{ "slug": "crypto-basics", "name": "密码学基础", "description": "对称/非对称加密、哈希、数字签名、PKI", "tags": [ "密码学", "加密", "哈希", "数字签名", "pki", "证书" ], "created": "2026-09-17", "question_files": [ "code_reading.json", "short_answer.json", "single_choice.json", "true_false.json" ], "stats": { "total": 34, "by_type": { "code_reading": 1, "short_answer": 3, "single_choice": 20, "true_false": 10 } } }