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1. 发明申请

US20050021973A1 Cryptographic method and apparatus 审中-公开
标题翻译：密码方法和装置
公开(公告)号：US20050021973A1
公开(公告)日：2005-01-27
申请号：US10831776
申请日：2004-04-22
申请人： Liqun Chen , Martin Sadler , Keith Harrison
发明人： Liqun Chen , Martin Sadler , Keith Harrison
IPC分类号： H04L9/08 , H04L9/30 , H04L9/32 , H04L9/00
CPC分类号： H04L9/3242 , H04L9/0847 , H04L9/302 , H04L9/3073
摘要： First data is encrypted by a first party using an encryption key string formed using at least a hash value of the first data, this hash value being either in clear or in an encrypted form enabling its recovery in clear by a trusted party. The encrypted first data and the encryption key string are made available to a second party which forwards the encryption key string to the trusted party. The trusted party carries out at least one check on the basis of data contained in the encryption key string and, if the checks are satisfactory, provides a decryption key to the second party. Where the encryption key string comprises the hash value of the first data in encrypted form, the trusted party will typically decrypt the hash value and pass it to the second party to enable the latter to check the integrity of the first data.
摘要翻译：第一数据由第一方使用至少使用第一数据的散列值形成的加密密钥串进行加密，该散列值是清楚的或以加密的形式使得其被可信方清除。加密的第一数据和加密密钥串可用于将加密密钥串转发给可信方的第二方。受信任方根据包含在加密密钥串中的数据执行至少一个检查，并且如果检查令人满意，则向第二方提供解密密钥。在加密密钥串包括加密形式的第一数据的哈希值的情况下，受信任方通常将对散列值进行解密，并将其传递给第二方，以使后者能够检查第一数据的完整性。

2. 发明申请

US20050005121A1 Cryptographic method and apparatus 有权
标题翻译：密码方法和装置
公开(公告)号：US20050005121A1
公开(公告)日：2005-01-06
申请号：US10831549
申请日：2004-04-22
申请人： Liqun Chen , Martin Sadler , Keith Harrison
发明人： Liqun Chen , Martin Sadler , Keith Harrison
IPC分类号： H04L9/08 , H04L9/30 , H04L9/00
CPC分类号： H04L9/3073 , 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 string formed using at least a hash value generated using second data and a secret, shared with a trusted party, that serves as identification of the first party. The second data comprises, for example, one or more conditions that serve as identifiers of the second party, and a hash-value element generated by hashing the first data. The encrypted first data and the encryption key string is made available to the second party which forwards the encryption key string to the trusted party with a request for the corresponding decryption key. The trusted party carries out at least one check on the basis of data contained in the encryption key string and, if this at least one check is satisfactory, provides a decryption key to the second party.
摘要翻译：要由第一方发送给第二方的第一数据使用至少使用第二数据生成的散列值形成的加密密钥串进行加密，以及用作第一方的标识的信任方共享的秘密。第二数据包括例如用作第二方的标识符的一个或多个条件以及通过对第一数据进行散列而产生的散列值元素。加密的第一数据和加密密钥串对第二方可用，该第二方通过对相应的解密密钥的请求将加密密钥串转发到信任方。可信方基于加密密钥串中包含的数据执行至少一个检查，并且如果该至少一个检查令人满意，则向第二方提供解密密钥。

3. 发明申请

US20110302421A1 Authentication Method And Apparatus Using One Time Pads 审中-公开
标题翻译：使用一次性垫的认证方法和装置
公开(公告)号：US20110302421A1
公开(公告)日：2011-12-08
申请号：US13202808
申请日：2010-01-20
申请人： Keith Harrison , Liqun Chen , William Munro
发明人： Keith Harrison , Liqun Chen , William Munro
IPC分类号： H04L9/32
CPC分类号： H04L9/3271 , H04L9/3228
摘要： An authentication method is provided between entities (10A; 10B) having matching one-time pads each with multiple OTP blocks. From the standpoint of a first one (10A) of the entities, the method involves sending (20S) a challenge that it has generated (20) by subjecting a first OTP block to a randomly-selected member of a first family of hashing functions. Each member of the first hashing-function family is associated with a respective member of a second family of hashing functions. On receiving back a response, the first entity (10A) tests (26) whether the response originates from the second entity (10B) by seeking a match between the response and a reference value generated (25) by subjecting a predetermined said OTP block to the member of the second hashing-function family that is associated with the member of the first hashing-function family used to generate the challenge.
摘要翻译：在具有匹配的具有多个OTP块的一次性焊盘的实体（10A; 10B）之间提供认证方法。从实体的第一个（10A）的观点来看，该方法涉及通过使第一OTP块经历第一散列函数族的随机选择的成员来发送（20S）已经生成的挑战（20）。第一散列函数系列的每个成员与第二系列散列函数的相应成员相关联。在接收到响应时，第一实体（10A）通过寻求通过使预定的所述OTP块对应于所述响应和参考值之间的匹配来生成（25）的匹配，来测试（26）响应是否源于第二实体（10B）与第一个哈希函数族的成员相关联的第二个散列函数族的成员用于产生挑战。

4. 发明申请

US20080183999A1 Method Of Updating Data 有权
标题翻译：更新数据的方法
公开(公告)号：US20080183999A1
公开(公告)日：2008-07-31
申请号：US12019237
申请日：2008-01-24
申请人： Helen Balinsky , Thomas Rathbone , Liqun Chen , Keith Harrison
发明人： Helen Balinsky , Thomas Rathbone , Liqun Chen , Keith Harrison
IPC分类号： G06F12/14
CPC分类号： G06F21/6209 , G06F21/606 , G06F21/77
摘要： A method of updating a data entry stored on a data storage unit, the data entry including data elements that are unique to the data storage unit and the data entry, the method comprising the steps of generating at the data storage unit an update request including the data entry for transmission to an authority authorised to update the data entry, extracting at the authority the unique data elements from the update request and verifying the authenticity of the data storage unit and data entry from the unique data elements, generating an updated data entry including a further data element unique to the updated data entry and derived from the updated data and transmitting the updated data entry to the data storage unit, and storing the updated data entry on the data storage unit.
摘要翻译：一种更新存储在数据存储单元上的数据条目的方法，所述数据条目包括对于数据存储单元和数据条目是唯一的数据元素，该方法包括以下步骤：在数据存储单元处生成包括用于传输给授权更新数据条目的机构的数据条目，从授权机构提取来自更新请求的唯一数据元素，并从唯一数据元素验证数据存储单元的真实性和数据输入，生成更新的数据条目，包括更新的数据条目唯一的另一个数据元素，并从更新的数据导出并将更新的数据条目发送到数据存储单元，并将更新的数据条目存储在数据存储单元上。

5. 发明申请

US20070014415A1 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：US20070014415A1
公开(公告)日：2007-01-18
申请号：US11454632
申请日：2006-06-16
申请人： Keith Harrison , William Munro , Liqun Chen
发明人： Keith Harrison , William Munro , Liqun Chen
IPC分类号： H04K1/00 , H04L9/00
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. 发明申请

US20060013389A1 Cryptographic method and apparatus 有权
标题翻译：密码方法和装置
公开(公告)号：US20060013389A1
公开(公告)日：2006-01-19
申请号：US11166921
申请日：2005-06-23
申请人： Keith Harrison , Liqun Chen
发明人： Keith Harrison , Liqun Chen
IPC分类号： H04L9/30
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。

7. 发明申请

US20050102523A1 Smartcard with cryptographic functionality and method and system for using such cards 审中-公开
标题翻译：具有加密功能的智能卡以及使用这种卡的方法和系统
公开(公告)号：US20050102523A1
公开(公告)日：2005-05-12
申请号：US10982500
申请日：2004-11-05
申请人： Keith Harrison , Liqun Chen , Marco Mont
发明人： Keith Harrison , Liqun Chen , Marco Mont
IPC分类号： H04L9/08 , H04L9/30 , H04L9/32 , H04K1/00
CPC分类号： H04L9/3234 , H04L9/3073 , H04L9/3247
摘要： A smartcard is provided that stores a secret associated with the user of the card. The smartcard is arranged to map an input string to a first element of an algebraic group according to a known mapping function, to multiply the first element by the stored secret to form a second element of the same algebraic group such that there exists a computable bilinear map for the first and second elements, and to output this second element. This selection of the limited functionality of the smartcard enables it to be employed in the provision of a range of cryptographic services such as encryption, decryption and signature generation. The smartcard is therefore suitable for use in an organisation where multiple cryptographic services are required.
摘要翻译：提供了一种智能卡，其存储与卡的用户相关联的秘密。智能卡被安排为根据已知的映射函数将输入字符串映射到代数组的第一元素，以将第一元素乘以存储的秘密以形成相同代数组的第二元素，使得存在可计算的双线性映射第一个和第二个元素，并输出第二个元素。智能卡的有限功能的这种选择使其能够用于提供一系列加密服务，例如加密，解密和签名生成。因此，智能卡适用于需要多个加密服务的组织。

8. 发明申请

US20050089173A1 Trusted authority for identifier-based cryptography 审中-公开
标题翻译：基于标识符的加密技术的可信任权限
公开(公告)号：US20050089173A1
公开(公告)日：2005-04-28
申请号：US10893571
申请日：2004-07-15
申请人： Keith Harrison , Liqun Chen , John Malone-Lee
发明人： Keith Harrison , Liqun Chen , John Malone-Lee
IPC分类号： G06F7/72 , H04L9/08 , H04L9/30 , H04L9/32 , H04L9/00
CPC分类号： H04L9/3073 , G06F7/725 , H04L9/083 , H04L9/0866
摘要： A trusted authority is provided for identifier-based cryptography. The trusted authority has a secret and derives first and second elements at least the second of which it publishes. The first element is derived from an identifier associated with the trusted authority; the second element is a combination of the first element and the secret. The trusted authority provides a private-key generation service involving the generation of a private key for a third party in dependence on the secret and an identifier string associated with that third party.
摘要翻译：为基于标识符的加密提供了可信赖的权限。可信赖的权威机构有一个秘密，并且至少在第二个要素中出现第一个和第二个元素。第一个元素是从与可信管理机构相关联的标识符导出的; 第二个元素是第一个元素和秘密的组合。受信任的机构提供私有密钥生成服务，涉及根据秘密生成第三方的私有密钥以及与该第三方相关联的标识符串。

9. 发明申请

US20050005136A1 Security method and apparatus using biometric data 审中-公开
公开(公告)号：US20050005136A1
公开(公告)日：2005-01-06
申请号：US10829931
申请日：2004-04-21
申请人： Liqun Chen , Keith Harrison
发明人： Liqun Chen , Keith Harrison
IPC分类号： G06F21/32 , G06F21/60 , G07C9/00 , H04L9/30 , H04L9/32 , H04L9/00 , G06F12/14
CPC分类号： H04L9/3073 , G06F21/32 , G06F21/602 , G06F2221/2115 , G07C9/00087 , H04L9/0847 , H04L9/3033 , H04L9/321 , H04L9/3231
摘要： A security method and apparatus is provided in which a trusted authority is arranged to read in identity data from a memory device presented by an individual. This identity data comprises both biometric data of a specific individual and additional identity data concerning the same individual. The trusted authority uses the biometric data as a biometric reference for comparison with biometric characteristics of the individual presenting the memory card in order to determine whether the latter is the individual represented by the biometric data. The trusted authority uses the additional identity data or matching data, together with private data of the trusted authority, to generate a decryption key. This decryption key is apt to decrypt data encrypted using both an encryption key string comprising the additional identity data of the specific individual and public data of the trusted authority.

10. 发明申请

US20050002528A1 RSA cryptographic method and system 失效
标题翻译： RSA加密方法和系统
公开(公告)号：US20050002528A1
公开(公告)日：2005-01-06
申请号：US10866053
申请日：2004-06-10
申请人： Liqun Chen , Keith Harrison
发明人： Liqun Chen , Keith Harrison
IPC分类号： H04L9/30 , H04K1/00
CPC分类号： H04L9/302 , H04L9/3073 , H04L9/321 , H04L2209/046 , H04L2209/08 , H04L2209/20
摘要： An RSA cryptographic method and system is provided in which a sender encrypts a message (m) using a public modulus n, and an encryption exponent e that is a function of a sender-chosen string. This function is such that the values of e generated by it will not be coprime. In a preferred embodiment, a recipient receives the encrypted message and subjects it to a modulo-n blinding operation. The resultant blinded encrypted message is then made available to a trusted authority which decrypts it using a decryption exponent d based on the sender-chosen string and private data associated with the public modulus; however, the blinding applied to the message prevents the trusted authority from reading the message. The decrypted, but still blinded, message is passed back to the recipient who cancels the blinding to recover the message.
摘要翻译：提供一种RSA密码方法和系统，其中发送者使用公共模数n加密消息（m），以及作为发送方选择的字符串的函数的加密指数e。这个功能使得它产生的e的值不会是互质的。在优选实施例中，接收者接收加密的消息并使其受到模拟盲法操作。然后，所得到的盲加密消息可用于使用解密指数d根据发送者选择的字符串和与公共模数相关联的专用数据对其进行解密的可信授权机构; 然而，应用于该消息的盲法阻止受信任的机构读取消息。被解密但仍然盲目的消息被传回给收件人，取消盲目的恢复消息。

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