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1. 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。

2. 发明申请

US20050102512A1 Data output method, system and apparatus 有权
标题翻译：数据输出方式，系统和装置
公开(公告)号：US20050102512A1
公开(公告)日：2005-05-12
申请号：US10664069
申请日：2003-09-16
申请人： Cheh Goh , Liqun Chen , Stephen Crane , Marco Mont , Keith Harrison
发明人： Cheh Goh , Liqun Chen , Stephen Crane , Marco Mont , Keith Harrison
IPC分类号： G06F21/60 , H04L9/08 , H04L9/30 , H04L9/00
CPC分类号： G06F21/608 , G06F2221/2107 , G06F2221/2115 , H04L9/3073
摘要： Data to be output to a removable storage medium is encrypted for sending to an output device by an encryption process based on encryption parameters comprising public data of a trusted party and an encryption key string comprising a policy for allowing the output of the data. The trusted party provides a decryption key to the output device but only after being satisfied that the policy has been met. The decryption key is generated in dependence on the encryption key string and private data of the trusted party. The output device uses the decryption key in decrypting the data to be output. Embodiments are provided that involve multiple policies and trusted parties.
摘要翻译：要输出到可移动存储介质的数据被加密，用于通过基于包括可信方的公共数据的加密参数的加密处理和包括用于允许输出数据的策略的加密密钥串来发送到输出设备。可信方向输出设备提供解密密钥，但只有在满足该策略已被满足之后。解密密钥根据加密密钥串和可信方的专用数据生成。输出设备在解密要输出的数据时使用解密密钥。提供涉及多个策略和受信任方的实施例。

3. 发明申请

US20060215837A1 Method and apparatus for generating an identifier-based public/private key pair 审中-公开
标题翻译：用于生成基于标识符的公钥/私钥对的方法和装置
公开(公告)号：US20060215837A1
公开(公告)日：2006-09-28
申请号：US11305869
申请日：2005-12-16
申请人： Liqun Chen , Keith Harrison
发明人： Liqun Chen , Keith Harrison
IPC分类号： H04L9/00
CPC分类号： H04L9/0847 , H04L9/3013 , H04L9/3252
摘要： An identifier-based public/private key pair is generated for a first party with the involvement of a trusted authority that has an associated secret. An identifier of the first party is signed by the trusted party to produce a multi-component signature. This signature is converted into the first-party identifier-based key pair; the private key of this key pair comprises a component of the signature provided confidentially to the first party, and the public key being formed using at least another component of the signature and the first-party identifier. The signature used by the trusted authority is, for example, a Schnorr signature or a DSA signature.
摘要翻译：为具有相关联秘密的可信管理机构参与，为第一方生成基于标识符的公钥/私钥对。第一方的标识符由可信方签名以产生多组分签名。该签名被转换为基于第一方标识符的密钥对; 该密钥对的私钥包括保密地提供给第一方的签名的组件，以及使用签名和第一方标识符的至少另一个组件形成的公钥。受信任的机构使用的签名是例如Schnorr签名或DSA签名。

4. 发明申请

US20060026426A1 Identifier-based signcryption with two trusted authorities 有权
公开(公告)号：US20060026426A1
公开(公告)日：2006-02-02
申请号：US11182527
申请日：2005-07-14
申请人： Liqun Chen , Keith Harrison , John Malone-Lee
发明人： Liqun Chen , Keith Harrison , John Malone-Lee
IPC分类号： H04L9/00
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.

5. 发明申请

US20050005100A1 Cryptographic method and system 审中-公开
标题翻译：加密方法和系统
公开(公告)号：US20050005100A1
公开(公告)日：2005-01-06
申请号：US10831548
申请日：2004-04-22
申请人： Liqun Chen , Keith Harrison
发明人： Liqun Chen , Keith Harrison
IPC分类号： H04L9/08 , H04L9/30 , H04L9/32 , H04L9/00
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 public data of a trusted party and an encryption key string formed using at least a hash value generated by hashing 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：要由第一方发送给第二方的第一数据使用信任方的公共数据和使用至少哈希值形成的加密密钥串进行加密，所述哈希值通过散列形成，所述哈希值通过散列通常用作预期的标识符的至少一个条件第一个数据的收件人。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。

6. 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。

7. 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.

8. 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。

9. 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。

10. 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。

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