Multi-party authentication method based on time division and space division and computer readable storage medium

Abstract

The invention relates to a multi-party authentication method based on time division and space division and a computer readable storage medium. The method comprises the following steps: an accessed node selects an access path to an access node, generates an encrypted access path and sends the encrypted access path to the access node; dividing a secret into a plurality of parts according to the number of nodes passed by the access path, and performing different value encryption according to different time periods; the access node decrypts the encrypted access path to obtain the access path; and sharing and decrypting nodes passed by the access path to obtain the secret. According to the method, the accessed node can be finally accessed only when the space condition and the time condition are met and each node on the path is credible. Therefore, the reliability of secret access can be effectively ensured, and the leakage risk is reduced.

Description

technical field [0001] The invention relates to the field of secret storage, and more specifically, relates to a multi-party authentication method based on time division and space division and a computer-readable storage medium. Background technique [0002] The idea of ​​secret sharing is to split the secret in an appropriate way. Each split share is managed by different participants. A single participant cannot recover the secret information, and only several participants can cooperate to recover the secret information. That is, for the (n, n) secret sharing scheme, only when n parties participate can the secret be mastered, and any n-1 parties cannot obtain the secret. [0003] However, the existing threshold secret contribution mechanism does not limit space and time. Therefore, as long as malicious participants illegally obtain the access path, they can access the secret, so the reliability is not high, and there is a greater risk of leakage. Contents of the inventio...

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Problems solved by technology

[0003] However, the existing threshold secret contribution mechanism does not limit the space and time

Therefore, as long as malicious participants illegally obtain the access path, they can access the secret, so the reliability is not high, and there is a greater risk of leakage

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