects a mapping parameter in the finite field F randomly, and maps the private vectors of all the group members into a new set of vectors by using the mapping f according to the mapping parameter; step 3: the group controller selects a random number k in the finite field F as a group key, and constructs a system of linear equations by using the new set of vectors and the group key; the group controller computes the central vector, and sends the central vector and the mapping parameter to all the group members via open channel; step 4: after the group members receive the central vector and the mapping parameter, the private vector of each group member is mapped to a new vector in a vector space according to the mapping parameter, and the group key is obtained by calculating the inner product of the new vector and the central vector. This invention requires small memory and little computation, has high security property, and is effective against brute-force attacks.
摘要翻译：公开了一种基于线性几何的组密钥管理方法。该方法包括以下步骤：步骤1：组控制器选择映射f和有限域F; 每个组成员在有限域F上选择m维私人向量，并通过安全信道将其发送到组控制器; 步骤2：组控制器随机选择有限域F中的映射参数，并根据映射参数通过映射f将所有组成员的私有向量映射到新的向量集合; 步骤3：组控制器选择有限域F中的随机数k作为组密钥，并通过使用新的向量集合和组密钥构建线性方程组; 组控制器计算中心向量，并通过开放信道将中心向量和映射参数发送给所有组成员; 步骤4：组成员接收到中心向量和映射参数后，根据映射参数将每个组成员的私有向量映射到向量空间中的新向量，并通过计算内部产物获得组密钥的新向量和中心向量。本发明需要小的记忆和少量的计算，具有很高的安全性能，并且有效抵抗暴力攻击。

6. 发明授权

US07961876B2 Method to produce new multivariate public key cryptosystems 失效
标题翻译：生成新的多变量公钥密码系统的方法
公开(公告)号：US07961876B2
公开(公告)日：2011-06-14
申请号：US11323597
申请日：2005-12-30
申请人： Jintai Ding
发明人： Jintai Ding
IPC分类号： H04K1/00 , H04L9/00 , H04L9/30
CPC分类号： H04L9/3093 , H04L2209/08
摘要： Multivariate public key cryptosystems (MPKC) are public key cryptosystems, whose public key are a set of multivariate polynomials over a finite field (or ring). MPKC can be used for encryption, authentication and signatures. The invention develops three new methods that could be applied to a multivariate public key cryptosystem to produce new multivariate public key cryptosystems that are better in terms of security and efficiency. These three methods are called the internal perturbation plus (IPP), the enhanced internal perturbation (EIP) and the multi-layer Oil-Vinegar construction (MOVC). These three methods can be combined in any 2 or all 3 to be applied to a multivariate public key cryptosystem to produce new multivariate public key cryptosystems as well.
摘要翻译：多变量公钥密码系统（MPKC）是公钥密码系统，其公钥是有限域（或环）上的一组多元多项式。 MPKC可用于加密，认证和签名。本发明开发了三种可以应用于多变量公钥密码系统的新方法，以产生在安全性和效率方面更好的新型多变量公钥密码系统。这三种方法称为内部扰动加（IPP），增强型内部扰动（EIP）和多层油醋结构（MOVC）。这三种方法可以在任何2或全部3中组合，以应用于多变量公钥密码系统，以产生新的多变量公钥密码系统。

7. 发明授权

US11570003B2 Quantumproof blockchain 有权
公开(公告)号：US11570003B2
公开(公告)日：2023-01-31
申请号：US16758300
申请日：2018-10-04
申请人： Jintai Ding
发明人： Jintai Ding , Yangxing Ding
IPC分类号： H04L9/32 , G06Q20/40 , H04L9/30 , G06Q20/06 , G06Q20/38 , H04L9/00 , H04L9/08 , G06N10/00
摘要： Bitcoins and the underlying blockchain technology are one of the main innovations in building decentralized applications. The effects of quantum computing on this technology are analyzed in general. Provided herein are effective solutions to address security vulnerabilities in a blockchain-based system that can be exploited by a quantum attacker.

8. 发明申请

US20150067336A1 New Cryptographic Systems Using Pairing with Errors 有权
标题翻译：使用与错误配对的新加密系统
公开(公告)号：US20150067336A1
公开(公告)日：2015-03-05
申请号：US14491992
申请日：2013-04-11
申请人： jintai ding
发明人： Jintai Ding
IPC分类号： H04L9/08 , H04L9/14
CPC分类号： H04L9/0819 , H04L9/083 , H04L9/0847 , H04L9/14 , H04L9/3073 , H04L9/3093 , H04L2209/24 , H04L2209/34
摘要： Using the same mathematical principle of paring with errors, which can be viewed as an extension of the idea of the LWE problem, this invention gives constructions of a new key exchanges system, a new key distribution system and a new identity-based encryption system. These new systems are efficient and have very strong security property including provable security and resistance to quantum computer attacks.
摘要翻译：本发明使用与错误对照的相同数学原理，可以被视为LWE问题概念的扩展，本发明提供了新的密钥交换系统，新的密钥分配系统和新的基于身份的加密系统的构造。这些新系统是高效的，具有非常强大的安全性，包括可靠的安全性和抵抗量子计算机攻击。

9. 发明授权

US08848921B2 Group key management approach based on linear geometry 有权
标题翻译：基于线性几何的组密钥管理方法
公开(公告)号：US08848921B2
公开(公告)日：2014-09-30
申请号：US13055380
申请日：2009-12-24
申请人： Shaohua Tang , Jintai Ding , Guangdong Yang , Yujun Liang
发明人： Shaohua Tang , Jintai Ding , Guangdong Yang , Yujun Liang
IPC分类号： H04L29/06 , G06F21/00 , H04L9/08
CPC分类号： H04L9/0833 , H04L2209/08
摘要： A group key management approach based on linear geometry is disclosed. The approach includes the following steps: step 1: a group controller selects a mapping f and a finite field F; each group member selects a m-dimensional private vector over the finite field F, and sends it to the group controller via secure channel; step 2: the group controller selects a mapping parameter in the finite field F randomly, and maps the private vectors of all the group members into a new set of vectors by using the mapping f according to the mapping parameter; step 3: the group controller selects a random number k in the finite field F as a group key, and constructs a system of linear equations by using the new set of vectors and the group key; the group controller computes the central vector, and sends the central vector and the mapping parameter to all the group members via open channel; step 4: after the group members receive the central vector and the mapping parameter, the private vector of each group member is mapped to a new vector in a vector space according to the mapping parameter, and the group key is obtained by calculating the inner product of the new vector and the central vector. This invention requires small memory and little computation, has high security property, and is effective against brute-force attacks.
摘要翻译：公开了一种基于线性几何的组密钥管理方法。该方法包括以下步骤：步骤1：组控制器选择映射f和有限域F; 每个组成员在有限域F上选择m维私人向量，并通过安全信道将其发送到组控制器; 步骤2：组控制器随机选择有限域F中的映射参数，并根据映射参数通过映射f将所有组成员的私有向量映射到新的向量集合; 步骤3：组控制器选择有限域F中的随机数k作为组密钥，并通过使用新的向量集合和组密钥构建线性方程组; 组控制器计算中心向量，并通过开放信道将中心向量和映射参数发送给所有组成员; 步骤4：组成员接收到中心向量和映射参数后，根据映射参数将每个组成员的私有向量映射到向量空间中的新向量，并通过计算内部产物获得组密钥的新向量和中心向量。本发明需要小的记忆和少量的计算，具有很高的安全性能，并且有效抵抗暴力攻击。

10. 发明申请

US20080013716A1 Method to produce new multivariate public key cryptosystems 失效
标题翻译：生成新的多变量公钥密码系统的方法
公开(公告)号：US20080013716A1
公开(公告)日：2008-01-17
申请号：US11323597
申请日：2005-12-30
申请人： Jintai Ding
发明人： Jintai Ding
IPC分类号： H04L9/30
CPC分类号： H04L9/3093 , H04L2209/08
摘要： Multivariate public key cryptosystems (MPKC) are public key cryptosystems, whose public key are a set of multivariate polynomials over a finite field (or ring). MPKC can be used for encryption, authentication and signatures. The invention develops three new methods that could be applied to a multivariate public key cryptosystem to produce new multivariate public key cryptosystems that are better in terms of security and efficiency. These three methods are called the internal perturbation plus (IPP), the enhanced internal perturbation (EIP) and the multi-layer Oil-Vinegar construction (MOVC). These three methods can be combined in any 2 or all 3 to be applied to a multivariate public key cryptosystem to produce new multivariate public key cryptosystems as well.
摘要翻译：多变量公钥密码系统（MPKC）是公钥密码系统，其公钥是有限域（或环）上的一组多元多项式。 MPKC可用于加密，认证和签名。本发明开发了三种可以应用于多变量公钥密码系统的新方法，以产生在安全性和效率方面更好的新型多变量公钥密码系统。这三种方法称为内部扰动加（IPP），增强型内部扰动（EIP）和多层油醋结构（MOVC）。这三种方法可以在任何2或全部3中组合，以应用于多变量公钥密码系统，以产生新的多变量公钥密码系统。

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