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1. 发明授权

US07397917B2 Method and apparatus for generating a cryptographic key 有权
标题翻译：用于生成加密密钥的方法和装置
公开(公告)号：US07397917B2
公开(公告)日：2008-07-08
申请号：US10613750
申请日：2003-07-03
申请人： Liqun Chen , David Soldera , Keith Alexander Harrison
发明人： Liqun Chen , David Soldera , Keith Alexander Harrison
IPC分类号： H04K1/00 , H04L9/00 , H04L9/30
CPC分类号： H04L9/3013 , H04L9/3073 , H04L9/321
摘要： A method and apparatus are provided for generating a cryptographic key from multiple data sets each related to a respective association of a trusted party and user identity. The cryptographic key is, for example, one of an encryption key, a decryption key, a signature key and a verification key, and is preferably generated by applying Tate or Weil bilinear mappings to the data sets. At least two of the data sets may relate to different user identities and/or different trusted authorities. Where multiple trusted authorities are involved, these authorities may be associated with different elements to which the bilinear mapping can be applied, each trusted authority having an associated public key formed from its associated element and a secret of that trusted authority.
摘要翻译：提供了一种方法和装置，用于从与受信任方和用户身份的相应关联相关联的多个数据集中生成密码密钥。加密密钥例如是加密密钥，解密密钥，签名密钥和验证密钥之一，并且优选地通过将Tate或Weil双线性映射应用于数据集来生成。数据集中的至少两个可以涉及不同的用户身份和/或不同的可信权限。在涉及多个受信任的机构的情况下，这些权限可以与可以应用双线性映射的不同的元素相关联，每个受信任的机构具有由其相关联的元素形成的相关联的公共密钥和该信任授权的秘密。

2. 发明授权

US07650494B2 Method and apparatus for use in relation to verifying an association between two parties 有权
标题翻译：用于验证双方之间关联的方法和装置
公开(公告)号：US07650494B2
公开(公告)日：2010-01-19
申请号：US10613522
申请日：2003-07-02
申请人： Liqun Chen , Keith Alexander Harrison , David Soldera
发明人： Liqun Chen , Keith Alexander Harrison , David Soldera
IPC分类号： H04L9/00
CPC分类号： G06F7/725 , H04L9/3013 , H04L9/3073 , H04L9/321
摘要： A first party has a first and a second cryptographic key. A second party has a third and a fourth cryptographic key, the fourth cryptographic key being derived from the first and third cryptographic keys thereby providing an association between the parties. To enable a third party to verify the existence of an association between the first and second parties, the second party generates a number that in association with the second cryptographic key, the third cryptographic key and the fourth cryptographic key define a first cryptographic parameter, a second cryptographic parameter and a third cryptographic parameter respectively. By using these parameters and the second and third cryptographic keys, the third party can verify if the first and second parties are associated.
摘要翻译：第一方具有第一和第二密码密钥。第二方具有第三和第四密码密钥，第四密码密钥从第一和第三密码密钥导出，从而提供双方之间的关联。为了使第三方能够验证第一方和第二方之间的关联的存在，第二方生成与第二密码密钥相关联的号码，第三密码密钥和第四加密密钥定义第一密码参数，第二密码参数和第三密码参数。通过使用这些参数和第二和第三密码密钥，第三方可以验证第一方和第二方是否相关联。

3. 发明授权

US07263191B2 Method and apparatus for encrypting data 有权
标题翻译：用于加密数据的方法和装置
公开(公告)号：US07263191B2
公开(公告)日：2007-08-28
申请号：US10270040
申请日：2002-10-11
申请人： Liqun Chen , Keith Alexander Harrison
发明人： Liqun Chen , Keith Alexander Harrison
IPC分类号： H04L9/00
CPC分类号： H04L63/0457 , H04L9/3093 , H04L2209/08
摘要： A method for encrypting data comprising dividing a first data set into a second data set and a third data set; deriving a first value using the second data set as an input into a polynomial equation; deriving a second value using the third data set as an input into the polynomial equation; deriving a first encryption key associated with a first party; deriving a second encryption key associated with a second party; encrypting the first value with the first encryption key; encrypting the second value with the second encryption key.
摘要翻译：一种用于加密数据的方法，包括将第一数据集划分成第二数据集和第三数据集; 使用所述第二数据组作为输入将多项式方程中的第一值导出; 使用所述第三数据集作为输入到所述多项式方程中得到第二值; 导出与第一方相关联的第一加密密钥; 导出与第二方相关联的第二加密密钥; 用第一加密密钥加密第一值; 用第二加密密钥加密第二值。

4. 发明授权

US08589679B2 Identifier-based signcryption with two trusted authorities 有权
标题翻译：与两个受信任的机构基于标识符的签密
公开(公告)号：US08589679B2
公开(公告)日：2013-11-19
申请号：US11182527
申请日：2005-07-14
申请人： Liqun Chen , Keith Alexander Harrison , John Malone-Lee
发明人： Liqun Chen , Keith Alexander Harrison , John Malone-Lee
IPC分类号： H04L29/06
CPC分类号： H04L9/3247 , H04L9/3073 , H04L9/321 , H04L2209/72
摘要： Identifier-based signcryption methods and apparatus are disclosed both for signing and encrypting data, and for decrypting and verifying data. The signcryption methods use computable bilinear mappings and can be based, for example, on Weil or Tate pairings. A message sender associated with a first trusted authority carries out integrated signing/encryption processes to send a signed, encrypted message to an intended recipient associated with a second trusted authority. The recipient then carries out integrated decryption/verification processes to recover the original message and verify its origin.
摘要翻译：公开了基于标识符的签密方法和装置，用于签名和加密数据，以及用于解密和验证数据。 Signcryption方法使用可计算的双线性映射，并且可以基于例如Weil或Tate配对。与第一受信任机构相关联的消息发送者执行集成的签名/加密过程，以将签名的加密消息发送到与第二受信任机构相关联的预期接收者。然后，接收者执行综合解密/验证过程，以恢复原始消息并验证其来源。

5. 发明授权

US07864958B2 Quantum key distribution method and apparatus 有权
标题翻译：量子密钥分发方法及装置
公开(公告)号：US07864958B2
公开(公告)日：2011-01-04
申请号：US11454632
申请日：2006-06-16
申请人： Keith Alexander Harrison , William John Munro , Liqun Chen
发明人： Keith Alexander Harrison , William John Munro , Liqun Chen
IPC分类号： H04K1/00
CPC分类号： H04L9/0858 , G06F7/588
摘要： A quantum key distribution (QKD) method involves the sending of random data from a QKD transmitter to a QKD receiver over a quantum signal channel, and the QKD transmitter and receiver respectively processing the data transmitted and received over the quantum signal channel in order to seek to derive a common random data set. This processing is effected with the aid of messages exchanged between QKD transmitter and receiver over an insecure classical communication channel. The processing concludes with a check, effected by an exchange of authenticated messages over the classical communication channel, that the QKD transmitter and receiver have derived the same random data set. At least some of the other messages exchanged during processing are exchanged without authentication and integrity checking. A QKD transmitter and QKD receiver are also disclosed.
摘要翻译：量子密钥分配（QKD）方法涉及通过量子信道从QKD发射机向QKD接收机发送随机数据，并且QKD发射机和接收机分别处理通过量子信号信道发送和接收的数据，以便寻找以得出公共随机数据集。借助于在不安全的经典通信信道上在QKD发射机和接收机之间交换的消息来实现该处理。该处理结束于通过经典通信信道的认证消息交换实现的检验，即QKD发射机和接收机已经导出相同的随机数据集。在处理期间交换的至少一些其他消息被交换，而不进行认证和完整性检查。还公开了QKD发射机和QKD接收机。

6. 发明授权

US07380138B2 Cryptographic method and apparatus 有权
标题翻译：密码方法和装置
公开(公告)号：US07380138B2
公开(公告)日：2008-05-27
申请号：US10831350
申请日：2004-04-22
申请人： Liqun Chen , Keith Alexander Harrison
发明人： Liqun Chen , Keith Alexander Harrison
IPC分类号： G06F1/24
CPC分类号： H04L9/3236 , H04L9/083 , H04L9/0847
摘要： First data to be sent by a first party to a second party is encrypted using an encryption key that is formed using at least a hash value generated by a keyed hash of at least one condition that typically serves as an identifier of an intended recipient of the first data. The encrypted first data is provided to a data recipient who requests a decryption key from the trusted party. The trusted party is responsible for verifying that the recipient meets the specified conditions before providing the decryption key. A valid decryption key is only provided if the correct conditions have been supplied to the trusted party.
摘要翻译：将要由第一方发送给第二方的第一数据使用至少由通常用作作为第二方的预期接收者的标识符的至少一个条件的密钥哈希生成的散列值形成的加密密钥进行加密第一个数据。加密的第一数据被提供给从可信方请求解密密钥的数据接收者。受信任方负责在提供解密密钥之前验证接收者是否满足指定的条件。仅当向可信方提供正确的条件时，才提供有效的解密密钥。

7. 发明授权

US07305093B2 Method and apparatus for securely transferring data 有权
标题翻译：用于安全传输数据的方法和装置
公开(公告)号：US07305093B2
公开(公告)日：2007-12-04
申请号：US10623008
申请日：2003-07-17
申请人： Keith Alexander Harrison , Liqun Chen
发明人： Keith Alexander Harrison , Liqun Chen
IPC分类号： H04L9/00
CPC分类号： H04L9/3073 , H04L9/083 , H04L2209/56
摘要： A method and apparatus is provided for securely transferring first and second data from a user to first and second parties respectively. More particularly, the user encrypts the first data using a first encryption key associated with the first party, and then encrypts the second data using, as encryption parameters, both public data of the first party and third data comprising the encrypted first data. The third data is then provided, preferably via the second party, to the first party, and the encrypted second data is provided to the second party. The first party uses a first decryption key to decrypt the encrypted first data, as provided to the first party in the third data, whereby to recover the first data. The first party also uses the third data, along with private data related to the aforesaid public data, to generate a second decryption key which is then provided to the second party to enable it to decrypt the encrypted second data.
摘要翻译：提供了一种用于将第一和第二数据从用户安全地传送到第一和第二方的方法和装置。更具体地，用户使用与第一方相关联的第一加密密钥来加密第一数据，然后使用第一方的公共数据和包括加密的第一数据的第三数据作为加密参数来加密第二数据。然后，优选地经由第二方将第三数据提供给第一方，并且将加密的第二数据提供给第二方。第一方使用第一解密密钥来解密加密的第一数据，如在第三数据中提供给第一方，由此恢复第一数据。第一方还使用第三数据以及与上述公共数据相关的私有数据来生成第二解密密钥，然后将其提供给第二方以使其能够解密加密的第二数据。

8. 发明授权

US07929691B2 Use of bilinear mappings in cryptographic applications 有权
标题翻译：在加密应用程序中使用双线性映射
公开(公告)号：US07929691B2
公开(公告)日：2011-04-19
申请号：US11316412
申请日：2005-12-21
申请人： Keith Alexander Harrison , Liqun Chen , Guido Marco Bertoni , Pasqualina Fragneto , Gerardo Pelosi
发明人： Keith Alexander Harrison , Liqun Chen , Guido Marco Bertoni , Pasqualina Fragneto , Gerardo Pelosi
IPC分类号： H04K1/00
CPC分类号： H04L9/08 , H04L9/3073 , H04L9/321 , H04L2209/80 , H04W12/06
摘要： Cryptographic methods are known that involve the computation of a non-degenerate bilinear mapping of first and second elements one of which comprises a secret of a first entity. For a mapping implemented as, for example, a Tate pairing, the mapping is computable by applying a predetermined function to the first and second elements and then exponentiating the result with a known exponent. Improvements in respect of computational loading, size of output, and security are enabled for the first party by arranging for the first entity to carry out only part of the mapping, a second entity being used to complete computation of the mapping. Cryptographic applications using these improvements are also disclosed.
摘要翻译：已知密码学方法涉及计算第一和第二元素的非简并双线性映射，其中之一包括第一实体的秘密。对于实现为例如Tate配对的映射，可以通过将预定函数应用于第一和第二元素然后用已知指数对结果进行指数来计算该映射。通过安排第一实体仅执行部分映射，使第一方能够进行关于计算负载，输出大小和安全性的改进，第二实体用于完成映射的计算。还公开了使用这些改进的加密应用。

9. 发明授权

US07986778B2 Cryptographic method and apparatus 有权
标题翻译：密码方法和装置
公开(公告)号：US07986778B2
公开(公告)日：2011-07-26
申请号：US11166921
申请日：2005-06-23
申请人： Keith Alexander Harrison , Liqun Chen
发明人： Keith Alexander Harrison , Liqun Chen
IPC分类号： H04K1/00
CPC分类号： H04L9/3073 , H04L9/321 , H04L9/3247 , H04L2209/04
摘要： A cryptographic method and apparatus is provided in which an identifier-based encryption process is used to encrypt a message with an identifier string that specifies conditions to be checked by a trusted entity before providing a decrypted form of the encrypted message, or enabling its decryption. A further trusted entity is used to verify the identity of the message sender as indicated by a further identifier string, and to provide the sender with a secret key that the sender uses to generate complimentary signature components. These signature components are sent along with the encrypted message and are used, along with other data including the first identifier string and a public key of the further trusted entity, to authenticate the identity of the message sender.
摘要翻译：提供了一种加密方法和装置，其中使用基于标识符的加密过程来加密具有标识符串的消息，所述标识符字符串在提供加密消息的解密形式之前指定由受信任实体检查的条件，或使其能够进行解密。另一受信任的实体用于验证由另外的标识符字符串指示的消息发送者的身份，并向发送者提供发送者用于生成互补签名组件的秘密密钥。这些签名组件与加密消息一起发送，并与包括第一标识符串和另外可信实体的公开密钥的其他数据一起使用，以验证消息发送者的身份。

10. 发明授权

US07801302B2 Cryptographic method and apparatus 有权
标题翻译：密码方法和装置
公开(公告)号：US07801302B2
公开(公告)日：2010-09-21
申请号：US11150623
申请日：2005-06-10
申请人： Keith Alexander Harrison , Liqun Chen
发明人： Keith Alexander Harrison , Liqun Chen
IPC分类号： H04K1/00 , H04L9/00 , H04L29/06 , H04L9/32 , G06F17/00 , G07F7/10 , G07F7/06 , H04L9/08
CPC分类号： H04L9/3013 , H04L9/321 , H04L2209/046
摘要： A cryptographic method and apparatus is provided in which a first party receives and modifies a public key for which there exists a corresponding private key held by a second party. The public key is modified by exponentiating at least one element of the received public key using as exponent a hash of a string that comprises information concerning at least one action to be taken by the second party. The string is made available to the second party to enable the latter to modify its private key to compliment the modified public key. In a preferred embodiment, the method and apparatus are applied to the use of the ElGamal encryption/decryption scheme, with the second party acting as a trusted authority that only releases the decrypted message to a third party if the latter satisfies an identity condition specified in the string.
摘要翻译：提供了一种加密方法和装置，其中第一方接收并修改存在由第二方保存的对应私钥的公钥。通过使用作为指数的字符串的散列来指示所接收的公钥的至少一个元素来修改公钥，该字符串的散列包括关于第二方要采取的至少一个动作的信息。该字符串可用于第二方，以使后者修改其私钥以补充修改的公钥。在优选实施例中，该方法和装置被应用于ElGamal加密/解密方案的使用，其中第二方充当信任机构，只有当解密消息满足以下规定的身份条件时才将解密的消息释放到第三方：字符串。

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