数字签名 签名验证 Original Original Dear Ali: data I hay reviewed the teYr One-WO Hashing (Neor“「 Hashing algorith Identical 一→□ hashes One-way Private key Digital lic key One-way encryption signature signature decryption hash data integrity Hsh+公钥密码加密=数字签名数字签名 Hash + 公钥密码加密 ＝ 数字签名 签名 验证