Multi-party security computing method and apparatus, and electronic device

A first computing node, comprising a processor and a non-transitory computer-readable memory coupled to the processor, and configured with instructions executable by the processor to cause the processor to perform operations comprising:

• generating, based on a secure multi-party computation algorithm, first computing parameters, the first computing node and a second computing node deployed in a distributed network and jointly participating in a secure multi-party computation based on data respectively held on each of the first computing node and the second computing node, wherein the first computing parameters are related to the data held by the first computing node and comprise first ciphertext data for the secure multi-party computation;
• obtaining second computing parameters from the second computing node, the second computing parameters related to the data held by the second computing node and comprising second ciphertext data for the secure multi-party computation;
• performing the secure multi-party computation based on the second computing parameters;
• generating an audit log recording description information related to the first computing parameters, the description information comprising a key corresponding to the first ciphertext data;
• determining whether the key recorded in the audit log is a known key held by the second computing node;
• and
• determining, in response to determining that the key is the known key held by the second computing node, that the first computing parameters contain a risk of privacy leakage;
• or
• determining, in response to determining that the key is not the known key held by the second computing node, that the first computing parameters do not contain the risk of privacy leakage.

A non-transitory computer-readable storage medium storing instructions executable by a processor, wherein the processor and the non-transitory computer-readable storage medium are installed in a first computing node, the first computing node and a second computing node are deployed in a distributed network and jointly participating in a secure multi-party computation based on data respectively held on each of the first computing node and the second computing node, and, upon being executed by the processor, the instructions cause the processor to perform operations comprising:

• generating, based on a secure multi-party computation algorithm, first computing parameters, wherein the first computing parameters are related to the data held by the first computing node and comprise first ciphertext data for the secure multi-party computation;
• obtaining second computing parameters from the second computing node, the second computing parameters related to the data held by the second computing node and comprising second ciphertext data for the secure multi-party computation;
• performing the secure multi-party computation based on the second computing parameters;
• generating an audit log recording description information related to the first computing parameters, the description information comprising a key corresponding to the first ciphertext data;
• determining whether the key recorded in the audit log is a known key held by the second computing node;
• and
• determining, in response to determining that the key is the known key held by the second computing node, that the first computing parameters contain a risk of privacy leakage;
• or
• determining, in response to determining that the key is not the known key held by the second computing node, that the first computing parameters do not contain the risk of privacy leakage.