This paper defines a PPP authentication methods, the method using random "challenge" and the basis for "challenge" and calculated key encryption Hash "responsive" to complete certification.

本文定义了一种PPP认证方法，该方法利用随机“挑战”和依据“挑战”和密钥计算出的加密哈希“应答”来完成认证。

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Unfortunately, the shingle proved to be a complete commercial failure, and, in fact, it eventually lost its UL certification, and became ILLEGAL for sale in the United States.

FORBES: Connect