消息摘要算法在电子商务及信息安全领域有广泛应用，单向性和抗冲突性是消息摘要算法的关键。利用整数向量的拆分求和与数据截取的不可逆性以及非线性变换矩阵的可扩展性，构造一个新的消息摘要算法。对算法进行了描述和讨论，设计测试用例对算法进行了验证。测试结果表明，算法能够达到预期效果，具有简洁、灵活、逻辑清晰、应用面广等优点。

Message-digest algorithm is widely applied in the field of e-commerce and information security，and its unidirectionality and collision resistance are the keys to the algorithm. By using splitting and summing of integer vector，combining with the irreversibility of data interception and extensibility of nonlinear transform matrix, a new message-digest algorithm is constructed. The algorithm is described， discussed and verified through designed test cases. Test results show that the algorithm can achieve the desired effect. with the advantages of being concise，flexible，logical and widely applicable.