Invention Grant
US08453240B2 System for efficiently handling cryptographic messages containing nonce values in a wireless connectionless environment without comprising security
失效
用于在不包括安全性的情况下有效地处理在无线无连接环境中包含随机值的加密消息的系统
- Patent Title: System for efficiently handling cryptographic messages containing nonce values in a wireless connectionless environment without comprising security
- Patent Title (中): 用于在不包括安全性的情况下有效地处理在无线无连接环境中包含随机值的加密消息的系统
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Application No.: US13447902Application Date: 2012-04-16
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Publication No.: US08453240B2Publication Date: 2013-05-28
- Inventor: Todd Lagimonier , Jim Voris
- Applicant: Todd Lagimonier , Jim Voris
- Applicant Address: US MD Annapolis
- Assignee: TeleCommunication Systems, Inc.
- Current Assignee: TeleCommunication Systems, Inc.
- Current Assignee Address: US MD Annapolis
- Agent William H. Bollman
- Main IPC: H04L29/06
- IPC: H04L29/06
Abstract:
A secure communication module that accepts a cryptographic message if a nonce value for the received message is greater than the largest nonce value yet seen. If the received nonce value is not the largest nonce value yet seen, the secure communication module compares the received nonce value with a nonce acceptance window. If the nonce value falls outside the nonce acceptance window, the secure communication module rejects the received message and assumes a replay attack. Alternatively, if the nonce value falls within the nonce acceptance window, the secure communication module compares the received nonce value with a replay window mask. If comparison with the replay window mask indicates that the received nonce value has been seen before, the secure communication module rejects the received message and assumes a replay attack. Otherwise, the secure communication module accepts the message and adds the received nonce value to the replay window mask.
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