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发明公开
CN110289962A 一种基于UTXO模型的IBE密钥更新方法及装置 有权

一种基于UTXO模型的IBE密钥更新方法及装置
摘要：
本申请提供了一种基于UTXO模型的IBE密钥更新方法及装置，包括：在目标用户的密钥需要更新的情况下，从区块链中获取针对目标用户最新更新的UTXO交易信息；从UTXO交易信息中的输出信息中获取目标用户的身份标识信息；若目标用户为非受监管用户，则对目标用户的主私钥和主公钥进行变更，并利用目标用户的身份标识信息及变更后的主公钥，更新目标用户的私钥；或，若目标用户为非受监管用户，对目标用户的身份标识信息进行变更，并利用目标用户的主公钥及变更后的身份标识信息，更新目标用户的私钥。在本申请中，通过以上方式，可以实现对目标用户的密钥的更新。
摘要（英）：

The invention provides an IBE key updating method and device based on a UTXO model, and the method comprises the steps: obtaining the latest updated UTXO transaction information of a target user from a block chain under the condition that the key of the target user needs to be updated; obtaining identity identification information of the target user from output information in the UTXO transaction information; if the target user is a non-supervised user, changing the main private key and the main public key of the target user, and updating the private key of the target user by using the identity identification information of the target user and the changed main public key; or, if the target user is the unsupervised user, changing the identity identification information of the target user, and updating the private key of the target user by using the main public key of the target user and the changed identity identification information. According to the method and the device, the secret key of the target user can be updated.

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