中文摘要：

针对现有数码防伪方案中商品查询率低、产品真伪难以鉴别、假品责任难以追究等安全缺陷和问题，提出了一个基于无密钥泄露变色龙签名的数码防伪方案。该方案能有效提高系统查询率，提高数据完整性保护强度，抵抗枚举查询攻击，容易辨别产品真伪且能明确假品责任人群，因此更适合用于电子商务平台下数字化产品的安全防伪。

英文摘要：

For the purpose of solving the problems of low query rate, inefficiency, and non-traceability in the existing digital anti-counterfeiting systems, a new anti-counterfeiting scheme based on chameleon signature without key exposure is proposed. The scheme can effectively improve the query rate of the system, strengthen the data integrity, resist the brute force attack, and distinguish the true products from bogus ones. Therefore, it is more suitable for anti-counterfeiting digital products in the electronic commerce infrastructure.