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公开(公告)号：US09705671B2
公开(公告)日：2017-07-11
申请号：US14421400
申请日：2013-07-15
发明人： Qin Li , Manxia Tie , Ning Bu
CPC分类号： H04L9/0819 , H04L9/083 , H04L9/0891 , H04L9/14 , H04L2209/24 , H04L2209/601
摘要： A one-way key switching method and an implementation device. The method comprises: after obtaining a new key and before deducing or determining that at least n receivers obtain the new key, a sender setting the sending direction of the new key as unavailable and keeping the sending direction of an original key as available; after obtaining the new key and before deducing or determining that at least n receivers obtain the new key, before the original key is invalid, the sender starting up a key switching process, i.e. setting the sending direction of the original key as unavailable and setting the sending direction of the new key as available; where N≧n≧1, N is the total number of the receivers corresponding to the sender.
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公开(公告)号：US10263771B2
公开(公告)日：2019-04-16
申请号：US14420342
申请日：2013-08-09
发明人： Manxia Tie , Qin Li , Ning Bu
摘要： A two-way key switching method and an implementation device. The method includes: when acquiring a new key, any end in a communication link setting a new key transmitting direction to be unavailable and setting a new key receiving direction to be available; after it is presumed or determined that at least n opposite ends have acquired the new key and before an original key is invalid, the any end starting a first key switching process, to set the transmitting direction of the original key to be unavailable and set the new key transmitting direction to be available, where N≥n≥1, and N is the total number of receiving sides corresponding to the transmitting side; according to a protection identifier of data transmitted from the opposite end, the any end selecting a valid key to perform deprotection; and after the data is successfully deprotected with the new key for the first time, the any end starting a second key switching process, to set the receiving direction of the original key to be unavailable. By limiting the sequence of each end on a communication link to perform key switching, the present invention ensures that each end can correctly deprotect data transmitted from an opposite end.
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公开(公告)号：US20150222427A1
公开(公告)日：2015-08-06
申请号：US14420342
申请日：2013-08-09
发明人： Manxia Tie , Qin Li , Ning Bu
CPC分类号： H04L9/0822 , H04L9/0891 , H04L63/061 , H04L2209/24 , H04W12/04
摘要： A two-way key switching method and an implementation device. The method includes: when acquiring a new key, any end in a communication link setting a new key transmitting direction to be unavailable and setting a new key receiving direction to be available; after it is presumed or determined that at least n opposite ends have acquired the new key and before an original key is invalid, the any end starting a first key switching process, to set the transmitting direction of the original key to be unavailable and set the new key transmitting direction to be available, where N≧n≧1, and N is the total number of receiving sides corresponding to the transmitting side; according to a protection identifier of data transmitted from the opposite end, the any end selecting a valid key to perform deprotection; and after the data is successfully deprotected with the new key for the first time, the any end starting a second key switching process, to set the receiving direction of the original key to be unavailable. By limiting the sequence of each end on a communication link to perform key switching, the present invention ensures that each end can correctly deprotect data transmitted from an opposite end.
摘要翻译： 一种双向密钥交换方法和实现装置。 所述方法包括：当获取新密钥时，通信链路中的任何一端将新的密钥发送方向设置为不可用，并设置新的密钥接收方向可用; 在假定或确定至少n个相对端已经获得新密钥之后并且在原始密钥无效之前，任何一个端点开始第一密钥交换过程，以将原始密钥的发送方向设置为不可用，并将 新密钥发送方向可用，其中N≥n≥1，N是对应于发送侧的接收侧的总数; 根据从相对端发送的数据的保护标识符，任一端选择有效的密钥进行去保护; 并且在首次用新密钥成功地去保护数据之后，任何一端开始第二密钥交换处理，以将原始密钥的接收方向设置为不可用。 通过限制通信链路上的每个端点的序列来执行密钥交换，本发明确保每一端能够正确地去除从相对端发送的数据。
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公开(公告)号：US20150222425A1
公开(公告)日：2015-08-06
申请号：US14421400
申请日：2013-07-15
发明人： Qin Li , Manxia Tie , Ning Bu
CPC分类号： H04L9/0819 , H04L9/083 , H04L9/0891 , H04L9/14 , H04L2209/24 , H04L2209/601
摘要： A one-way key switching method and an implementation device. The method comprises: after obtaining a new key and before deducing or determining that at least n receivers obtain the new key, a sender setting the sending direction of the new key as unavailable and keeping the sending direction of an original key as available; after obtaining the new key and before deducing or determining that at least n receivers obtain the new key, before the original key is invalid, the sender starting up a key switching process, i.e. setting the sending direction of the original key as unavailable and setting the sending direction of the new key as available; where N≧n≧1, N is the total number of the receivers corresponding to the sender.
摘要翻译： 单向密钥交换方法和实现装置。 该方法包括：在获得新密钥之后，在推导或确定至少n个接收者获得新密钥之前，发送者将新密钥的发送方向设置为不可用，并保持原始密钥的发送方向可用; 在获得新密钥之后，在推导或确定至少n个接收者获得新密钥之前，在原始密钥无效之前，发送者启动密钥交换过程，即将原始密钥的发送方向设置为不可用，并设置 发送新密钥的方向可用; 其中N≥n≥1，N是对应于发送者的接收器的总数。
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