| 摘要 |
Performing an untraceable secret matching between a first credential associated with a first property of a first user and a second credential associated with a second property of a second user includes receiving the first credential, receiving a matching reference formed so the first user can detect a matching of the first property with a remote property from a credential of another user, supplying a first nonce value to the second user, receiving a hidden version of the second credential from the second user formed by the second user on the basis of the second credential, the first nonce value supplied by the first user and a random value locally generated on a side of the second user, and performing the matching by combining the first credential and the received hidden credential with the first nonce value and comparing the combination with the matching reference.
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