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    • 3. 发明授权
    • Recreating a cryptographic key in a replacement device
    • 在更换设备中重新创建加密密钥
    • US08259947B2
    • 2012-09-04
    • US10752420
    • 2004-01-05
    • Gregory Gordon RoseAlexander GantmanJohn W. Noerenberg, II
    • Gregory Gordon RoseAlexander GantmanJohn W. Noerenberg, II
    • H04L9/00
    • H04L9/0891H04L9/3247
    • Embodiments describe a method and/or system whereby a secret key in a cryptographic system may be replaced without revealing the secret key. One embodiment comprises creating a first private key and corresponding first public key. A second private key associated with the first private key and a second public key corresponding to the second private key are also created. The second private key is output once such that it can be re-created and the second public key is output when outputting the first public key. The first private key is used for authentication. The method further comprises re-creating the second private key; and using the second private key for authentication. Another embodiment comprises creating a private key and corresponding public key with associated system parameter; outputting the system parameter when outputting the public key; and using the private key for authentication. The method may further comprise creating a new private key using the previous key and the system parameter.
    • 实施例描述了一种方法和/或系统,由此密码系统中的秘密密钥可以在不揭示密钥的情况下被替换。 一个实施例包括创建第一私钥和对应的第一公钥。 还创建与第一私钥相关联的第二私钥和对应于第二私钥的第二公钥。 第二私钥被输出一次,使得可以重新创建第二个私钥,并且在输出第一个公钥时输出第二个公钥。 第一个私钥用于认证。 该方法还包括重新创建第二私钥; 并使用第二个私钥进行认证。 另一个实施例包括创建具有相关系统参数的私钥和相应的公钥; 输出公钥时输出系统参数; 并使用私钥进行身份验证。 该方法还可以包括使用先前的密钥和系统参数创建新的私钥。
    • 5. 发明授权
    • Puzzle-based authentication between a token and verifiers
    • 令牌和验证者之间的基于拼图的身份验证
    • US08793497B2
    • 2014-07-29
    • US12118593
    • 2008-05-09
    • Gregory Gordon RoseAlexander GantmanMiriam Wiggers De VriesMichael PaddonPhilip Michael Hawkes
    • Gregory Gordon RoseAlexander GantmanMiriam Wiggers De VriesMichael PaddonPhilip Michael Hawkes
    • G06F21/00
    • H04L63/0435H04L63/06H04L63/0853
    • A puzzle-based protocol is provided that allows a token and verifier to agree on a secure symmetric key for authentication between the token and verifier. A token stores a secret key and one or more puzzle-generating algorithms. The verifier independently obtains a plurality of puzzles associated with the token, pseudorandomly selects at least one of the puzzles, and solves it to obtain a puzzle secret and a puzzle identifier. The verifier generates a verifier key based on the puzzle secret. The verifier sends the puzzle identifier and an encoded version of the verifier key to the token. The token regenerates the puzzle secret using its puzzle-generating algorithms and the puzzle identifier. The token sends an encoded response to the verifier indicating that it knows the verifier key. The token and verifier may use the verifier key as a symmetric key for subsequent authentications.
    • 提供了一个基于拼图的协议,允许令牌和验证者在安全对称密钥之间达成令牌和验证者之间的认证。 令牌存储密钥和一个或多个拼图生成算法。 验证者独立地获得与令牌相关联的多个谜题,伪随机地选择至少一个谜题,并解决它以获得拼图秘密和谜题标识符。 验证者基于拼图秘密生成验证码。 验证者将拼图标识符和验证者密钥的编码版本发送到令牌。 令牌使用其拼图生成算法和拼图标识符重新生成拼图秘密。 令牌向验证者发送编码的响应,指示它知道验证者密钥。 令牌和验证者可以使用验证者密钥作为后续认证的对称密钥。
    • 6. 发明授权
    • Network helper for authentication between a token and verifiers
    • 网络助手用于令牌和验证者之间的身份验证
    • US08595501B2
    • 2013-11-26
    • US12118580
    • 2008-05-09
    • Gregory Gordon RoseAlexander GantmanMiriam Wiggers De VriesMichael PaddonPhilip Michael Hawkes
    • Gregory Gordon RoseAlexander GantmanMiriam Wiggers De VriesMichael PaddonPhilip Michael Hawkes
    • H04L29/06
    • H04L63/0435H04L63/06H04L63/0853
    • A network helper is provided that assists verifiers in executing a puzzle-based protocol for authentication of a token. A token stores a secret key and one or more puzzle-generating algorithms. The helper stores a plurality of puzzles associated with a particular token. When requested to do so by a verifier, the helper provides a plurality of pseudorandomly selected puzzles for the token to a verifier. The puzzles are encoded with information that is used between the verifier and token to establish a secured symmetric key. The verifier selects one or a few of the encoded puzzles and breaks them by a brute force attack. Because the helper does not know which puzzles have been selected, it has to break all puzzles to attempt to figure out the symmetric key. However, if a large number of puzzles are utilized, say millions, then breaking all of them becomes a computationally prohibitive task.
    • 提供了一个网络助手,帮助验证者执行一个基于拼图的协议,用于令牌的身份验证。 令牌存储密钥和一个或多个拼图生成算法。 辅助者存储与特定令牌相关联的多个谜题。 当验证者要求这样做时,帮助者为验证者提供多个伪随机选择的令牌的拼图。 使用在验证者和令牌之间使用的信息来编码谜题以建立安全的对称密钥。 验证者选择一个或几个编码的谜题,并通过暴力攻击破坏它们。 因为帮手不知道哪些谜题被选中,所以它必须打破所有的谜题,试图找出对称的关键。 然而,如果大量的谜题被利用,说数百万,那么打破所有这些都成为一个计算上令人望而却步的任务。
    • 8. 发明授权
    • Low latency block cipher
    • 低延迟块密码
    • US09336160B2
    • 2016-05-10
    • US12262092
    • 2008-10-30
    • Philip Michael HawkesLu XiaoGregory Gordon RoseSteve Millendorf
    • Philip Michael HawkesLu XiaoGregory Gordon RoseSteve Millendorf
    • G06F12/14H04L9/08H04L9/06
    • G06F12/1408H04L9/0618H04L2209/125H04L2209/24
    • A block cipher is provided that secures data by encrypting it based on the memory address where it is to be stored. When encrypting data for storage in the memory address, the memory address is encrypted in a first plurality of block cipher rounds. Data round keys are generated using information from the first plurality of block cipher rounds. Data to be stored is combined with the encrypted memory address and encrypted in a second plurality of block cipher rounds using the data round keys. The encrypted data is then stored in the memory location. When decrypting data, the memory address is again encrypted as before while the encrypted stored data is decrypted in a second plurality of the block cipher rounds using the data round keys to obtain a partially decrypted data. The partially decrypted data is combined with the encrypted memory address to obtain fully decrypted data.
    • 提供了一种分组密码,其通过基于要存储的存储器地址对其进行加密来保护数据。 当将存储在存储器地址中的数据进行加密时,存储器地址以第一多个块密码循环加密。 使用来自第一多个块密码轮的信息来生成数据循环密钥。 要存储的数据与加密的存储器地址组合,并使用数据循环密钥在第二多个块密码轮中进行加密。 然后将加密的数据存储在存储器位置。 当解密数据时,如先前一样再次加密存储器地址,同时使用数据循环密钥在第二多个块密码轮中对加密的存储数据进行解密以获得部分解密的数据。 部分解密的数据与加密的存储器地址组合以获得完全解密的数据。