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发明公开
CN105577625A 基于预共享密钥的实体鉴别方法及装置 有权 许可

基于预共享密钥的实体鉴别方法及装置
摘要：
本发明为基于预共享密钥的实体鉴别方法及装置，属网络安全技术领域。具体是：实体A产生NA并发给实体B；实体B生成NB和ZSEEDB计算MKA||KEIA、AuthEncDataB，发送NB||NA||AuthEncDataB给实体A；实体A产生ZSEEDA计算AuthEncDataA、Z、MK、MacTagA，发送NA||NB||AuthEncDataA||MacTagA给实体；实体B计算Z、MK，MacTagA并与收到的MacTagA比较若相等，实体A合法；实体B计算MacTagB并发给实体A；实体A计算MacTagB并与收到的MacTagB比较若相等，实体B合法。本发明降低了硬件资源消耗。
摘要（英）：

The invention relates to an entity discriminating method and device based on a PSK, and belongs to the technical field of network safety. The method comprises that an entity A generates a random number N and sends N to an entity B; the entity B generates a random number N and a random number ZSEED of a key seed, calculates a secret key MKA OR KEIA and first encryption authentication data AuthEncData, and sends N OR N OR AuthEncData to the entity A; the entity A generates a random number ZSEED of a key seed, calculates second encryption authentication data AuthEncData, a shared key seed Z, a main key MK and a first message authentication tag MacTag, and sends the N OR N OR AuthEncData OR MacTag to the entity B; the entity B calculates Z, MK and a MacTag, compares the calculated MacTag with the received MacTag, and entity A is valid if the calculated MacTag equals the received MacTag; the entity B calculates a second message authentication tag MacTag and sends MacTag to the entity A; and the entity A calculates a MacTag and compares the calculated MacTag with the received MacTag, and entity B is valid if the calculated MacTag equals the received MacTag. According to the invention, consumption of hardware resources is reduced.

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